Question about MTX 311D

Spazzbibi · 3rd November 2007, 07:48 AM

Good Day!

I was kinda hoping someone could answer my question for me...

Problem is that when i turn the volume up on my deck pass a certain point i start to lose my bass until the point that it's almost not out putting at all, when it does this the sub looks like it's just kinda floating around in the box with no real drive behind it,
So the first thing i did was try another sub on the amp but it worked fine, but then when i hooked mine back up it was still working fine on that one as well! well next day back to same problem so i just wires the sub to a friends 4501D and gave my MTX 10' 5500 a beating like it never got before! Didn't cut out at all, hot the 311D back up and same problem...... So i was wondering what could cause this and should i just buy a new amp?

Hmmmm just thought that i never tested my deck either..... New kenwood around 6 months old...

Thanks in advance for your help

oh and you can figure out that i'm no writer by the length on them sentences! lol

Spazz!

Spazzbibi · 3rd November 2007, 04:50 PM

I also noticed today that the red power light no longer comes on, also seems to have more bass then normal at lower volume... I think i see an Alpine in the future ...

Spazz

ppia600 · 5th November 2007, 12:37 AM

Don't give up yet.. there are several people here who might be able to help you figure it out if you can be patient.

Unfortunately, I'm not one of them.

Spazzbibi · 23rd November 2007, 07:50 AM

So i broke down and bought me an Alpine! Opened up my MTX at the dealer and couldn't find anything bad on it, Going to by a new multimeter and do some testing of my own from all the info I've be learning from reading on here!

Perry Babin · 23rd November 2007, 01:21 PM

I'm not familiar with the 311D. If no one else can help, post at least one decent photo of the guts so I can see if it looks familiar. It's probably similar to the 801D.

If you can take a high resolution photo of the internals, email it to me.

babin_perry@yahoo.com

Since you couldn't find any visible signs of damage, you'll have to be able to recreate the fault on the bench to troubleshoot the problem.

3rd November 2007, 07:48 AM	#1
Spazzbibi diyAudio Member Join Date: Nov 2007	Question about MTX 311D Good Day! I was kinda hoping someone could answer my question for me... Problem is that when i turn the volume up on my deck pass a certain point i start to lose my bass until the point that it's almost not out putting at all, when it does this the sub looks like it's just kinda floating around in the box with no real drive behind it, So the first thing i did was try another sub on the amp but it worked fine, but then when i hooked mine back up it was still working fine on that one as well! well next day back to same problem so i just wires the sub to a friends 4501D and gave my MTX 10' 5500 a beating like it never got before! Didn't cut out at all, hot the 311D back up and same problem...... So i was wondering what could cause this and should i just buy a new amp? Hmmmm just thought that i never tested my deck either..... New kenwood around 6 months old... Thanks in advance for your help oh and you can figure out that i'm no writer by the length on them sentences! lol Spazz!

5th November 2007, 12:37 AM	#3
ppia600 diyAudio Member Join Date: Jun 2007 Location: Louis y ana	Don't give up yet.. there are several people here who might be able to help you figure it out if you can be patient. Unfortunately, I'm not one of them. __________________ Don't worry... you can always turn the gain down!

23rd November 2007, 01:21 PM	#5
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	I'm not familiar with the 311D. If no one else can help, post at least one decent photo of the guts so I can see if it looks familiar. It's probably similar to the 801D. If you can take a high resolution photo of the internals, email it to me. babin_perry@yahoo.com Since you couldn't find any visible signs of damage, you'll have to be able to recreate the fault on the bench to troubleshoot the problem. __________________ 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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3rd November 2007, 04:50 PM	#2
Spazzbibi diyAudio Member Join Date: Nov 2007	I also noticed today that the red power light no longer comes on, also seems to have more bass then normal at lower volume... I think i see an Alpine in the future ... Spazz

23rd November 2007, 07:50 AM	#4
Spazzbibi diyAudio Member Join Date: Nov 2007	So i broke down and bought me an Alpine! Opened up my MTX at the dealer and couldn't find anything bad on it, Going to by a new multimeter and do some testing of my own from all the info I've be learning from reading on here!

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