Audio preamp with Baxandall tone control

[Iwt]

hello. Does anyone have the schematic for an audio preamplifier with baxandall tone control?

 

[artosalo]

Here two with different technology:

 

[dreamth]

Here's a good one: https://elektrotanya.com/aiwa_st-r30_sa-c30_sa-p30e_k_g_sm.pdf/download.html

 

[ejp]

You'd be pretty hard pressed to find a schematic of an audio preamp without a Baxandall tone control. They do exist, but not common.

 

[Ken Newton]

See the OPA1656 op-amp data sheet, Fig. 8-9.

 

[Ken Newton]

An option if you're not set on a Baxandall type tone control, is John Broskie's diy single-knob passive 'Tilt' type tone control, ala' Quad. It uses a single three-position switch, rather than two potentiometers. Pros and cons to each type of control.

https://www.tubecad.com/2015/06/blog0326.htm
https://glass-ware.stores.yahoo.net/tonecontrols.html