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In Reply to: Having spent a bunch of time in an Orchestra Pit..... posted by tubesforever on September 12, 2006 at 10:33:10:
FWIW, Rel uses 10" drivers exclusively in their subs.
Follow Ups:
A 75 hz note and a 37 hz note are exactly how far apart? Probably one or two notes on the scale. Certainly well within the same half octave.REL uses extreme crossover circuitry to achieve their cut offs. My 75 hz second order passive filter has much higher dcr than RELS extremely complex active cross over circuit.
Adding the DCR of the coil to the Crossover point of the circuit is critical with second order crossovers. This is why my second order crossover sounds similar to the more advanced REL circuitry.
Remember mine is all passive crossovers while REL uses active circuitry to accomplish their crossover.
Check their website.http://www.rel.net/index2.htm
The R-505 for example uses a 12" driver.
I should have stated the "ST" series which is their reference line.
speaker placement and room acoustics.My speakers and subwoofer aren't in the same full range class as some of the systems mentioned here but I have the high filter for the subwoofer set at 70dB (similar to what Tubes uses), which you point out, is higher than many people recommend. But with the inherent rolloff of my speaker's bass response (running full range) I find that the subwoofer fills in that weak spot in the frequency range. I may have gotten lucky but the overlap blends in quite well; ie, the subwoofer doesn't sound like a subwoofer and the bass doesn't have a "muddy" sound. Bass notes and drum beats are fairly well defined and appropriately located in the sound space.
I know that my speakers could be better. I'd like to someday have a set of full range speakers and subwoofers with very tight bass. But for what I paid for the speakers and subwoofer it sounds pretty darn good.
Tom
I'm doing more-or-less the same thing with a Hsu STF-2 crossed over at ~ 80Hz and a pair of Axiom M22ti rolling off naturally. I'm splitting the signal at the line level and driving the Axioms with a highly modified Dynaco ST35. While not up to the standards of some systems (for example, Tannoy Autographs) in terms of bass extension and weight, it does pretty damn well on organ music and bowed double-bass.Besides, my wife won't allow big-ass corner horns. :-)
-Derek
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