Hammond 1629SEA 30W Single-Ended Tube Output Transformer, 6500 Ohm

The 1629SEA is a 30 watt single ended output transformer with a 6500 ohm primary rated for 100 mA of DC bias. It is suggested for triodes such as the 211, 811A, 572B and 845, and for pentodes including the 6AQ5, 6V6, 6L6, 807, 5881, 6550 and EL84, making it a fit for hi-fi builders running high plate impedance designs.

The 1627-1642 Series is "over designed" for high fidelity, single ended, Class-A tube output circuits. Each transformer is enclosed (shielded) and uses high quality (M6) grain oriented silicon steel laminations, with a gapped core to reduce core saturation in Class-A amplifier circuits. Insulated flexible leads are 8" minimum, and the case uses four slot, chassis Type "X" mounting with 0.20 x 0.38 in (5 x 10 mm) slots.

The secondary is tapped at 4, 8 and 16 ohms and a 40% screen tap enables optional Ultra-Linear operation. Listed primary inductance is 55 Henrys. Typical drawing values: 197 ohm primary DCR (blue to red), 20.4 Hy primary inductance and 126 k primary impedance at 1 kHz, 1 V, plus secondary DCR of 414, 517 and 721 milliohms. Frequency response is at least 20 Hz to 20 kHz at full rated power (+/- 1 dB max., ref. 1 kHz); hipot test 2000 VRMS; temperature range -40 to 105C.

Overall dimensions are A 3.75 in (95 mm), B 4.94 in (125 mm), C 4.56 in (116 mm), D 3.00 in (76 mm) and E 3.81 in (97 mm). Weight is 11 lbs (4.99 kg). The label reads Made in Canada. RED to B+, BLUE to the plate, BLUE/YELLOW to the screen. RoHS and REACH compliant, UPC 623980008318.