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RE: Curious

71.63.69.67

In Reply to: RE: Curious posted by Steve O on August 22, 2023 at 04:17:29

Call me ignorant. Two per channel but I don't really know their role in the circuits.
LowIQ

Follow Ups:

RE: Curious - Rod M 06:47:54 08/22/23 (2)
Here's some info:

Tube Compliment
3 - 12AX7A Input and Phase Inverter
4 - 12AT7 Voltage Amplifier and Driver
4 - KT88/6550 Power Output

-Rod
- https://www.mcintoshlabs.com/-/media/Files/mcintoshlabs/Docu (Open in New Window)
- RE: Curious - Tre' 16:40:20 09/03/23 (1)
  I'm seeing 1/2 a 12ax7 input gain stage (V1), a 12au7 phase inverter(V2), a 12bh7 driver (V3) and a 12az7 cathode follower (V4) per channel.
  
  Tre'
  Have Fun and Enjoy the Music
  "Still Working the Problem"
  - http://www.tubebooks.org/file_downloads/McIntosh/MC275_sch.p (Open in New Window)
  - I had no idea, the new ones are a completely different circuit. - Tre' 16:42:35 09/03/23 (0)
    .
    Have Fun and Enjoy the Music
    "Still Working the Problem"
    - https://www.drtube.com/schematics/mcintosh/mc275-mk4-service (Open in New Window)

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