Page 1 of 1

Marshall EL34 50/50 Pros/Cons?!?!?

Posted: Tue Jan 22, 2013 10:54 am
by jwojtysiak
Anyone use one of these or maybe the hundred watt version or the 9100/9200? I'm thinking about buying one for $400. I will be running a Verellen Meatsmoke Pre pedal though it into a 2x12 and a 4x12.

Will this be enough watts? I play heavy doom/stoner stuff.

The Verellen only has one out so there would be no way to use both channels of the power amp at the same time?

Thanks!!!

Re: Marshall EL34 50/50 Pros/Cons?!?!?

Posted: Tue Jan 22, 2013 9:02 pm
by Jeff-7
I've never used it, but reading up on it it seems that it has quite a bit of clean headroom so it should take pedals decently. Running a pre like the meatsmoke will probably get you into the territory you're looking for. Should be plenty loud, especially if you run it stereo. I would just run an ABY between the meatsmoke and the two sides. Any chance of trying it out before you buy?

Re: Marshall EL34 50/50 Pros/Cons?!?!?

Posted: Tue Jan 22, 2013 11:09 pm
by Gone Fission
(We're talking Marshall 9005, right?)
Con: the things are big, heavy, take up a lot of rack spaces. Pro: it's a couple of Marshall power sections in a box.

Should be pretty standard JMP/JCM 50 watt power section, including a presence control. They made these early 90s, so I don't know if they're into output transformers beneath cork sniffers, but I think that's probably nonsense. The circuitry is on PCBs but all the stuff that you'd want to be hand-wired -- tube sockets, transformer leads, filter caps, controls, jacks and switches. Should be easy to work on for anybody who knows anything about Marshalls.

If you're worried about bass from a Marshall power section, well, I wouldn't particularly. The Marshall preamp circuits, even the "Bass" versions, tend to dump a bunch of bass but the output section, not so much.

Re: Marshall EL34 50/50 Pros/Cons?!?!?

Posted: Wed Jan 23, 2013 2:28 am
by JohnnyC
i used to run this...
Image

and then i used to slave it from a framus Cobra ...two 4x12s and one 2x12...wet/dry/wet with stereo pingpong effects...
severe overkill...yes, pain in the arse to cart around/setup...yes...fun...hell yess

i also had teh 100/100 dual monoblock...i prefered the 50/50...there plenty of headroom for fuzzes/dirt boxes.

con - as already mentioned...it weighs a lot.

Re: Marshall EL34 50/50 Pros/Cons?!?!?

Posted: Wed Jan 23, 2013 9:30 am
by Gone Fission
That one isn't the 50/50 I know about. When did that one come out?

Re: Marshall EL34 50/50 Pros/Cons?!?!?

Posted: Wed Jan 23, 2013 10:49 am
by jwojtysiak
Gone Fission I was talking about the power amp JohnnyC posted above, not the 9005. I believe they came out in the mid/late 90's.

I never thought about the ABY. So use the ABY and split the pedal to each channel of the power amp and then each of the channels to each cab. Would this keep the signals integrity intact using the ABY?

JohnnyC did you consider the 9100/9200 at all? Did you just prefer the EL34 tube selection? How was the bass response?

I'm waiting on the pedal to be shipped, and then i can try the power amp as long as it's still for sale in the area.

Also on a short list is the Mesa 2 90 and the VHT/Fryette 2 90 2.

Re: Marshall EL34 50/50 Pros/Cons?!?!?

Posted: Wed Jan 23, 2013 11:36 am
by Communarchy
That thing will crush. If you still need headroom, adjusting the bias/swapping the bias resistor to run a pair of 6550/KT88 will push even more bass and near endless headroom. That is, if there is enough room in the chassis to fit the big bottle tubes.

Re: Marshall EL34 50/50 Pros/Cons?!?!?

Posted: Wed Jan 23, 2013 11:43 am
by jwojtysiak
I don't think there is enough room for KT88s. If there is, please let me know!!!

If not, I might have one side set up to take a pair of 6L6's.

Re: Marshall EL34 50/50 Pros/Cons?!?!?

