Question about Kenwood Car Audio & Video

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Hi I have two 500 watt mono channel amplifies one is a AlpinM500P - M500 the other a Kenwood KAC - 8105D and I have JBL GT 12" subwoofer with built in 450 watt peek 120 watt RMS combo that had its speaker blown and I installed into the sub box a new Rockford fosgate punch P3P but the JBL amp is under powered for the new P3. So what I wanted to do was ether forgo using the built in JBL Amp and instead strap both the 500 watt rms alpine and kenwood amplifies together onto the back of the JBL GT Bass Pro sub box to power up the Rockford Fosgate punch p 3 with both amplifies giving the dub a total of 1000 Watts RMS power. Can that be done will it work in a strapped configuration or should I try to dash chain the two amps independently of each other sharing the low frequency RCA out puts from the head unit to each amp and run speaker wires from both amps to the sub? Thanks

Posted by Darren Baillie on

  • Darren Baillie
    Darren Baillie Oct 10, 2017

    The sub Thatcher's with the JBL sub box amp combo wasn't I dont think anyways. But the Rockford Fosgate Punch P3 dose have dual voice coils.

  • brian williams Oct 11, 2017

    Run one amp bridged with one voicecoil and the amp with other coil.

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brian williams

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  • Master
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Is the sub dual voice coil?

Posted on Oct 10, 2017

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Anonymous

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SOURCE: Subs and amp problem

2 subs and 1 amp

Posted on Nov 19, 2008

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blueextc3221

blueextc3221

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SOURCE: adjusting wattage on kenwood kac 9103 class D mono amp

That amplifier is 900W x 1 @ 2ohms.
If your subs are 4ohm SVC wired Parallel, resulting in a 2 ohm load, each sub will only see 1/2 of the rated power. (450W ea.)
Your gain (sensitivity) setting should be between 75% and 85% to max. You will be fine.

Posted on Jan 03, 2009

Robert Struzinski

  • 185 Answers

SOURCE: what amp would be better to use with what speakers/sub? I have a KAC-7202 kenwood 920W maximum power (150wX2 RMS, 4ohms) (230wX2 RMS 2ohms) and then the other amp I have is a Alpine MRP-M500 mono powe

I'm using that Alpine right now for 2-12" subs and I have compared it to 6 or 7 other amps this month and most were 4 channel 150Watt/Channel Bridged to 300Watts x 2 and found the Alpine to be superior in both sound quality and loudness. The Alpine has also not turned off even with full volume for hours at a time, Very solid amp I was very surprised due to it's size!

Posted on Apr 04, 2013

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How do i get full power out of my kenwood kac-1520s amplifier hooked up to two 12" audiobahn 400 watt subwoofers

Your amp is under powered for those speakers (350 max. watt). Even if your subs were 2 ohm your amp will only put out 75 watts X 2 at 2 ohms, if you bridge that amp you might be asking for trouble . I'm guessing there both 4 ohm. Look around for a 2 ohm stable mono amp with more power and you won't be sorry. Ray
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What amp would be better to use with what speakers/sub? I have a KAC-7202 kenwood 920W maximum power (150wX2 RMS, 4ohms) (230wX2 RMS 2ohms) and then the other amp I have is a Alpine MRP-M500 mono power...

I'm using that Alpine right now for 2-12" subs and I have compared it to 6 or 7 other amps this month and most were 4 channel 150Watt/Channel Bridged to 300Watts x 2 and found the Alpine to be superior in both sound quality and loudness. The Alpine has also not turned off even with full volume for hours at a time, Very solid amp I was very surprised due to it's size!
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How many watts in a Kenwood kac-9104D

Kenwood KAC-9104D

Product Features
  • Mono subwoofer amplifier
  • 500 watts RMS x 1 at 4 ohms (900 watts x 1 at 2 ohms)
  • Variable low-pass filter (50-200 Hz at 24 dB per octave)
  • Bass boost (0-18 dB at 40 Hz )
  • Subsonic filter (15/25 Hz, 18 dB/octave )
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I need an appropriate speaker for my kenwood amplifier kac-5202

This amp is stable down to 4 ohms bridged at 120 Watts or 2 ohms stereo at 60 Watts X 2. If you are going with the bridged mono hookup just make sure the impedance of your subwoofer is no less than 4 ohms. A good rule of thumb is to be at least double of what your amps rated output power is. So if your amp can put out 120 Watts into 4 ohms then get at least a 240 watt subwoofer.


Do not exceed the rated load for your amp, you will damage it. Here is the datasheet for your amplifier

http://manual.kenwood.com/files/B64-3031-00_En.pdf
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Two questions. 1) can my amplifier over-power this sub; kicker L7 15 inch dual voice coil 1,000 watts RMS wired for 2 ohms? 2) is my amp too small for this sub-woofer? thank you for your time.

No, your not over powering your L7, your underpowering your subwoofer.
Your Kenwood is
500W x 1 at 4ohms [20-200kHz 0.5% THD]
900W x 1 at 2ohms [100Hz 1.1% THD]
Your L7 is:
Max Rec Amplifier Power (WATTS PEAK/RMS)* 2000/1000But its ok for your subwoofer, alteast your not giving it to much stress. But personaly, get another mono amplifier that would match your subwoofers rating.

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What amplifier do i have to used for the kfc-w3009

http://www.sonicelectronix.com/item_22574_Kenwood+KAC-9105D.html

Take a look at this site this amp is what your looking for for any sub you want a mono block it combines internally both the left and right channel into one.
3helpful
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AMP

That amplifier is only stable to 2 ohms.
You will only be able to use one Dual 4 ohm Subwoofer wired in parallel (all + to + on amp.... all - to - on amp.
This will yield a 2 ohm mono load.

It is impossible to wire (2) dual 4 ohm voicecoils to achieve a 2 ohm mono load.

If you're set on using both subwoofers - they will not be getting as much power from your amplifier with a 4 ohm load - but it is your only option.


SEE THIS LINK for the wiring diagram.

Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.
1helpful
3answers

Adjusting wattage on kenwood kac 9103 class D mono amp

That amplifier is 900W x 1 @ 2ohms.
If your subs are 4ohm SVC wired Parallel, resulting in a 2 ohm load, each sub will only see 1/2 of the rated power. (450W ea.)
Your gain (sensitivity) setting should be between 75% and 85% to max. You will be fine.
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Power of amplifier

If the KAC-7252 is to be bridged, the operation mode switch on the top of the amp is set to mono. When switched to Mono, the signal from the left channel input only is used. Bridging creates 4 times as much power so the KAC-7252 delivers 170 Watts per channel so that 340 watts total so that value 340 is multiplied by 4 and that gives you 1360 watts of power. so it will drive them.
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