RockfordT210d4, SS RL-p12D2 Kicker S15L7D2

All holders of a direct D2400 2ohms 1ohm 1200 is 800 Watts.

T210 D4 Rockford, Rockford has recommended "strongly encloure" is supposed to be from 1.5 to 35 Hz

Sound Splinter RL-p, Q2 was 1.75 @ 32Hz

Kicker S15L7 D2 of about 4 @ 33Hz

Rockford is just amazing output 10 "sub, I would say that the SPL level is equal to or slightly less than the p-RL, SQ wise, RL-P to reach the much better known

RL-p I like the SQ, it gives, but it lacks indoor heated output volume and pressure, I remember, I had sealed and there was a total lack of production, so that it became much better after I have worn.

Kicker S15L7 I would say that it is difficult to win 220 seats. The output is amazing, even if the SQ does not fall behind the RL-p, L7 is a job box, kicker recommends, it will be hard and low.

All subs are going for around $ 200-250, but I have T2 for 90, RL-p for 220ish for GB, L7 for less than 220.

Reference article. LoudSpeaker Caraudio

Similar article. LoudSpeaker Car Audio

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Pioneer TS-W304DVC Enclosure Review

For those of you who have been pioneers tsw304DVC some tips on the design forum if space is not a problem.

First of all, the fence is the factory recommended waaaaay small and under 3 "round hole tuned 40htz creates a lot of annoying noise relief at all frequencies less than 40 completed HTZ.

Now, new information ....

I currently use CAD (Computer Aided Design) to formulate and calculate the caraudio speakers and the subwoofer output.

Pioneer model requires these parameters tsw304DVC ..

trading volume of 3.5 cubic feet

wait tuning between 30 to 33 HTZ

No fiberglass filler.

These met the requirements to get a free air sub-3dB at 33 Rollof HTZ and self-3dB Rollof 15 HTZ, which means true bass and subsonic frequencies too.

One performs in an incredible 105 DTR production with acoustic output SPL at 95 dbl. It's a lot for a 12 "with a sub Xmax of only 8.3mm, and only 300W RMS.

Sub faithfully reproduces all the music is slow rap and dancehall, and R & B. The bass is great

The patented VCCS (cooling coil) is also what should ... which is to remove heat from the coil, which is kept cool and play more.

So once u have the space and the size of the caraudio speakers is not a problem with these specifications for maximum performance of your TSW304DVC. I know because I have one and these are my specs. My friends can not believe that this caraudio speaker playing in the back of my car!

By the way the sub was blown JBL Power 1000W, JL 12w3 and the new Pioneer TSW305 & TSW306 both precision sound and overall production.

TS-W304DVC is probably one of the pioneers better designed and manufactured marine never lived up to its name, it just needs the right caraudio speaker

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Digital Designs 9512e

Well I thought I'd do a little review of the sub.

this is a Digital Designs 9512th

I just threw together a box for it since I had to listen as soon as possible. box was about 3.1 cubic before traveling. with 3 4 "airports outside of the box mounted powered by a Viper 2500.1 @ 1 ohm of the caraudio sub was a monster down to me in that box, he played down as nothing, but when he struck in the 41st ... -. 43Hz wide it decreased dramatically at the top of the box was too small for my taste SPL sounded good with music for me, but then again im SQL muted tones I could not make a difference, but overall, I would give it an A + for. throughout the two days that I had (back to DD to determine a dustcap questions) is worth the money I spent for her. dustcap and CF.

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Find Music On Your IPod Through The Alpine CDE-9870E

