silver_V179GNA
Member
Registered: 1st Jun 04
Location: Darlington
User status: Offline
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hi guys right in my old car i had 2 subs in, but my new car i decided to just use the one.. but it doesnt seem to be as loud and bassy as it should :S seems like its abit distorted doesnt seem to be playin the low notes!! any help appricaited 
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Mo
Member
Registered: 29th Jan 03
Location: Bolton, Drives Q3 S-line +
User status: Offline
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how many amps and what channels on the amp. have u set the amp that the sub is connected to on low pass?
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silver_V179GNA
Member
Registered: 1st Jun 04
Location: Darlington
User status: Offline
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1 amp 2channel running 1 sub. and thats something i will check...  thanks
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rocafella
Member
Registered: 10th Nov 03
Location: Aberdeen, Scotland Drives: Civic Jordan
User status: Offline
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Have you got the stats for the sub and amp at hand mate? You also bridged your two channels? Sounds like your sub isnt getting the power it requires, might want to check your gain isnt turned down (-) either
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silver_V179GNA
Member
Registered: 1st Jun 04
Location: Darlington
User status: Offline
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reet well its on low pass.. i dont know which is the gain  ... and i have bridged the connections... sub is 300w rms jl audio the amp is 600w i think this is max...
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b4l
Member
Registered: 7th Feb 06
User status: Offline
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obviously its going to sound alot less bassy because your only using 1 sub
whereas you used to use 2
if you want more add the other one
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AaronHorn
Member
Registered: 30th Jun 06
User status: Offline
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Sounds like you are adding too much gain on the amp, idealy at the amp stage you want to be adding no gain to the signal, ie 0dB. Check the manual specifications to see which voltage input (from the HU) it needs and adjust your head unit accordingly. It's best to send more output from the head unit.
Also are you sending a 'full-range' signal (ie. all components of the sound bass->trebble), if you are you need to ensure your amp has a low-cut feature so you lop everything above 160Hz off say. Beaware of bass extenders and stuff, turn all eq off, ie bass at 0, no bass expanders etc.
Find out the rms of your amp at the right ohmage. Idealy if your sub is 300RMS you could do with 300+W RMS power, a 600W MAX amp prolly wount cut it, bridged or not. Simply boosting the gain will just distort the sound. Set the HU power up loud but so it isn't distorting in the speakers then bring up the sub level untill it distorts, then knock it down a little... If it's not very loud then you need a better amp.
Final point it to test with a good (shop-brought) CD as MP3s have their own distortion going on, and it's easier if you have less problems to start with. Music you know will help you too.
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