Originally Posted by mtg90
If you are using external amps with DSP built in like the iNuke DSP or an external DSP before the amps to split the preout signal between the speakers and MBM's then that will work correctly as it allows you to adjust delay and crossover slopes of both the MBM and main speakers independently.
When powering the speakers by the AVR's internal amplification and running the L/C/R preout to the amps for the MBM's you are only able to adjust delay and crossover on the MBM's (assuming you are using some kind of DSP in the MBM amp or external before the MBM amp). That is where the issues arises because you often need delay on the highpass side of a crossover to get things to integrate correctly (in this case the speakers where you are unable to do any of those functions).
Ok, so not that crazy considering what gets thrown around here but have a question about my setup
LCR = fusion 8s, SL/SR = volt 6. Currently two JL w7s that just aren't cutting it, simply too small to keep up
Denon 2310ci, multi channel in, no preouts
computer with equalizer APO currently HDMI to receiver
computer via USB to u-dac8
SL/SR to denon via multi in, denon powers them
L+R to miniDSP 2x4, cross over at 250hz (as suggested by @tuxedocivic
), HP L and R to multi in, denon powers 250hz+ on fusion 8s, LP L and R to individual mono block icepower amps for MBM
C to another miniDSP 2x4, cross over at 250hz, HP C to multi in, denon powers 250+ on fusion 8, LP C to individual mono block icepower amp for MBM
SUB (.1) would get added to LCR via equalizer APO
3xMBM Flex 12s tuned to 17/24, each sitting below their respective L C R fusion 8s
Denon essentially in pure mode as all processing done prior to
net new purchases based on what i have
: 1x minidsp u-dac8, 2x minidsp 2x4 (~430, about what it would cost me to get a receiver that even has preouts, still would be plagued by some of the issues above) ninja edit: oh, and of course some mbm 12s and wood for boxes. flat packs are too tall, only have 23.5" below screen, would keep same depth as flex 12 for the port considerations, just add in additional volume to the width
Please poke holes + additional questions below
have i done too much to avoid some of the pitfalls from above? I have attempted to cut off the time delay issues mentioned above
will the flex 12s make it up to 250hz?
SL\SR below 80hz (when the volts roll off) would essentially be lost, i doubt there is much down there that i need?
do i still really need a sub for 15-30, or will room gain + having used 3xMBM be enough bass. not a super bass head, but want something that can reach deep when called upon
thanks for taking the time!