Small Amps that melt your face

Fran · Post by **Fran** » Sun Oct 04, 2009 3:35 pm

I'll try to fuck it up do it myself, yes it has the stock speaker in.

Kathie wants me to buy THIS!

chisa · Post by **chisa** » Sun Oct 04, 2009 3:37 pm

try a vintage 30 in there, it is a louder speaker rated at 100db, where as the goldback is rated at 98db (i think)

i don't think revalving and rebiasing will make any difference

Fran · Post by **Fran** » Sun Oct 04, 2009 3:40 pm

chisa wrote:i don't think revalving and rebiasing will make any difference

Are you calling Doog a n00b?
Im getting confused now.

chisa · Post by **chisa** » Sun Oct 04, 2009 3:42 pm

Fran wrote:
chisa wrote:i don't think revalving and rebiasing will make any difference
Are you calling Doog a n00b?
Im getting confused now.

it may work, but i think it will just change the gain structure rather than make it produce more volume.

chisa · Post by **chisa** » Sun Oct 04, 2009 3:45 pm

something like this should be louder

http://cgi.ebay.co.uk/LANEY-LC50-%28lc- ... dZViewItem

euan · Post by **euan** » Sun Oct 04, 2009 4:50 pm

I'm pretty sure it is the efficiency of the speaker that makes it louder not the rating.

Thom · Post by **Thom** » Sun Oct 04, 2009 4:56 pm

euan wrote:I'm pretty sure it is the efficiency of the speaker that makes it louder not the rating.

You sir, are correct.

euan · Post by **euan** » Sun Oct 04, 2009 5:06 pm

My mate Zambo who supplies pretty much all the decent nights in Glasgow with PA is planning to build a Cabornfibre boxed PA with Neodyne magent speakers. It will be crazy light and efficent and most likely loud too. The idea is to build a PA that can have smaller amps so that one person can load in the entire PA and amp rack themselves. Currently it takes three people to lift the amp rack.

Post by **Doog** » Sun Oct 04, 2009 5:13 pm

Fran wrote:
Doog wrote:
Fran wrote:It was at head height last night, the stage was so small i played on the floor in front. I always do elevate it as its pretty much useless on the floor.
That is an interesting solution Doog, never thought of that. A full valve change and bias tweak, hmm, out of my depth there. I suppose that will knock me back Â£100.
It's a Marshall DSL401 combo yeah? Becaaaaause, the bias tweak on the TSL/DSLs is a piece of piss, mate- seriously. All you need is a multimeter and a small screwdriver.
yeah, its a 401. Last time i messed with it i knackered a few valves.
Sooo... what/how many of them valves do i need Doog? You can guide me through this and if it all goes wrong its YOUR fault

You'll actually need E84Ls, I forgot that model ran on EL84s rather than EL34s. http://www.watfordvalves.com/product_detail.asp?id=878 pour examplÃ©.

Mike will be able to guide you through biasing the amp I think, he must have tweaked the bias when he owned the same model.

Post by **Doog** » Sun Oct 04, 2009 5:23 pm

chisa wrote:i don't think revalving and rebiasing will make any difference

Eurotubes wrote: E34L
Factory description: Gold plated control grid for improved fidelity. Special plate alloy improves plate dissipation as compared to the standard EL34 resulting in stable performance at higher power levels.

My observation: This tube has about 20% more head room than the standard EL34 and it also has a deeper, tighter low end. The E34L is also a bit punchier and more aggressive than the standard EL34 which makes it a Great tube for Matchless, Bogner, Carvin, Peavey and all Marshall amps. I have them in one of my old SUNN heads. Incredible sound! The E34L and the JJ KT77 are the only EL34 type tubes that I have found that will stand up to the 700 plus plate volts found in the Musicman HD 130 amps.

chisa · Post by **chisa** » Sun Oct 04, 2009 7:10 pm

Doog wrote:
chisa wrote:i don't think revalving and rebiasing will make any difference

Eurotubes wrote: E34L
Factory description: Gold plated control grid for improved fidelity. Special plate alloy improves plate dissipation as compared to the standard EL34 resulting in stable performance at higher power levels.

My observation: This tube has about 20% more head room than the standard EL34 and it also has a deeper, tighter low end. The E34L is also a bit punchier and more aggressive than the standard EL34 which makes it a Great tube for Matchless, Bogner, Carvin, Peavey and all Marshall amps. I have them in one of my old SUNN heads. Incredible sound! The E34L and the JJ KT77 are the only EL34 type tubes that I have found that will stand up to the 700 plus plate volts found in the Musicman HD 130 amps.

that just says that it has more headroom, not that it is louder. i dunno though. as for the speaker the efficiency is measured in dbs as i said above.

Post by **Doog** » Sun Oct 04, 2009 8:13 pm

Well, what do you describe "headroom" as being then?

chisa · Post by **chisa** » Sun Oct 04, 2009 8:25 pm

Doog wrote:Well, what do you describe "headroom" as being then?

generally it is used to describe how much volume you can get out of an amp before it distorts.

Chicago Mike · Post by **Chicago Mike** » Sun Oct 04, 2009 9:19 pm

You guys got Mesa Boogie MK III's out there? Heads are pretty affordable and the comobos aren't bad either and that shit will peel the pain off the walls for 1x12 combo that weights the same as a couple twins on top of each other...lol.

euan · Post by **euan** » Sun Oct 04, 2009 9:28 pm

American amps have never been and never will be truly affordable or wide spread here.

Chicago Mike · Post by **Chicago Mike** » Sun Oct 04, 2009 9:30 pm

which is weird b/c you can get marshalls pretty dirt cheap here on the used/craigslist market.

Post by **Mike** » Sun Oct 04, 2009 9:45 pm

DSL401 uses EL84s. Don't put EL34s in it please. Badness.

Post by **Doog** » Sun Oct 04, 2009 9:50 pm

Doog wrote:
You'll actually need E84Ls, I forgot that model ran on EL84s rather than EL34s. http://www.watfordvalves.com/product_detail.asp?id=878 pour examplÃ©.

Post by **Mike** » Sun Oct 04, 2009 9:51 pm

Drunk

Fran · Post by **Fran** » Sun Oct 04, 2009 10:00 pm

Thanks for all the help and opinions. I'd like to fix the Marshall up but dont fancy a gamble with my money, if it is'nt much different i'd rather spend the money (not much of it) elsewhere.
For now i'm going to grin and bare it and make a decision later. I had looked at a few valvestate type combos made by Laney, also saw a cheap Peavey all valve 100w combo but im not sure what to do.