General discussion area for tube amps.
Moderators: pompeiisneaks , Colossal
M Fowler
Posts: 14019 Joined: Wed Jan 16, 2008 2:19 am
Location: Walcott ND
1 others liked this
Post
by M Fowler » Sat May 14, 2011 5:08 pm
I got this chassis and cab a while ago and finally finished it up.
A totally different type of amp but reminds me of the low end I get with my JCM800 2204 and I like the preamp bypass for added killer gain. I will record some of my amps after I retire in January and get setup to record so don't ask
Mark
You do not have the required permissions to view the files attached to this post.
Last edited by
M Fowler on Tue Jul 03, 2012 10:21 pm, edited 1 time in total.
xtian
Posts: 7047 Joined: Mon Apr 19, 2010 8:15 pm
Location: Chico, CA
Contact:
Post
by xtian » Sat May 14, 2011 5:19 pm
Beauty!
wsaraceni
Posts: 507 Joined: Fri Apr 14, 2006 5:18 pm
Post
by wsaraceni » Wed Jun 27, 2012 12:55 am
looks like a nice simple build. what are the transformer specs on these? are they 290-0-290 on the PT? thinking about something like this to use up my express PT. i think i've read the OT is something like 4k and much bigger iron so the express OT probably wouldn't work.
M Fowler
Posts: 14019 Joined: Wed Jan 16, 2008 2:19 am
Location: Walcott ND
Post
by M Fowler » Wed Jun 27, 2012 3:20 am
PT 290-0-290
OT 4k 60W
Choke 10H 150mA
Has a switch for 30w class A cathode bias 150R/25W with 220uf/100v bypass cap. Other side of switch is 50w class AB 47k bias pot for -32v
Mark
wsaraceni
Posts: 507 Joined: Fri Apr 14, 2006 5:18 pm
Post
by wsaraceni » Wed Jun 27, 2012 1:39 pm
Nice. What side of the switch do to prefer?
are all of the POTs dual pots with the terminals connected together? what purpose does that serve?
M Fowler
Posts: 14019 Joined: Wed Jan 16, 2008 2:19 am
Location: Walcott ND
Post
by M Fowler » Tue Jul 03, 2012 3:50 am
The Class A gets some great early breakup.
Yes all the pots are dual pots and wired together, not sure why I just followed what Orange does.
You do not have the required permissions to view the files attached to this post.
Kagliostro
Posts: 535 Joined: Wed Dec 30, 2009 12:09 am
Location: Italy
Post
by Kagliostro » Tue Jul 03, 2012 9:49 am
Very Nice Job !
Can you post a link to the schematic ?
K
M Fowler
Posts: 14019 Joined: Wed Jan 16, 2008 2:19 am
Location: Walcott ND
Post
by M Fowler » Tue Jul 03, 2012 8:59 pm
Here is the schematic.
You do not have the required permissions to view the files attached to this post.
M Fowler
Posts: 14019 Joined: Wed Jan 16, 2008 2:19 am
Location: Walcott ND
Post
by M Fowler » Tue Jul 03, 2012 10:23 pm
Here is the layout.
You do not have the required permissions to view the files attached to this post.
amplifiednation
Posts: 2071 Joined: Sun Dec 26, 2010 6:19 pm
Location: Boston
Contact:
Post
by amplifiednation » Thu Jul 05, 2012 9:53 pm
Mark that was a cool build! Was this just resurrected from the dead?
We need a clip forum for members only of all of these creations. I have never played a vintage Orange
Amplified Nation
www.amplifiednation.com
@ampnation
SoundPerf
Posts: 218 Joined: Fri Feb 04, 2011 3:33 am
Location: York, PA USA
Post
by SoundPerf » Thu Jul 05, 2012 10:22 pm
Very cool!! Images logged for future....Thanks!
This looks like it could be a nice affordable project.
Chris
SoundPerf
Posts: 218 Joined: Fri Feb 04, 2011 3:33 am
Location: York, PA USA
Post
by SoundPerf » Thu Jul 05, 2012 10:23 pm
Double post...sorry
Chris
M Fowler
Posts: 14019 Joined: Wed Jan 16, 2008 2:19 am
Location: Walcott ND
Post
by M Fowler » Thu Jul 05, 2012 11:31 pm
I built this amp a while ago but the thread was recently discovered and questions asked so I decided to just post the schematic and layout.
Mark
Reeltarded
Posts: 9964 Joined: Sat Feb 14, 2009 4:38 am
Location: GA USA
Post
by Reeltarded » Fri Jul 06, 2012 12:05 am
I wish the covering was like it looks in the thumbnails, that cheapo looking Gibson stuff like wall paper on an RVT.
I guess tolex is ok too.
Signatures have a 255 character limit that I could abuse, but I am not Cecil B. DeMille.