Need some help.

wmiller1337 · 5th August 2011, 05:48 PM

I am trying to hook up a system in my wife's New Beetle. The HU is a brand new JVC, subs and amp are used Memphis Audio parts. Bought those from a family member, so I have heard them and know they worked when pulled (which has been awhile though).

Everything is wired up, the amp's green power LED comes on, aswell as the blue Memphis 'M', however the subs make very little sound, you have to be next to them to even tell. Now I have double checked the wires, tried another ground, tried new RCAs, tried another amp on these subs, tried this amp on other subs, tried other amp on other subs, all same results. The HU has a Sub on/off and I made sure its on. Played with all gains/ levels. Nothing is working though. Any ideas?

Perry Babin · 5th August 2011, 06:02 PM

Do you have another speaker that you can connect to it?

wmiller1337 · 5th August 2011, 06:12 PM

I have tried another pair of Xploders on it with the exact same response. Very small amount of bass and can just barely feel the woofer cone move... also tried the Xploders amp on my Memphis subs with same response.

Perry Babin · 5th August 2011, 06:22 PM

Try plugging the RCAs from one of the highs amps into the sub amp. Does that produce any output?

wmiller1337 · 5th August 2011, 06:24 PM

Mids are just HU amplified, but I did try running the RCAs out of the front and rear outputs on the HU with no noticible response from subs.

Perry Babin · 5th August 2011, 06:35 PM

Check the shield ground on the head unit.
RCA Shield Repair

wmiller1337 · 6th August 2011, 05:47 PM

Ok, well I didn't try the shield repair, but I tried the headphone to RCA on the mp3 player Nd still no output.

Perry Babin · 6th August 2011, 07:17 PM

Nd?

wmiller1337 · 6th August 2011, 08:40 PM

And. Typing on a phone.

Perry Babin · 6th August 2011, 09:01 PM

What's the exact model number of the amp?

5th August 2011, 05:48 PM	#1
wmiller1337 diyAudio Member Join Date: Aug 2011	Need some help. I am trying to hook up a system in my wife's New Beetle. The HU is a brand new JVC, subs and amp are used Memphis Audio parts. Bought those from a family member, so I have heard them and know they worked when pulled (which has been awhile though). Everything is wired up, the amp's green power LED comes on, aswell as the blue Memphis 'M', however the subs make very little sound, you have to be next to them to even tell. Now I have double checked the wires, tried another ground, tried new RCAs, tried another amp on these subs, tried this amp on other subs, tried other amp on other subs, all same results. The HU has a Sub on/off and I made sure its on. Played with all gains/ levels. Nothing is working though. Any ideas?

5th August 2011, 06:02 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Do you have another speaker that you can connect to it? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

5th August 2011, 06:22 PM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Try plugging the RCAs from one of the highs amps into the sub amp. Does that produce any output? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

5th August 2011, 06:35 PM	#6
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Check the shield ground on the head unit. RCA Shield Repair __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

6th August 2011, 07:17 PM	#8
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Nd? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links


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5th August 2011, 06:12 PM	#3
wmiller1337 diyAudio Member Join Date: Aug 2011	I have tried another pair of Xploders on it with the exact same response. Very small amount of bass and can just barely feel the woofer cone move... also tried the Xploders amp on my Memphis subs with same response.

5th August 2011, 06:24 PM	#5
wmiller1337 diyAudio Member Join Date: Aug 2011	Mids are just HU amplified, but I did try running the RCAs out of the front and rear outputs on the HU with no noticible response from subs.

6th August 2011, 05:47 PM	#7
wmiller1337 diyAudio Member Join Date: Aug 2011	Ok, well I didn't try the shield repair, but I tried the headphone to RCA on the mp3 player Nd still no output.

6th August 2011, 08:40 PM	#9
wmiller1337 diyAudio Member Join Date: Aug 2011	And. Typing on a phone.

6th August 2011, 09:01 PM	#10
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	What's the exact model number of the amp? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

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