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Old 09-24-2004, 08:49 AM   #1 (permalink)
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I have a 10 in infinity perfect vq powered by a phoenix gold amp putting out 400 rms, you cant even hear the sub out of my trunk. WTF.
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Old 09-24-2004, 10:35 AM   #2 (permalink)
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Unless you are exagerrating then the amp isn't getting a good enough input signal. If you have a well sealed trunk (no speaker holes in the rear deck or ski passthrough) then you might have to open it up a bit. I have an E46 and punching out the ski passthrough was a dramatic improvement.
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Old 09-24-2004, 11:27 AM   #3 (permalink)
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is that a dual voice coil sub(I'm to lazy to check). If it is, check to make sure both coils are in phase.
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Old 09-24-2004, 12:47 PM   #4 (permalink)
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First, what are the settings on the HU? Sub on? Sub volume level? X-over? These will all depend on your HU and may be slightly different, but playing around with them may find something that increases the output.

Second, whats the amp set at? Is the xover on LP? Bass boost on? Whats the gain (this usually the first thing to check with the amp) set on? If you know you HU doesn't have any kind of bass features adjust this first. If it does though, the gain can be all the way up but if the HU settings don't corrospond, it wont matter.

Third, is the sub connected properly? Crossed wires can affect the sound greatly too.
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Old 09-24-2004, 10:58 PM   #5 (permalink)
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Yeah, if you have a DVC, you have to be careful. Is that Phoenix amp mono or do you have a two channel amp bridged? If DVC, do you have the voicecoils wired in a 2ohm or 8ohm config (provided it's a dual 4ohm)? In addition to Prez's questions, all this can make a huge difference as to how it sounds.
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Old 09-25-2004, 01:00 AM   #6 (permalink)
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Is the sub actually moving to the beat?

Is it in a sub box? If so, which style?
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Old 09-30-2004, 10:01 PM   #7 (permalink)
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the amp is a mono class d. bass boost on, gain just about to max, and lp and what not adjusted correctly to allow for alot of bass without sounding to bad. Sub is single voice coil, cant remember what type of box, but i think its 65 cubic inchs, sealed. Hu is a very nice alpine, with various bass controls, iv tried various settings, and i have fold down seats. so its not a problem of getting to the cabin.
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Old 10-01-2004, 12:23 AM   #8 (permalink)
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possibly crossed positve and negative inputs on the sub or amp. I'd pull the sub and make sure the polarities match.
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Old 10-01-2004, 08:27 AM   #9 (permalink)
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Yup, make sure that the speaker lead from the amp to the sub box, as well as from the box to the sub (on the inside) is all consistent. +pos to +pos and -neg to -neg.
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Old 10-01-2004, 12:12 PM   #10 (permalink)
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that was the first thing i checked. Maybe i got a bad one, idk
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Old 10-03-2004, 09:08 PM   #11 (permalink)
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Well, today i decided to make my car look pretty and hide all the RCA cables and remote turn on cables, and now my amp wont turn on. It did before I messed with everything. Voltmeter says its getting 12v from battery, its getting a ground. I tried two different sets of rca cables, the remote turn on wire is only putting out 6v, idk if thats normal or not. Isnt that supposed to put out 12v as well. When i touch the remote wire to where its supposed to go on the amp, i hear the normal click it makes when it turns on, but then right away, it hear it click off, and the led doesnt come on, signaling me its not on. Any ideas?
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Old 10-04-2004, 12:04 PM   #12 (permalink)
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Be sure none of your other wires are cross anyplace else..

try disconnecting the subs from the amp. does it still click off?

does another amp do the same thing?
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Old 10-06-2004, 08:52 PM   #13 (permalink)
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Well guys it turns out im just F***ing retard. thats all. It works now.
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Old 10-06-2004, 09:42 PM   #14 (permalink)
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what fixed it?
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Old 10-07-2004, 02:10 AM   #15 (permalink)
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my money is on HU setting.
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