Marshall Power Amp questions
jtees4
dirt cheap (I know and trust the seller)....so I was wondering....what
do I need to use it? I would guess some sort of pre amp, and of course
a spaeker cabinet. Is that it? Any recommendations? Any reason not to
go this way? Am I missing something (besides my sanity)? Thanks.
****
http://www.soundclick.com/bands/default.cfm?bandID=789610
WB
> I came upon a Marshall 9005 Rack mount Tube amplifier locally that is
> dirt cheap
> a spaeker cabinet.
how much !
That's about it.
Those things only have a volume control per channel too
and are popular for running stereo setups.
They are really top of the line pro gear for road warriors too.
jtees4
moonpie
you need a pre-amp, preferably a rack mount, either a dedicated
overdrive preamp like the marshall one (forget what its called) or a
multi-effects doodad, and then a speaker cabinet.
Yeah it can sound great.
At a gig.
If you've got a roadie to set it up foryou and dial all your
prerequesite gobble-dy-gook into it.
boardjunkie
They're good sounding pwr amps....I've had a few through here over the
years. Just beware, they have a tendency to waste the filter caps. Not
sure if it was a QC issue with the OEM parts, or heat buildup if the
amp was rack mounted. They don't have a fan and really *should* have
one to evacuate the heat from the enclosure.
If the price is right, I'd say grab it.
jtees4
Probably $100...that is really the only reason I am considering it. I
could always sell if I find it too much of a pain. Since I'm getting
older, everything is too much of a pain.
****
http://www.soundclick.com/bands/default.cfm?bandID=789610
jtees4
wrote:
I do have a VOX Tonelab ST laying around (and a Pod XT)...hmmm.
****
http://www.soundclick.com/bands/default.cfm?bandID=789610
jtees4
$100
****
http://www.soundclick.com/bands/default.cfm?bandID=789610
LULU
Sounds like a reasonable deal. The 9005's need plenty of air or they
are prone to heat failure. The 9005 amp is often seen coupled with
the Marshall 9001 preamp. The 9001 preamp always sounded thin and
"brittle" to me. I'm sure that you can find a better sounding rack
mounted preamp with a bit of searching. Hey, go for it!
Good Luck,
Lulu : )
You might need these -
http://www.marshallamps.com/downloads/files/9000%20Series%20hbk.pdf
boardjunkie
>
> - Show quoted text -
Thats a steal.....
jtees4
wrote:
So last month I picked up a JTM60 that is prone to burning up...now I
may get a Power amp that is prone to burning up (lot's of folks have
fitted them with fans)...geez...these Marshall products sound
great..WHILE THEY WORK! Kind of reminds me of the way Jaguars used to
be pre Ford. I'll have to think a little more on it. Thanks.
****
http://www.soundclick.com/bands/default.cfm?bandID=789610
jh
for the speaker cabinet(s)
either one stereo cab
or two mono cabs
or one mono cab plus a suitable load resistor for the unused channel
regards
Jochen
chickenp...@hotmail.com
if you want to use one cab just bridge the amp..................Dave.
P.S. when I go this route I use a digitech 2101 with whatever tube
power amp and my fender 4x12 wired in stereo. sounds like a
train..................still dave
Jim
I have no use for that piece of gear, but would snatch it up at that price.
But don't think it's going to give you vintage Marshall tones. I admit
that I don't have time on these, but it seems to me that guys that
expect to get the instant Marshall crunch tones often complain. I could
be mixing up my amps, but this one might be "stiffer" and have more
headroom than you're expecting.
Jim
Sorry, hit "send" too quickly.
For preamp: I'd be looking for all tube with channel switching and
plenty of gain. I liquidated most of my rack gear a year or so ago. I
really liked my Soho QTR-1, if you can find one. More reliable
incarnation of the classic Kittyhawk Quattro.
Another "bargain type" is the Peavey Rockmaster.
jh
the 9005 had a bridging option?
If not, IMHO it's not a good idea to let two tube power amps run into
only one load.
A stereo cab is ok - of course
regards
Jochen
WB
> expect to get the instant Marshall crunch tones often complain. I could
> be mixing up my amps, but this one might be "stiffer" and have more
> headroom than you're expecting.
Those amps are meant to play stadiums at ear bleeding levels ;-} .
boardjunkie
>
> - Show quoted text -
No it doesn't. The later "monoblock" amps could be bridged, *not* the
9005. Don't try it.....
jtees4
Thanks all. I came home from work later than I planned, I am waiting
to hear back but I suspect it's gone already. I'll let you all know if
I end up with it.
****
http://www.soundclick.com/bands/default.cfm?bandID=789610
chickenp...@hotmail.com
>
> - Show quoted text -
I was unaware that this amp could not be bridged.......my
fault................Dave
RS
That's a decent amp. I bought one years ago cause I was looking for a
test bed for some circuit designs for a studio-based guitar rig. The
circuit details are not fresh in mind, but I'll try to provide some
info.
Mine may have had a toasted standby switch (see below). I don't care,
of course, as it was headed for my shop anyway. I did end up making
the signal path a bit more direct, and changed the presence controls
to general negative feedback controls (to reduce NFB). A few other
changes to circuit topology to adapt to more studio-oriented
application.
I adapted mine to use either 6L6 family or EL34 (the original output
tubes). I think I ended up using 6CA7's in it (beam tubes) so it's not
set up for the typical Marshall EL34 sound. I was looking for rounder
sound at lower volumes, and beam tubes generally do that better than
EL34's, IMO.
A couple things worth mentioning:
The standby switch is wired 'upstream' from the first filter cap and
rectifiers, so there could be significant inrush through the switch.
You could have a good tech take a look at that.
Also, there's no choke in the power supply, so it's a bit less
efficient than the normal amp supply. Since there's no preamp section,
there won't be as much concern about ripple. The choke still helps,
but I wouldn't bother trying to put one in.
There was something else a bit odd about the design...maybe I'll
remember later. No show-stoppers though. It's strange to have a
Marshall-type circuit in a stereo amp. You don't think 'overdrive'
with that amp. Not sure if I'd want to carry that around. Mine is
permanently in one of the larger studio racks.
I'd say definitely go for it, as long as you understand what the amp
is and can use that. You should be OK.
RS
PS: There's a schematic here:
http://marshallschematics.com/gifs/9005.gif
You may want to grab that, just in case.
jtees4
Thanks for all the info, looks like I won't be getting it anyway.
****
http://www.soundclick.com/bands/default.cfm?bandID=789610
moonpie
the Rockmaster is a good choice if you can find one.
RS
Why not? I just noticed that you said it's $100. Definitely go for
it at that price if you can.
jtees4
Probably sold, I was stuck at work late yesterday so I could not get
there fast enough. Otherwise I would have grabbed it for sure.
****
http://www.soundclick.com/bands/default.cfm?bandID=789610
Rocket Scientist
Oh well. That wasn't gonna last long at $100. Just the tubes would
have been worth that (probably not used much). Don't worry...
something else will come along.
TheChris
news:9m43d6hnun902i5jp...@4ax.com:
Buy it... A good tube power amp is a good tube power amp. Don't worry
about 'vintage Marshall sound'... Get any preamp, and have fun with it..