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Very little sound from sub?
- Thread starter abound
- Start date
clio 182
have you turned the subs up?? silly question but the firsts subs i ever bought i fitted them etc & sound was very quiet took it to sextons they had the car for about 3mins when the guy came up to me and said 'subs where turned down mate' felt like such a tw@. Either that or you battery isnt powering the subs?? take it to a sound shop mate theyl look at it for you wont take then 2mins.
Rite just re-read a bit of this thread, it wont be the earth because they wouldnt power if that was the case, let me get this rite when you put your ear close to the subs you can hear music very quietly and crappy but without bass??? what size cable are you using?? 4gauge or 8?? I have a 0g running my system but on a previous system 8 wasnt a powerfull enough wire to run the subs had to drop down to a 4g,
also what AUX cables are you using?? have you got them in the rite way as in input - output?? normally have to ends on them blue and red,
What out put are you subs/amps etc?
Rite just re-read a bit of this thread, it wont be the earth because they wouldnt power if that was the case, let me get this rite when you put your ear close to the subs you can hear music very quietly and crappy but without bass??? what size cable are you using?? 4gauge or 8?? I have a 0g running my system but on a previous system 8 wasnt a powerfull enough wire to run the subs had to drop down to a 4g,
also what AUX cables are you using?? have you got them in the rite way as in input - output?? normally have to ends on them blue and red,
What out put are you subs/amps etc?
Last edited:
53 Renault clio 1.2 16V
This get sorted?
Look, if your altering settings on the amp, ( ie; the gain/sensitivity control), & there is no difference in sub output, then you should be looking at the amplifiers input signal....
As stated previously a number of times;
1, Check your using the correct Pre-Outs on the Head Unit....
2, Check your using the correct In-Puts on the Amplifier....
3, If using a High/Low level converter or similar, ensure its not faulty....
4, Post up following info to help all that are trying to help you;
A, Make & Model of Head Unit
B, Make & Model of High/Low level converter, (if using one)....
C, Whether or not your using High level input plug on Amplifier via rear speaker wires....
As stated previously a number of times;
1, Check your using the correct Pre-Outs on the Head Unit....
2, Check your using the correct In-Puts on the Amplifier....
3, If using a High/Low level converter or similar, ensure its not faulty....
4, Post up following info to help all that are trying to help you;
A, Make & Model of Head Unit
B, Make & Model of High/Low level converter, (if using one)....
C, Whether or not your using High level input plug on Amplifier via rear speaker wires....
clio II
hehe what a thread, sorry to hear bout the s**t you having mate...anyways have you got the sub setting on ur amp set at an appropriate frequency? ie: too low and you wont really hear s**t coming out of it, worth a check. good luck man 
The head unit is a JVC KD-G343, the pre-outs and inputs should be fine, I have the rca lead going from the back of the head unit into the amp. I am not using the high level input on the amp as I am only wanting bass so its just the low one I'm using. Yeh I tried messing about with the settings and frequencies, still no joy.
OK,
JVC are claiming a 2.5v Pre-Out....
Juice Amp settings;
Stereo/Mono switch----Mono, (if present on amp)
Filter Switch----Low Pass, (Choices, HPF, LPF, Flat or Off), select LPF
Crossover Point----Set at approx 80Hz
Gain/Sensitivity control----2.5v pre-out signal indicates 50% to 75% depending on Head Units 'safe' max volume, (see below)....
All the information you require for setting this up can be found by using the 'Search' function....
Search for threads started by me, it should appear at or near the top....
If you have a mate with a boot mounted amplifier that has through-puts or line outs then you could try these ran into your amplifier, all you would require is a 5mtr RCA lead....
JVC are claiming a 2.5v Pre-Out....
Juice Amp settings;
Stereo/Mono switch----Mono, (if present on amp)
Filter Switch----Low Pass, (Choices, HPF, LPF, Flat or Off), select LPF
Crossover Point----Set at approx 80Hz
Gain/Sensitivity control----2.5v pre-out signal indicates 50% to 75% depending on Head Units 'safe' max volume, (see below)....
