125A HAMMOND | Alldatasheet
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Basingstoke, UK 01256 812812 AUSTRALIA Queenstown, Australia 61-8-8240-2244 CANADA Guelph, Ontario (519) 822-2960 St. Laurent, Quebec (514) 343-9010 USA Cheektowaga, NY (716) 630-7030 www.hammondmfg.com Push-Pull Output - General Purpose (125A-E Series) UNIVERSAL PUSH-PULL "CLASSIC" TUBE OUTPUT TRANSFORMERS Designed for general purpose or replacement use in push-pull tube output circuits. • For single ended use, see our 125 SE series - optimized for single ended tube output circuits. • Frequency response: 150 Hz. - 15 Khz (+/- 1db max. ref. 1 Khz) • Open style with minimum 5" long primary leads, secondary solder lugs for convenient secondary connections. • Tables provided with each transformer listing 90 pre-calculated impedance ratios. • Primary impedances from 1,200 to 25,000 Ohms and secondary impedances from 1.5 to 15 Ohms (see chart below).• Part No. Audio Watts Max D.C. Bias (ma) Primary Inductance Henrys Dimensions (Inches) Wt. Lbs.A B C D G Mtg. Hole Connect Speaker to (Sec. Lugs) Voice Coil Impedance (Ohms) 1.5 2 3.2 4 6 8 12 15 Resulting Total Primary Impedance (Blue Wire to Brown Wire) 4 & 5 10K 13.5K 21.6K 27K - - - - 5 & 6 8.5K 11K 18K 22K - - - - 1 & 3 5.4K 7.2K 11.5K 15K 21.6K - - - Schematic & Hook Up Data Brown (Plate) Red (B+) Blue (Plate) PRI SEC Tube Audio
Basingstoke, UK 01256 812812 AUSTRALIA Queenstown, Australia 61-8-8240-2244 CANADA Guelph, Ontario (519) 822-2960 St. Laurent, Quebec (514) 343-9010 USA Cheektowaga, NY (716) 630-7030 www.hammondmfg.com Push-Pull Output - General Purpose (125H-J Series) MULTIPLE IMPEDANCE - 8 WATT "CLASSIC" TUBE OUTPUT TRANSFORMERS Designed for general purpose or replacement use in push-pull tube output circuits.• Frequency response: 150 Hz. - 15 Khz (+/- 1db max.- ref. 1 Khz). • 125H - open style with minimum 5" long primary leads, secondary solder lugs for convenient secondary connections. • 125J - open style with minimum 10" long primary & secondary leads.• Schematic & Hook Up Data 125J125H Part No. Audio Watts Primary Impedance (Ohms) Secondary Impedance (Ohms) Primary Inductance Henrys Dimensions (Inches) Wt. Lbs.A B C D G Mtg. Hole Pri. Impedance Plate to Plate Brown to Blue (Ohms) Sec. Impedance (Ohms) Use Sec. Lead Connections 4,000 C.T. 6/8 WHT - GRN 4,000 C.T. 3.2/4 WHT - YEL 2,500 C.T. 6/8 BLK - GRN 2,500 C.T. 3.2/4 BLK - YEL Brn (Plate) Blu (Plate) Lug #1 Common Lug #2 2 Ohms Lug#3 4 Ohms Lug #4 8 Ohms PRI SEC Red B+ Brn (Plate) Blu (Plate) Black White Yellow Green PRI SEC Red B+ Tube Audio