125D

10/3/22, 1:31 AM Universal Push-Pull Tube Output (125A-125E Series) - Hammond Mfg. Quality Products. Service Excellence. Universal Push-Pull Tube Output 125A-125E Series Audio Features Designed for general purpose or replacement use in push-pull tube output circuits. For single ended use, see our 125SE Series. Frequency response: 150 Hz. - 15 Khz at full rated power (+/- 1db max. ref. 1 Khz) Open style with minimum 5" long primary leads. Secondary solder lugs for convenient secondary connections (except 125B - uses minimum 5" secondary leads). Primary impedances from 1,200 to 25,000 Ohms. Secondary impedances from 1.5 to 15 Ohms. For smaller sized units (but fewer impedance options) see our multiple impedance 125H Series. Gallery           Audio Max. D.C. Bias Per Side Primary Weight Part No. Watts (ma) Inductance (lbs.) A Overall Dimensions B C D Mounting Hole G 125A 3 20 14.94 H 0.19 2.06 1.25 1.19 1.75 0.19 125B 5 35 8.97 H 0.3 2.38 1.38 1.38 2.00 0.19 125C 8 45 5.60 H 0.5 2.81 1.50 1.69 2.38 0.19 125D 10 55 4.48 H 1 3.25 1.75 2.00 2.81 0.19 125E 15 60 2.99 H 1.5 3.69 2.00 2.31 3.13 0.19 Hook-Up Data Connect Speaker To (Secondary Lugs) Voice Coil Impedance (Ohms) 1.5 2 3.2 4 6 8 12 15 Resulting Total Primary Impedance (Below), Blue Wire to Brown Wire https://www.hammfg.com/electronics/transformers/audio/125a-125e 1/2 10/3/22, 1:31 AM Universal Push-Pull Tube Output (125A-125E Series) - Hammond Mfg. Connect Speaker To Voice Coil Impedance (Ohms) 1.5 (Secondary Lugs) 2 3.2 4 6 8 12 15 Resulting Total Primary Impedance (Below), Blue Wire to Brown Wire 1&2 27000 - - - - - - - 2&3 18000 24000 - - - - - - 3&4 16500 22000 - - - - - - 4&5 10000 13500 21600 27000 - - - - 5&6 8500 11000 18000 22000 - - - - 1&3 5400 7200 11500 15000 21600 - - - 2&4 4200 5600 9000 11200 16800 22500 - - 3&5 3300 4400 7000 8800 13200 17600 26400 - 4&6 2400 3200 5100 6400 9600 12800 19200 24000 1&4 2150 2900 4600 5800 8700 11600 17400 21500 2&5 1550 2050 3300 4100 6150 8200 12300 15500 3&6 1300 1700 2700 3400 5100 6800 10200 12800 1&5 - 1400 2200 2800 4200 5600 8400 10200 2&6 - - 1700 2100 3150 4200 6300 8000 1&6 - - 1200 1500 2300 3000 4500 5600 Data subject to change without notice © 2022. Hammond Manufacturing Ltd. All rights reserved. https://www.hammfg.com/electronics/transformers/audio/125a-125e 2/2