image
Reverb tanks and Bags Foot Pedals Wire-Cable-Heat shrink Capacitors
Jacks-Plugs-Connectors Wire-Cable-Heat shrink Transformers Tubes-Valves
Lamps-Diodes-Channel Switching Tubes-Valves Screws-Nuts-Washers Pots-Knobs
Fuse Holders-Cords-AC Items Pots-Knobs Jacks-Plugs-Connectors Handles-Amp Trim Parts
Handles-Amp Trim Parts Capacitors Lamps-Diodes-Channel Switching Transformers
Tube Sockets Resistors Pots-Knobs Jacks-Plugs-Connectors
Foot Pedals Lamps-Diodes-Channel Switching Switches Tube Sockets
Tools and Batteries Wire-Cable-Heat shrink Transformers Transformers
Jacks-Plugs-Connectors Chassis-Boxes Chassis-Boxes Screws-Nuts-Washers
Capacitors Circuit Board Building parts Jacks-Plugs-Connectors Pots-Knobs
Tools and Batteries Jacks-Plugs-Connectors Pots-Knobs Circuit Board Building parts
Wire-Cable-Heat shrink Jacks-Plugs-Connectors Capacitors Pots-Knobs
Wire-Cable-Heat shrink Misc Hardware-Grommets-Feet-Ring terminals Resistors Jacks-Plugs-Connectors
Switches Switches Fuse Holders-Cords-AC Items Handles-Amp Trim Parts
Lamps-Diodes-Channel Switching Circuit Board Building parts Jacks-Plugs-Connectors Lamps-Diodes-Channel Switching
Bike Light Parts Screws-Nuts-Washers Screws-Nuts-Washers Misc Hardware-Grommets-Feet-Ring terminals
Tube Sockets Tube Sockets Jacks-Plugs-Connectors Tubes-Valves
Lamps-Diodes-Channel Switching Circuit Board Building parts Handles-Amp Trim Parts Jacks-Plugs-Connectors
Capacitors Pots-Knobs Tools and Batteries Tubes-Valves
Tube Sockets Tube Sockets Tools and Batteries Misc Hardware-Grommets-Feet-Ring terminals
Tubes-Valves Pots-Knobs Fuse Holders-Cords-AC Items Tubes-Valves
Fuse Holders-Cords-AC Items Books Pots-Knobs Lamps-Diodes-Channel Switching
Guitar Strings Tube Sockets Resistors Jacks-Plugs-Connectors
Pots-Knobs Fuse Holders-Cords-AC Items Fuse Holders-Cords-AC Items Tools and Batteries
Screws-Nuts-Washers Tube Sockets Misc Hardware-Grommets-Feet-Ring terminals Switches
Transformers Foot Pedals Switches Pots-Knobs
Tube Sockets Switches Resistors Handles-Amp Trim Parts
Transformers Pots-Knobs Bike Light Parts Circuit Board Building parts
Lamps-Diodes-Channel Switching
You can scroll through the images above using the Image scroll controls or you can use the Left and Right arrow keys on your keyboard.

Hello, you are a guest in the Hoffman Amplifiers forum June 19, 2013, 09:44:30 am
Welcome, Guest. Please login or register.

Login with username, password and session length
 
   Home   Help Search Media Login Register  
Hoffman Amplifiers > Amp Stuff > AmpTools/Tech Tips (Moderators: Geezer, tubenit, PRR, sluckey) > Alamo Embassy (2563) Amp Schematic ??
Pages: [1]   Go Down
« previous next »
  Print  
Author Topic: Alamo Embassy (2563) Amp Schematic ??  (Read 806 times)
0 Members and 1 Guest are viewing this topic.
LooseChange
SMG
Level 4
***
Offline Offline

Posts: 3471


Keep it greasy so it goes down easy.


WWW
« on: March 11, 2012, 07:18:49 am »
Small amp with a 5Y3, 6V6, 12AX7 and a 6AV6 (tremolo).
Volume, Tone, Speed and intensity.
10" Speaker.

Thanks!
Logged
Call me Dan
www.fydamps.com
LooseChange
SMG
Level 4
***
Offline Offline

Posts: 3471


Keep it greasy so it goes down easy.


WWW
« Reply #1 on: March 12, 2012, 07:11:38 pm »
Somehow I put this in the wrong place.
Still can't find a schematic. Anyone?
Thanks!
Logged
Call me Dan
www.fydamps.com
Willabe
Level 4
****
Offline Offline

Posts: 2933
« Reply #2 on: March 12, 2012, 07:14:42 pm »
I think Alamo schemos are had to come by.

                   Brad      icon_biggrin
Logged
John
So what's that do?
Level 3
***
Offline Offline

Posts: 863
« Reply #3 on: March 12, 2012, 09:02:12 pm »
LC, I googled last night for a bit, couldn't find nuthin but guys talking about their Alamo and not being able to find a schem. Sorry!
Logged
Tapping into the inner tube.
LooseChange
SMG
Level 4
***
Offline Offline

Posts: 3471


Keep it greasy so it goes down easy.


