Mark Levinson no:29
 

Does anyone know which transistors are used in the output stage of the Mark Levinson 29?
I want to check the bias settings in this amp.
Does anyone know where i can get a schematic.

Thanx

JP

MJ15024/MJ15025.
But you should be able to read the TO3s on the funny heatsinks of the 29.
ML didn't make a mystery of the type of devices used.
Not on the 20, not on the 23, also not on the 27 and 29.

Mark Levinson no:29
 

Do you know what the bias reading should be for this amp

The ML 29 is a regular class AB amplifier.

Because the heatsinks is only folded metal plating the bias is set just high enough to avoid cross-over distortion.
Put a DMM across the emitter resistor of any one of the 4 output devices and adjust between 25 and 35 mV.

Thanxs Jacco

i have somewhere a note that you have a total bias current of the output stage arround 120mA???!!

I have the mark levison 29 schematic but the file is too much big for sending it by the forum, if you could give me your email I can send it to you, moreover I can help you for setting the bias.

thanks - my mail is

mukihrATyahoo.com


thanks :)
many regards

Please send me the mark levison 29 schematic also.
My email address is askchan@netvigator.com

best regard

Hi,

Can you send it to me too at :

si_jopie0382(@)yahoo.com

Thanks in advance