Question about Kenwood KAC-9152D Car Audio Amplifier

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How to install this amp properly?

Ho do i run my 2 X 4ohm subs to this amp?
I want to get the max out of this amp
The terminals are messing me up?? ++ - -
Is this amp not bridgable?

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The amp is a mono amp with only one output channel so it cannot be bridged. You'll use one positive and one negative per speaker. The positive speaker terminals are connected together and the negative speaker terminals are connected together so it doesn't matter which you use for the individual speakers.

Posted on Jan 11, 2008

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Hi there i have just purchased two newer model type r alpine subs and a week ago i got a great deal on a rockford fosgate 800 a2 amplifier. The amp has two outputs and don't know exactly what ohms are at...


if you bridge it i believe you run at 4 ohms instead of 8 even if the subs are wired together i would not bridge it for fear of blowing the subs. if you where to bridge it it would be the left channel on one terminal and the right on the opposite terminal. but i highly advise against bridging it as they are wired together. its running at the proper impedence NOT bridged.

Mar 14, 2011 | Car Audio & Video

1 Answer

I have a boss rt645 2ch 1400 watt amp would this amp properly push a pair of 12 inch mtx terminators.


That all depends on the wattage of the subs. also the independance of the subs. If your amp is 1400 watt, maximum you want is 2 600watt subs. if your subs are higher you will blow your amp eventually as your amp isnt powerful enough to pump out to that level.You should never have your amp fully turned up to max, 80% is perfect and will not make your amp blow. Hense why you want your subs less than the max output of your amp.

Mar 04, 2011 | Boss AUDIO RT-645 2-Channel Riot Series...

1 Answer

Just got two AR 312 HO speakers from my brother. I have a Yamaha HTR 6250. The speakers have (2) sets of cable hook up. One I assume is for built in sub woofers? Do I hook one normal and one to the sub...


do not use those speakers with that amp, those are 4 ohm speakers, which could damage your 8 ohm yamaha amp. you will have to get a 4 ohm capable amp to run the highs, and another 4 ohm amp to run the subs.

car amplifiers are currently 4 ohm, or even 2/1 ohm stable, but few, if any modern receivers can run at anything lower than 8 ohms without a danger of overheating. you may have to get a vintage amp(s), like a 1970's marantz receiver, or a 1980's to early 1990's kenwood power amp, because 4 ohm home amps are pretty scarce nowadays.

whatever amp(s)( you get, verify that they are DEFINITELY 4 ohm stable.

Nov 06, 2010 | Acoustic Research 312 HO Speaker

1 Answer

What size amp do i need to run 4 1000 watt pyle 10's bridged


well first of all you cant bridge subs... you can bridge an amp... and for 2 they are probablly not 1000 watts, make sure you understand RMS and what the sub can ACTUALLY HANDLE properly... i would get a 1000 to 1500 watt RMS that is RMS RMS RMS RMS amp not one that says 2000 watts MAX POWER cuz thats cheap ****... get a kicker JL hifonic alpine or something in that category that actually tells you the TRUE power output of the amp... then run those 4 subs in a parallel circuit so its like really only having 2 subs. make sure then these subs do not run less then 2 ohms at the terminals while in a parallel, then bridge these subs acting as 2 subs not 4 to your TRUE 1000 watt amp and you should have a good powerful system

Mar 19, 2010 | Pyle 10'' Subwoofer Tube w/Amplifier Car...

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I'm planning on installing a system in my pick-up and I was hoping I could get a little assistance. I was planning on using a pair of 5'' McIntosh ms486 coaxial speakers (120w max 4 ohm)in the front doors...


First of all use the larger output amp to power the sub. You can tell if its free-to-air if in the middle of the magnet there is a hole for "air" to flow freely. The advantage of free to air is they dont require much of an enclosure or next to none so you can mount it on a single piece of mdf wood and use the cab in the truck as an enclouse itself. I would bridge the amp for the sub to mono but be careful to tune so you dont "distort". Secondly the amp for the mid's shouldn't be bridged any maybe you could run the front and rear speakers off the same amp.. I would get an amp for rear and front speakers each and one for the sub. Your ouput rca's should goto the cross-over first then to the amp (sub) - then wired to your sub (mono) which is bridged. Ensure to tune your cross-over to lowest frequency for sub. Its easy to bridge an amp if its 4 channel.. looking at the speaker terminals it will look like ( + - + -) use the two outer most terminals to bridge to mono.

