Transformers & Chokes

• Replacements for Fender Amps
• Designed for drop in replacement of original units.
• Physically, parts were designed to look similar to original factory units (where possible).
• Material used & design specs. were kept as close as possible to the original part to preserve the stock "tone".

• Designed for drop in replacement of original units.
• Physically, parts were designed to look similar to original factory units (where possible).
• Material used & design specs. were kept as close as possible to the original part to preserve the stock "tone".
• See P-T290-FENDER-120-UP for upgraded 120 V transformers, P-T290-FENDER-240 for 240 V transformers

Warning: Not all amplifier models of the same name use the same transformer model.

Features

• Economical "open bracket" - channel mount.
• Tolerance of 15% on both inductance & resistance.
• Inductances measured at rated D.C.

• Vertical Mount. For Horizontal Mount, see P-T263-Z
• Primary 115 VAC, 60 Hz. - except as noted
• Enclosed, 4 hole, chassis mount.
• Minimum 6" long leads.
• Units can be run full wave bridge or full wave C.T.
• Class A insulation (105 degrees C).
• Hi-Pot test of 2,000V RMS.
• Conservative designs - CSA certified (209651).

Replacement for Fender Bandmaster, Dual Showman, Pro Reverb, Twin Super Equivalent to Manufacturer part number 125C1A & 022699 Specifications:

• Inductance ± 15%: 4 H
• D.C. Current: 90 mA

Features:

• Designed for drop in replacement of original units.
• Physically, parts were designed to look similar to original factory units (where possible).
• Inductances measured at rated D.C. current.
• Material used & design specs.

Replacement for Fender Deluxe, Deluxe Reverb, Vibrolux, Vibrolux Reverb Equivalent to Manufacturer part number 125C3A & 022707 Specifications: Inductance ± 15% 4 H D.C. Current 50 mA Features:

• Designed for drop in replacement of original units.
• Physically, parts were designed to look similar to original factory units (where possible).
• Inductances measured at rated D.C. current.
• Material used & design specs. were kept as close as possible to the original part to preserve the stock "tone".
• Units are vacuum impregnated with polyurethane varnish for quiet and long life operation.

• Open style, chassis mount transformers with a 115V 60Hz or 117 50/60Hz primary and a 6.3V center tapped secondary.

• Replacements for Marshall Amps
• Designed for drop in replacement of original units.
• Physically, parts were designed to look similar to original factory units (where possible).
• Material used & design specs. were kept as close as possible to the original part to preserve the stock "tone".

Features:

• Designed for drop in replacement of original units.
• Physically, parts were designed to look similar to original factory units (where possible).
• Inductances measured at rated D.C. current.
• Material used & design specs. were kept as close as possible to the original part to preserve the stock "tone".
• Units are vacuum impregnated with polyurethane varnish for quiet and long life operation.

• Designed for general purpose or replacement use in push-pull tube output circuits. (For single ended use, see our 125 SE series - optimized for single ended tube output circuits).
• Frequency response: 150 Hz. - 15 Khz (± 1db max. ref. 1 Khz).
• Open style with minimum 5" long primary leads, secondary solder lugs for convenient secondary connections.
• Tables provided with transformer listing 90 pre-calculated impedance ratios.

• Designed for general purpose or replacement use (not Hi-Fi), in single ended, tube output circuits.
• Frequency response: 100 Hz. - 15 Khz (± 1db max. - ref. 1 Khz). (For full frequency response (20 Hz. to 20 Khz.) - see P-T1627SE).
• For push-pull output use, see P-T125A - optimized for push-pull tube output circuits.
• Open style with minimum 12" long primary & secondary leads leads.
• All sizes use butt stacked cores (using 29M6 steel) with an air gap, to reduce D.C. core saturation.
• Primary impedance range from 2,500 to 10,000 Ohms.
• Secondary impedance range from 4 to 32 Ohms.

Part No.
Audio Power
Max D.C. Bias
Dimensions (Inches)


A
B
C
D
E
G Mtg.

• Primary 115 VAC, 60 Hz.
• Designed for small power or bias supplies, test equipment, preamps etc.
• Models P-T261C6, P-T261E6, and P-T261G6 can also be used with full wave C.T. rectifiers.
• Economical , two hole, channel bracket, chassis mount.
• Minimum 5" long leads.
• Convenient 6.3 filament/auxiliary winding.

