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Stereo Amplifer
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 AUDIOBAHN MURDERED OUT 2 CHANNEL 1200W RMS CLASS AB MOSFET CAR STEREO AMPLIFER  US $158.15
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 ROCKFORD FOSGATE 300W RMS CLASS BR PUNCH BOOSTED RAIL 2 CHANNEL SPEAKER AMPLIFER US $168.15
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Here are some more information for Stereo Amplifer:
The most common and familiar piece of audio equipment is the radio/tape player/CD player/DVD Player which is generically described as a Head unit, which also can be called a head deck. It is also the most likely component to be upgraded with an aftermarket item. A recent development in head unit technology has been the addition of CD players with MP3, Ogg, WMA, AAC, and USB, Bluetooth and Wi-Fi support.
Not many people are aware of the fact that a good car audio system performs at its optimal best only when it is matched with the internal and external specifications of the car it is housed in. There is no point in getting a high PMPO, 500 watts car audio system and then housing it in the small (relatively small that is) confine of a Volkswagen beetle. At the same time, there is no use at all in getting a tinny, entry level car audio system and putting it in the spacious interiors of a hummer.
Car Audio amplifiers are used to give extra power to speakers in the system that need more power than what the stereo or head unit can produce. The most common amplifiers are used for subwoofers. Preferences for amplifiers greatly very. Today there are countless brands and prices to choose from. The most common amps are 1 channel (mono-block) or 2, and 4 channels. Some top brands in car audio amplification are: Pioneer, Kicker, MTX, Sundown Audio, RD Audio, Incriminator Audio, Digital Designs(DD), Resonant Engineering(RE Audio)(no longer makes amps), JL Audio, and Rockford Fosgate. Although there are thousands more to choose from.
Amplifiers are classified by how they make the power. There is Class D, Class A, Class A/B, Class B, and many variations on the Class D such as Class X, Class TX, etc. The internal components of an amplifier are generally referred to as "Amp Guts" and by how stout the amp looks on the inside you can get a VERY general idea on the power output.
Visit Our Website for more information and find different varieties of Car Audio Accessories: http://www.dynamicsounds.co.uk
Improving your car stereo system
The connections between the ISO systems can be given by the car stereo harness adapters, and hence it becomes necessary for you to have one car stereo harness adapters if you have a radio that has to be connected with your car stereo system.
Once you connect the radio with the car stereo system you can then hear the radio channels in your car stereo system. The advantage of going for the car stereo discount sale is that you can get to purchase the high quality products from famous manufacturers like Alpine, Philips, etc at very low rate of price. You can also be assured of getting the best out of such products with their longevity in terms of service life. Tweeters add some jingle sound to the music which you play through the car stereo system. Tweeters can be installed by you, and it is really not a big thing to be worried about. Installing tweeters requires not more than some thirty to forty five minutes, thus you shall not ignore installing the tweeters which will also add zip to the music. The tweeter ranges in size about five to six centimeters, so it is really not a problem to fix the tweeter. The amount of money which you have to buy the tweeter is nothing big to burn a hole in your pocket. Car stereo adapters are one thing which you should have along with the car stereo speakers to make the connection work.
Amplifier power rings are the next accessories which are necessary for connecting the amplifier with the car stereo speaker. The power rings are small with a size of about five to six millimeter. Using this amplifier power rings you can connect the power cable, which is essential for functioning of the car stereo speakers, with the earth. This amplifier power rings is necessary for preventing any short circuits. If you have installed the amplifier power rings then you can be sure of safety. The amplifier power rings come in cluster of four, so that handling of the power ring is easy. The amplifier power rings are coated with some gold which will give great aesthetics and will also help in identification of the amplifier power rings. If you idea of installing an amplifier then you should use the services of amplifier power rings.
The cost of all the accessories that are needed for the effective functioning of the car stereo system is pretty much half the original price if you go to the car stereo discount sale. The sub woofers and the woofers should match the specifications of the speaker of your car stereo system; otherwise there will be noise amplification. You can reduce the noise from the outside world which interferes with the sound of your car stereo system. The last thing which you should consider is the cost of all the accessories and you can make some savings if you opt for the car stereo discount sale which is offered in the wake of festive seasons. So, always go to the authorized dealers of brand products.
