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

Units shown: inch. Switch units to: mm

Part No. Audio Max. D.C. Bias Per Side Primary Weight Overall Dimensions Mounting Hole
Watts (ma) Inductance (lbs.) A B C D 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

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Hook-Up Data

Connect Voice Coil Impedance (Ohms)
Speaker To 1.5 2 3.2 4 6 8 12 15
(Secondary Lugs) 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

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Data subject to change without notice.