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In Reply to: RE: I don't want or care about 18Hz posted by Bill Fitzmaurice on November 29, 2021 at 11:06:52
I'm not a big movie person, I do have some P.E. Bass Shakers, I've never used, probably won't. If I'm using say, LaScala's, I'd used powered subs to fill in below 50 Hz.
Follow Ups:
IMO if you don't extend response by an octave subs aren't worth having, and if you've got high sensitivity mains you need high sensitivity subs, which brings us back to horn loaded.
It's not that I'm a big movie person, but I've got 55 inches of TV on my wall, along with Amazon Prime and Netflix, so while I haven't watched a DVD in years I've got access to thousands of movies. Besides, when my TV is on so is my home theater system. Even the weather sounds better in 5.1. I've never heard my TV's internal speakers and don't ever plan to.
Why couldn't I just adjust the powered sub level to match the
horns, why would I need high sensitivity?.
If you're getting out of the LaScalas what they're capable of no direct radiator sub will keep up, unless it's so large that it might as well be a horn.
X 2, 6-8 cu. ft. BR using 15",would do fine up at normal listening levels.
I know the limitations, I'd be well within that.
Edits: 12/01/21
Hmmm I would say that depends on your room and your listening habits.
I use Peavey FH1 bass horns loaded with Eminence Kappa 15C, actively crossing to a pair of JM Lab / Focal Electra SW900 - a direct radiating subwoofer with 13inch driver in a "big" reflex enclosure, facing down - and to my ears, it does work, even tho a horn loaded sub would be better - there is just no way my second half would take the FH1 AND a huge horn sub in our living room. Two good normal subs are OK. Sometimes you can hear the subs being a tiny bit "slow" compared to the horns, but on most program material, it works fine and is certainly better than no subs at all (to me at least). Compromises, compromises...
and by 'keep up' you mean?
please clarify ...
with regards,
Dynamic tracking I call it. That as output rises the sub output matches that of the mains so there's no tonal change as volume increases. Back when I was a big time horny I used a pair of JBL Pro 4648s from the famous JBL tent sale to augment my Altec A5s below 100hz. With 6db of EQ at 30 hz and wall placement the JBLs were flat to 25hz and dynamically tracked the Altecs. The sound was robust.
Tom
Robust is putting it mildly! Back in the day you had a shoot out scheduled at your place with those JBL's, an Edgar Seismic and one of Tom Danley's Labhorns, which unfortunately you had to cancel for work. Your rig was the only direct radiator sub I've heard that can run with the big horn subs for extreme dynamics, with the exception of a neighbor's EV 30W heard many decades ago.
Paul
nice! so they 'kept up'?
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