Blackstar Artisan 15 mods

[jamcginley62]

Hey guys! So I recently got a Blackstar Artisan 15 and there are a few modifications I would like to make. First off, it is overly bright and harsh. I would like to make it more useable because it can be pretty ice picky. The next thing is that it really needs a master volume. I'm comfortable doing the modifications but I definitely need some help! If some of you more experienced amp guys could help me out that would be awesome. Thanks!

[shooter]

without a schematic I'm seeing a wonderful fall day, birds, deer..........

[SILVERGUN]

Looks like a cool little amp.
Does it sound like this?:
https://www.youtube.com/watch?v=KLD308-dwUw

Which speaker is in yours?

[SILVERGUN]

without a schematic I'm seeing a wonderful fall day, birds, deer..........

Some guy named H. Mitcheltree posted this on the internet so it must be accurate.
I'm sure he would want us to have it for reference.

Google found this pic for me.

[shooter]

Nice sounding find!!!
beautiful build!
even with small bottles

EDIT!
I just looked at the schematic,  STAC 

[Ritchie200]

Submarine Tactical Acoustic Communication?

Jim

[shooter]

SG skool'd me!
I believe it's South Texas Amp Company

[jjasilli]

All the coupling caps are quite small.  Maybe try larger one's starting after the first (input) stages. Maybe try disconnecting the vol pot bypass caps. 

[shooter]

Finally caught note on schemo 

[DummyLoad]

STAC = S#i^^y  Tube Amp Constructors. if y'all must know... :p

that schema i believe is correct. so much for folks ack. copyright notices! whee! they are P2P made in south korea.

where it all started: we had a problem with an artisan 30 - it had EL84s went into runaway. too much B+. there's a schematic out in the wild i compiled for that model as well.

IIRC, amp sounded best in 15W mode and with the pentode channel, however is/was bit on the harsh side.

FWIW,  published those schema because balckstar wouldn't pass along a schematic for the Artisan 30, citing dealer network, qualified service personnel, yada, yada, yada...


--pete

[SILVERGUN]

so much for folks ack. copyright notices! whee!

Obviously my bad...Google made it too easy. Can I blame them?

[shooter]

STAC =

 
When I looked at the schematic, thought you were also the builder, couldn't figure out why you used small bottles 

[DummyLoad]

so much for folks ack. copyright notices! whee!

Obviously my bad...Google made it too easy. Can I blame them?

honestly, i don't care - was just poking for fun. 


--pete

[DummyLoad]

STAC =

 

When I looked at the schematic, thought you were also the builder,

in this case just the publisher.

...couldn't figure out why you used small bottles

i do like the EL86/6CW5 and 6CM6.

--pete

[SILVERGUN]

so much for folks ack. copyright notices! whee!

Obviously my bad...Google made it too easy. Can I blame them?

honestly, i don't care - was just poking for fun. 


--pete

I was gonna blame shooter if you weren't gonna let me get away with blaming Google. Next in line was TAG, then some guy named GVC66, maybe elektrotanya.com

I might be a shit stirrer but I'm no feather ruff'ler.

[SILVERGUN]

IIRC, amp sounded best in 15W mode

Not surprising since this looks like a preset crossline MV and not an actual "power" control

[jjasilli]

Mostly: 

[shooter]

but, um, the schematic is gone

Some guy ..

 

[jjasilli]

Good point - didn't notice that

[DummyLoad]

wonder why they deleted schema. did thread author or mod delete it? 

try tacking in a 10nF to 15nF in parallel with the 4n7 located between the 1M and 15K resistors.   

--pete

[shooter]

wonder why

I thing someone had a pang of guilt 
naw, that probably isn't correct 

[SILVERGUN]

wonder why

I thing someone had a pang of guilt 
naw, that probably isn't correct 

It was my initial reaction.
I figured Google would work the same for everyone so I wouldn't have to be the guy to piss off that big primate.
Didn't want to make anymore off topic, thread hijacking posts. 
...ooops, just did it again.