transistor tone control schematic

[diptangshu]

I need a schematic for transistor Bass & Treble control. If any one have this please send or upload. I made one with LM1036N but I am not satisfied with that. Looking for a better one. I have LM4766T power amp and I will play the tone control with this amp. Thanks in advance.
diptangshu@gmail.com

[currentflow]

Hi diptangshu,

Although not transistor based, I can recommend the ESP Hi-Fi Preamplifier by Rod Elliott. I have built this using LM4562 opamps and it sounds very good. His circuit provides a +/- 10dB tone boost/cut, which is rather more subtle than many of the more common designs.

Hi-Fi Preamplifier

Regards,
Steve

[diptangshu]

Thanks Steve, I will try this schematic but have to design the PCB for it.

[roly3055]

Originally Posted by diptangshu

Thanks Steve, I will try this schematic but have to design the PCB for it.

Check This Post

Please comment my PCB!

[diptangshu]

Originally Posted by roly3055

Check This Post

Please comment my PCB!

thanks dude

[mjf]

hello.
found some tonecontrols with transistors............many years ago they were available as a kit............
and there is always the possibility to fiddle around with the parts (bc109c = bc549c,.......)
greets

[wahab]

Originally Posted by mjf

hello.
found some tonecontrols with transistors............many years ago they were available as a kit............
and there is always the possibility to fiddle around with the parts (bc109c = bc549c,.......)
greets

The second schematic should provide the better perfs in matter
of THD and noise as it s an active baxandall tone control.

BC109C can be replaced by BC550C or any generic low noise
NPN BC series, BC184C BC309C BC413/414 BC549C , the list is
endless...
In japanese bjts, 2SC1775 2SC1845 2SC2240 are good candidates.

[diptangshu]

Thanks MJF, let me try them.

BC109C can be replaced by BC550C or any generic low noise
NPN BC series, BC184C BC309C BC413/414 BC549C , the list is
endless...
In japanese bjts, 2SC1775 2SC1845 2SC2240 are good candidates.

Wahab, I am willing to replace those BCs with 2N3904. what do you think?

[Slipstreem]

Some of the circuits above that specifically state "BC109C" may be relying on the very high gain these devices have (typically around 500), so the 2N3904 with a much lower typical gain may not suffice in all cases. If you want transistor circuits to behave as designed, always use equivalent devices to those specified.

[mjf]

........yes,the bc109c is a low noise transistor with big hfe-values (around 500).
here is annother schematic, it was used in mixers,see the multiple inputs.......
präsenz = mid control