So I figured "I've got the gear, why not biamp it?" I did and didn't get the outcome I was expecting. Here's the rig... G&L L-5500 through a Markbass Super Booster into a Peavey Tour 450. Speaker out of the Peavey into an SWR Triad Cab. Tuner out of the Peavey into a Dean Markley RM100 one hundred watt tube power amp into an SVT 118e cab. I know the system isn't truly a biamp system since I'm not splitting the signal and sending the highs and lows to different amps. The idea was to use the Peavey as a full-range system and to push a hundred tube watts into the 18 to dial in massive bottom when I wanted it. Actually, the Peavey/Triad portion of the system sounds great. The problem is the volume of the Dean Markley. Even on 10 the volume is so low that it's like it's not on when I turn up the Peavey to normal practice levels. I'm wondering if it's the level of the signal going into the Dean Markley. I tried sending to DM's line in from the Peavey's FX send but got silence. Only the tuner out worked at all though the volume is way too low. What am I doing wrong. What do I need to do to fix it?