Terry Dobbs
  • Male
  • Columbus, IN
  • United States
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Terry Dobbs's Friends

  • Joseph Santos
  • Fernieite
  • David Jones
  • Art Pollock

Terry Dobbs's Discussions

Airline 9023A

Started May 25, 2012 0 Replies

Airline 9023AContinue

National Aztec, Stagestar Schematic

Started May 25, 2012 0 Replies

National Aztec, Stagestar SchematicContinue

National Deluxe Amp

Started May 25, 2012 0 Replies

National Deluxe AmpContinue

Late 30's National Dobro amp

Started May 25, 2012 0 Replies

Late 30's National Dobro ampContinue


Terry Dobbs's Page

Latest Activity

Terry Dobbs replied to mark enger's discussion New to forum
"Hi Mark,  The New Russian 6973's sonically are not as good as old stock. The 6CZ5 can be a good sounding substitute and are still relatively inexpensive. The 6ZC5 doesn't sound exactly like the 6973. They have a bit less headroom and…"
Apr 16
Terry Dobbs and Joseph Santos are now friends
Dec 12, 2013
Terry Dobbs replied to otis r emery's discussion gibbs reverb codes
"I hope your wife's health gets better Otis. Normally turn around time is 2 - 2 1/2 weeks. Email me at terry@valcoamp.com and we can talk more, all the best,  Terry"
Oct 21, 2013
Terry Dobbs and Fernieite are now friends
Oct 2, 2013
Terry Dobbs commented on Joe Lavallie's photo


"Hi Joe, could you post a photo of the back of this amp too if possible? Thanks so much,  Terry"
Sep 15, 2013
Terry Dobbs replied to Noah Miller's discussion One of a kind? 1963 Gretsch 6157 "Electromatic" with reverb
"Yeah, I have one myself. That is the Gretsch labeled version of the Supro 1605R amp. Same amp and circuit just with Gretsch appointments. I agree that it is one of the coolest sounding little Valco amps. Basically it is a Supro Supreme amp with…"
Nov 6, 2012
Terry Dobbs commented on Dan Burke's photo


"Thank you for sharing your drawing and looking forward to the rest, be safe traveling, Terry"
Sep 2, 2012
Terry Dobbs posted discussions
May 25, 2012
Terry Dobbs replied to Terry Dobbs's discussion National 1947 with Loctal tubes
"National 1947 with Loctal tubes"
May 25, 2012
Terry Dobbs replied to Terry Dobbs's discussion Supro 1600B Schematic
"Supro 1600B Schematic"
May 25, 2012
Terry Dobbs replied to Terry Dobbs's discussion 3 input Valco "Champ" type schematic
"3 input Valco "Champ" type schematic"
May 25, 2012
Terry Dobbs replied to Terry Dobbs's discussion Supro 1605R Amp
"Supro 1605R and Gretsch Electromatic schematic"
May 25, 2012
Terry Dobbs replied to Terry Dobbs's discussion Supro Comet amp
"I highlighted this one so folks will remember the shorting tab on the Microphone input is not to be grounded as this schematic shows"
May 25, 2012
Terry Dobbs replied to Steve Cochrane's discussion Valco model 1212
"The National 1212 was basically a Supro 1600 Supreme circuit with a few differences including a 6sn7 phase inverter tube, a different circuit for the screen grid of the 6J7 and a 12" 8 ohm field coil Rola instead of a 10" 4 ohm field coil…"
Dec 16, 2011
Terry Dobbs replied to Dustin J Hamman's discussion looking to I.D. this Supro
"The serial number indicates your Supro was made in early 1950, you have a model 1600 Supro Supreme. The earliest Supreme amps made after WW2 used a 10" Jensen 8 ohm permanent magnet speaker and quickly went to a 10" 4 ohm field coil Rola…"
Dec 16, 2011
Terry Dobbs replied to JT Burke's discussion Help in identifying my amp....
"That is indeed a Valco made amp, what was called a "jobber" amp for another company or store to sell. Conan is right that it is the same amp as the early Supro Super model 1606. A nice little amp, not very loud but good tone and fun to…"
Dec 16, 2011

Profile Information

Do you own a Valco amp? If so, what model(s)?
All of them!
What is your favorite guitar?
1972 Les Paul with PAFs

Comment Wall (1 comment)

At 10:47am on June 14, 2011, David Jones said…


     Thank you so much for your help! I will employ all suggestions. I'm blessed to be able to ask you for help, and I learn something from you every time I get in a jam. In the end, I hope I can tell you the one thing that made this noisy amp problem so bad. Until then, I have no one to blame but myself! Talk to you soon.

Dave Jones

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My Ebay Listings

Check out my Valco auctions on Ebay. Don't miss a chance to get some well-serviced amps and rare Valco parts. My seller name is muddobber5.

History of Valco

The Valco company has its roots in the National String Instrument Corporation, which was founded in 1927. The company is famous as the first manufacturer of resonator guitars, which were hugely popular in blues and (a bit later) bluegrass music. National merged with the Dobro company, another maker of resonator guitars, around 1932 to form the National Dobro Corporation. The company began producing electric instruments in the 1930s that included electric guitars, lap steels, mandolins and amplifiers. These pre-war electric instruments are fairly rare today, though the lap steels pop up with some regularity. The archtop bodies for the guitars were sourced from Regal and then from Kay, but the electronics were developed and manufactured by National-Dobro. The Supro brand name was introduced in the mid-‘30s for cheaper electric instruments.

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