Looking for manual/Schematic for the Presto 88A

[apoklis]

I've found info on most the presto amp but cant seem to find anything on the 88a .If someone would please pm me copy of the 88a schematic or point me to a link ,I would really appreciate it .I'm looking forward to trying to revers engineer this monster to figure it out .

[apoklis]

i found the BBC technical Instructions on the set up of two 6n and two 88 with a with a 41a limiter and a 89a configured as a monitor. Is changed over to be run on 50hz at 230 but dose have schematic for all. The interesting part is, the reconfiguration of the 88 to use the BBC Grampian B feedback head instead of the presto 1d/1c . I ll post a copy incase any want to look at it.

TI_R4_Presto Recording Equipment.pdf

[markrob]

Thanks for posting. I see they refer to TI R2 Section B (see page 13 of the document) for more info on the feedback adaptation for the Grampian head. Do you know if this document is available?

Mark

[markrob]

Hi,

I answered my own question. Found the document and its quite full of very useful info on the Grampian design.

TI_R2_BBC Disk Recording Head Type B.pdf

Mark