Since 2006, new movies, the only Alpine CD caraudio campaign, the entry level version of MP3 is a small force very different. As a matter of convenience reasons. Functions for the job. The most important quality of sound is not common at that time to send ALPINE CDE-9846E Alpine has created a name, which has shown that a single CD caraudio , a MP3 version of a birth name in the Alpine Radio Single Entry Level CD caraudio with success.
Caraudio
The CDE-9870E back to focus on simplicity. But the activity of local control of the iPod perfectly.
1 year and the CDE-9846E is to pave the way for radio ALPINE CD caraudio, MP3 at the entry level to begin next year, this year has sent to the Alpine CD caraudio ALPINE an heir, the level of MP3s. New entry-level, the CDE-9870E is marketed as an alternative to car audio is not very popular budget Neu. However, like radio, car MP3 CD caraudio that I have a good equation. It 'can send a high quality and, above all, the ability of devices and media. The iPod music player seamlessly.
Add the capacity of the iPod connected.
There is sympathy. Car Audio for the CDE-9870E is to add functions to control the iPod music player connected to the machine. In addition, the radio system with dominant single iPod music CD caraudio, this version does not require a box connected iPod interface (iPod) because of computer peripherals use this version. Designed to connect a matching system (iPod Direct Connect) is connected to the radio with single CD caraudio player iPod MP3 devices using just one. (Line is the line Alpine iPod Full Speed), who called the system Alpine iPod Full Speed.
CarAudio
Back to the CDE-9870E is a large cooling fins.
Futures Exchange connection system. Support for the iPod.
Caraudio
iPod Full Speed ​​what is good.
Knowing the information before it reaches a look. IPod Music device. A CD caraudio , mainly two kinds of way to expand.
The first device through a window to connect the iPod (iPod interface box) is often used with CD caraudio , line-up for 2007 with the previous year.
Connected by the second son connected directly to the iPod (iPod Cable Direct Connect) to activate the radio, CD caraudio single line-up of models 2006 and 2007 almost every recession.
Then the system connected to the iPod music player is connected directly, rather than a balloon device considered that the issue of iPod classic. Car audio players, most ask for much. The experience of the writers think of devices are connected directly to the resistance of both DEF-processing and data (data rate), and the ability to view detailed information such as music files from your iPod in the center of M & C will be more more flexibility.
Caraudio
CDE-987OE truly representative fan music player iPod.
Connected to a box. If you want to use an iPod music player, radio, CD caraudio player, radio CD caraudio single, which reduces the possibility of pulling the old iPod music player. Communication between the device or protocol is not consistent. E 'connected to the instruments Caraudio Cable Ngang the other half can not speak to each other. Windows iPod interface. Come party. Radio single CD caraudio player with iPod. So the first two machines to talk to.
Sufficient to use the devices connected directly. Systems like all alpine speed iPod will complete the job easier. Faster and receive - information. Command and control management to current and future iPod music player with radio, CD caraudio single that is more equity-oriented system with n ื to meet the near-total
CDE-9870E is used with the iPod what to do.
It is not difficult to have in this model of iPod full speed cable connected to a cable signal to the verb phrase is a blue cap on output Futures Exchange Radio player. The end of one side. It is connected to the iPod music player. Therefore, the expression must register to buy the cable signal that this line (KCE-422i) is used for connections. To use the radio single CD caraudio with MP3 music files iPod Oh! Do not forget the players with the iPod, but Moore is produced by the radio dial, but no music player iPod. Time of the music spotlight with precision.
IPod Fullspeed CarAudio Line ALPINE.
It's the end of the connector. Connector on the radio.
the other end to connect the iPod music player.
It connects to the radio will be like that.
Then play with the iPod. Which version can do.
This is a classic problem as well. Since most of the information is related to the problem invites a headache. Car audio players that are not dominant or the computer. E-version. Decorate your firmware to juggle a lot of life in the iPod to play music live self ื equation Ec to update your computer from all. updating the machine's operating system, Kim Tong (Furnish firmware) can do anything, if the iPod files. With iTune software, then connected to the work on the Internet for mobile iTune software upgrade at any time.
CarAudio
Therefore, it is extremely easy to use software-based computer (manual) to guide the use of radio-CD caraudio, MP3 This model means that the iPod music player. This unit is compatible with this model is the iPod music player. From 4 years to date. Most devices used in almost all versions except the iPod Shuffle also see the firmware version is provided.
Quart Version 3.1.1 IPod generation.
IPod-5 generation version 1.1.2.
Photo-iPod version 1.2.1.
Mini-iPod version 1.4.1.
Web-Chong iPod Nano as tools 1.2.
Elements copied from the machine manual CDE-9870E shows that if the iPod music player. Each group. A new version of the show. Would be to use the radio version is very unlikely to be a problem. Providing the firmware. If you need a newer version of the date 28/06/2006 is not allowed to use all the features. Furnished, if the firmware is older than the ALPINE no guarantee that this will lead all functions or not the need to make a good case otherwise, disability and because of these restrictions will be punished. He did not notice because I am now the garage.
Find music on iPod music players do.
You must have first to see if the radio single CD caraudio, MP3 This model has a control key or button and the button should be used. If you look at the pictures of that. Inspections to be important
The number 1 button is used to press ENT to confirm, how to find music files from your iPod music player. It CarAudio
ESC # 2 buttons to select the mode of trade for the songs you want to search mode. Playlist / artist / album / genre etc.
Number 3 on the UP / DOWN button to scroll through the list using the up / down to select the type of music or song you want to search.
In addition, there are three important buttons. If the REVERSE button on the Next button and other buttons, the space is used to search for music files on the CDE-9870E is recommended as follows.
Controls the main functions of the CDE-9870E is needed to support the search for music files, if necessary.CarAudio
Checks and other associated equipment on the front of the CDE-9870E. Should work together to find the music
Search music files from iPod music through the radio single CD caraudio MP3 ALPINE CDE-9870E can find songs in the playlist / artist / album / song / podcast / genre / composer. In this research, for example. Playlist / artist / album / song in brief
We turn the radio to work with this version of the dashboard of the iPod music player. It appears as shown.
Try to play.
Step 1 Press the Source button on the mode dial on the iPod.
First of all, how to use the state's first iPod.
Step 2 Press the 1 and 2, the horizontal position to choose how you want to search. This press Select Playlist.CarAudio
Step 3: When the mode playlist and press the 1 and 2, the list will appear in the playlist, then press up / down (# 3 UP / DOWN to scroll through the list using the up / down select the type of music or song you want to search.)
Controls the main functions of the CDE-9870E is needed to support the search for music files, if necessary.
Step 4 When you find an overview of the library. , Press ENT (the button number 2).
Click the search mode of the playlist.
Step 5: The radio display indicating that the CDE-9870E Search Order iPod music playlist to find items that add to the research.
We are looking for music files, the message shown in the radio display research.
Step 6 Once you have found the research appears to follow the music library and find the music begins to play.
Play the music of the song will start playing.
If music, then click Search. Making music is not detailed what to do.
Step 1: Define the press (button in the upper right quadrant) Tiltle mode.
Step 2 From the list of music files to be displayed, as the name / artist name album / track name, once found, press ENTER on your computer screen. Section.
When searching for songs you want to know. The system starts playback. And track radio display details
Click this and then, if no detailed information of music files. To verify that the music files on the iPod music player is not in the detailed pages of computer music files can not be detailed music.
Caraudio
search mode, press the blood of the artist.
Click the album search mode.
Click on the song search mode.
Search other means. To find the same research model that research will be the playlist music player iPod. The radio single CD caraudio, MP3 is very simple and straightforward to the most demanding of me to the conclusion that music is not difficult to think. Click here to Read more...

