amp shut off

Reply Subscribe

Thread Tools

Search this Thread

12-13-2007, 06:16 PM

kajenius

0 Watt CAFz'r

Thread Starter

Join Date: May 2007

Posts: 40

amp shut off

Hi there i have an mtx 4 channel amp that was working fine a few days ago.. Few days ago i crank up the volume it would play for a bit and go into protect mode n come back and go back in and so on n so on.. But at low volumes it works fine. What can this problem b?.
thanks

12-13-2007, 06:57 PM

92zed34

500 Watt CAFz'r

iTrader: (4)

Join Date: Dec 2004

Posts: 813

The symtoms fit with shorting out speaker leads. I would look into that first,

12-13-2007, 08:07 PM

JohnVroom

Yankee

Join Date: Oct 2003

Posts: 3,599

If it is a protection (you saw the protection light come on?) it sounds like thermal protection

12-13-2007, 08:17 PM

MTT

--SPECIAL ED--

iTrader: (17)

Join Date: Jul 2006

Posts: 1,325

Quote:

Originally Posted by JohnVroom

If it is a protection (you saw the protection light come on?) it sounds like thermal protection

my vote as well...check to make sure the load your amp is seeing isn't lower than the amps capabilities, also if your gains are too high and you're clipping the shiznit out of it, it can go into protect. does it have airflow around it?....

12-13-2007, 08:25 PM

kajenius

0 Watt CAFz'r

Thread Starter

Join Date: May 2007

Posts: 40

sorry about that.. i just checked it, and its the thermal light..the sub is in the trunk.. soo im guessing it got enough room to breathe. But i dont knoe why it started outta no where, it was working fine... thanks for all the responds.. a

12-14-2007, 05:23 AM

JohnVroom

Yankee

Join Date: Oct 2003

Posts: 3,599

OK too much heat, so the nex set of questions;

are all heat transfer surfaces free from obstruction
are you running a low impedance
hows your system voltage**

12-14-2007, 08:05 AM

kajenius

0 Watt CAFz'r

Thread Starter

Join Date: May 2007

Posts: 40

all the speaker are 4ohm i rain it individiually.. so im guessing it running 4ohmx4

12-17-2007, 02:18 PM

The Wizard

50 Watt CAFz'r

iTrader: (2)

Join Date: Nov 2007

Posts: 285

Quote:

Originally Posted by kajenius

all the speaker are 4ohm i rain it individiually.. so im guessing it running 4ohmx4

Can you explain in better detail how you wired the subs at the amp?

Last edited by The Wizard; 12-17-2007 at 02:23 PM.

12-17-2007, 02:25 PM

MTT

--SPECIAL ED--

iTrader: (17)

Join Date: Jul 2006

Posts: 1,325

Quote:

Originally Posted by The Wizard

Based on the fact that you ran 4 sets of wires individually (wired them in parallel), that would make it a 1ohm load not a 4ohm load, and that my friend is your problem. Your amp is more than likely NOT 1ohm stable. Wire it for a 2ohm load and you will be OK. Edited to add: "fix this before you cook your amp".

It's a 4 channel amp, if the speakers are 4Ohm then each channel is showing 4Ohm, this isn't a mono amp.

Try turning your gains down, even a little too low and see if you can reproduce the thermal shutdown.

and x2 on checking the system voltage

12-17-2007, 02:37 PM

#10

The Wizard

50 Watt CAFz'r

iTrader: (2)

Join Date: Nov 2007

Posts: 285

Oops, guess thats what I get for surfing the web while at work, reading half of the post and trying to sneak in replies. I missed the 4 channel part of the post.

Reply Share

First
Prev
1 / 2
Next
Last