low PI voltages

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Ed de Jager
Posts: 186
Joined: Fri Jan 14, 2005 4:01 pm
Location: the Netherlands

low PI voltages

Post by Ed de Jager »

Hi all,my PI plate voltages in my Dlite are a bit low.Without tube they are 389 Volts but with tube they are 243 Volts.Tried several tubes with no difference.
Checked all the usual things like wiring and components but am unable to find where this is comming from.
PT is 300-0-300@0.2A.Diode rectified.
The reason i was checking voltages in the first place was that i am getting more distortion that i used to and the distortion is not as nice as it used to be.All the other voltages are o.k.
Any help is greatly appreciated.

Ed
JimiB
Posts: 359
Joined: Sat Jun 04, 2005 9:03 pm

Re: low PI voltages

Post by JimiB »

can you post the voltages for the whole PI with the tube installed?
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glasman
Posts: 1446
Joined: Wed Jan 19, 2005 10:37 pm
Location: Afton, MN (St Croix River Valley)
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Re: low PI voltages

Post by glasman »

Also which PI.

The bluesmaster (marshall style) plates typically run about 255 to 260 with a supply of 420V.

Fender style PI 820/24K will run close to 300V with a 420V supply.

There may not be anything wrong.

Gary
Located in the St Croix River Valley- Afton, MN
About 5 miles south of I-94
aka K0GWA, K0 Glas Werks Amplification

www.glaswerks.com
Ed de Jager
Posts: 186
Joined: Fri Jan 14, 2005 4:01 pm
Location: the Netherlands

Re: low PI voltages

Post by Ed de Jager »

Thanks Gary,i wasn`t aware of that.
It is indeed the Bluesmaster PI.
The amp is o.k.It is the speaker that is causing the distortion.Played through a different one yesterdayevening and only the usual heavenly sounds filled the room.

Ed
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