Sep 13, 2009 | Sony Car Audio & Video

1 Answer

I cant hook up my amp


Hello cesar199064,

These are the steps you required to install your amp and subs:

1) Purchase an amp wiring kit with 2 or 1/0 gauge power and ground wires.
2) Decide on a location to mount the amp where it will get proper airflow and will not interfere with operation of the vehicle. Closer to the battery is better. Decide on the location and install the sub enclosures.
3) Locate a place on the metal body of the vehicle within about 3" of your amp for the ground. Connect the ground wire to the amp ground terminal and to BARE METAL on the vehicle.
4) Run power wire from battery positive (+) using one of the amp kit ring terminals through a 100A fuseholder to the amp positive terminal. DO NOT install the fuse yet.
5) Run a "remote" wire from the remote turn-on lead (usually blue or blue/white) of your dash mounted head unit to the amp turn-on terminal. Run a set of RCA cables from the preamp or subwoofer outputs on the head unit to the amp inputs.
6) Run speaker wire, preferably at least 12-gauge, from the amp output terminals to your subs.
7) Check all of your wiring. Make sure that no insulation was damaged or peeled off during the running process. Make sure there are no loose strands touching adjacent terminals or bare metal.
8) Use a multimeter set to read "ohms" and test from the negative battery post to the amp ground terminal. You should read "0".
9) Install the fuse.
10) Turn on your head unit and listen to those big Kickers thump.
11) Adjust the amp settings according to your manual.

The best place I've found for in depth information on audio installs is The Install Doctor. You'll find step-by-step procedures, color photos, wiring details, and even the tools required. I recommend that you begin with the "tech docs" link and read through some of the PDF documents.

Hope this helps.

May 08, 2009 | Kicker ZX10001 Car Audio Amplifier

1 Answer

I have all the wires running right but for some reason my amp is not picking up or pushing my subs. could the rca jacks be messed up on the stereo?


According to the specs for the xo 1945- the output is; 50W x 4 Max Power Output , and I do not see a pre amp output listed. So I think to connect subs, you will need a separate AMP.
The way this works; the rear speaker wires from the xo 1945 hook into the Add-on amp, for example a 4 channel amp. In a 4 channel amp, the rear speakers come off two of the channels of the add-on, and the subs come off the other two channels. There is also the option of bridging two channels for more output power to ONE sub.
You did not mention what size sub(s) you were thinking of adding, but keep in mind that the ox 1945 puts 50 watts MAX per channel. So, if you add two 12" subs and a 1500 watt amp to drive them, your total sound is going to be very uneven.
If you go on line and look up auto audio or amps, you'll get a good idea of all the Sub and amp options that are available.... Hope this helps.

May 02, 2009 | Car Audio & Video

1 Answer

Orion hcca 12d subwoofer wiring


I had two of those they are awsome subs! anyway your best to connect them in parallel that is both positive wires connected together and both negative wires connected together then connect pos and neg to amp in a bridged configuration if its a 4 channel amp - this will put your subs under a 2ohm load and make sure you turn down gain and set your filter to low pass (very important!) turn up gain in increments till your happy :) rock on!

May 04, 2017 | Car Audio & Video

1 Answer

Vibe cbr1 subwoofer


Might not be eathed properly. Check the earth on the battery as well. Theres more juice goin through there now so it might need a bigger earth or ground.

Jan 08, 2008 | Vibe CBR10 Car Subwoofer

1 Answer

Amplifier cuts out when turning the gain up


Make sure the amp is getting good power and ground - there should be 12V across the two terminals. Also make sure you're giving it the proper ohm oad - how do you have your subs wired up? Do your headlights or interior lights dim when this happens?

Sep 16, 2007 | Eclipse EA3422 Car Audio Amplifier

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