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North Reading Engineering HiFi Forum

HIFI AMPLIFIERS => Vintage McIntosh Amplifier Repairs, Restorations and Modifications => Topic started by: nre_admin on May 30, 2024, 05:48 AM

Title: MC40 pair for restoration
Post by: nre_admin on May 30, 2024, 05:48 AM
MC40s for chassis replacement and complete restoration.
Title: Re: MC40 pair for restoration
Post by: nre_admin on May 30, 2024, 05:50 AM
First of the pair to be completely broken down for restoration.
Title: Re: MC40 pair for restoration
Post by: nre_admin on Jul 04, 2024, 05:15 AM
Chassis bottom covers are grit blasted, chem-etched, primed and painted then backed at 105F for 2h.  The pot metal badges are benched to brighten the lettering.
Title: Re: MC40 pair for restoration
Post by: nre_admin on Jul 04, 2024, 05:20 AM
Recapped, power supplies replaced.  All solder pins and tabs desoldered and the OEM leads removed prior to restoration.
Title: Re: MC40 pair for restoration
Post by: nre_admin on Jul 04, 2024, 05:21 AM
Complete!
Title: Re: MC40 pair for restoration
Post by: nre_admin on Jul 04, 2024, 05:22 AM
%THD v. power (WRMS), each amplifier, same output tubes.
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