Passive filtering for mids tweets

CAPACITOR FILTERING CHARTS: HIGHPASS
caraudio
Highpass Filtering: To determine the crossover frequency a certain amount of capacitance will give you, use the formula: F = 0.159/(C x Rh) Explanation of Terms: C- .....is the capacitance value (in Farads) .........(1Farad = 1,000,000 uF) Rh - ...is speaker impedance (usually 2, 4 or 8 ohms) F - .....is the crossover frequency Filters By: Crossover Frequency (Hertz) Capacitance uF (microFarad) Freq.......8 Ohms...........4 Ohms...........2 Ohms (Hz).......(uF)................(uF)...............(uF) 80..........248................497................993 100........198................397................795 120........165................331................662 150........132................265................530 200........99.................198.................397 280........70.................141.................283 400........49.................99..................198 600........333................66..................132 800........244................49..................99 1K.........19..................40..................79 1.2k.......16..................33..................66 2k..........9.94...............20..................40 4k..........4.97...............9.94...............20 5k..........3.98...............7.95...............15.90 6k..........3.31...............6.63...............13.25 8k..........2.48...............4.97................9.94 10k........1.99...............3.98................7.95 12k........1.66...............3.31................6.63 Filtering by Capacitor Value: Capacitance uF (microFarad) VS Driver Resistance Crossover Frequency VS Cap Value and Resistance Cap Value.…8 Ohms….…...4 Ohms……….2 Ohms. .(uF)………..Freq(Hz).…….Freq(Hz).…….Freq(Hz) 2.2.…….......9k…...........18k…......…...36k 3.3…..........6k…...........12k…............24k 4.7....……....4.2k...........8.5k…..........17k 6.8..……......2.9k……......5.8k.......…....11.7k 10.……........2k…...........4k...........…..7.95k 22........…...903..…........1.8k.............3.6k 50.…..........398.....….....795.........…..1.6k 100….........199.......…...398.
CAPACITOR FILTERING CHARTS: HIGHPASS
caraudio
Highpass Filtering:
To determine the crossover frequency a certain amount of capacitance will give you, use the formula:
F = 0.159/(C x Rh)
Explanation of Terms:
C- .....is the capacitance value (in Farads)
.........(1Farad = 1,000,000 uF)
Rh - ...is speaker impedance (usually 2, 4 or 8 ohms)
F - .....is the crossover frequency
Filters By:
Crossover Frequency (Hertz)
Capacitance uF (microFarad)
Freq.......8 Ohms...........4 Ohms...........2 Ohms
(Hz).......(uF)................(uF)...............(uF)
80..........248................497................993
100........198................397................795
120........165................331................662
150........132................265................530
200........99.................198.................397
280........70.................141.................283
400........49.................99..................198
600........333................66..................132
800........244................49..................99
1K.........19..................40..................79
1.2k.......16..................33..................66
2k..........9.94...............20..................40
4k..........4.97...............9.94...............20
5k..........3.98...............7.95...............15.90
6k..........3.31...............6.63...............13.25
8k..........2.48...............4.97................9.94
10k........1.99...............3.98................7.95
12k........1.66...............3.31................6.63
Filtering by Capacitor Value:
Capacitance uF (microFarad) VS Driver Resistance
Crossover Frequency VS Cap Value and Resistance
Cap Value.…8 Ohms….…...4 Ohms……….2 Ohms.
.(uF)………..Freq(Hz).…….Freq(Hz).…….Freq(Hz)
2.2.…….......9k…...........18k…......…...36k
3.3…..........6k…...........12k…............24k
4.7....……....4.2k...........8.5k…..........17k
6.8..……......2.9k……......5.8k.......…....11.7k
10.……........2k…...........4k...........…..7.95k
22........…...903..…........1.8k.............3.6k
50.…..........398.....….....795.........…..1.6k
100….........199.......…...398..............795
200..….......99..............199..............398
500...........40...............80...............200
It is recommended that you use NON-POLARIZED electrolytic caps here. If you cannot find the specific value you need in one cap, you may wire multiple caps in parallel, to reach the value required. (Ie: 50//50 = 50+50 = 100uF)
200..….......99..............199..............398 500...........40...............80...............200 It is recommended that you use NON-POLARIZED electrolytic caps here. If you cannot find the specific value you need in one cap, you may wire multiple caps in parallel, to reach the value required. (Ie: 50//50 = 50+50 = 100uF) Click here to Read more...

