Ebay very kindly supplied me with some vouchers recently that gave me 15% off of anything over £100 & up to a maximum of £100 reduction
This happened to cover six categorys & luckily for me one of them was "consumer electronics" So naturally i went looking about on the off chance that i might see something interesting & oh boy did i just...
Cutting a not too long story down to the bone i found a DSP device that is designed to be connected between a pre amp & subwoofer. This device feeds the sub with swept test tones & listens to the results & then modifies the output to the sub to get rid of room modes & tighten up the transient response. Or if you like it near as damn it gets rid of the room Now this is only suitable for active or if you like powered subwoofers which operate below 150Hz.
It can't be used with a standard pair of passive speakers, though it could be used with a passive sub if you found a suitable power amplifier or plate amp if building your own...
Introducing the Antimode 8033c Subwoofer EQ...
Now while i haven't installed the pair of them yet (yes Mark needs two of them with two active bass units) i have absolutely no doubt that these are going to make a real difference to proceedings. These things do not boost output at any frequency (though they have an overall 3Db of gain), they only cut & cut out room boom by EQing in the digital domain where a lot more can be done than with any analogue filter
As soon as i'm strong enough to change out the Behringer CX3400 for the pair of DCX2496 i'll install these as well & see what they do, they should eliminate the room mode i have at about 40Hz & tighten things up nicely
Here are few reviews just incase you are interested..
http://www.hometheatershack.com/foru...de-8033-a.html
http://www.avforums.com/reviews/DSPe...EQ-Review.html
Oh, cheers ebay for saving me over £64