The Amp Garage

Has anyone got a schematic for this bass preamp?
And if someone has built a clone and has drawn layouts etc. I would be VERY interested.

Thanks!

rp wrote:
I'll see your Camel and raise you a Caravan, In the Land of Grey & Pink. I was listening to this last night. New to me as I normally run away from things tagged prog but this isn't prog in my book, just good crazy British rock, wish I'd found it much sooner.

Thanks! I'll have to look for that!

Camel - Mirage.

Deep Purple - Spanish Archer

Blackburn wrote:
To hell with headroom!!!

Can I use this as a signature?

Hi!

I recommend you to connect pot wipers to grid stop resistors.
Other than that, schematic seems to be correct.

johndandry wrote:Would a alpha mini 250k pot be too small for the cut control?

It's fine, I'm using one in my AC15 style amp.

Thanks!

I will give it a go !

Yeah, I know it will never sound just like RM.
What I'm looking for is the midrange/upper midrange honk that good treble boosters produce.

Maybe I should have been more specific...

Thanks for ideas!

I compared this boost-circuit and a rangemaster clone. Rangemaster sounds fatter.
Then I increased plate bypass cap to 2,2nF. That fattens up tone but it's still not enough "middy"...

Hi! I have an amp which has one unused triode. I'm going to use it as a treble booster. What would be the best way to make it sound like rangemaster in front of amp? At the moment it has 68k + 68k at plate (split load, output is taken between those resistors), 6,8k / 0.22uF at cathode and 1000pF pla...

I had a same kind of swirly overtone in my 18 watt TMB - amp.
I got rid of it by installing a snubber circuit in OT primary. No loss of highs, only that swirly "zing" was gone.
Here's the link: http://www.guitarplayer.com/article/smo ... -ride/5505

Hi! I built an Airbrake clone without rheostat and it sounds pretty good. Only last two clicks starts to bring some "fizziness" to the sound. Does anyone else have same problem? I read somewhere that someone put a zobel filter to his Airbrake to tame fizziness. Has anyone tried a cut control ála Vox?