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Old 19th August 2013, 12:44 PM   #11
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hi
is this one an earlier model or what?
cheers,
williams
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Old 19th August 2013, 01:36 PM   #12
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Quote:
Originally Posted by Williams Audio View Post
hi
is this one an earlier model or what?
Yes, the interface in your picture matches the ealier model CLS schematics posted by john65b in post #5.
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Old 19th August 2013, 02:49 PM   #13
tyu is online now tyu  United States
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Only one tranfourmer in the CLSI................the II.......IIz had two tranfourmers..........Heres a pic of a II setup like a IIz......an some cap an coil upgreads..........on off bias for the panels
thanks
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Old 20th August 2013, 12:30 AM   #14
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The Original CLS interface I had had the transformer on the outside, not the inside... Maybe I had a more recent Gen 1?
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Old 20th August 2013, 04:36 AM   #15
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hi,
thanks a lot, you are helping me very much with the CLS restoration project
i do have some questions,
what is the ratio of the audio transformer?
plitron has some similar audio transformer with a ratio of 1:70, is the correct one for the CLS? and what is the nominal high voltage?
cheers,
williams
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Old 20th August 2013, 12:31 PM   #16
tyu is online now tyu  United States
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Right john65b.............
funny thay put one inside.............then put one tranfourmer outside then thay went to two inside.............then two outside.......i would have thought thay would have got it the frist time............the tranfourms sound better out side!
An for the bias V........i was told buy Mr Jim Powers........ at one time CLS were at 4,5k........but then ML rolled them there panels down to 3.6k......an thats were thay are today..........
John65b may have put more bias on his re-worket CLS panels an thay worket fine.........right john??

plitron.............make some of the best Tranfourmers out there..........i have never used them....But there power tranys are in all my old Krell amps an pramps............
...........get rit of the Kimber wire that ML uses for the bias feed......
.Its not High V wire just becase it teflon dose not mean it for high V............the top end is rolled WAy off...with the Kimber.............get a good high V wire ............like for 10k are even higher................

I would like to know what other,s are using for the high V bias feed WIRE????......it can have a BIG on the sound.........
have fun

Last edited by tyu; 20th August 2013 at 12:35 PM.
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Old 20th August 2013, 12:55 PM   #17
john65b is online now john65b  United States
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I ran Acoustat Interfaces on my used CLS II panels and sound was very good - higher bias (~5kv) and better transformers than the CLS II I/F. Much better SPL and bass too.

My original CLS panels are being re-mylared...a project that keeps getting pushed back.

I think ML reduced bias for reliability reasons. I do not know if my higher bias would shorten life of my panels.
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Old 20th August 2013, 01:48 PM   #18
tyu is online now tyu  United States
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Well.............for me......the ESL Nut.....
i say make the panel work right...an sound it best..
Are get rit of it............hell life is to short.....
My 30 +years old Acoustat sound Great...but thats just ME!
Thanks john..........
Long live Acoustats
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Old 20th August 2013, 07:27 PM   #19
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hi all,
well well i do have Acoustat as well
model 3, i did a complete restoration and sounds very good
take a look !!

cheers,
williams
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Last edited by Williams Audio; 20th August 2013 at 07:29 PM.
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Old 21st August 2013, 05:15 PM   #20
tyu is online now tyu  United States
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Vary nice..............
after all the work i have done in 30years with Acoustats.........best sound is 3ea 9" panels Flat............
all the SoundLabs,Quad, ML,Apogee, Magnepans an even my old B&Ws...........all sound great.....BUT the Acoustas setup this way........sound best............. i can here all the others speakers....thay can All make part of the sound i here in the Acoustats........... but the Acoustats do it All...............Gofig............Git that bias up!...have fun
Long live Acoustats AN ML
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