Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: dinkotom on September 15, 2011, 03:19:33 am

Title: Is there a mistake in this schematic: SF Super Reverb with 4 Ohms speaker load?
Post by: dinkotom on September 15, 2011, 03:19:33 am

http://www.webphix.com/schematic%20heaven/www.schematicheaven.com/fenderamps/cbs_70w_mstrvol_pullsw_super-pro-bmstr_rev.pdf (http://www.webphix.com/schematic%20heaven/www.schematicheaven.com/fenderamps/cbs_70w_mstrvol_pullsw_super-pro-bmstr_rev.pdf)

Title: Re: Is there a mistake in this schematic: SF Super Reverb with 4 Ohms speaker load?
Post by: stratele52 on September 15, 2011, 04:56:00 am

What do you mean by mistake ? They said 4 ohms minimum load.

IMO the green wire is for 8 ohms speaker load and the green-yellow for the 4 ohms load 

Title: Re: Is there a mistake in this schematic: SF Super Reverb with 4 Ohms speaker load?
Post by: dinkotom on September 15, 2011, 06:08:08 am

my bad! :BangHead: I thought all Super Reverbs have 2 Ohms load, apparently not - I just had a look at the back of my friend's late 70's SR: 4 Ohms!

Title: Re: Is there a mistake in this schematic: SF Super Reverb with 4 Ohms speaker load?
Post by: phsyconoodler on September 16, 2011, 10:50:59 am

Hmmmmm....never seen a Super with 4-16 ohm 10" speakers yet.But I haven't seen too many later siverface Supers anyway.Earlier ones are all over the place but the later ones are rare in this neck of the woods.