All the information you require for setting this up can be found by using the 'Search' function....
Search for threads started by me, it should appear at or near the top....
If you have a mate with a boot mounted amplifier that has through-puts or line outs then you could try these ran into your amplifier, all you would require is a 5mtr RCA lead....
clio sport 172cup
are you sure youve got the sub on the right settings as in could be goin in instead of out which is wat gives you the tthump
Polo + Micra
a speaker cone moves up and down from rest to produce sound
think you might be confused with switching between 0 and 180 degree phase rotation
Ok, its now time to check the actual amplifier to sub wiring configuration....
The sub your using looks like a dual 4ohm voice coil sub, so can be configured to show either a 2ohm or 8ohm final impedance....
The Juice Amplifier your using is a 2ch Amplifier, it would appear to be a budget brand, (reads as, "cheap TAT" I'm afraid), which IMO wouldn't be 1ohm stable, which would imply it can't or shouldn't be bridged into less than 4ohm....
So, who fitted the sub in your enclosure ???
How are the coils configured, running one at 0 degrees & the other at 180 degrees would result in very little output & accelerated heat build up which would cause premature coil failure....
I would wire the sub at one coil per channel;
You could try it bridged into 2ohm;
You could try it bridged into 8ohm;
But if the coils are wired out of phase with each other then expect issues & possible damage;
Sub wired one coil per channel, (OUT OF PHASE);
8ohm bridged, coils out of phase;
REMEMBER, COILS OUT OF PHASE IS BAD
Double check.....
Laymans definition, Coil A is pushing, Coil B is pulling = very little cone movement, very little output, excessive heat build up in both coils.....
The sub your using looks like a dual 4ohm voice coil sub, so can be configured to show either a 2ohm or 8ohm final impedance....
The Juice Amplifier your using is a 2ch Amplifier, it would appear to be a budget brand, (reads as, "cheap TAT" I'm afraid), which IMO wouldn't be 1ohm stable, which would imply it can't or shouldn't be bridged into less than 4ohm....
So, who fitted the sub in your enclosure ???
How are the coils configured, running one at 0 degrees & the other at 180 degrees would result in very little output & accelerated heat build up which would cause premature coil failure....
I would wire the sub at one coil per channel;
You could try it bridged into 2ohm;
You could try it bridged into 8ohm;
But if the coils are wired out of phase with each other then expect issues & possible damage;
Sub wired one coil per channel, (OUT OF PHASE);
8ohm bridged, coils out of phase;
REMEMBER, COILS OUT OF PHASE IS BAD
Double check.....
Laymans definition, Coil A is pushing, Coil B is pulling = very little cone movement, very little output, excessive heat build up in both coils.....
Last edited:
Thanks for the reply man. I fitted the sub into the enclosure myself, there are two holes in the enclosure and wiring already fitted to the other side of the holes so I dont think I can do some of the ways suggested. Here is the way I done it, I dont know if its right or not but it sounded ok from my home stereo:
OK,
A picture paints a thousand words, if your sub is wired as your pic, (with one coil shorted out), then that needs to be sorted before you try it again....
The second terminals on each coil are simply to make wiring easier....So if you configure your coils like this, your running your coils in 'parallel' at 2ohm....
If your still getting no joy, the next step is either;
1, Try another known good amp in your car....or....
2, Try your amp in a mates car....
Starting to lean towards a goosed amp now to be honest....
A picture paints a thousand words, if your sub is wired as your pic, (with one coil shorted out), then that needs to be sorted before you try it again....
The second terminals on each coil are simply to make wiring easier....So if you configure your coils like this, your running your coils in 'parallel' at 2ohm....
If your still getting no joy, the next step is either;
1, Try another known good amp in your car....or....
2, Try your amp in a mates car....
Starting to lean towards a goosed amp now to be honest....
