Hope this design can be useful to someone.
It's an analog "quasi constant" input impedance attenuator, with adjustable output impedance.
This design requires some degree of matching L & R LDRs to avoid unbalances, and lesser matching with control net LDRs (to achieve desired impedances).
With 18 NSL-32SR2 on hand, I've build it (in fact, now it's my favourite volume's att.).
Works pretty well: Not too much unbalance, acceptable attenuation law & impedances.
Using same idea, a "quasi constant" output impedance (volume level independent) can be made.
It's an analog "quasi constant" input impedance attenuator, with adjustable output impedance.
This design requires some degree of matching L & R LDRs to avoid unbalances, and lesser matching with control net LDRs (to achieve desired impedances).
With 18 NSL-32SR2 on hand, I've build it (in fact, now it's my favourite volume's att.).
Works pretty well: Not too much unbalance, acceptable attenuation law & impedances.
Using same idea, a "quasi constant" output impedance (volume level independent) can be made.