Overview of enclosure designs

The cases are classified as different types of orders, and orders. This overview will explain each model and provides links to calculators and references. While researching this I found some conflicting information. The data are less common ideas / theories out. I recommend you also search for anyone wishing to build their own houses. It is recommended amounts of user manual, you can usually get a fairly wide range between the minimum and maximum value. At times close to 1 cubic foot gap. These recommendations, in my opinion, are common for the first time buyer / builder. For more detailed levels, using a calculator or a program design required Theile-Small parameters (T / S parameters) as Q, F3, QES, QTc interval, FS, and or Xmax. These parameters, when using the box to give you a much more precise, or the gate length designed specifically for the driver.

The first order, also called an infinite baffle is basically a free air installation. Very few caraudio speakers are designed for this application, as most require some strength to prevent a trip. Note that some infinite baffle enclosure called closed so that this is due to the fact that the caraudio speakers are the most external mounted above the cab of a vehicle with its back against the trunk. In this case, the strain used as a sealed box. The airspace has little or no resistance or power on the caraudio speaker. Infinite baffle configurations have little or no tuning or adjustment.

The second order, or a sealed box, is one of the simplest models. Size and shape of the sealed boxes are the least complex to build, and is easy to achieve expected results. There are two types of sealed boxes. Infinite plate is higher than the sky with mechanical suspension of the woofer. In other words, you can use its own mechanical suspension excursion subwoofer and steering, which was the first time in the order. The second type is an air suspension system. Air suspension is lower than the Sky with suspension woofer. This type of container, the air cushion is used to prevent the caraudio speaker touched bottom. The following information is based on a suspension fences. Vans for the fast, tight, precise and controlled response. You can modify the driver performance by varying the size or the number of housing meets the material you use.

Disadvantages of closed cases for the low-frequency output is small in size, have less power, less than the SPL features, and you need a driver with a large Xmax ensure the safe use of the spectrum up to fB (case of resonance ).

The third order, or transferred back to the boxes and take advantage of wave process, in which case the extension is the most cost down lower mid-bass SPL octave or more regions, including the port tuned. And 'generally increases 3dB of output compared to the sealed container. Ported boxes give a deep, powerful, full-bodied sound when designed properly. Xmax is reached in less than a channel, subsonic filter is recommended.

Fourth Order boxes also known as dual-chamber (portage / sealed) is a combination of second and third order. Fourth control boxes or bandpass have a driver in a closed cabinet with a box worn on the front. The driver can be installed in both directions, so one side is sealed and ventilated seconds. Very low F3 is possible with a bandwidth of fourth-order boxes, and generally less driver excursion. There is more control over the movement of the cone, so overexcursion is less likely. Weigh the disadvantages of bandpass boxes, though. The total volume of the two chambers resulting in a large cabinet, which is difficult to design correctly. Drivers can be blown due to the conical movement leads to lower thermal limits are exceeded. In some larger vehicles (SUVs, vans) gain cabin accommodates minor calculation errors in giving a bandwidth of a flat box and bandwidth while maintaining an SPL increased.

Subscribe to the cells are transferred to the sixth of bandwidth on both sides of the driver. These cases are more effective bandwidth, and produces less audible distortion, while the ventricles are filters to remove unwanted noise. They are usually larger than the fourth-order boxes of bandwidth, and is much more difficult to plan properly. It has not been publicly released a precise formulas for calculating sixth order band boxes, calculators, and even the design of the programs are still experimental period. Like all full-range enclosure, home audio solution affects the total, so experimentation is necessary to find the right sound in your car.

Order eighth cases are much more complex and almost impossible to design. They consist of a bandwidth sixth order with the ports, as well as providing the third department in a confined space, which is also transferred. Eighth to nearly a sixth of the basic design is a gateway to the order of two separate rooms on the contrary, the third in a confined space.

