My current LFE setup consist of 5 subwoofers and a Behringer DEQ2496 and DCX2496, now as some of you know the Behringer gear is Pro gear and the levels required to drive it properly are 12dB more than consumer gear.
In my hunt to get a quick fix to this problem I came across this great unit from Behringer it is the MX882, and should be able to be procured for less than $100.00 USD.
I feed the output of my Pre/Pro via unbalanced into 1 Ch of the MX then out to the analogue inputs of the DEQ2496, The DEQ & DCX are coupled via XLR using AES/EBU digital. The outputs of the DCX are routed via the MX to attenuate the levels prior to going to the subs.
Works an absolute treat...
I muted the outputs of the DCX, set the LFE on the pre/pro to 0. I set the Pre/Pro to ref level and ran the test tone. I adjusted the gain on the MX882 to just on clipping of the DEQ, and then I backed the gain off so that clipping did not occur at all.
Next I un-muted each output of the DCX, and attenuated each output of the MX882 to calibrate each sub. All outputs ended up set at the same level, I adjusted the output of the DEQ for fine tuning, as this allows for .1dB adjustments.
Pros:
- No audible hum from the power xformer.
- No thump when powered on.
- Pots are smooth with micro notches, very easy to match each other up for quick adjustment.
- Excellent range of adjustment from full attenuation to + 15dB.
- No audible coloration of the signal.
Cons:
- Small thump when unit is powered off, nothing to worry about, and no where as bad as the BFD.
- Split/Mix buttons are illuminated in mix mode only, and are a little on the bright side sitting in the rack, not over the top and if anything it is probably just their size.
This unit is being used as a set and forget item, for the price, and the fact that I can use balanced inputs and outputs, has meant I have a level matched and hum free subwoofer setup.
All interconnects between the Behringer units are via balanced XLR, and I also use XLR cables to all the subs.
I also realize there are other great units and kits on the market, but in my situation this was the best fit and neatest solution.
Dick
