OT15SE-HF-3K5 (HiFi Pair) SE Output Xfmr 15VA 3K5 x 4/8Ohm 75mADC
OT15SE-HF-3K5 Pair for HiFi projects USA built version installed in FM100 covers- fully shielded. 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 10 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 a 5x interleaved winding with 3K5 Ohm input and dual 4 & 8 ohm output impedances. It's surface mounts by a 4-hole pattern at 2.0in x 2.0in. 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: 5 layer split interleave, perfect layer output windings Magnet Wire: MW80 155C or higher Varnish- Class B 130C Tapes: 3M #1350 & 3M 27 Glass cloth tapes Cover: Bahrs USA FM100 covers Weight: 3.5 Lbs (Each). Operating Voltage 500 Vdc Maximum Output Power: 15 VA (75mADC) Designed Operating Frequency (+/-3dB): 30 to 20000 Hz. HiPot Test Ratings 1000Vac minimum Input Impedance B+ to Plate: 3500 Ohms Output Impedances: 4,8 Ohms Application: 10 to 15 Watt SE Amplifiers. Mounting- 4 holes at 2.0"W x 2.0"L.