• Designed for push-pull tube output circuits.
• Enclosed (shielded), 4 slot, above chassis Type 'X' mounting.
• Frequency response 30 Hz. to 30 Khz. at full rated power (± 1 db max. - ref.

• Replacements for Marshall amps
• Designed for drop in replacement of original units.
• Physically, parts were designed to look similar to original factory units (where possible).
• Material used & design specs. were kept as close as possible to the original part to preserve the stock "tone".

• Enclosed, 4-hole mount chokes
• Tolerance of 15% on both inductance & resistance.
• Inductances measured at rated D.C. current.
• Minimum 8" long leads.
• Units will exhibit less inductance at slightly higher currents or more at lower currents.
• Perfect for high voltage power supply filtering, case matches power transformers & tube audio output transformers.
• Units are vacuum impregnated with polyurethane varnish for quiet and long life operation.
• For more sizes and voltages (open - bracket mount type) - see P-T154-P-T156-X
• Operating temperature range is -40C to 85C

• Primary: Universal - 100, 110, 120, 200, 220,230, 240 VAC 50/60 Hz.
  
  • NOTE: units are designed to operate with BOTH primary windings engaged.
  • See primary wiring information under resources.
• Bias Tap: 50 VAC tap from high voltage secondary C.T. (except part number P-T379WX - uses a separate 60VAC 0.2 Amp winding).
• Highpot tested: 2,000 VAC
• Faraday Copper Primary Shield: Our electrostatic shield reduces the capacitive coupling from the primary - greatly attenuating higher frequency current coupling to the secondaries (shield is internally grounded to the end bell).
• Windings: Concentric wound for low stray field and low noise.
• Models: This series is an upgrade from our P-T263-X range of units PLUS 2 models designed specifically for 300B tubes (Part Number P-T300BX) and 2A3 tubes (Part Number P-T302AX).
• Finish: Black powder paint to match our P-T1650X series of output transformers Units can be run full wave bridge or full wave C.T.
• Conservative designs - CSA certified (209651).

• Open style, chassis mount transformers with a 115V 60Hz primary and a 5V center tapped secondary.

Developed in response to requests from the Collins Collectors Association"this is a matching audio transformer for older equipment with 600 ohm audio outputdriving modern speakers. Or for "classic" high impedance speakers used with newer equipmentsimply swap primary for secondary (ie...4 or 8 ohm input and 600 ohms out). Key Features Isolation unit: (i.e.

• Designed for drop in replacement of original units.
• Physically, parts were designed to look similar to original factory units (where possible).
• Material used & design specs. were kept as close as possible to the original part to preserve the stock "tone".
• See P-T290-FENDER-120 for 120 V transformers, P-T290-Fender-120-UP for upgraded 120 V transformers

Warning: Not all amplifier models of the same name use the same transformer model.

Developed in response to requests from RCA Radiola III-A collectors. The original transformers are usually found with open" windings due to the fine wire and high turns usedcoupled with age. This is a universal replacement type - it will replace any of the three audio transformers used (1st audio driver2nd audio-phase splitter stage or output transformer)by correctly connectiong the 5 lugs. A pin out and connection diagram is included. The cases from the old transformer will fit this new unit. The terminal board is a duplicate of the original.
Key Features

• Primary: 4000 turns, #41 wire (lugs 4 & 2)
• Secondary: 12000 turns C.T., #41 wire (lugs 5 & 1lug 3 is C.T. connection)
• Termination: Solder lugs on a 1 3/4" x 1" terminal board with 4-5" connecting leads
• Size: 1-7/8" long x 1-11/16" wide x 1-3/8" deep
• Lamination Core Size: 5/8" x 1/2"
• Weight: 7 oz.

• Open style, chassis mount transformers with a 115V 60Hz primary and a 2.5V center tapped secondary.

• Designed for push-pull tube output circuits.
• Enclosed (shielded), 4 slot, above chassis Type 'X' mounting.
• Frequency response 30 Hz. to 30 Khz. at full rated power (± 1 db max. - ref.

• Designed for drop in replacement of original units. Upgraded units with variable voltage.
• Physically, parts were designed to look similar to original factory units (where possible).
• Material used & design specs. were kept as close as possible to the original part to preserve the stock "tone".
• See P-T290-FENDER-120 for 120 V basic transformers, P-T290-FENDER-240 for 240 V transformers

Warning: Not all amplifier models of the same name use the same transformer model.

Open style, chassis mount transformers with a 115V 60Hz primary and a 12V center tapped secondary.