What 100w Marshalls have the option to drop down to 50w? I think thats what I need. Any suggestions would be appreciated. Thanks
YJM100 / AFD100 I could be wrong, but I think one of the amps from the TSL series has a half power option as well. Other than that, nothing is really coming to mind (which means there's another obvious choice i'm not thinking of at the moment).
Just out of curiosity but, why do you need it? If it’s for volume reduction forget it, the difference isn’t noticeable. Marshall also has the things set where it uses triode rather than pentode for the reduction this, in my opinion alters the sound in a bad way. If you’re set on it though, the new DSL does it, the jubilee reissue, and I believe all 900’s. As the guys have said, you can pull a pair of tubes from any Marshall and reduce to 50. Also, as cross mentioned there’s the AFD and YJM which have the EPA control and that allows you to adjust the wattage infinitely from .01 to 100.
I'm not a fan of triode operation in guitar amps either. And as Phil said doesn't really drop the volume to levels that would justify it. The 2555x Jubilee reissue has the half power switch, and is a great amp. If your looking for volume reduction this amp sounds very good at lower volumes, and I find the half power switch is unneeded for getting a big tone at reduced volume. If you can find one to test drive it may be just what you're looking for.
The 1/2 power or even 1/4 power switch does very little to drop the sound. It does help it break up a little faster, but the amp still wants to be turned up a bit. What you really want is a "Amp Power Attenuator". It's like the ultimate master volume, you can run the amp at any setting you want to get that "oh so sweet sound" then set the sound level to mouse fart quiet if you like. They are around $200 for a good one. Check 'em out!
What you need is the JVM. I say that because I'm assuming that you want volume reduction. 100 vs 50 watts. half power vs full power, pentode vs triode, is no significant volume reduction, but the JVM probably has one of the best master volumes you'll find on any 100w amp anywhere.
Pulling power tubes is a very poor way...( the worst method ever) Watts does not = loudness... Reducing the number of speakers is a better way...reducing the efficiency of the speaker is a better method. The most successful way: is to control loudness AT the speaker. It is better to use an 18 watt amp wide open....with 1 or 2 speakers... Then to use a 100 watt amp and struggle with reducing the loudness of a 4X12 cabinet. SEE the problem is: That you don't need a 100 watt amp...at all. You are just too obsessed with high power...that you will never need. MOST of you guys: Would sound waaaaaaaay better with an 18 watt amp. And just forget ALL the power reduction gimmicks. Play the amp wide open, and choose the RIGHT amp for the venue.
Watts does not = loudness. And this is where your assumption causes problems. Don't expect 50 watts to be 1/2 as loud as 100 watts. Cause it will not be... What you will find is: 50 watts (thru the same speaker) will be just as loud as 100 watts. It's the speakers, not the wattage that makes the amp loud. "...drop down to 50w? I think thats what I need...." You are basing this on an assumption...that is incorrect.
Some of that is true, and some of that is pure nonsense. Your posts are like a broken record. You just repeat the same shit over and over and over no matter what the question is. Probably no one really needs a 100 watt amp. But they do have a sound and character, even when turned down a little, that is better for many people than a little amp cranked to within an inch of it's life. It's called headroom. It's a real thing, and it really matters.
Silver jubilee and 900 series has half power switch. Anyone calling himself a Tech should be able to implement it on pretty much any standard tube amp j
No you wont fry your amp. The AC current consumption goes down, as does the plate dissipation. The plate voltage does go up a bit due to the higher reflected impedance by the output transformer, but that's no problem with EL34. Using EL34 at 26mA bias, power goes down to 55%. You might even try a lower bias.
I would think if you are trying to have lower volume a kemper would be a better solution. I had a JMD 50w and it was quite good and versatile in any venue or room.
What is it you want? You say a 100 watt amp w 50 watt switch.... because...? Channel switching? No? Jubilee is a nice amp. Also has a shared gain which can be a pain depending. I know, I have 2. 6100 series has 3 channels and full half and quarter power settings. What part do you really need? The ability to drop volume cause it won't do that much. TSL has VPR to approximate 25 watt setting. Maybe you find you need 50 watt with 25 watt setting. I dunno. More info?