All other commands are variants of the theory of band pass. There are some that do not fall into a category of the order. These are transmission lines, folded horn, longer useful low (EBS) and a passive radiator, there is also a setting called isobaric I will explain.

The design of the transmission line is a pilot enclosure mounted on a kind of labyrinth that serves as an acoustic low pass filter with a lag of 90 degrees, which absorbs all the energy of the wave of the driver's back, except for all frequencies below 75 Hz. The transmission line is almost always full of a certain type or different types of filler or filler material to reduce the speed of sound through the line of the shortest line length. The filling also dampens standing waves and reflections backwave. The length of the transmission line is usually between 4-8 feet. Length corresponds to the ¼ wavelength of the resonant frequency of the driver. For example, a 50 Hz has a wavelength, "which gives an estimated line length of 5.75 '23. Enclosures transmission line are for the serious audiophile with a lot of time and patience, even more seeking superior performance.

A folded horn is similar to a transmission line with a bandwidth of the base of the fourth order. A conductor encased in a sealed box with a transmission line instead of a port. The calculations are the same volumes of each side must be in sync with others.

Extended low shelves, or BSE for short is just a variant of broken routes. The idea is to design a cabinet to 125% -150% larger than the optimal amount calculated and set lower than normal. The result is an output gain of 2 dB FS (resonance to drive the air) provides a frequency response in the teenage years! An increase in efficiency below 25 Hz and 30 Hz down. The cut may be as high as 36dB/octave below fB. Transient response is degraded thereafter. The low of BSE is very soft and very deep. Recommended more for home theaters instead of car audio applications.

Passive radiators are used in combination with a device driver and is intended to replace the vent port or a third-rate caraudio speaker. The resonant frequency of RA is intentionally altered by the designer by adding or removing the amount calculated from the mass of the cone or the radiator. The passive radiator is essentially a caraudio speaker without coil, using a magnet for resistance or simply a cone to stand around. Using the flow of air in a sealed box by the driver, a passive radiator moves 180 degrees out of phase, if there is no resistance or channel in the camera. To further aggravate the heater resistance changes, thereby changing the frequency of the box.

Isobar double or drivers can be used with any piece of furniture. There are several ways to create an isobaric configuration. The first is to place them in the same airspace, and set one of 180 degrees out of phase drivers. Another is to assemble them in a pen with an air space between them, in this configuration, the first driver drives in a box where the other stands. The third and most common configuration is to mount isobars face to face with a small air space, but enough so they do not touch each other, and thread 180 degrees out of phase. The idea behind this is that one driver then pushes the other pulls, light load on each caraudio speaker. Benefits of the improved bass response. Low said to be tighter, faster and more accurate. Go to the conductor is reduced by half, and the amount of the cupboard.

Isobaaristen boxes are used when the whole is more specific question, or if the bass is more important than a lot of bass. The disadvantages are wasted amplifier power and efficiency is decreased by 3 dB compared to that of a driver.

caraudio

Most of the information contained in this article come from protected sources and should be recognized as such. The following links provide more information and according to my repetition of the subject. The first link below is where I got most of the information for this article

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PLANET AUDIO EC20

The simple beauty.

Car audio is one factor, one of whom has his own car audio. Which they want their voice in the car audio with the best sound system preferences and taste in music varies depending on their preference is. And another in car audio systems is important, not the device for other types of the electronic new crossover, which is common to the use of electronic Nick Cross. not enough quality over the car audio system to be less effective. Therefore, we should choose the power electronics. Crossover with a practical and acceptable to the market. We offer electronic accessories. PLANET AUDIO crossover of the goods from the United States.

Multiple properties.

PLANET AUDIO EC20 is the electronic version of Nick. 3-way crossover with bass REMOTE CONTROL for the production and design of the shape of the curve by the stunning duo-tone color trim black Bond. Logo embossed plate and a sheet of white bond with black trim. By separating the input. And it's input into 3 sets of front and rear subwoofer.
Features in the front / rear them. Choose a high-frequency range from 40 Hz Max to 400 Hz Max using the switch to the frequency of x1 or x20 with a switch for selecting the rate of slope of the Network News at 6. dB / Oct, or 18 dB / Oct with buttons for Gain Control and switch the input channels.
The series features a subwoofer. The switch to the input signal to the car audio subwoofer. Button for selecting the frequency at which the signal from 32 Hz Max up to 250 Hz Max button to boost bass 0 - 12 dB using the Select button boost the frequency of the bass from 25 Hz Max up to 250 Hz. Allianz switches to Phase Shift 0 - 180 degree switch for selecting the signal in stereo or mono, the output volume for the Owl.

Technical information.

