mp04uz

Hey guys,

Alright, so I have a kenwood deck (50wattsX4), with 4.0v preouts going to my 4ch 1000watt amp (one set of rca's are for the rear speakers and the other set is my sub) My amp has been cutting out at high volumes and I was told it was due to the gain setting on the amp. I had it set to max. That's probably the problem, but now what do i set it to? In the manual for my deck it says the preout is 4.0v, and in my amp manual it says "input level - low level input" is adjustable between 200mV and 3.5V, so does it matter if its at max, because the preout is 4v? I really have no clue lol, so please let me know what my gain levels should be on my amp.
In case you're wondering the sub is on a bridged channel so 500watt max, duno rms, and the sub is rated 1200 max 600rms. The sub setup is 2ohm, and the amp is 2ohm stable. I don't know if any of that matters.

Thanks

Lspade69

iTrader: (2)

Are you sure that the amp is 2 ohm stable when it is bridged? What volumes do you run your head unit at continously?

I guess I have never heard of an amp that has a highest input of 3.5v. To me it makes sense that it would be turned all the way up but then again I have always heard 100% of the time that it is bad to have yer gains turned all the way "up".

Smoke_31

Double check your amplifier instructions. Most amps I have read up on are 4 ohm stable when bridged. As stated above, it does sound like it could be a gain setting issue. What amp are you running?

mp04uz

Well the amp I'm running is actually a pretty shitty name. Pyramid Power PB-612x 1000watt 4 ch.
* 4 x 250 Watts Total Output
* Tri-Way Configuration: 4/3/2 Channels
* Variable Gain Control/Remote Turn On/off
* Remote Turn On/Off/2 Ohm Stereo Stable
* MOSFET Pulse Modulated Power Supply
* 2 Ohm Stereo Stable
* Built-in Bass & Treble Control
* Gold Plated RCA Low Level Inputs
* Hi-Level Low Impedence Input/Speaker Output
* Signal to Noise Ratio: >90dB @ THD 0.04%
* Frequency Response: 15Hz-30kHz
* Overload/Short Circuit/Thermal Protection
* Dimensions: 13.78''W x 2.17''H x 8.35''D
That's it's description. Whether is's only 2ohm stable when it's bridged, I can't find anything that says it is or it isnt. But say it isnt 2ohm stable when it's bridged, but the subs are in a 2ohm config, what do I do?

TravisB

Thats your problem
2ohm stereo and 4ohm mono bridged put the same load on the amp. Either change the amp or the subs. Or Im assuming since you said subs you have 2 of them. Use one and bridge it in 4

Smoke_31

What kind of subs are you running? You might be able to rewire the subwoofers to a 4 ohm load. The only problem is that, depending on what subs you are running, your amp might not be large enough to power them. Since you say your subs are 600 w rms, you might need to purchase a new amp to run both subs. The amp you have right now will put out about 250 rms I THINK when its bridged at 4 ohms. If someone can tell him better, please do!

TravisB

What I would do if I were you is connect my 4 speakers to the 4 channel amp.
and connect the subwoofers to a 2ohm stable mono amp.. all mono amps ive seen to date are stable at a 2ohm load.

mp04uz

Hi again,

Thanks for all the help here guys. I appreciate it. As far as getting another amp, I probably won't be doing that for a while. I'm kinda low on cash being a student and all. But the subs still run, and run loud with the bridged connection, even if its not 2ohm stable. So I'll stick with that for a bit.

Thanks

Peace