New 700b/4000 owner

6

66stanger

New Around These Parts
#1
Joined
Jul 19, 2014
Messages
38
Location
Paris
#1
Hi,

I bought a 700b "700w rms" last week and it is stock (with only PS cap. 22000µf and rectifiers upgrade).
The power transistors are XPL609 and RCA.

I think that they are stock.

What is the best output transistors 609 or MJ15004 ?

It was with a 4000 for repair (in bad condition), but after 2 days of works, it looks new (1 lever knob is missed) :-/.
I'm in France, I must to replace the transformer in 220V to repair it...
To be continued... ;-)

Thank you for your reply anf sorry for my poor english... :-/
 
marcok

marcok

Chief Journeyman
#4
Joined
Jun 9, 2014
Messages
998
Location
Milan Italy
Tagline
I'm very curious about any tech item
#4
Specs for PL 4000 transformer :
-secondary 28 V
-power 25 W
-ac fuse 0.125 A ( for 230 Vac )
Ciao
Marco
 
Gepetto

Gepetto

Administrator
Staff member
#5
Joined
May 15, 2011
Messages
13,566
Location
Sterling, MA
Tagline
Old 'Arn Enthusiast
#5
66stanger said:
Hi,

I bought a 700b "700w rms" last week and it is stock (with only PS cap. 22000µf and rectifiers upgrade).
The power transistors are XPL609 and RCA.

I think that they are stock.

What is the best output transistors 609 or MJ15004 ?

It was with a 4000 for repair (in bad condition), but after 2 days of works, it looks new (1 lever knob is missed) :-/.
I'm in France, I must to replace the transformer in 220V to repair it...
To be continued... ;-)

Thank you for your reply anf sorry for my poor english... :-/
Click to expand...
Hello and welcome to the forum

MJ21196 is needed, not MJ15004.

Our good friend Alain Limas in Paris at Atlantic Audio Vintage is a repair expert in your area for Phase Linear.

Your original output transistors are XPL909...
 
NavLinear

NavLinear

Veteran and General Yakker
#6
Joined
Apr 12, 2012
Messages
6,023
Location
SoCal
#6
Welcome double six to Phoenix! Don't worry about your English - we'll figure it out. There are some great upgrades available for your 700B amplifier.
 
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