"Classic" Transformers & Enclosures

A "Classic" tube amplifier (Example) Using all Hammond transformers, chokes, chassis, ventilated cover, bottom plate and rubber feet.

Our "CLASSIC" line of transformers & enclosures. For all you tube lovers of the world!

Link Here

Related web sites for tube & classic heads! Check 'em out but please come back...

-- "CLASSIC" NEWS --

Information on Lloyd Swackhammer's book - Radios of Canada

• A NEW series of replacement - tube Guitar Amp. transformers (Listed July, 2007)
• Single - Ended tube output transformers - Two NEW impedances added & all models improved performance - "1627 - 1642" series - added (Listed Aug., 2005).
• 7 sizes of universal primary, economical, open frame, plate & filament transformers - "260" series - added (Listed Aug., 2005).
• 22 NEW sizes added to our "300" series of universal power transformers (Listed July, 2005).
• Single ended "universal" output transformer series our popular 125SE series has two NEW additions (20 & 25 watt),
  optimized for single ended tube output circuits (Listed March., 2004).
• Constant Voltage Isolation Transformers, worried about voltage regulation? Repair it at the source and regulate/clean/isolate your supply (line) voltage! (Listed March, 2002).
• Line Isolation & Autotransformers, safely run equipment almost anywhere in the world! Great for the bench & check out our slight step down units to keep the stress off those older 110VAC receivers (Listed March, 2002).
• RCA Radiola III-A replacement audio transformer (Listed March, 2002).
• Single ended "universal" output transformer series (3 - 15 watts). Our popular 125 series has a NEW addition, optimized for
  single ended tube output circuits - the 125 SE series (Listed Nov., 2001).
• 5 watt tube driver transformers, 124 series - we have already added 3 parts since their introduction in 2000 (Listed Late 2000)!
• High power, high impedance, single ended output transformer added to our line - our 75 watt, P/N 1642SE (Listed 2000).
• Our "300" series power transformer specs... Our "300" series universal primary - Plate/Filament power transformers.
  Operates anywhere in the world! (Listed 2000).
• Part Number 119DA our response to requests from the "Collins Collectors Association" (an audio matching, 600 ohm to 4/8 ohm, transformer) (Listed 2000).

• In the early 1980's we also produced Hammond R.F. linear amplifiers for Amateur (Ham) Radio use. Naturally tube type, built for continuous duty, powered by Hammond "iron" & housed in Hammond enclosures. We stopped production over 25 years ago. Even now folks are still asking about them (many are still in active use today).Two versions of two different models were produced:
  • The HL-2000 (later became the HL-2000A - link to full data page) using two 3-500Z tubes.
  • The HL-1000 (later became the HL-1000A) using a single 3-500Z tube - designed to be a more economical version of the more powerful HL-2000A.
• Offered with this series of R.F. amplifiers in the 1980's, were high power antenna tuners (the AT-1500) & 2KW low pass R.F. filters (HF-1000LP)...
• In the 1960's we sporadically offered the HL-500 (87K photo), HL-700 and HL-750 linear amplifiers too. They used quad 811-A output tubes. Not only using Hammond "iron", RF chokes and enclosures BUT also using our then available, air variable condensers (PDF - 239K). Very little data on these amplifier models has survived...
• Looking for specs. on one of our older transformers?

Or interested in a travel back in time, probably at the peak of the radio era? Download our 1950's Catalog #65, we even gave transformers their own names!!! Transformer Section (25 pages) of Catalog65.pdf (6.2 MB)

• In the late 1930's we designed audio amplifiers using our transformers & enclosures. Thanks to Bill Crowther (of Winfield, B.C.) for locating these schematics & sending them to us. Interesting to see a note on the 1247 & 1245 diagrams regarding 25 or 60 cycle power use!
  • 7 watt amplifier - PDF file - Diagram 1247 (74K )
  • 15 watt amplifier - PDF file - Diagram 1229B (73K)
  • 60 watt amplifier - PDF file - Diagram 1245 (92K)
• We also made audio amplifiers & battery eliminators (again combining our enclosure & transformer skills) in the 1920's! Check out a few pages from the fascinating Aikenhead's Radio Catalog (1929-1930) (PDF file 934K) - an early Toronto, Ontario distributor of our products.

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URL: http://www.hammondmfg.com