So I hooked up my 100.4. I'm running 4 10 inch RE re's. I ran the subout rcas to the channels 1 and 2 and then ran 3 and 4 off the line outs. I'm using a dmm to tune the amp so I first put the 80hz 0db tone on at a low volume to set my low pass. speakers not hooked up and get all the way down. i stuck the dmm into the pos and neg of the channels 1 and 2 as if bridged. I got a reading of like .725V AC max and turned the low pass knob down until it started to change and figured that must be set at 80hz then. next I read each channel just to compare. they were .36 and .349V. That's fine. I then went on to do channels 3 and 4. It said like .2 something and so I thought the low pass was just at like 40hz or something... but it was still at as high of a frequency as it goes. Thats when I tried testing channel 3 and 4 separately and noticed that channel 3 was at like .2 somehting and the fourth channel was at like .03V. So the 4th channel isn't doing anything. Have you ever heard of this happening with this amp before? I hope I just overlooked something but I don't think I did. BTW, I tried switching the RCAs that went from the line out to the 3 and 4 to see if one of them was bad and it was still channel 4 that was messed up so that's not it. Any ideas? Thanks.

So I hooked up my 100.4. I'm running 4 10 inch RE re's. I ran the subout rcas to the channels 1 and 2 and then ran 3 and 4 off the line outs. I'm using a dmm to tune the amp so I first put the 80hz 0db tone on at a low volume to set my low pass. speakers not hooked up and get all the way down. i stuck the dmm into the pos and neg of the channels 1 and 2 as if bridged. I got a reading of like .725V AC max and turned the low pass knob down until it started to change and figured that must be set at 80hz then. next I read each channel just to compare. they were .36 and .349V. That's fine. I then went on to do channels 3 and 4. It said like .2 something and so I thought the low pass was just at like 40hz or something... but it was still at as high of a frequency as it goes. Thats when I tried testing channel 3 and 4 separately and noticed that channel 3 was at like .2 somehting and the fourth channel was at like .03V. So the 4th channel isn't doing anything. Have you ever heard of this happening with this amp before? I hope I just overlooked something but I don't think I did. BTW, I tried switching the RCAs that went from the line out to the 3 and 4 to see if one of them was bad and it was still channel 4 that was messed up so that's not it. Any ideas? Thanks.

have you tryed just putting the rcas only into channels 3 and 4

Did the 100.4 work before or is this a new amplifier ?

Can you tell me which revision it is ?

The bottom will say either "SAX-100.4" or "SAX-100.4b" or "SAX-100.4c"

Did the 100.4 work before or is this a new amplifier ?

Can you tell me which revision it is ?

The bottom will say either "SAX-100.4" or "SAX-100.4b" or "SAX-100.4c"

I bought the amp January 5th 2007 but didn't get to install it until a couple days ago. So it is like it was new, having never been installed. It's the SAX 100.4. I bought it during the presale. I hooked the RCA up directly to the 4th channel input and there was still no output on the 4th channel speaker outs.

Did the 100.4 work before or is this a new amplifier ?

Can you tell me which revision it is ?

The bottom will say either "SAX-100.4" or "SAX-100.4b" or "SAX-100.4c"

I bought the amp January 5th 2007 but didn't get to install it until a couple days ago. So it is like it was new, having never been installed. It's the SAX 100.4. I bought it during the presale. I hooked the RCA up directly to the 4th channel input and there was still no output on the 4th channel speaker outs.

So, it just says "SAX-100.4" on the bottom with no small letter afterwards ?

That is the first one in the first revision I've heard of with a bad channel - but it is possible.

E-Mail me at [email protected] for information about warranty.

Did the 100.4 work before or is this a new amplifier ?

Can you tell me which revision it is ?

The bottom will say either "SAX-100.4" or "SAX-100.4b" or "SAX-100.4c"

I bought the amp January 5th 2007 but didn't get to install it until a couple days ago. So it is like it was new, having never been installed. It's the SAX 100.4. I bought it during the presale. I hooked the RCA up directly to the 4th channel input and there was still no output on the 4th channel speaker outs.

So, it just says "SAX-100.4" on the bottom with no small letter afterwards ?

That is the first one in the first revision I've heard of with a bad channel - but it is possible.

E-Mail me at [email protected] for information about warranty.

Correct, no letters after the 100.4. I sent you an e-mail. Just let me know what I need to do. Thanks, I appreciate it.

Replied to your e-mail.