PLANET AUDIO Model EC20 is the power supply is a Pulse Width Modulated with signal to noise ratio, stirring 110 dB isolation, the stereo is in the 80 dB noise THD 0.01% rate, the slope of the crossover at 18 dB / Oct 20 kilo-ohm input impedance of the output impedance of 100 kilo-ohm Output Gain 1:2 (+6 dB) Maximum output voltage signal of 8 volts and the unit. 5-1/8x8-1/4x1-3/4 inches (W x D x H) 3-amp fuse with one of the input and line output terminals are plated RCA Jacks. gold Power connectors are gold plated Bolt, ridiculously well-bulb LED indicator is red.

System for testing.

Reference system, we started a radio / CD version of the PIONEER DEH-P6450 to the signal. Crossover of the PLANET AUDIO HIGH-PASS signal into the power amp speaker disassembly AUTOTEK SS-400.4 CLIF DESIGN SQ-6.5C on the LOW-PASS KICK PANEL speaker car audio subwoofer AUTOTEK SS-104B, 10. 1 inch built-in closet off the notch size of 0.8 cubic feet.
The test and tune for almost 2 hours to warm up to the test to the fullest. To select the intersection of different sounds that are harmonious as well. The music has a distinctive profile that was immediately compared to the adjustment by using the crossover in the Power Amp. The LOWPASS signal when the appropriate adjustment will be detailed bass. And softness. Even more vividly the details of the HIGHPASS. Clear to me as well.

Summarize

Quality and price levels are not high. Since it is a very cost effective. You can improve your system car audio. Are more likely to listen. If the crossover in the Power of You. Response was not good. Try updating your system with power electronics. PLANET AUDIO crossover of this, then you will not be disappointed with the sound quality is improved. If you are interested, you can try listening to the machine shop, a leading voice. The inquiry has found New Generation Supply Co., Ltd. Tel .02-559-2346-8.

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PIONEER DEH-P8450MP

CD/MP3 sleek dramatic.

PIONEER ultimate entertainment leader in imaging systems. And in the caraudio. To offer the latest, a radio-CD MP3 and a caraudio CD player that can play CD audio, CD-R, CD-RW, control cabinet, CD CHANGER AND WMA PLAYBACK WITH ID3 TAG, which is a system that was designed for. WINDOWS MEDIA system, which is exclusive only with the PIONEER Display Type FULL DOT-MATRIX ORGANIC EL DISPLAY, the screen can be considered as outstanding. The most advanced and now that has it. Which is designed to be seen in terms of graphics, 3D animation and realism with 3-BAND PARAMETRIC EQUALIZER, SPECTRUM ANALYZER, with the VOLUME A ROTARY and the screen slides FLAP FACE, Sound Focus EQ (SFEQ). you control the bass / treble signal and rear-set freely. Can name the disc.
Watch the tapes can be stored to prevent theft. However, the increase in another, it is a remote installation. You can install the remote control cars, they were steering.

An interest.

PIONEER DEH-P8450MP with the amplifier built-in MOSFET and Power Max 50 Watts x4 Display Type FULL DOT-MATRIX ORGANIC EL DISPLAY channels RCA 3 sets of front, rear, subwoofer, high-voltage 4. V and feature functionality EEQ (exclusive of PIONEER only) is called Easy EQ (EEQ) is set at the factory 5-mode, and set it by using a 2 (Super Bass, Powerful, Natural. , Vocal, Flat, Custom 1 and 2) the Parametric Equalizer and 3-Band that can adjust the volume, frequency and Q is the Loudness is available in 4 models (Low / Mid / High / Off) with Crossover 2-way set for the front / rear is adjustable 50/80/125 Hz signal HIGH-PASS, which is the rate of slope of the signal 12dB/oct 50/80/125Hz with adjustable LOW-PASS. rate of slope of the channel 18dB/oct Sub-Out Level, then adjust from - / +12 dB and can be controlled by phase. The player of the CD (Track Scan / Pause / Repeat / Random / Fast forward / Reverse CD) in the radio sector as a SUPER TUNER III preset 24 stations (18FM/6AM) are detailed below. The technical part is a bit DAC and 8x OVERSAMPLING frequency response from 5 to 20,000 Hz Max at + / - 1dB Signal to Noise Ratio 94 dB (CD) dynamic range 92 dB @ 1KHz.

The sound quality.

To test the radio -CD/MP3. This version has been tested in test 3 x 7 meters after the radio is already warm. We start by testing the radio - CD/MP3 the PIONEER DEH-P8450MP model by connecting the power amp version FORMULA-X FX-2000.5 and forwarded to the Speaker of the STAGE 2 separate versions of SPL 6.1 I. 0.5 cubic feet in the cabinet opening, using แchlenl 1-2, and 5 connected to the speakers, a subwoofer in a closet off of the JL AUDIO 10W0 version 0.7 cubic feet in size, only one side of the initial test of the radio receiver. It turns out that it can pass easily to radio waves, bidders have a very clear and very little noise. The test of a CD AUDIO output from the test is still the voice of the PIONEER sound out the simple and smooth, not prominent in any frequency band, one listen to any depth. And with great detail. With almost any style of music. I have, forgotten for more than a radio-CD over the other with pre-Owl V low, and we tested with a CD-MP3 sound close the CD-AUDIO, but the response of the midrange / mid. high, thin down a bit, which is probably a result of the recording sheet is not complete.

