Gain Pot Help

[rubis]

Hi everyone,
this is my first time at posting on here, although I have been reading it for some time, and I need a bit of advice.
I have just bought a Trace Elliot BLX130, which is in need of a little bit of work to get it up to scratch, the main problem being the input gain potentiometer which has disintegrated inside and has a snapped shaft............its definately Donald!

The markings on the pot are 50KB and 325a and it has three terminals.

Firstly is the 325a significant in getting a replacement?

Could I go along to somewhere like Maplins and ask for a 50KB pot and would I get the correct one, or do I need to be asking for something in particlular?

thanks in advance

H

[Ancient Mariner]

I don't know about the 325a, but the pot impedance is 50K ohms. Taper type is denoted by the B (I think B is log taper, but I can't remember for certain right now).

Edited January 19, 2011 by Ancient Mariner

[icastle]

325a is immaterial (I guess some sort of manufacturer part number).

50KB translates to a 50KΩ Linear pot.

Unfortunately, 50KΩ is not a preferred value so you're not going to find it in Maplins.

RS do a suitable one [url="http://uk.rs-online.com/web/search/searchBrowseAction.html?method=getProduct&R=0168370"]here[/url] - but make sure the shaft is the same type as the broken one if you want to get the original knob to fit back on it

[Bill Fitzmaurice]

[quote name='icastle' post='1095871' date='Jan 19 2011, 07:45 PM']Unfortunately, 50KΩ is not a preferred value so you're not going to find it in Maplins.[/quote]100K will do in a pinch.

[rubis]

thank you very kindly gents