WTB: Searching two quad potentiomers 100k linear

[josoeff]

Hello All

I'm looking for two 9 or 16 mm 100 quad potis in 100k ohms linear.
After browsing through all of the Mousers, Digikeys and known shops, I am a little perplexed because many producers have listed quad potis in their data sheets, but nobody has them in their inventory. I am currently building an LC audio subwoofer filter and need two of them.

Does someone perhaps have two quad potis in the home stock or does someone know a shop that still carries this versions?

Thank you in advance!

Josoeff

 

[Mooly]

I've never seen them listed anywhere (usual suppliers) but they are available.

OMEG manufacture these. Might be worth approaching them if you can not turn anything up.

Potentiometer Switch

 

[martyh]

This seller has balanced stereo smd attenuators (4 section) Bought one based on Ray's posts but have not tried it yet. They are supposed to be better matched across section than any pot

lasercollection on eBay

 

[josoeff]

I have actually written to a number of suppliers, but have not received any feedback so far.
It's very strange, when I was restoring my Teac A-BX 10 I only found the quad poti in Japan, there was simply no quad poti available at that time and at the moment there are a lot of RK27 quad pots on offer -but no 9 or 16 mm ones :-(

 

[josoeff]

Thanks Martyh! This seller is unfortunately blocked here from ebay

 

[josoeff]

Some offers can be found in a roundabout way.
They seem to be quite good, but overqualified for my purposes, simpler versions would be sufficient

 

[martyh]

Would not doubt because of complaint from DACT. Stupid to use their name even with "type" attached.

 

[josoeff]

indeed, very delicate -sometimes advertising backfires

 

[multisync]

have you tried these guys?

https://www.potentiometers.com/series70.cfm

 

[josoeff]

not yet, it's probably a wholesaler, but I'll ask there - thank you!

 

[rayma]

Thanks Martyh! This seller is unfortunately blocked here from ebay

https://www.ebay.com/sch/lasercollection/m.html?_nkw=&_armrs=1&_ipg=&_from=

 

[josoeff]

Thanks Rayma! No chance, Ebay blocked the store. I think it's as Martyh wrote: DACT is a trademark.

 

[rayma]

Sounds like somebody complained to ebay. I can still see the ads here in the USA, though.
Just watch for the seller "lasercollection" to return, less DACT naming.

 

[josoeff]

The only available quad poti is a 9 mm one from Bourns (PTD904-1015F-A104 ), it's logarithmic but better than no pot.
The miniature poti does not fit on the soldering points of the board and I thought about whether you can separate the two rear of the four levels and connect them with a coupling. Has someone made experience with the disassembly of such a poti?
Theoretically, you could also place four rotary trimmers one behind the other and connect them mechanically with one common axis. However, I have not yet located suitable trimmers

 

[bOTL]

Quad 100K Alps

RK27114A0-F25-C0-A103 Alps Alpine | Mouser

Quad 100K Alps

 

[josoeff]

Thanks bOTL! Unfortunately, the RK27 quad poti is over-dimensioned in terms of quality and dimensions, there is only enough space for a 16 mm or smaller poti.

 

[Mooly]

I'm not sure you could successfully separate those pots.

Is it possible to redrill the pcb?

 

[josoeff]

That's a good idea. There would be different conductor lines to be laid, the biggest problem is probably my holes, which would make the board Swiss cheese. I could use a breadboard as a drilling template, but it would be difficult to position it well on the assembled board. If I can't find a suitable potentiometer, I will probably wire the 9 mm poti freely.