Summarize

With the ability to design. And technology in the production of G PIONEER you would have seen to date. And technology insertion into caraudio FRONTEND different versions and the newest version of the PIONEER DEH-P8450MP, under the model that incorporates features. And beautiful designs included in this edition caraudio FRONTEND perfectly. It allows you to play MP3 sound that is almost comparable to CD-AUDIO is for those interested. Or want to know details about the product. Or contact the dealer. Or install caraudio leading. The company, Pioneer Electronics (Thailand) Ltd. Tel .02-643-9511.

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BOSTWICK BOS-3400

Any new source

BOSTWICK can be considered as a quality car audio. And affordable. The sound is acceptable to all as well. And this time we offer the Power series amps new. The tear-down design. The shapes are modern, stylish design and develop a new range of better quality. The grading of equipment used to grade higher. Power Amp and a new character we have assigned to the test in this version, the BOS-3400 Power Amp 4-แchlenl high. I tested it.

Appearance

BOSTWICK the BOS-3400 Power Amp is a 4 แchlenl chassis made of aluminum casting, black. And the middle of a brand BOSTWICK, which is formed as an embossed aluminum finish. Cut with a beautiful body. The screen model. And details of the Bond character. The tank then use a small cooling fins under the engine. The top left. And the right to a cooling plate is a 2x4-inch aluminum chassis and has a cooling system that is already good. There are no problems when used for a long time the left side of the machine is the INPUT and LINE OUTPUT POWER CONNETER and right as Bolt, gold plated bowl well. The 40 amp fuse with a self contained all in one box.


Technical detail. Output at Voltage 13.8 Volts 4 ohms @ THD 100 watts x4 แchlenl and driving voltage is 13.8 volts at 2 ohms @ THD 150 watts x4 แchlenl and bridge mono at 4 ohms, the voltage is 14.5 V @. THD is a car audio power amplifier 300 watts x2 แchlenl resistance as low as 2 ohms, THD less than 0.04% @ 10 Watts Frequency Response 10Hz - 30KHz (- 1dB), the sensitivity of the input 100 ms voltage - 4 volts. resistance to the input 20 kilo-ohm noise ratio, the noise over 90 dB isolation stereo more than 70 dB range of power in e-crossover and low-frequency adjustable from 35 Hz - 250 Hz crossover field. high frequency adjustable from 35 Hz - 250 Hz switch mode STERO / MONO and switch the input. LOW / HIGH / FULL. Integrated adjustable bass boost 0 - +18 dB with LED indicator lamp and circuit protection and LED warning or protection with the shock of the speakers. And the temperature is too high, too.
The sound quality

To test the car audio power amplifier model BOSTWICK, we have tested in the test room after the warm up 3 x 7 meters, car audio power amplifiers, already We started testing by the radio - CD of SONY Model V7800X by connecting the car audio power amp BOSTWICK the BOS 3400 and forwarded to the speaker unit 2 of the STAGE model SPL 6.1 I fish the size of 0.5 cu. feet, using only the 1-2 and 3-4 แchlenl connected to speakers, a subwoofer in a closet off of the JL AUDIO 10W0 version 0.7 cubic feet in size, only one side of the output from the test of time. Can meet a variety of music genre. The sound that comes out is a focus on the details. The sound is quite open. Treble with the tone of a line of brushes and vibrant long-fried. A clear sense of youth, but is obviously a little too sharp for the neutral. Bass was tight, hard, tangible good, depending on the setting of the Network News. Feel fit enough to stage a fairly well done.

Summarize

Power Amp BOS-3400 BOSTWICK model can be considered as car audio power amplifiers, the new series. The sequel to the design configuration that is different from the original is enough. It is beautiful. And the right to use, compact. The sound quality is modified for the better. However, it remains unique. BOSTWICK and the identity of the same excellent service. If you're interested, you can sample the products BOSTWICK dealer. Or store the audio. Or for more information on the company's Hi-Fi International Limited Tel. 02-954-4710-4. Click here to Read more...