WWW
« Reply #4 on: March 12, 2012, 09:15:33 pm »
Thanks for looking.
It's a small enough amp that I was able to troubleshoot without issue.
The amp is working really well now.
Logged
Call me Dan
www.fydamps.com
Shrapnel
Level 3
***
Offline Offline

Posts: 539


glowing bottles are kewl


WWW
« Reply #5 on: March 12, 2012, 09:16:01 pm »
I've got like four here, but none for the Embassy. (Capri (2360), Fiesta (1962), Jet (2564), and Montclair)
Logged
-Later!
 -Bill.

"All the great speakers were bad speakers at first" - Ralph Waldo Emerson
LooseChange
SMG
Level 4
***
Offline Offline

Posts: 3471


Keep it greasy so it goes down easy.


WWW
« Reply #6 on: March 12, 2012, 09:31:19 pm »
Any of those amps run the tremolo with a 6au6? I'd like to see that.
Logged
Call me Dan
www.fydamps.com
DummyLoad
amp curmudgeon.
SMG
Level 4
***
Offline Offline

Posts: 2411


I love tube amps
« Reply #7 on: March 13, 2012, 07:06:04 am »
Quote from: LooseChange on March 12, 2012, 09:31:19 pm
Any of those amps run the tremolo with a 6au6? I'd like to see that.


this one runs 6Au6 for trem osc...

good luck with you're quest.

--DL
Logged
www.sotxampco.com
Shrapnel
Level 3
***
Offline Offline

Posts: 539


glowing bottles are kewl


WWW
« Reply #8 on: March 13, 2012, 03:09:20 pm »
Quote from: LooseChange on March 12, 2012, 09:31:19 pm
Any of those amps run the tremolo with a 6au6? I'd like to see that.

Lessee....

Capri... No... 12AU6 input, 50C5 output, 35W4 recto... like a cheap Kay or bargain basement, but has a tranny that isolates it from the mains (and a tap on the secondary HT to run the series heaters)
Fiesta... No... 12AU6 input, 50L6 cathode biased output, 3525? recto... 12AV6 trem... (wiggles 50L6 g1)
Jet... No... 1/2 - 12AX7 input, 6V6 output,  5Y4GT recto... SS reverb, other half 12AX7 & SS trem.
Montclair... No... 12AX7 input split for 2 ch, 12AX7 in a cascode config? on second channel, 7199 PI, 2-6V6PP output... 12AX7 trem on second channel.

<Attached: Montclair schemo that I have... I think there's errors in it too>
* alamo_montclair.pdf (16.87 KB - downloaded 53 times.)
Logged
-Later!
 -Bill.

"All the great speakers were bad speakers at first" - Ralph Waldo Emerson
PRR
Global Moderator
Level 5
******
Offline Offline

Posts: 8593


Maine USA


WWW
« Reply #9 on: March 13, 2012, 10:29:09 pm »
> Montclair... 12AX7 in a cascode config?

No. Both units shorted grid-plate: diodes. Also note DC voltages near zero.

Diode modulator. Trem signal is applied out of phase, no thump, but diodes cut-off and block signal.

Possibly an evasion of Fender's patent. Or "good idea" for thumpless low-level modulation. Must say I've never seen it before.
Logged
Willabe
Level 4
****
Offline Offline

Posts: 2933
« Reply #10 on: March 14, 2012, 12:58:55 am »
Quote from: PRR on March 13, 2012, 10:29:09 pm
> Montclair... 12AX7 in a cascode config?
Must say I've never seen it before.

OK, so please tell us more? Maybe a good thing to add to all us trem guys?


            Brad         think
Logged
Pages: [1]   Go Up
  Print  
« previous next »
Hoffman Amplifiers > Amp Stuff > AmpTools/Tech Tips (Moderators: Geezer, tubenit, PRR, sluckey) > Alamo Embassy (2563) Amp Schematic ??

 
Jump to:  


Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!
This is the Hoffman amplifiers tube amp parts catalog, please choose a link below.
Amp trim/Handles Bike Lighting parts Board Building Parts Guitar Strings/Books
Capacitors Chassis/Boxes Foot Pedals Fuses/Cords/AC
Jacks/Plugs/connectors Pots/Knobs Lamps/Diodes/Channel Switching Misc. Hardware
Resistors Reverb Items Screws/Nuts/Washers Switches
Tools-Batteries Transformers Tubes/Valves Tube Sockets
Wire/Cable Public Parts list Page Search the Hoffman Amps parts catalog Non Stocked Parts
The Tube amp Library of information
 Click the link above for Tube amp info, Schematics, Board building information, Projects, Mods, Transformer diagrams, Photos, Sound clips.
There are hundreds of pages of Tube amp information on my library page.
Check out our huge library of schematics here

click here for more info