installed my system but not impressed.

For that much you can get a handmade box shipped from this dude:

http://www.fishercustoms.com/products.html

But if you must have this box NOW ... I guess I would go with the circuit city one. It's got about a 3.5cu ft volume before you subtract the vent. (no specs on page). After port you're probably looking at 2.75-3.0cu ft final. The q logic says only 1.25cu ft per sub.

I agree, prefabs ****. They don't even tell you the volume or the tuning! I built my first slot port recently. It sucked but it came out wicked nice and I'm happy I did it.

 
i'm going with wiring

Check to make sure the wires are correctly setup. Also, make sure if your amp is mono and your running a sub to each of the plugs on the amp and letting the amp bridge it for you, that your not doing one backwards. I did that before, subs play, but very quietly.

 
For that much you can get a handmade box shipped from this dude:http://www.fishercustoms.com/products.html

But if you must have this box NOW ... I guess I would go with the circuit city one. It's got about a 3.5cu ft volume before you subtract the vent. (no specs on page). After port you're probably looking at 2.75-3.0cu ft final. The q logic says only 1.25cu ft per sub.

I agree, prefabs ****. They don't even tell you the volume or the tuning! I built my first slot port recently. It sucked but it came out wicked nice and I'm happy I did it.
it sucked, but it came out nice. is it just me, or does this not make sense

 
it sucked, but it came out nice. is it just me, or does this not make sense
It sucked trying to figure out how to design one correctly that would fit in my shallow *** trunk. It also sucked cutting mdf and breathing in dust because i'm too stupid to wear a mask, not to mention the cleanup of that mdf dust that coated everything in my garage.

The box quality came out great. My cuts were exact for once and I used titebond and brad nails.

 
I'm not sure exactly how loud it is, but I would definitely check out the amp and the connections before you go spending money on a new box. I've heard 2 CVRs with 400 each even in a sealed box, and they got plenty loud. First, make sure the subs are wired properly and in phase. Check your low pass crossover on the amp to make sure they aren't too low. And verify that the wiring you've done will give you the proper load for that amp (I believe that Kenwood 900w does its power at 2 ohms). If it's still screwed up, crack out the digital multimeter (DMM) and check the voltage coming out of the amplifier at normal listening volume. Take that voltage, square it, and divide it by the load on the amp (ohms). This is roughly how many watts your subs are getting.

I know this is a lot to do, but it's probably a good idea to make sure everything is right before you go and spend more of your hard earned cash. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

Also I'm not disagreeing that those subs are much better ported, but it's much more cost effective to see how good your current setup can be before changing it up.

 
Check your amps output with a DMM when setting the gain. Also, try using a 60hz 0db test tone burned to a cd on repeat while setting the gain. I bet you're not putting out a full 800 watts.
very good advice buddy... you know exactly what your talking about. go get a 1 watt spaeker from radio shack too. if you wanna get real technical use an iso meter too...

 
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