madbeanpedals::forum

Projects => General Questions => Topic started by: casssax on April 03, 2015, 10:44:30 PM

Title: 1/2 watt audio pots?
Post by: casssax on April 03, 2015, 10:44:30 PM
I'm working on a tube amp project and I need to order some 1/2 watt pots for it but I'm having a hard time finding them.
Does anyone know a good source for 1/2 watt or more pots?

I tried Mouser.com but by the time I filter for audio taper and the resistance I need and the only ones left are not stocked.

I'm looking for 250k and 1M pots for the pre,gain,treble, and bass pots.

Thanks.
Title: Re: 1/2 watt audio pots?
Post by: davent on April 03, 2015, 11:02:27 PM
Lots of people just use the 24mm Alpha's in tube amps that are rated for 1/4w in the Audio line, 1/2w in linears. Sold by Tube Depot for amps as well as probably Mouser.

https://www.tubedepot.com/products/alpha-24mm-audio-taper-pot-8mm-bushing
http://www.mouser.com/ds/2/13/143103-185758.pdf

If you want to spend lots of money you could look at PEC's 2w.
http://www.digikey.ca/product-search/en?pv1092=3&FV=fff40004%2Cfff80540%2Cfffc0062&k=potentiometers&mnonly=0&newproducts=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=500
http://media.digikey.com/pdf/Data%20Sheets/Precision%20Electronic%20Components%20Ltd%20PDFs/MIL%20Style%20RV4.pdf

Digikey filters out 28, half watt or greater audio pots, didn't check the values.

http://www.digikey.ca/product-search/en?pv1092=3&pv2=5&pv2=181&pv2=6&pv2=143&pv2=7&FV=fff40004%2Cfff80540&k=potentiometers&mnonly=0&newproducts=0&ColumnSort=0&page=1&stock=1&quantity=0&ptm=0&fid=0&pageSize=500