[BC] Achieving good S/N

[Milton R. Holladay Jr.]

The one we had must have been exceptional, as it had no "normal" operating
flaws or even artifacts. It once had a problem that required a new 12AT7
every few days because it would go into expand mode (IIRC) and stay there
after the tube aged a little. This was corrected by replacing the 12meg
resistor in that circuit with 3.3 megs so that the normal infinitesimal
gassing of the tube would not cause this problem..............
M
----- Original Message ----- 
From: "Mark Durenberger" <Mark4 at durenberger.com>
To: "Broadcast Radio Mailing List" <broadcast at radiolists.net>
Sent: Monday, December 26, 2005 9:41 PM
Subject: Re: [BC] Achieving good S/N


> The Level Devil was a real piece of work.  It was an expander-compressor,
> and when a nominal signal level was present, it refrained from doing
damage
> in the pumping mode...but at that level it had a wonderful trait of
suddenly
> going into 10 db of expansion...full out...not proportional to signal.
>
> Mark Durenberger