[Amps] 3-500zs to 8877

[Peter Voelpel]

Both tubes need 5V filament voltage but th 3-500Z wants more current

73
Peter

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
Behalf Of Val Erwin

A good example of the change you would like to achieve is available by
viewing the Ameritron series of amps. Specifically, compare the AL-82 (2 X
3-500s) to the AL-1500 (single 8877).(You can download the manuals)

Both amps use the same power suppply and the same chassis. Despite owning an
AL-1500, I have never explored what they do about the difference in filament
voltages between the two models.