This is topic Current IMAX speakers in forum Large Format Forum at Film-Tech Forum ARCHIVE.
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Posted by Paul Trimboli (Member # 1509) on 11-24-2008, 04:28 AM:
I have found some photos of a new install of an IMAX theatre (which looks to be in a multiplex so not a traditional theatre) and I noticed that the current speaker designs seems to have gone away from from the point source coaxial designs to a slightly more conventional layout. Is the reason for this cost? Could they have changed over to Linkwitz-Riley crossover (or were they using these already in their systems?) which take into account the non coincident drivers (and their off axis response) and so this offers more flexibility?
The speakers in question-
IMAX Speakers
I also found this video on youtube showing the new system installed in the Fort Worth museum and it shows what looks to be a 4 way system (watch at 0.35 in)
Fort Worth Sound System
What layout did the earlier IMAX speakers use? Do the 4 way IMAX systems still use bass management to send it to the sub stack?
Posted by Tristan Lane (Member # 1169) on 11-24-2008, 11:32 AM:
Adam has pictures of both GT and SR speaker systems. They are much more substantial than those little mini-speakers being installed on the screen you pictured.
The IMAX Basics thread has some pictures as well.
Posted by Ron Lacheur (Member # 1126) on 11-24-2008, 02:14 PM:
IMAX could be contracting out Speaker designs/setups. I read awhile back that an IMAX dome theater was installing the latest version of Tom Danley's speaker system ( SH-96 ).
Posted by Mike Olpin (Member # 1115) on 11-24-2008, 11:46 PM:
Those are MPX speakers. They look small, but just wait until you turn them on. Those suckers move a lot of air.
Posted by Dick Vaughan (Member # 540) on 11-25-2008, 05:43 PM:
there are a number of older theatres where the sound systems were supplied by companies other than IMAX. This was the case with our original sound system in Bradford in 1983.
Several of these theatres are now upgrading their systems. Media Merge from Alabama have been involved in a number of these.
Posted by Tristan Lane (Member # 1169) on 11-25-2008, 10:42 PM:
Spokane's Riverfront Park IMAX was outfitted with a 3rd party sound system. The crown amps and Oxmoor EQ units were present, but a Allen & Heath mixing board and JBL speakers were used. They were using a DTS-6D SV supplied the audio on all new prints. 6 track mag was used on older prints. They updated to a newer playback system recently. It's not a DDP II, but something newer. They do not use a DTAC system.
Posted by Jim Patriarca (Member # 5035) on 12-17-2008, 04:17 PM:
We have upgraded to the Danley speakers and LabGruppen amps.
Posted by Louis Bornwasser (Member # 3063) on 02-04-2009, 01:49 PM:
IMAX, Munich always had larger amps and JBL speakers. Louis
Posted by System Notices (Member # 2357) on 06-12-2011, 01:20 AM:
It has been 857 days since the last post.
Posted by Fenix Huang (Member # 6313) on 06-12-2011, 01:20 AM:
Hii Paul Trimboli,
I have seen your link. I compared the drawing from Kanga IMAX project that delivers 24,000watts etc etc to the existing speakers for IMAX 1570 screen
They look almost identical. you know, hand made here and there, JBL Pro fitted, etc etc.
the Fort Worth installation looks exactly that of Kanga installed in Canada
Plus the company who first built Kanga prototype = original builder for IMAX speakers from Sonics. The company behind Kanga, used to be employed with Sonics Alabama.
Hemmm ... actually dunno if the final products end up being different altogether.
I have an image here to look at
If the powersubs are stacked to 8-10 (similar to omniMAX Singapore), and add extra Speaker Clusters on each rear, then the total will be beyond 24,000 watts
no ?
[ 06-12-2011, 02:39 AM: Message edited by: Adam Martin ]