Rear car speakers get too loud and distorted

[FrizeR]

Hey guys,
I got a Rockford P400-4 for the front speakers (Focal) and the subwoofer in the back.
In the rear I have JBL woofers connected to my head unit (JVC-kw-v21bt) that get way too noisy.
I tried messing with the Fader but it ruins the balance between the tweeters and the front woofers.


Is there any way to turn the rear speakers down a bit?
Thanks a lot.

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[huberoy123 10+ year member]

Have you tried experimenting with the loudness, speaker select, and equalizer settings? I have the KW-AV61BT unit and used a separate amplifier for the woofers.

 

[nauc 10+ year member]

list all gear, model number etc

 

[1aespinoza 10+ year member]

Hey guys,
I got a Rockford P400-4 for the front speakers (Focal) and the subwoofer in the back.
In the rear I have JBL woofers connected to my head unit (JVC-kw-v21bt) that get way too noisy.
I tried messing with the Fader but it ruins the balance between the tweeters and the front woofers.


Is there any way to turn the rear speakers down a bit?
Thanks a lot.

Turn the gain counter clockwise on the amp for the rear speakers. This will limit the signal that goes into rear channel amplification.

 

[ikpthegame 10+ year member]

Turn the gain counter clockwise on the amp for the rear speakers. This will limit the signal that goes into rear channel amplification.

Can you read? He clearly stated the fears are on the hu. I would play with the hpf on the hu, it should have a built in crossover.

 

[Louisiana_CRX 5,000+ posts]

Hey guys,
I got a Rockford P400-4 for the front speakers (Focal) and the subwoofer in the back.
In the rear I have JBL woofers connected to my head unit (JVC-kw-v21bt) that get way too noisy.
I tried messing with the Fader but it ruins the balance between the tweeters and the front woofers.


Is there any way to turn the rear speakers down a bit?
Thanks a lot.

Fade it a little more to the front... that's what I do

 

[BCotrell]

Define woofers? Like just midrange or midbass drivers or actual subwoofers? If you have a sub stage deal those rears all together

 

[1aespinoza 10+ year member]

Can you read? He clearly stated the fears are on the hu. I would play with the hpf on the hu, it should have a built in crossover.

Yes they are, but that four channel amp has separate gain controls for front and rear channels. If I read correctly, he is using front channels for front stage, and rear channels for subs. So if fading throws off the listening pleasure as he stated, then his best bet is to turn down the gain for the subs, which I understand are drowning out the front stage.

 

[1aespinoza 10+ year member]

Can you read? He clearly stated the fears are on the hu. I would play with the hpf on the hu, it should have a built in crossover.

Oh, I see now what you mean. What I understand is that he has subwoofer output connected from his radio to the amp's rear channels. So fading will not help because usually subs are not on the fade circuit.

 

[1aespinoza 10+ year member]

Wait... Cotrell is right. What do you mean by woofers. I never heard subs described as noisy. Loud, boomy, rattling, filling loosening yes,but not noisy. How is your set up connected?

 

[FrizeR]

Have you tried experimenting with the loudness, speaker select, and equalizer settings? I have the KW-AV61BT unit and used a separate amplifier for the woofers.

How can these settings help?

 

[FrizeR]

Wait... Cotrell is right. What do you mean by woofers. I never heard subs described as noisy. Loud, boomy, rattling, filling loosening yes,but not noisy. How is your set up connected?

Front components -> powered off the amp
Subwoofer -> powered off the amp
Back JBLs -> powered off the JVC head unit therefore being louder than they should be at normal volumes

 

[1aespinoza 10+ year member]

Front components -> powered off the amp
Subwoofer -> powered off the amp
Back JBLs -> powered off the JVC head unit therefore being louder than they should be at normal volumes

I see. It is odd that the head unit has more power than the amp. Try raising the gain on the front channels on the amp. If that does not work, try connecting the rear speakers to the amp's front channels as well. The amp is rated 4 or 2 ohms per channel, so there is no danger of straining the amp. Also, when you drop resistance(ohms), the amp usually doubles the output power. So lower the volume before starting.

 

[nauc 10+ year member]

ditch the rears, set your gains right. heres how. the test tones are at the bottom...

Amplifier Level Setting Guide

Note:The following article describes the Amplifier Level Setting process for most car audio amplifiers, regardless of brand. Specific target voltages for applicable JL Audio amplifiers are included...

jlaudio.zendesk.com

 

[BCotrell]

Jvc voltage can also be Inconsistent out the deck preouts and it could be the amp.

1. check voltage out front preouts and rear speaker inputs on hu.
2. check front speaker rca connections to ensure they’re good
3. Check voltage out the amp rca’s.
4. Ditch rears
5. Ditch rears