Rob Flinn

neve 2254/33609
« Reply #20 on: June 27, 2007, 07:29:24 AM »
Tekay

Can you shed any light on the BAX13 diodes used in the release controls ?

Is it necessary to have high speed switching diodes in this position ?  What do you use here ??
regards Rob


Neve 2254A Scam - Wonderlandaudio - Pedro Rodriguez
« Reply #21 on: June 27, 2007, 11:29:46 AM »
Sorry to air this out in this form.  I just want you all to be aware of Wonderlandaudio and Pedro Rodriguez.  I know other who have bought from him and have not received product.  Just giving you a heads up if you are going to do business with him.  I just want my money back $2000 or the Neve 2254A which I purchased in good faith.
Again, Sorry to interrupt your discussion.

Tekay

neve 2254/33609
« Reply #22 on: June 27, 2007, 12:22:03 PM »
Rob!
1N4148 will work just fine! 1N4148 will also work for the gainelement but it's takes more of them to find matched pairs / matched quartets.
Thomas "TK" Kristiansson
----------------------------------
"The Sound Is In The Iron"
www.vintagedesign.se  www.tkaudio.se

clintrubber

neve 2254/33609
« Reply #23 on: June 27, 2007, 12:58:19 PM »
Quote from: "Tekay"
Rob!
1N4148 will work just fine! 1N4148 will also work for the gainelement but it's take more of them to find matched pairs / matched quartets.


As it seems another/older/pre-33609 drawing uses those BAT-types, right ?  OK, easy does it, everywhere 1N4148 (at least outside the bridge).

Still makes one wonder why the AMS-Neve-pdf uses 1N4148 everywhere except for one place, a BAT... (see other thread)

Tekay

neve 2254/33609
« Reply #24 on: June 29, 2007, 02:26:06 AM »
IIRC the BAT42 is a fast recovery diode used in the meter circuit.
Thomas "TK" Kristiansson
----------------------------------
"The Sound Is In The Iron"
www.vintagedesign.se  www.tkaudio.se

tomcat

neve 2254/33609
« Reply #25 on: June 29, 2007, 02:31:59 AM »
Can somebody kick this mrcal... troll out here?

Purusha

neve 2254/33609
« Reply #26 on: June 29, 2007, 04:35:16 AM »
Quote from: "tomcat"
Can somebody kick this mrcal... troll out here?


C'mon  :shock:
Regards as always, Purusha

Rob Flinn

neve 2254/33609
« Reply #27 on: June 29, 2007, 06:30:01 AM »
Quote from: "Tekay"
IIRC the BAT42 is a fast recovery diode used in the meter circuit.


The release circuit uses BAX13 not BATs.

I think it's because bats are out of the normal frequency range of human hearing !!  :wink:
regards Rob

Rob Flinn

neve 2254/33609
« Reply #28 on: June 29, 2007, 08:54:31 AM »
Next question:

The release switches both contain polarised components (2 diodes & tantalum cap).  Therefore there must be a right way to connect them to the motherboard.    Looking at the mother board there is a common connection which goes to both release switches, so which side of the switch should this connect to ???   I can't seem to find anything that tells me this ??  Anyone help here ?
regards Rob

Tekay

neve 2254/33609
« Reply #29 on: June 29, 2007, 09:53:03 AM »
The common point (voltage reference) is going to "D" at the recoveryswitches. If reversed Auto 1 & 2 won't work as it should.
Thomas "TK" Kristiansson
----------------------------------
"The Sound Is In The Iron"
www.vintagedesign.se  www.tkaudio.se


Rob Flinn

neve 2254/33609
« Reply #30 on: July 01, 2007, 07:41:24 PM »
Thanks Tekay
regards Rob


 

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