Marshall 8008 amp

[Cunning Linguist]

Hi everyone,
does anyone here have a circuit for the Marshall 8008 Valvestate amp or is
able to tell me the values of R8 and C12 as both are fried. Apart from these
2 components the amp looks great.
Thanks in advance
Cheers
Tony..

 

[Phil Allison]

"Cunning Linguist" <tleathem@netspace.net.au> wrote in message
news:c64l9l$2n0v$1@otis.netspace.net.au...

Hi everyone,
does anyone here have a circuit for the Marshall 8008 Valvestate amp or is
able to tell me the values of R8 and C12 as both are fried. Apart from
these
2 components the amp looks great.
Thanks in advance

** The Electric Factory in Melbourne have tech info for Marshalls.





.......... Phil

 

[Tweetldee]

"Phil Allison" <philallison@optusnet.com.au> wrote in message
news:4085dbfc$0$25661$afc38c87@news.optusnet.com.au...

"Cunning Linguist" <tleathem@netspace.net.au> wrote in message
news:c64l9l$2n0v$1@otis.netspace.net.au...
Hi everyone,
does anyone here have a circuit for the Marshall 8008 Valvestate amp or
is
able to tell me the values of R8 and C12 as both are fried. Apart from
these
2 components the amp looks great.
Thanks in advance



** The Electric Factory in Melbourne have tech info for Marshalls.





......... Phil

R8 is 10 ohms, C12 is 220 nF (0.22 uF)
The schematic doesn't give the power rating of R8, nor the voltage rating of
C12. I would suggest that you use at least 1 watt for R8, and 250VDC for
C12
--

Cheers!!!!
Dave M

Good judgement comes from experience, and a lot of that comes from bad
judgement.

 

[Phil Allison]

"Tweetldee" <

"Phil Allison"

"Cunning Linguist"

Hi everyone,
does anyone here have a circuit for the Marshall 8008 Valvestate amp
or
is
able to tell me the values of R8 and C12 as both are fried. Apart from
these
2 components the amp looks great.
Thanks in advance



** The Electric Factory in Melbourne have tech info for Marshalls.





......... Phil


R8 is 10 ohms, C12 is 220 nF (0.22 uF)

** Looks like the output Zobel network has been the victim of supersonic
oscillation.






............. Phil

 

[Cunning Linguist]

Thanks for the help fella's
cheers
Tony..

"Cunning Linguist" <tleathem@netspace.net.au> wrote in message
news:c64l9l$2n0v$1@otis.netspace.net.au...

Hi everyone,
does anyone here have a circuit for the Marshall 8008 Valvestate amp or is
able to tell me the values of R8 and C12 as both are fried. Apart from
these
2 components the amp looks great.
Thanks in advance
Cheers
Tony..

 

[Steve Robertson]

R8 is 10 ohms, C12 is 220 nF (0.22 uF)

** Looks like the output Zobel network has been the victim of supersonic
oscillation.

Ah, brings back bad memories of ETI/AEM (Tilbrook) kitset amp's.