Originally Posted by jbarteli
Ok, just got my first impressions.
it is a bit underwhelming? Maybe I was already spoiled with my Rythmik at VNF? I have set the behringer volume at 80% and the red limit sometimes goes on, the BOSS has trouble to add something to the Rythmik. Am I doing something wrong?
jbarteli.....Thanks for the details. Given everything you checked already, it sounds like it's a power or signal problem. Your design, build and resulting BOSS platform all look great.....I presume you have the 6 isolators underneath the platform like shown in your original drawing.
Your BOSS should deliver ample TR when powered properly. It seems like it's not getting enough power or perhaps one or more of the drivers isn't wired properly or out of phase.
To check the wiring, verify all 3 woofers are moving during your listening sessions. If any one of them isn't moving, check your wiring to that driver to make sure it's correct.
To check for phase, use a 9V battery and connect it's positive terminal to the positive speaker wire of the BOSS platform and then touch the negative terminal to the negative speaker wire of the BOSS platform. While touching the speaker wire to the negative terminal, observe each driver and whether it moves in or out. Observe every driver as you're touching the speaker wire to the negative terminal of the battery. They all should move the same direction. If you find 1 that is moving the opposite of the others, that means that one driver is wired out of phase.
If the wiring and phase all check out, then it's a power problem.
I'd suggest bypassing all the filters and power limit settings on the Behringer and just run your sub-out from your AVR directly into the Behringer. Set the LPF for the LFE in your AVR to 80Hz. This will ensure you're getting a full bandwidth signal into the Behringer.
Bypassing the Behringer DSP like this will ensure the signal will get amplified without any filters.
Set the gain on the Behringer at half-way and start listening to your favorite bass demo material that you're very familiar with. Listening at your normal main volume setting, slowly start increasing the gain on the Behringer until you start to feel lots of TR. The woofers will also start moving violently as you increase the gain on the Behringer. As you're increasing the Behringer gain, listen for any abnormal banging sounds during heavy bass activity during the demo scene. If you hear any abnormal sounds, back the gain down slightly and listen to that scene again. If you don't hear any unusual sounds, then try another one of your favorite bass demo scenes and listen to it for any unusual sounds. If there's unusual sounds with that bass demo scene, then back the gain down again slightly and listen again.
That should complete your initial BOSS setup and give you a good idea what it's capable of doing. After that, it's just a matter of experimenting with different settings in the Behringer to see what improvements each setting make while listening to your favorite demo material.
Let us know if any other questions come up as you're checking everything.
Hope this helps.