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Car audio I recently purchased 4 new speakers for my car. 2 6.5's with 150 watss RMS and 2 6x9's with 300 watts RMS. What kind of amp do i need to power them without under or over powering them? And am i going to need 2 seperate amps?

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Depends on what sort of amp you have iv got american pro 1407

Posted on Jun 01, 2008

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Rms watts per channel @ 4 ohms


Take the peak to peak power rating and multiply it by .727
that should be the RMS watts.

You don't have to worry too much about new stuff, but if you are using an older stereo amplifier that is rated for 8 ohm speakers then you should not use 4 ohm or they will pop the finals in the amp.
You could use 2X 4 ohm speakers in series on every channel and it should be ok.

Jan 31, 2015 | Lightning Audio Car Audio & Video

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I'm new to the Car Audio seen.I just bought four 6x9's.Now I need a good Amp to push all four of them.Here's what I have.Sony XS-R6945 4 Way 6x9" 800 watt Full Range Car Stereo Speakers Power...


Look for a 4-channel amp that pushes 50 watts RMS @ 4 ohm.
Make sure the amp is CEA-2006 compliant.
Ignore peak or max watts as these are arbitrary numbers.

More info here - sparky3489.webs.com

Jan 24, 2015 | Car Audio & Video

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I need a manual for Diamond Audio's D971 component speakers, I need the thiele small parameters of these speakers


General •Speaker type car speaker Manufacturer Diamond Audio Technology Inc. Features •Amplification type passive •Driver configuration 2-way •Woofer size (inches) 7" m, 30mm m •Nominal (RMS) output power 200 Watt •Max (RMS) output power 400 Watt •Response bandwidth 35 - 30000 Hz •Input impedance 4 Ohm •Sensitivity 92 dB •Connectivity wired Compatibility ' Accessories •Included accessories mounting hardware Cutout & Mounting Dimensions •Diameter 6.3 in •Depth 2.7 in General •Manufacturer Diamond Audio Technology Inc. Thiss should help you out.

Jan 05, 2015 | Diamond Audio Car Audio & Video

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Which speakers (Front/Rear) to buy that match Kenwood KAC-M846 4/3/2 Channel Amplifier.


I don,t no where you are reading thease articles from,I installed car audio equipment for over 40 years, Untill i retired a couple of months ago, Who ever is writeing those sort of articles does not have the slightest clue what they are talking about, It is the opposite way around, It is allway better for yor (Speakers) To handle more power then what your amp puts out, Then you will not blow the spaekers, It is best to get speakers at least 20 watts more then what your amps maximuin (RMS) Watts are, Hope this helps you out, (PS) 50 watts (RMS) Is what most people go for, It is in no means (Under) Powered.

Nov 05, 2012 | Kenwood Kac-m846 4/3/2 Channel Amplifier...

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How much watts does a JL audio 10w0-8 have?


the 10w0-8 are 8 ohm speakers and rated rms is 125 watts, an amp running 300 watts is perfect and you need to wire it in series to pull a 4 ohm load from your amp. if amp is larger than 300 watts rms it will kill the w0's in a quick minute.

Mar 15, 2012 | Car Audio & Video

1 Answer

What type of amp do I need for apair of rfdj1 12" dj 600w band speakers?


The 600 watt rating is FAKE like most of our advertising and will be either 600 watts PEAK or 600 watts PROGRAM. If it is Peak, use an amplifier with no more than 100 watts a side RMS... If it is program rating use an amp with no more than 150 watts a side RMS but that is pushing it for speaker safety. Also pay attention to the spec of the amp as to what it will output at the impedance of the speakers. I read the spec on the speakers... they are rated 150 watts RMS, NOT 600 watts... Use an amp rated at 150 watts RMS MAXIMUM at 4 ohms per side. Also don't turn up the bass excessively or you be buying new speakers. Twelve inch speakers would be adequate for a 20 by 20 room at SAFE listening levels. If you want driving bass, you need to get an 18 inch subwoofer.

Jul 14, 2011 | Rockford Fosgate Rfdj1 12" 2-way Passive...

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In my boat is a Clarion CMD6 head unit with two rear CMQ1620R speakers, it distorts at medium to high volume, you cant turn it up load when going.Wishing to put two new speakers in the front, cannot cut...


Best bet is to take your boat to a qualified Marine Audio dealer (generally not a boat repair shop or marina), or to a good quality Car audio store that is insured to work on boats (separete insurance usually).
When it comes to boats, you need lots of power and speakers.
First thing to do is make sure what you have is properly installed. Then determine what is "distorting" .. is it too much base, purely volume or what.
Most boats we do (wakeboard style and river boats) we do: 40-75 watts RMS per speaker 4-6 speakers in boat 1 10" or 12" sub with 200-300 watts RMS Tower speaker if requested with 75-125 Watts RMS per speaker

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I need a wiring diagram for the jensen lxa400. Pushing 2 kenwood 6x9 (200 watt rms each) and 2 dual voice coil 12's (300 watt rms each) in a truck box. Everything is 4 ohm. Thanks, Curtis


you shouldn't need a diagram all you need is these items here.

purchase a 4gauge wiring kit

run a a power line from battery to amp with a in line fuse 6in from battery.

run a ground from car frame to amp. ( scratch paint and screw it down with an eyelet for good contact)

run a remote from radio to amp.(blue wire)

run rca's from the radio to the amp ( sub input on back of radio)

finally connect your speakers.

Mar 26, 2010 | Jensen LXA400 Car Audio Amplifier

1 Answer

What amplifier should I get?!


planet audio vrx-600.5 it runs 100watts rms to all four corners and will give you 300 wats rms to a 2 ohm sub all day long.

Jan 27, 2010 | Car Audio & Video

1 Answer

2006 12" Kicker L7 4 ohm


first whats the range in terms of WATTS that your 12" sub can handle in 4 OHMS ? second , lets check the AMP , POWER ACOUSTIK 1800 WATTS , Now thats a lot of power to drive a single 12" sub speaker . your amp is 1800 watts , per channel is around 500 watts , if BRIDGE thats around 1600 watts rms for ONE channel , if your sub can handle that kind of wattage fine , but it will not blow the amp , what it does is shuts down , some kind of protection mode , it will come back on after a minute or so. I suggest to use one channel in stereo mode , or purchase another sub to use the other channel. i hope this helps AJ

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