Wanted: Drake 1202-164

List tube amp related items you wish to sell or trade. Private sales only. No dealers or manufactures.

Moderators: pompeiisneaks, Structo, mhuss, HeeBGB

Post Reply
stratburst
Posts: 4
Joined: Sun Apr 25, 2010 1:27 am
Location: Florida USA

Wanted: Drake 1202-164

Post by stratburst » Sun Oct 22, 2017 8:12 pm

Anyone have an early 1202-164 collecting dust? I have a mid 1969 JMP 50 with a replacement Drake 1202-164 PT from 1975 that's providing 360V B+. The voltage is about right for 1975 but not '69 so I'm looking to swap it out with a period correct PT providing ~420V B+. My second choice would be to go with Merren but I figure it's worth a try. Thanks!

User avatar
martin manning
Posts: 7875
Joined: Sun Jul 06, 2008 12:43 am
Location: 39.1N, 84.5W

Re: Wanted: Drake 1202-164

Post by martin manning » Sun Oct 22, 2017 10:50 pm

Marstran spec says you are about right for that part number. I'm no expert though. http://www.marstran.com/164.htm

stratburst
Posts: 4
Joined: Sun Apr 25, 2010 1:27 am
Location: Florida USA

Re: Wanted: Drake 1202-164

Post by stratburst » Mon Oct 23, 2017 1:47 am

I'm not an expert but based on my research it appears Drake dropped the B+ voltages sometime around 1974 allegedly per Marshall's request to prolong tube life.

User avatar
martin manning
Posts: 7875
Joined: Sun Jul 06, 2008 12:43 am
Location: 39.1N, 84.5W

Re: Wanted: Drake 1202-164

Post by martin manning » Mon Oct 23, 2017 4:28 pm

I'd think that would result in two different part numbers.

stratburst
Posts: 4
Joined: Sun Apr 25, 2010 1:27 am
Location: Florida USA

Re: Wanted: Drake 1202-164

Post by stratburst » Tue Oct 24, 2017 12:40 am

A perfectly reasonable assumption but according to several very reliable sources the design spec changed over the years. Chris Merren offers an early spec 1202-164 that delivers 420V. I may end up taking this route if I don't find an original. Maybe its a long shot but worth a try. I've dredged up seemingly impossible to find original parts for resto's before.

User avatar
martin manning
Posts: 7875
Joined: Sun Jul 06, 2008 12:43 am
Location: 39.1N, 84.5W

Re: Wanted: Drake 1202-164

Post by martin manning » Tue Oct 24, 2017 12:46 am

I suppose keeping the same part number would insure that any replacements would get the lower "safer" voltage, and perhaps that was Marshall's intent.

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest