Pair of OT15SE-HF-5KUL SE HiFi Output Xfmr 5K x 4/8Ohm 40%UL 65mADC

  

One PAIR of OT15SE-HF-5KUL for SE HiFi projects USA built version installed in Black Vertical covers. This is a new 15VA Single-Ended Tube Output transformer for tube amplifier circuit applications (30Hz to 20KHz) using various single ended Power Tubes. This version of the transformer is built in USA to an MPS custom design spec & is suitable for many 8 to 15VA Single-Ended HiFi amp circuits looking for a solid USA built output transformer at a reasonable price. We are using audio grade 29M6 laminations in an E-I 100 x1.5IN gapped core structure with bobbin wound construction. It's an 5-section interleaved winding S-P-S-P-S with 5K Ohm input and 4 & 8 ohm output impedances in perfect layer windings. There is a 40% UL tap (wrt B+) which you can tie off if not needed. It's surface mounts by a 4-hole pattern at 2.0in x 2.25in. CONSTRUCTION DETAILS - Laminations: 29M6 x EI-100 x 1.5IN Butt stack with gap paper Bobbin: EI-100 1 x 1.5in Nylon Glass Reinforced UL94V-0 Winding: Interleaved, perfect layer output windings Magnet Wire: MW80 155C or higher Varnish- Class B 130C Tapes: 3M #56 & 3M 44 tapes Cover: Black Powder Coated VC100 style covers Weight: 3.0 Lbs EA. Operating Voltage 500 Vdc Maximum Output Power: up to 15 VA (65mADC) Designed Operating Frequency (+/-3dB): 30 to 20000 Hz. HiPot Test Ratings 1000Vac minimum Input Impedance B+ to Plate: 5000 Ohms Output Impedances: 4,8 Ohms Application: 4 to 15 Watt SE Amplifiers. Mounting- 4 holes at 2.0"W x 2.25"L.