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In Reply to: RE: Seeking Advice - 20,1s, 3.7s, subs posted by Muggsy on December 15, 2016 at 08:54:30
I would say - as I've just done this ... add a pair of sealed subs! You also need an active XO so you can roll off the bass panels to match the subs' roll-off (to reduce distortion). Your room size determines whether a pair of 12 inchers will do ... or you really need 15" drivers. My room is 19' x 12' x 9' high; my 'sub guy' advised me - given my love of organ music - to choose 15" drivers (Dayton Ultimax in 150l sealed cabinets, powered by an 800w Hypex plate amp) ... and I am very glad he did! My organ music could not sound better. :-))
The only thing I would add is that the best marrying of subs to any speakers - but, I suspect, particularly panels - is to be able to use DSP to delay either the Maggies or the subs, to time-align them. In my case, a miniDSP unit provides the XO between bass panels and subs ... as well as the XOs between bass panels 7 mid panels, and mid panels & ribbons. (I run my Maggies 3-way active.) delay is just one of the things a miniDSP unit provides - as is EQ for troublesome room modes.
Andy
BTW, I know people who have 20.Xs who also have subs.
Regards,
Andy
Follow Ups:
I feel certain that which have posted is quite true, mainly that marrying subs to any speaker is quite advantageous. After first getting my Tympani IV-As, I went to my dealer telling him that I'd like to buy some subs for them. Jokingly he replied (more or less) 'what for your IV-As ARE subs'. Of course we know that's untrue, but I took to mean that I had more than enough bass energy in my listening room and didn't need speakers which could provide added, but even lower frequency bass information. Since he was willing to give up on this potential sale of subs, I dropped the matter and never returned to it.An audio buddy of mine had Tympani III-As plus a very tall sub, all installed and set-up by a prominent audio guru. Playing genres of music which interested us, I couldn't decide if they added very much. Naturally we compared the sound with subs on/off. I recall having to place my palm on the subs to make sure they were indeed playing.
(It comes to me now, said "guru" was Mel Schilling, http://www.xhifi.com/index.php?section=about&subsection=melbio)
Edits: 12/17/16
How about time delay if surrounded by four 20.Xs in a MC system or maybe even a Dolby Atmos set-up (5.1.4 or 7.1.4) ? There you might need to get some speakers up on the ceiling :-).
Its been posted here that listeners used Maggie DWM unit(s) to augment the bass of 20.X speakers
The Oz Maggie importer told me that DWMs are better for pressuring the room better at the same bass frequencies that 20.Xs go down to ... not for adding an octave downwards. (IE. multiple bass drivers located in different places in the room, smooth out the peaks.)For augmenting the bass response of the 20.Xs, Bill uses subs.
Andy
Edits: 12/16/16
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