B-A-R

Rohde & Schwarz U23 limiter: help!
« on: February 03, 2005, 02:04:48 PM »
Hey gang,

 Have a pair of these limiters that need love. Anyone have any doc's or Schematics?? Got them to power up. They pass audio in bypass and compress, but when switched to Limit, nothing....on compress they will grab a transient and go into DEEP gain reduction then release it over 5 or so seconds. They use a gang of tele EF804S's........heres a link to a pic:

http://www.bavodekker.com/u23.html

I started re-capping but am hessitant (dont want to damage any of those transformers!)

Any info appreciated!!

B :grin:


B-A-R

Rohde & Schwarz U23 limiter: help!
« Reply #1 on: February 03, 2005, 02:40:52 PM »
:roll:

(bitting nails!!)

Rohde & Schwarz U23 limiter: help!
« Reply #2 on: February 03, 2005, 02:42:56 PM »
I have those docs but I'll have to scan them  Wil

Wilebee

B-A-R

Rohde & Schwarz U23 limiter: help!
« Reply #3 on: February 03, 2005, 02:47:05 PM »
Aww great!!! Shoot me a PM if you get a chance to scan em, appreciate it!!Let me know if you're looking for anything! b

B-A-R

Rohde & Schwarz U23 limiter: help!
« Reply #4 on: July 09, 2007, 09:49:33 AM »
Good news!! Quick update!!

 Ended up having Martin Eich go through em and just got them home, WOW!! Some attack and release mods added and these things sound amazing. Anyone know about the VACUVOX mod and whos doing them>? Cant find any info....thnx!

norman_nomad

Rohde & Schwarz U23 limiter: help!
« Reply #5 on: July 11, 2007, 12:38:10 PM »
I've been trying to snag just one of those for awhile now and you have two!  :mad:

Have fun with 'em.  :green:

B-A-R

Rohde & Schwarz U23 limiter: help!
« Reply #6 on: July 11, 2007, 09:02:52 PM »
Yea, got lucky...but they needed a complete go-thru...Gene Holder sold them to me off of evilbay like 2 or 3 years ago and they are finally getting some action...Anyone know about this VACUVOX mod someones doing??

 There was one on ebay for a sec last month...the guy ended the auction early...said someone from the USA offered him $1000 for it and he thought that was a fair price... ;-)) lucky him!

 I will say they are very transparent right up until falling apart... they dont do that lush 670 'crush' they just crap out, but man they really add big fatness to a vocal or a whole mix.....

 Just a few observations in case anyone is temped to spend serious $$ on them..

Rob Flinn

Rohde & Schwarz U23 limiter: help!
« Reply #7 on: July 12, 2007, 08:02:20 PM »
Darius

I have on my bench at the moment a Siemens V274.  It is different to the the one that you have documentation on your site for !!   It works when connected the same way, but has no level control on the front & looks just different inside.   I was wondering if you had any other V274 stuff tha was n't on the site ??
regards Rob

ioaudio

Rohde & Schwarz U23 limiter: help!
« Reply #8 on: July 13, 2007, 10:23:59 AM »
rob,

there´s three different circuits of the v274 - i also have the version without the pot, v274 III.
it´s mentioned in the siemens v274 manual on kubarths site.

-max

Rob Flinn

Rohde & Schwarz U23 limiter: help!
« Reply #9 on: July 13, 2007, 10:43:38 AM »
Max thanks for that I'll look at the manual again !
regards Rob


 

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