My first electrostatic speakers, JansZen

[Buck Rogers]

Owned a hundred Janszen panels and repaired Electrostats over the past 35 years, Owned...

Dayton Wright

Acoustat X, 5 pairs with Direct drive tube amps. Still own one set.

Beveridge System III's.

KLH Nines two sets. Have some bass panels.

Koss.

Jensen.

Still have a lots of stat parts Janszen, Beveridge, KLH panels including these upgraded model 130's.

 

[johnhoef]

Buck,
I am in the process of repairing and upgrading a pair of Janszen 130 speakers. Among a few other parts, it is recommended to replace the potentiometer with a 50k. I am assuming a 2 watt wirewound is the correct style pot?

 

[Buck Rogers]

There are two types of Janszen power supplies.

One type adjusts the High Voltage on the panels and appear to be between 2K and 5K ohm two watt.

The other is a simple 8 or 16 ohm "L" pad on the speaker input.

 

[johnhoef]

Mine is of the type that adjusts the high voltage. My question is - does it need to be wirewound. I think the answer is yes.

 

[Buck Rogers]

If Wirewound is what was in there then I'd use the same.

The higher you set the volume with the HV control the louder you play them the faster the panels wear.

That said I've only had problems when a customers wife misted the huge Boston fern that hung over the stat panels every day...



Buck

 

[johnhoef]

Thank you, Buck...I went ahead and ordered the wirewound pots.
Oh my! I bet the customer's wife had a nice light show?

 

[Buck Rogers]

No lights, Just a dead tweeter panel every few months...