Question about MTX Thunder 8302 Car Audio Amplifier

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Subs will go off the wall with bass, but not in tune with music.

I just recently installed a pair of 10" mtx 5000 thunder series subs along with a 1000 watt d series mtx amp. the subs are going wild . they bump the loudest bass ever the only problem is that they are doing it constantly, with no tune what so ever. it is just thuuuuuuuuuuuuuuuuuuuuump until i turn down the gain or mess with the eq or freq. there is no bass or treble settings on this amp. these are the specs for the amp: RMS Power at 12.5V: 1 x 500W @ 4 ohms (<0.5% THD) 1 x 1000W @ 2 ohms (<1% THD) Dynamic Power at 14.4V (IHF-202): 1 x 850W @ 4 ohms 1 x 1500W @ 2 ohms S/N Ratio: 100dBA Damping Factor: >200 Freq. Response: 20Hz ∼ 200Hz Fuse: External 150A Dimensions: 14" x 9" x 2" (35.6cm x 22.8cm x 5cm) i think it may be my rca connections, but i realy don't know

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Re: subs will go off the wall with bass, but not in tune...

Hi, first disconnect the rca input, then switch on headunit and if the amp produces a constant bass thump it then means it has an internal fault. if the amp idles quietly then replace the rca cable, or try connecting the headunit lineout feed directly to the bass amp, in this way you cud find out if your fault is coming from the headunit or the equaliser. cheers

Posted on Aug 05, 2007

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I just recently bought a brand new MTX magnum amp and dual 10" enclosed subs deal off of amazon. They arrived today, and with the help of a friend who is good with car audio systems, we set the whole

the best thing to do is get in touch with amazon,and see what they can do about it,if you try to fix the problem yourself it will invalidate the garantee!

Dec 05, 2012 | MTX Car Amplifiers

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Need to know how to wire my system ...I have the infinity reference series 611a I was told it was a mono block but it has two channels on the exterrior...also I have two 12 inch MTX thunder dual voice coil...

it all depends on what kind of box the mtx subs are in as far as wiring the subs. The best way would be take the speaker wire from both sub boxes and run the positive into the right positive then the negative into the left negative. and run 8 gauge wiring kit to the amp because 10 might be to small and 4 is to big 8 gauge is perfect for this amp.

Jul 18, 2010 | Infinity Reference 611a Car Audio...

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MTX Thunder 3401 not responding. Lit but no sound.

turn down music open sub box and put another speaker at wire and check again if work means sub is ok if not check the signal cable, and put there the speaker to try signal

Apr 05, 2010 | MTX Thunder 3401 Car Audio Amplifier

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Mtx 801d amp turns on but no bass just high pitch sound sub is fine

if theres a switch on ur amp that says LPF Full or HPF put it on LPF for low pass frequencies

Mar 16, 2010 | MTX Thunder 801D Car Audio Amplifier

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Just wire one voice coil each into left and right rear respectively, in series with the original rears or if this is too quiet, wire both voice coils in parallel together and connect as per original single coil unit.

As they are 4ohms each they can simply be connected as simple speakers on each rear channel output, since thats exactly what they are, capacitors are used inside to make them react to bass frequencies only. Wiring them up is no different to wiring up a pair of 6x9's.

Oct 24, 2009 | MTX Thunder 4244 Car Audio Amplifier

1 Answer

Have kenwood mono amp 4,2,1 ohm capabilitie. What is the best sub to run. The amp is 1600 watts, howmany ohms and 1 or 2 voice coils.

Hello pelikant75,

The best answer depends on your budget for the sub(s) and exactly what kind of sound you are looking to get. Your amps RMS output at 4 ohms is 200 watts and at 2 ohms, it's 400 watts. I could not find that it was 1 ohm stable.

If you are looking for the absolute best bang for your buck, I would highly recommend a pair of entry level MTX 10" subs, model 4501-04, currently priced by Crutchfield at $49.99. And if you buy a pair, they throw in a free Bass Slammer BS210S sealed enclosure. The MTX's power range is 112.5 to 225 watts each, right in there with your amps output. 2 of them in parallel give you a 2 ohm load, just right for your amps best power. And they sound great. You simply can't find a better deal for $100 bucks!

If you want a little better SQ, a pair of Rockford-Fosgate P1S410's should be considered. Again, going to Crutchfield, they currently have this one "BOGO" (buy one get one) for $99.99. You will have to provide your own box, though, no free one with these.

Finally, if you want the best SQ, and your budget allows, consider a set of Alpine SWR-1022D's for $179.99 each. These have dual 2 ohm voice coils, allowing you to series the coils and parallel the subs, resulting in a 2 ohm load to you amp just like the MTX's and RF's recommended above. You will probably want a somewhat larger enclosure for the Alpines as well as a fatter wallet. Your amp is right at the lower end for powering them, so they probably will not be as loud. But they will sound good.

One thing we haven't discussed is the box. The enclosure is just as important, perhaps even more important than the sub(s). More accurate bass is generally produced from a sealed enclosure. A ported enclosure will be louder, but at the expense of sound quality. And whether it's sealed or ported, the enclosure needs to have enough internal volume for the particular sub you are planning to use. A sealed box in the range of .75 to 1 cu/ft will be OK for any of the recommended subs. Add about 15-20% more volume for a ported box and keep in mind that the port needs to be specifically sized for the frequency for which it is tuned.

Hope this helps.

Apr 12, 2009 | Kenwood KAC-8101D Car Audio Amplifier

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Need proper wiring details.

This is a dual 4 ohm sub. By wiring the terminals in series (one set of + to - from one side to the other) you will have an 8 ohm sub (most folks probably don't want this). By wiring in parallel (+ to + and - to - and connect the - wire to the - terminal on your amp and the + wire to the + terminal on your amp you'll have a 2 ohm sub.

Mar 12, 2009 | MTX TA4501 Thunder 4501 MonoBlock Car...

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Cant figure out my car audio problems!!!!!

There are a couple of tests you can perform. I'd first recommend checking the shield ground. You'll need an ohm meter. The details can be found on the following page.

RCA shield ground test

You can also test the output with the multimeter. Set the multimeter to AC volts. If it's not an auto-ranging meter, set it to a voltage range of ~2v AC. Disconnect the RCA cables from the head unit. Touch one meter probe to the outer ring of the head unit's RCA jack. Touch the other probe to the metal contact in the center of the RCA jack. With the head unit near full volume and a clean signal source, you should read at least one volt on musical peaks. If you have a bass disc or a test tone disc (~60hz sine wave), use those.

May 04, 2008 | MTX Thunder 8302 Car Audio Amplifier

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Tuning the amp

St the crossover to LP (low-pass), and around 80Hz for 12" subs or 120Hz for 10" subs. Turn the gain all the way DOWN. Turn the radio about 3/4 or 4/5 the way up. Adjust gain until subs start to sound a wee bit sloppy and then adjust back 1/8 of a turn. Also, DON'T turn the LOUD function on or the BASS all the way up on the radio.... these should really be flat as possible.

Sep 20, 2007 | MTX Thunder 404 Car Audio Amplifier

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