ขั้นตอนในการปรับเทียบไมโครโฟน

สำหรับขั้นตอนในการที่เราจะทำการวัดปรับเทียบไมโครโฟนนั้น

เราต้องพยายามที่จะทำให้พื้นที่บริเวณที่เราจะวัด ต้องมีความเงียบมากที่สุด เท่าที่เราจะทำได้ โดยปราศจากเสียงรบกวนทุกชนิด

เมื่อพร้อมก็เปิดใช้งานโปรแกรม TrueRTA เพื่อวัดการตอบสนองความถี่ของลำโพง กับ ของห้องรวมกัน ซึ่งจะทำให้เราได้ graph ที่ไม่ค่อยจะราบเรียบมากนัก ซึ่งเกิดจากการใช้งานฟังก์ชั่น Quick Sweep ที่โหมด 1/24-octave

ให้เราใส่ไมโครโฟนอ้างอิง Behringer ECM - 8000 ในช่องเสียบไมค์ พร้อมตรวจดูว่าการต่อสายถูกต้องหรือไม่ หลังจากนั้นทำการกดปุ่ม Quick Sweep เราก็จะได้ยินเสียงออกมาจากลำโพง และให้ผลตอบสนอง ขึ้นบนหน้าจอคอมพิวเตอร์ ทำการบันทึกซะ ในหน่วยความจำที่ 2

เอาไมโครโฟนอ้างอิงออก แล้วเปลี่ยนเป็นไมโครโฟนที่เราต้องการปรับเทียบ หลังจากนั้นก็ไปกดปุ่ม Quick Sweep และบันทึกเป็นหน่วยความจำที่ 3

ทีนี้เราก็จะเห้นกราฟทั้งสองอัน บนหน้าจอคอมของเราแล้ว โดยมีค่าออฟเซ็ทอยู่ระหว่าง - 3dB ให้เราเลือกเมนู Utility ของ TrueRTA และเลื่อนกราฟที่อยู่ต่ำกว่าขึ้นมา เพื่อให้มันเกิดการทับซ้อนกันกับกราฟด้านบน เมื่อได้อย่างที่เราต้องการแล้ว เราก็จะมาใช้เมนู Utility กันอีกครั้ง โดยคราวนี้จะทำการเลือก Difference และทำการลบกราฟออกหนึ่งอัน เราอาจจะต้องมีการลองทั้งสองวิธี แล้วเลือกเก็บ graph ไว้หนึ่งอันเพื่อการเปรียบเทียบ เมื่อได้แล้วก็บันทึกลงในหน่วยความจำที่ 4

สำหรับความไม่ราบเรียบของกราฟที่โหมด 1/24 Octave ให้เราปรับเป็นโหมด 1/3 Octave ก็จะได้กราฟที่ดูราบเรียบขึ้น

ต่อมาให้เราเลือกใช้เมนู File และเลือก Save เพื่อบันทึกการทำงาน ของกราฟทั้ง 3 อันที่ได้ ไปยังที่เก็บไฟล์ที่เราต้องการ

จากเมนู View ให้เราเลือก Hide All Memories เพื่อซ่อน graph ทั้งหมด แล้วคลิกเลือกหน่วยความจำที่ 4 ตัวกราฟก็จะแสดงขึ้นมาอีกครั้ง เพียงอันเดียวเท่านั้น

จากเมนู File เลือก Export Data และบันทึกข้อมูลการปรับเทียบเป็นข้อความไฟล์ (ASCII) ให้เป็นไฟล์นามสกุล .txt ซึ่งสามารถนำมาใช้กับโปรแกรมต่าง ๆ ต่อไป รวมถึง TrueRTA ด้วย

เมื่อมาถึงขั้นตอนนี้ เราก็จะได้กราฟที่มีการปรับเทียบของไมโครโฟนเรียบร้อยแล้ว


ข้อมูลอ้างอิงจาก. ลำโพง

เนื้อหาที่เกี่ยวข้องกัน. ลำโพง Click here to Read more...

สร้างไมค์ไว้สำหรับทดสอบลำโพงกัน

จากประสบการณ์ที่ได้พบเจอมากับตัวเองนั้น เรียกได้ว่าเกือบจะทั้งหมดของผู้ที่ใช้เครื่องมือวัดอคูสติก ยังไม่ค่อยเข้าใจวิธีการใช้เครื่องมือนัก เช่น การใช้เครื่องวัด RTA มาวัดการตอบสนองของลำโพง เพื่อเอาไปออกแบบครอสโอเวอร์ ทั้งที่ในความเป็นจริงแล้ว เราควรจะต้องวัดการตอบสนองความถี่ของลำโพงในลักษณะที่ไร้เสียงสะท้อน จากสภาพโดยรอบ เพื่อให้ได้ค่าการตอบสนองความถี่ที่แท้จริง จึงจำนำมาออกแบบพาสซีฟ ครอสโอเวอร์ได้

เหตุผลนั้นก็เพราะว่า เครื่องวัด RTA นั้น จะทำการวัดการตอบสนองความถี่ของลำโพง รวมเข้ากับสภาพแวดล้อมรอบ ๆ ที่มีการสะท้อนของเสียงรวมเข้าไปด้วย ทำให้การวัดไม่ได้ค่าความถี่ที่แท้จริงของลำโพง ดังนั้นเรามาทำความเข้าใจกันใหม่ และต้องให้ถูกต้องด้วยนะครับ

ข้อมูลอ้างอิงจาก. ลำโพง

เนื้อหาที่เกี่ยวข้องกัน. speaker Click here to Read more...