My MTX TA3404 goes into Protection Mode but only at high volume? The amp is 50X4 @ 4ohms and I am running Infinity Kappas on the doors and rear deck which have an impedance of 2ohms. The amp kit is an EFX 4 Gauge OFC with a 120A fuse. Between both my 4ch and Mono amp I'm drawing 100A. Any ideas why my amp does this?
You have 2 ohm speakers on an amp only stable down to 4 ohms and its going into protection mode? You just answers your own question.
(tabs) wrote:z yaaaa wrote:its not much fun trying to argue with a wall.
oh, trust us, we know
JLAudioCavalier wrote:You have 2 ohm speakers on an amp only stable down to 4 ohms and its going into protection mode? You just answers your own question.
Let me be more thorough
RMS Power @ 4 ohms 50 watts x 4 channels [
RMS Power @ 2 ohms 100 watts x 4 channels
RMS Power @ 1 ohm Not Stable
Bridged RMS Power 200 watts x 2 channels
Amplifier Specifications Amplifier Class AB
Number of Channels 4 Total
RMS Power Output 400 watts
Minimum Impedance Unbridged 2 ohms
Minimum Impedance Bridged 4 ohms
THD at Rated RMS Power 0.25%
Speaker Level Inputs Yes Preamp Outputs 1 pair
The reason I am running it @ 2ohms is because the Infinity Kappas have a 2ohm voice coil.
Ok, well that clarifies that. It's stable to 2 ohms. You have your gain too high would be my guess. You crank the volume, signal clips because you're asking too much of the amp, it goes into protect.
(tabs) wrote:z yaaaa wrote:its not much fun trying to argue with a wall.
oh, trust us, we know
How is your ground? Clean and flush against bare metal?
Can you give some insight as to how you tuned the amp?
bradsk88 wrote:How is your ground? Clean and flush against bare metal?
Can you give some insight as to how you tuned the amp?
I grounded the amp on a bolt that holds up the section that folds down on the rear seat, it is then split in 2 with a distribution block for each amp. The amp I tuned it by turning the gain all the way down then I chose a song that had a pretty good dynamic range, turned the volume up and turned the gain up until it slightly distorted then turned it down until there was no distortion. The crossover is set at High Pass and the gains are about half way up only.
Seat bolts are usually a bad idea. Go to bare metal and see what happens.
bradsk88 wrote:Seat bolts are usually a bad idea. Go to bare metal and see what happens.
I will try that, would the main fuse be an issue with it being 120A considering that the total draw of the amps is only 100A
That fuse is there to protect the wire and nothing else. The fuse blows so the wire doesn't burn up if you draw more load than the wire cab handle. That fuse has nothing to do with your issue
(tabs) wrote:z yaaaa wrote:its not much fun trying to argue with a wall.
oh, trust us, we know
JLAudioCavalier wrote:That fuse is there to protect the wire and nothing else. The fuse blows so the wire doesn't burn up if you draw more load than the wire cab handle. That fuse has nothing to do with your issue
Cool I thought maybe the fuse rating meant more current would go through. The Ecotec alternator is rated @ 105A either way.
Lots of good advice in this thread. I'm +1 to re-ground and turn down your gains.
I bet the gain is to high or you ground is crappy. I vote both....
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Well it turned out that my gain was too high even though it was only 1/2 way up. I set it to about 1/4 and now my Infinity Kappas sing like a mo fo
