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Author Topic: Which magnetic preamplifier? Lionel Fouillen Expert Film Handler Posts: 230 From: Belgium Registered: Nov 2002 posted 06-25-2003 03:36 AM                     I don't think Dolby still manufacture the magnetic preamplifier that was usually associated with the CP200 in the past. So which modern preamplifier would you recommand for a new installation to re-run 70mm prints from the 1980's in Dolby format #42 ? Thanks.  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 06-25-2003 08:25 AM                     Dolby does not make the MPU-1 anymore but it does still make the Cat. 92C that goes into it so if you have the MPU then you can load it up with preamps. Panastereo has their MP64 that will handle up to 2-proj of 35 and 70mm magnetic in a 1-U frame. http://www.panalogic.com/products/MP64.html Give that one a look-see. Steve  |  IP: Logged Lionel Fouillen Expert Film Handler Posts: 230 From: Belgium Registered: Nov 2002 posted 06-25-2003 01:56 PM                     Thanks Steve  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 06-26-2003 10:02 AM                     Smart still has the 435 mag preamp available and I thinK USL could probably come up with some as well Plus there are tons of DOLBY MPU kicking around as well  |  IP: Logged Jean-Michel Grin Expert Film Handler Posts: 222 From: Geneva & Lausanne, Switzerland Registered: Jul 2002 posted 06-26-2003 06:50 PM                        Hello Lionel, If You are searching for a Dolby Magnetic preamplifier, just send me an E-mail (In French) I believe that my boss have one for sale. Just write me if You're interested and I can ask to him. Best regards,  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 06-26-2003 09:28 PM                     The SMART SM435 is no longer on the price sheets and I wouldnt' consider it if it was...I NEVER liked them. Steve  |  IP: Logged Frank Angel Film God Posts: 5305 From: Brooklyn NY USA Registered: Dec 1999 posted 06-28-2003 05:25 PM                        Steve, What's the problem with the Smarts? For quite awhile we used Inovonics modules that were actually designed to replace the tube preamps in audio reel-to-reel tape decks (Ampex and Sculleys), but we had a rough time matching them to the old Altec 4trk mag head clusters. Without transformers between the heads and the inputs, you needed so much gain that even turning on the rewind motor in the next room would induce hum. Matching xformers helped, but unless you are prepaired to spend big bucks on really high quality shielded transformers, you wound up with very tinny, bass starved sound which is what we got. Nontheless, the Inovonics preamps were very nice 2u rack mounts that featured gap compensation for each head and three equilization presets that you could select from the front panels of each preamp by pushbuttons (if you dared push any of them while the outputs were live because of the humungous thud that they would cause in the theatre). Those buttons could also be used as a pratical stress test for your subwoofers.  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 06-28-2003 06:21 PM                     Frank, I never liked the response from them...its been awhile but there might have been a noise issue as well. Compared to the Dolby MPU-1 with Cat 92s...it just didn't compare. Steve  |  IP: Logged

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