Posted: Wed Jan 23, 2013 8:23 pm
by JohnnyC
i gravitate towards EL34(and EL84s) so didnt consider the others (plus they werent readily available for me to try out/test at the time)

RE:low end response,
When I had that rack setup, I was playing heavier modern metal styles…before I discovered how much I loved fuzz.
It was super uber tight but it wasn’t saggy either…just felt like a nice balance.
This was the 50/50…I think the 100/100 was slightly tighter.
If you want that faux percussive stop start tight…like the djent guys, im sure a lot of their “technique” is reliant on noise gates like the isp decimator…

RE- using both channel/sides of the power amp...from memory there are seperate output jacks for each side on the rear...allowing you to slave one from the other.
its been a while, but i think that would work. if that fails, just plug a pedal after your Pre with stereo outs into both channels. if you have something with stereo/pingpong fx, and hook out one cab per amp side...(you can even have each side set to a different voicing)

On another note, another power amp ive been impressed (not owned, but heard) are the VHTs and Mesas.
The matrix power amps seem to be getting a lot of thumbs up from the axe-fx guys.
http://www.matrixamplification.com/
may not be your cup of tea, but worth a look anways.

Another thing to consider RE tight low end are speaker/responses etc

Re: Marshall EL34 50/50 Pros/Cons?!?!?

Posted: Wed Jan 23, 2013 9:42 pm
by Jeff-7
jwojtysiak wrote:Gone Fission I was talking about the power amp JohnnyC posted above, not the 9005. I believe they came out in the mid/late 90's.

I never thought about the ABY. So use the ABY and split the pedal to each channel of the power amp and then each of the channels to each cab. Would this keep the signals integrity intact using the ABY?

JohnnyC did you consider the 9100/9200 at all? Did you just prefer the EL34 tube selection? How was the bass response?

I'm waiting on the pedal to be shipped, and then i can try the power amp as long as it's still for sale in the area.

Also on a short list is the Mesa 2 90 and the VHT/Fryette 2 90 2.

Yeah just feed the Preamp directly into the ABY then feed both outs to their respective sides. I don't think the signal will degrade much, you'd have to try it out and see for sure though. ABY's are pretty cheap if you shop around, or someone here could probably build you one for a small fee. I'm not an expert on slaving amps, so I'd listen to others on that. Also the VHT/Fryette 2/90/2 is an awesome power amp, I've always wanted to get one and throw a Demeter TGP-3 in front of it... but I don't have the kind of cash it would take to acquire those.

Re: Marshall EL34 50/50 Pros/Cons?!?!?

Posted: Wed Jan 23, 2013 10:56 pm
by JohnnyC
^
“Slaving amps” usually means taking the preamp out(or fx send) and connecting it into the “slave” amp. If this is another head amplifier it can be connected into its fx return
So you connect up the master amp as normal (ie plug guitar into front input) and play as usual. Theres no “front” input connection required on the slave amp
The slave amps “preamp” is theoretically bypassed so youre just using its power amp section.

This is usefull if youre master amp is a channel changer, as any changes just carry forward to the slave amp.
You can also do this with stereo fx (such as delays) (ie normal connection in the master amps fx send/return fx loop, second output from the stereo fx into the slave amps fx return)
And get pingpong delays. You still need 2 separate cabs per amp

anyways i just looked up the manual
http://www.marshallamps.com/downloads/f ... %20hbk.pdf

read the section under 50/50 and rear panel connector jack “14” (using only that connects to both channels for parallel mono operation)
my memory is coming back now...and that should answer your question RE requiring an ABY box

Re: Marshall EL34 50/50 Pros/Cons?!?!?

Posted: Thu Jan 24, 2013 10:08 am
by jwojtysiak
Looking for a more doom/stoner sound so not looking for a super tight bass response. If i can find a VHT or Mesa for around $600-$700 I'm going to go that route, right now I can get a Marshall for $400, so depending on the timing and whats out there, I'll go one way or the other. Thanks a lot for the feedback, I'll let you know when i get the pre amp pedal and can try out the power amp.