Too Trebly Supro

[billcreller]

Back around 2007 I built a single-end type Supro.  Schematic Heaven calls it "Late'50s 1X 6V6 Amp"  It works good, but  it has a too treble tone for my taste.  I had added a cathode cap to the cathode resistor on the 6V6, and added one the 2nd half of the 12AX7, (2nd stage pre-amp ?)  Coupling caps are .047 in place of the spec .01 caps.  Very simple circuit, but not as simple as I am !
Any ideas about getting less treble from this ?   
I'll see if I can show the schematic....

well, that didn't work !

[sluckey]

A different speaker could be all you need.

[PRR]

> cathode cap ....the 2nd half of the 12AX7

10-20uFd? Or 0.68uFd?

0.68 gives the Marshall Scream. Not what you want.

Fender leaned to 10+uFd which gives full bass (equal to treble).

[billcreller]

That cathode cap is a 20 mf.   I'll try smaller values.  The speaker is a 10 inch Weber. Chassis has 
a speaker jack, so I can try some others..

Thanks !

[Willabe]

Smaller cap value will have less bass. 

[PRR]

> Smaller cap value will have less bass. 

Which can have the effect of "more treble".