Hey everyone how are you all? Im Jon.

So yeah my sound is just not working properly and no matter what i do I can't get it to work. Basically I have no BASS right now and I can't figure out why.

My system:
Clarion DXZ765mp HU (4V Preouts)
a crappy 600W Sony X-Plod amp (4/2/1)
2 10" subs.
Bandpass box.
Infinity Speakers 6X9's / 4X8's
4 gauge wiring.

My system is nothing special. The speakers are amped off the Head unit (I know not the best way to do it) But I get 19W RMS / speaker and the sound is pretty clear even at high volumes.

Problem is I get like no bass from my subs. The funny thing is when I install an even worse amp (200W 2 channel), I get more bass from it.

I have the input sensitivity on the Sony set at 0.3 volts (lowest) and the gain completey maxed out and I barely hear it at all. It sounds like when set up like this obviously!

So anyways.. I had 8 gauge wiring in there and decided today to upgrade to a decent 4 gauge kit hoping that would be sufficient.. There's no change. I grounded the battery to the chasis, connected everything with nice clean connections and I still get no power.

My car is a piece of which is why I don't have a very expensive system in there. But it when it works it sounds pretty damn good. Infinity makes good speakers and that deck works great for metal (I've tried a few).

My car is 97 4cyl toyota camry, (stock alternator), and brand new 950amp battery. Is it the alternator? I don't think so because even if I charge my battery with my external battery charger, it doesn't do anything.

Why am I getting no power? I'm not that much of a noob, everything is wired correctly. But the power I get leaves a lot to be desired. The amp works I've tested it in other cars. Hell I wish I could lower my gain, use a way higher input sensitivity and get the most out of my HU... what am I doing wrong!

You guys are the experts, any ideas?


Thanks for reading!

 

try putting a wire from the positive straight to the remote terminal on the amp. See if a light comes on the amp, it means it powered up. Then try playing something off your deck. Could be the remote wire not turning on your amp.

If it comes on already, hook up a ipod or cd player to it. Like a cord that goes from headphone jack to rcas. Plug the rcas into the amp and play the ipod. With the amp on. Could be bad rcas. If that works, there's something wrong with your deck.

 

Do you get any bass out of the subs or nothing at all? Is the amp powered on?

Does your deck have sub level control? Might want to make sure its on and turned up.

Also how do you have the subs wired? How many ohms are the subs?

 

higher is lower with regards to input sensitivity on an amp.

you now have your sensitivity (and i'm assuming some kind of boost when you say gain), both maxed out.

regardless of what the solution turns out to be, this is very dangerous for your amp and subs.
or who knows, your amp could already be going into overload or fried subs :S

 

check polarity of the subs, if its a bandpass box, and one side is crossed, your just going to have subs fighting each other

 

if you're running the amp in bridged mode make sure your connections are correct and also not out of phase

 

"a crappy 600W Sony X-Plod amp (4/2/1)"

You switched it out for a smaller amp and got more bass so obviously it's the amp. Why would blown subs have more bass with less power?

 

aren't 4ch's 4/3/2? Where do you get 4/2/1? Ya, check the wiring.

 

lol, maybe they are bridged down twice

 

There's nothing wrong with the wiring on my install. The polarity isn't crossed. My cables are very high quality true 4AWG wiring (not that cheap china "4-gauge" where the cable is all casing). RCA's are top notch too. The amp does turn on and I get a full 14.4 V going into it.

I think after reading a tutorial on bridging I know why my amp isn't working properly. I didn't bridge it. I can see now that when I went to the 200W it was on a 2 ohm load, vs. I assume 4ohm right now. So I'm going to re-wire it and see what happens.

I know that boosting the gain/bass boost to maxed out levels is extremely dangerous for the system. I wasn't worried about actually blowing it because the level were so low. After today we'll see what happens. If this thing fails me again ill go buy a nice alpine mono-block or burn my car!