[BC] Gates early solid state consoles

[dhultsman5@aol.com]

I cannot recall and have been meaning to see if I have schematics of the early version withe the 2N1414 and the later version with the 2N1307's.  Someone else has probably already checked this and know if it was just the transistors or were there bias and or circuitry changes.
 
May try to look that up this week if I get to stay home before leaving the NAB.  
Dave Hultsman
Birmingham, AL
Tel Toll Free (888) 822-1078
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-----Original Message-----
From: park at videopark.com
To: broadcast at radiolists.net
Sent: Sat, 7 Apr 2007 11:04 PM
Subject: Re: [BC] Gates early solid state consoles


Exactly right, Dave. I was referring to the line level signals. 
 
You said in a previous email, "As I recall Gates/Harris changed the input transistor for a 2N1414 to a 2N1307." Was that a drop-in or did it require a new circuit board? 
 
Thanks, 
 
C. Park Seward 
 
 
On Apr 7, 2007, at 8:20 PM, broadcast-request at radiolists.net wrote: 
 
> In the Diplomat I had a very early model with thre mike pre-amps, > the majority of the overload occurred right in the microphone [pre-> amp. Nothing up stream is going to get rid of the clipping right > in the pre-amps. I had three of them. As I recall the board was > rated with distortion specifications at a +24 dBm. The standard > output level was a +8dBm and a 10 dB isolation pad only gave you 6 > dB of head room. I have seen them pegged also but mainly with hi-> level signals from from turntables and cartridge machines. I > actually witnessed the clipping right in the early microphone pre-> amp stage. 
> 
> Dave 
 
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