Originally Posted by Martycool007
Hey guys, I finally got around to hooking up my Behringer EP4000 to the passive MFW-15 that I am using for my ht. problem is that the sub barely puts out any bass, and the yellow lights labeled "Sig" keep flashing even with the gain turned all the way down. Another problem seems to be that the sub is now humming really loud. I have tried adjusting the subwoofer output of my Denon AVR-3312 down to -5db and at +5db. Either way, I still get very little bass and the "Sig"lights keep coming on. I currently do not have an SPL meter, all I have is a Behringer ECM-8000 mic and an iPad.
My questions are:
1. Can anyone tell me what the mode switches 1-10 on the back are for and what they should be set to?
2. How should i set the subwoofer level on my Denon AVR-3312?
3. What should I have the gain set to?
4. Would it be best to bridge the amp to power my single passive MFW-15?
5. How do I bridge it?
I really hope that someone out there can help me with this. Thanks in advanced for your time and effort!
1. Already stated.(See Manual)
2. The Sig light means its getting signal. The red light means your clipping the amp.
3. You have waay more amp than you need for the MFW. You might actually do damage to the woofer, especially since you don't have a high pass.
4. If you bridge the amp you will likely destroy the stock MFW driver
5. In the manual, but I strongly discourage this.
Your issue with no bass is likely two fold. a signal issue and your dip switches are wrong. I'd diesable the highpass function and limiters on the EP4000 if it were me. If you have a multimeter you can check your sub cable output voltage. The EP4000 needs approx 2Volts to deliver full power. If your not seeing the red light on the berry you don't need more power, you need more signal to the amp.