Transformers & Chokes

Capacity: 500 VA
Dimensions: 9" long by 6" wide by 4" height
Features:

• Primary 120VAC, 50/60 Hz., Secondary 240VAC.
• Provides circuit isolation.
• Toroidal transformer for high isolation, low noise, light weight cool operation and low profile.
• 50 or 60 Hz.

Dual 117/234 VAC primary, 50/60 Hz. operation. 80 V series, 40 V parallel secondary.

Capacity: 500VA Features:

• Single winding does not provide isolation, for use where equipment is already isolated and only voltage change is required.
• World wide applications, 50 or 60 Hz.

• Over designed for single ended tube output circuits (triode, tetrode or pentode tubes).
• Enclosed (shielded), 4 slot, above chassis Type 'X' mounting.
• Frequency response at least 20 Hz. to 20 Khz. at full rated power (± 1 db max. ref.

Deep-drawn steel case with tin plated finish, with two convenient 6-32 mounting studs with mounting hardware. Sealed case and wax potted core internally for stable characteristics and long life. Wide frequency response +/- 0.5 db max. from 20 Hz. to 20 Khz. (except units over 5K ohms impedance, may be down 1 db @ 20 Khz.) Insertion loss of apx. 1 db.

Great for upgrading later issue Marshall™ amps. Gives great classic sound.
Good replacement for JMP and JCM 800s. for EL34!

Deep-drawn steel case with tin plated finish, with two convenient 6-32 mounting studs with hardware. Includes wire leads (minimum length of 4"). Frequency response +/- 0.5 db max. from 50 Hz. to 15 Khz. Insertion loss of apx. 1 db. Maximum power level +15 dbm. (except 841A, 842A & 844A which are +20 dbm) with specified characteristics, or higher levels with reduced low frequency performance.

Genuine Marshall™ output transformer for JTM45.

Dual 117/234 VAC primary, 50/60 Hz. operation. 48 V series, 24 V parallel 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.

• 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".

• 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.

Genuine Marshall™ 50 watt power transformer for JCM900.

Genuine Marshall™ 100 watt output transformer for JCM900 and JCM2000.

• 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.

Audio watts: 4
Impedance: 5k ohms
D.C. Resistance: 178 ohms
Inductance: 44 henries
Rated D.C. Bias Current: 30 mA
Features:

• Designed for driver use ONLY in single ended tube output amplifiers. These units replace coupling capacitor circuits for improved sound.
• Closed style with minimum 8" long leads.
• All models use bifilar wound windings for exceptional coupling and bandwidth.
• Minimum frequency response 20 Hz. - 20 Khz (± 1db max. ref. 1 Khz.).
• The core is gapped to support the specified D.C.

• Primary 115VAC, 50 / 60 Hz., Secondary 115VAC
• Provides complete circuit isolation.
• Electrostatic shield between primary & secondary to greatly attenuate surges and noise.
• Hi-pot tested to 2 KV RMS.
• Circuit breaker in primary.
• Standard 3-wire, grounded plug & receptacle.
• Input (primary) connected to 5 foot long cord & standard North American plug (NEMA 5-15P).
• Output (secondary) connected to 1 foot long "pig tail" cord, 3-wire, standard North American grounded receptacle (NEMA 5-15R).
• North American Mark of Safety - C UL & UL listed (File #E211544)
• Indoor use only
• Remember - These units do NOT convert line frequency

• Primary 115 VAC, 50 / 60 Hz.
• At 2,000 VAC and above, secondary leads are through rubber bushings
• Units can be run full wave bridge or full wave C.T.
• V.A. is a C.C.S. rating
• Current ratings are CCS (Continuous Commercial Service) & ICAS ratings (Intermittent Commercial or Amateur Service).
• Enclosed, 4 hole chassis mount.
• Minimum 6" long leads.
• Class A insulation (105 degrees C).
• Hi-Pot test at a minimum of twice secondary voltage
• Conservative designs - CSA certified (209651).

Dual 117/234 VAC primary, 50/60 Hz. operation. 120 V series, 60 V parallel secondary.

• Replacement for Yorkville/Traynor amplifiers
• 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".

Part No. Primary Secondary 1 Secondary 2 Secondary 3 Yorkville / Traynor Amp Yorkville / Traynor Part No VAC Hz. P-T290TRA 120 V 60 Hz. 320 V @ 600 mA 60 V @ 50 mA 6.3 V.C.T. @ 9 A 100 Watt Bass A-1380 P-T290TRB 120 V 60 Hz. 620 V @ 115 mA 6.3 V.C.T. @ 115 mA YBA2-B A-1314 P-T291JX 120 V 60 Hz. 320 V @ 500 mA 60 V @ 20 mA 6.65 V.C.T.

Low Voltage, Filament High Current, Chassis Mount. 115 V primary.

• Replacement for Vox amplifiers
• 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".

• Replacements for Vox 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".

• Replacement for Ampeg amplifiers
• 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".

Part No.
Primary
Ampeg Model Names
Ampeg Part No
Bobbin/Paper Wound


VAC
Hz.




P-T291GX
120 V
60 Hz.
B25
12XA
Bobbin


P-T290CAZ
117 V
60 Hz.
Gemini VI 25W
PT 113
Bobbin


P-T290ETX
120 V
60 Hz.
Super Echo Twin
PT 109
Bobbin


P-T291HX
110 / 115 / 230 V
50 / 60 Hz.
V50H
94-270-030
Bobbin