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Visit our site for more information about car stereo Adapter and find the right Autoradio for your car.
what brand of Amplifer schould I buy for my car stereo that is not too expensive(200)?
Look for this when buying an amp... http://www.crutchfield.com/S-wn5MvZJYp33/popups/cacomp.html
CEA-2006 Compliant
On May 28, 2003, the Consumer Electronics Association published standard CEA-2006, "Testing & Measurement Methods for Mobile Audio Amplifiers." This "voluntary" standard advocates a uniform method for determining an amplifier's RMS power and signal-to-noise ratio. Using 14.4 volts, RMS watts are measured into a 4-ohm impedance load at 1 percent Total Harmonic Distortion (THD) plus noise, at a frequency range (for general purpose amplifiers) of 20 Hz to 20,000 Hz. Signal-to-Noise ratio is measured in weighted absolute decibels (dBA) at a reference of 1 watt into 4 ohms. This applies to both external amplifiers and the amplifiers within in-dash receivers
If an amp doesn't have this rating, it may not produce the watts it says it does.
http://spkrbox1.spaces.msn.com/ for real "sound" advice.
Your system won't mean squat without a well designed box to put your subs in. Some manufacturers have recommendations as to dimensions of various types of boxes. It is best to find someone who builds boxes if you go with something other than a sealed box.
You should always match up RMS (Root Mean Square) watts of Subs and amp per channel as well as impedance's(resistances). When a sub has rating of 600 Watts MAX it really has an RMS rating of about 200 Watts RMS. RMS is the nominal wattage your most likely going to get out of it. Remember, a 200 Watts RMS amplifier has more power output than a 200 Watt MAX.
If your amp is rated at 4Ω don't subject it to 2Ω, it will fry.
Here is the formula for subs in parallel:
Z = 1 / (1/sub1 + 1/sub2 + 1/sub3 + ....)
For series, just add them up (sub1 + sub2 + ...).
You can mix and match these equations to get the right impedance required by your amp.
Example 1: Amp is 2 channel and rated at 4Ω when bridged, 4 subs @ 4Ω each. If I connect two in parallel and the other two in parallel and connect the two pairs in series, I would have a total impedance(resistance) of 4Ω. So to the amp, it's just one sub when bridged.
Example 2: Amp is rated at 1Ω mono, 2 subs @ 4Ω each dual voice coil. If I connect two voice coils in parallel and the other two voice coils in series and connect the two subs in parallel, I would have a total impedance of 1.6Ω. Which would be perfect for a 1Ω stable mono amp.
You should use a capacitor as well.
Recommend for every 500 watts MAX you use a .5 Farad cap
Example: 1000 watts MAX - 1 Farad cap
You will also need what's called a "line level converter" if your stock head unit doesn't have RCA outputs or your amp doesn't have high-level inputs.
Try http://www.soundomain.com/shop you can find some really good deals, and this site is manufacturer certified. VERY IMPORTANT WHEN SHOPPING ON-LINE!!!
If you like I can send you some plans for reference. My plans are for a 4-th order band-pass bass box (A.K.A. bass-reflex) that holds two 12's.
Also included are java calculators you can use to figure parallel and series values given Ω values, tips on box building and types, calculating port diameter and length(if used), calculating box dimensions for types of boxes (sealed, wedge, cylindrical, etc.), materials needed and even how to make a jig for cutting perfect holes for your subs.
Just e-mail me sparky3489@yahoo.com
My system
Blaupunkt TSw1200 subs with a Sony Xplōd XM2200GTX.
My amp is 1200 watts (200 Watts RMS X 2), subs are 600 watts (200 Watts RMS) each, cap is 1.5 Farad w/digital readout
SPL is about 112 db each sub
Total cost(so far) = $410
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To the other people ranting about my answers.
Some people have made pot-shots at my post because my answers are "one size fits all" as one person put it. I have gotten at least 25 best answers (and growing) with e-mails requesting more information from this same post since I posted it.
I'm just trying to be as informative as I can be. There might be something the poster didn't think of, forgot about or doesn't know.
These peolpe may not like my style of response, but then, no one asked them.
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