Alps. Rh2702

[rock12]

I have an alps 2702 50kax2 stereo pot with 8 pins how these to be wired cannot find anything on the web

 

[ubergeeknz]

I have an alps 2702 50kax2 stereo pot with 8 pins how these to be wired cannot find anything on the web

The 4th set of pins is probably to ground the casing. The others are as usual for a potentiometer (gnd / wiper / input)

 

[rayma]

Loudness taps. Use a DVM to identify which is wiper and which is the loudness tap,
or use this rear view diagram.

 

[rock12]

Thanks found the three that work as column the forth is still up for grabs

 

[Mark Tillotson]

Found this ALPS RH2702 8pins

 

[rock12]

I do not understand how the loudness control works on a volume knob. I thought loudness control was that button you pushed to extend the bass and treble when playing soft

 

[PRR]

> how the loudness control works on a volume knob

The tapered pot has a tap near 11 o'clock. Loudness not engaged, a resistor reduces all sound here. Loudness engaged, an R-C network on this tap reduces middles/highs when the pot is near 4 o'clock. (There are variations but that's the basics.)

 

[indra1]

I think the RH2702 is fake, not a product of Alps Japan.