Question about Kenwood KAC-859 Car Audio Amplifier

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Plusin sound i just in stalled a cap and now im gettin a plusin through my subs plz help me!!!

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You have what is known as a ground loop! you can purchase a ground loop isolator or re-route your RCA jacks away from any power leads, I would try re-route first but if problem persists purchase a ground loop isolator or new wiring at wholesale prices at
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Posted on Feb 04, 2009

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I'm having problems with my subs (2 pionner preimer 12 inch subs 350 watt rms)and amp 2000 watt 2 channel(VS3506)the on light is still illumated soild green and the power is on the capactor but when i...


is ground on capacitor hooked up to gnd on amplifier ? if so it could be ya problem . ground cap to chassis and amp to chassis. try amp WITHOUT CAP and see what happens . Cap may also need charging with a resistor first . I'd remove cap(for now ) and retest amp for normal operation. Go from there.

Jun 13, 2010 | American Pro VS3507 Car Amp

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Hi ya, due to my stupidity i managed to connect the positive and negative the wrong way round on my a2150hct amp, this blew all 3 25amp fuses in the amp, ive replaced these and the amp now turns on fine...


There could be any number of things wrong with your amp. Normally there are diodes that protect against this sort if thing however applying reverse polarity on capacitors, regulators and FETs can cause untold damage. You will need to trouble shoot the amp by measuring voltages around the power supply.

Mar 21, 2010 | AudioBahn A2150HCT Car Audio Amplifier

1 Answer

Power on at amp but no sound from sub plz help


Make sure that you wired the amp to the sub-woofers. Check your wiring from your amp to your sub-woofers also

Jan 18, 2010 | Car Audio & Video

1 Answer

Car audio


Most likely the RCA's are running from the sub out on the deck to the amp. You need to run two sets of RCA's for a 4 channel amp. One for the sub out and one to the front or rear channel.

Hope this helps.

May 12, 2009 | Kenwood KAC-9102D Car Audio Amplifier

2 Answers

Amp or something cutting out.


Power caps store power from the battery and they feed constant power to the amp so you dont get no drainage! this could be one reason..

have you bridged both subs and wat gauge wire are you using.

these amps can only handle one bridged sub at 4ohms and this amp is recommended that u use 8gauge or higher. if your running to subs i normally reccomend using 4 gauge power wire as you get more rms power feed to the amp

you can get a power cap or anyother accersory cheap online at my suppliers.. caraudiosecurity << click to enter >> hope this helps and please rate me :)

Apr 22, 2009 | Rockford Fosgate Punch 401S Car Audio...

1 Answer

Best way to set up my car sound system???


This is a multi-tiered question. First of all, you're going to want to run the subs at a 2ohm load (if the amp is capable) to get the maximum power from it. Use the 5.0.1 for the subs only, that's what it's designed for. Run the cap in conjunction with only the sub amp as it has the largest power requirement. You can not link the two amps to increase output as they are first of all different amps and second of all not designed to run that way. Some amps are but they must be identical.
Set the crossover on the sub amp probably no higher than 80Hz (I like it lower than that but that's a personal preference) and turn the sub-sonic filter off.
Now, one of the most important things about a subwoofer is it's encosure. If it's a properly built box designed for your subs specifically then you should be ok. You dont' specify if it's ported or sealed etc. That would be helpful to know as well as it's approximate size (air volume).
The head unit can also have some bearing on how things sound, as I recall the Sony X-Plod units are fairly decent for the price and if set up properly should sound ok.

If you need further assistance please provide a little more info about the sub enclosure etc.

good luck!

Oct 08, 2008 | Car Audio & Video

1 Answer

I plugged int he rca's but he the lowest sounding bass possibe


kicker subs arnt ment to hit the lowest bass, unless you go spend a **** load of money, im talking 3000 wat amp, ant some 15' or bigger subs. the most commen kickers are 12' subs, so im asuming you have 12' subs, if not, this (said lightly) should work. try turning the bass boost screw on the amp to the middle of its turning range. this will offer the greatest balance between high and low bass. if you want more low bass, turn it past half. if you want more high bass, turn it down. i have mine set to mid range, but i also recently purchased 2 18' kickers. with every new set of subs, you should spend at least 15 min tuning the amp to get the best performance. every sub is different. hope this helps, good luck.

Jun 27, 2008 | Kicker KX800.2 Car Audio Amplifier

1 Answer

Problem with hifonics 1505 class d mono


The positives are connected together and the negatives are connected together. The two pairs of terminals are for convenience. You'd connect one speaker to a pair of positive/negative terminals and you'd connect the other speaker to the remaining pair of positive/negative terminals.

You need to confirm that you have a good signal feeding the amp. If you have another amp in the vehicle, swap the RCA cables between the amps to see if it makes a difference.

You also need to confirm that the speaker are working properly and that there are no broken connections in the wires. If you disconnect the speaker wires from the amp and touch the wires across a D-cell battery (for a fraction of a second), the speaker should pop. if it doesn't, check the wiring to determine why.

Dec 27, 2007 | Hifonics Brutus BX 1505D Car Audio...

1 Answer

No sound to speakers


is the sub dual or single?check sub first then try disconnecting all power including ground for 20min to discarge caps some amps mute if driven hard at low impedience .

Jul 01, 2007 | Hifonics BX1500D Car Audio Amplifier

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