Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => PC Express and JSchem - Schematics and Layout diagrams => Topic started by: tubenit on April 18, 2017, 12:35:00 pm
-
Some tweed schematics. CHECK these for ERRORS! Compare with original Fender tweed schematics. Obviously, some of these are only based on the tweed amps and NOT exact copies. .
with respect, Tubenit
-
5E7 Bandmaster. CHECK for ERRORS! Compare with original Fender schematic
There may be other threads in the SCH Library that carries more information on these. Such as the 5F6-A Bassman has a thread that includes how to add reverb, vibrato or FX to it.
With respect, Tubenit
-
The tremolo on this one was somewhat confusing. PLEASE CHECK for ERRORS and compare this with the original Fender 5E9-A Tremolux schematic and layout.
http://el34world.com/charts/Schematics/files/fender/Fender_TREMOLUX_5E9A.pdf (http://el34world.com/charts/Schematics/files/fender/Fender_TREMOLUX_5E9A.pdf)
Note that the 5E9-A uses a 5U4GA rectifier for 395v on node A. Reportedly, the 5E9 used a 5Y3GT rectifier.
Note there are some changes to the 5E8-A schematic from the original. CHECK for ERRORS and compare this with the original Fender 5E8-A schematic and layout.
From HotBluePlates who used to own a Tremolux:
If you're looking to build one for yourself, I'd recommend going with the large-sized cabinet they used for most of these: 20" x 22" x 10". It seems to add to the depth of sound for this amp. You might also consider being open to dropping the coupling caps to 0.022µF based on listening tests. Just like the 5E3, 0.1µF can get too woolly, especially when the output section is distorting. The trem is excellent on these, as it only has to overcome the relatively small bias at the cathodes of the paraphase inverter. Very deep & swampy.The paraphase also seemed to give a richer sound, probably by adding a bit of distortion before the output tubes. I definitely thought it sounded more complex than my 5E3 copy.
With respect, Tubenit