Another noob post

Synergy/MTS Forum

Help Support Synergy/MTS Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

winfield1980

New member
Joined
May 27, 2006
Messages
2
Reaction score
0
So I've got my randall RM100M about 6 weeks ago. I'm getting a touch confused with all the things necessary to make a tube amp run at its best.

A few things in particular concern me:

The power section is run by 4 6v6's, I want the amp to break up a little bit earlier (as well as save 2 power tubes). Is there a specific pairing I need to pull out? like 1 and 4 or 2 and 3 or will any 2 suffice. Wattage reduced to 50w. I plan on running this with only 2 power tubes 90% of the time. (any long term problems?)

Now, having pulled out 2 tubes and running at 50w which attenuator should I buy?

https://weberspeakerscom.secure.powweb.com/weber/lpld.htm
https://weberspeakerscom.secure.powweb.com/weber/minimass.htm
https://weberspeakerscom.secure.powweb.com/weber/hpld.htm

Or would it be a better idea to buy a bigger attenuator?

Lots of money spent so lots of questions. I've oredered this http://www.amazon.com/gp/product/087930863X/qid=1148644363/sr=2-2/ref=pd_bbs_b_2_2/102-2970316-1240940?s=books&v=glance&n=283155 as a reference but I'd like to hear your thoughts as well.

Thanks for reading such a lengthy post
 
I believe you can pull the inner 2 tubes or the outer 2, but NOT one of each. Remember to cut the speaker impedence load in half when you do this. For example, if you normally have the switch set to 16 ohms, you need to switch it to 8 ohms.

I used to have a Weber Mass on my 100Watt Mesa DC-10. It worked pretty good. It did compress the sound quite a bit, though.

Be sure to get the 100W Mass even if you plan to run your amp at 50W. It will still work the same. However, if you got a 50W Mass, you could never use it on a 100W amp.
 
Hello to one newbie from another. :D
I used to use a Hotplate with my DSL100 and didn't really prefer the tones I got from it. Contrary to what some people find, it affected my tone enough that I didn't like it at all. I ended up selling it(the Hotplate).
What I would do, and probably will do myself as I have 6L6's in my RM100, is get some E34Ls. Maybe some GT's or JJ's. They seem to be a bit more aggressive than EL34s are.
Good luck with whatever you decide to do. :)
 
I'll play ned here and say that you can also run JJ 6V6 tubes. 2 JJ 6V6's will drop your power down to 20-25 watts and they are much cheaper than yellow jackets. Just make sure you get JJ's as they are the only 6V6 tube that can handle the higher plate voltages of these amps.

Did I leave anything out ned?
 
Other than bias between .18 - .26 and your good to go.
 
thatnks guys, bought a 3 pairs of jj 6v6's and changed the bias. I also did buy a weber mass as well for my other amps but I've tried it with the RM100 with all 4 6l6's and it works a little bit better. But still much more convenient with the 2 6v6's.
 
1/2 is actually 6dB. I agree that it is not that big of a difference if the audience you play too is in a small room. However if you gig out and the sound equipment is sub-par at the facility (bar/club) then 6dB makes a big difference (50W to 100W) or (100W to 200W).

FM
 
Top