Universal Push-Pull Tube Output

Key Features

Designed for general purpose or replacement use in push-pull tube output circuits.
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).
Tables provided with each transformer listing 90 pre-calculated impedance ratios (see below).
Primary impedances from 1,200 to 25,000 Ohms.
Secondary impedances from 1.5 to 15 Ohms.

Part Number (click for price or to order)	Thumbnail Photo	Audio Watts	Max. D.C. Bias (ma)	Primary Inductance	Data Sheet Reader File	Weight (lbs.)
125A		3	25	14.94 H		0.19
125B		5	45	8.97 H		0.3
125C		8	60	5.60 H		0.5
125D		10	70	4.48 H	-	1
125E		15	80	2.99 H	-	1.5

90 Pre-Calculated Impedance Ratios

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
1 & 2	27,000	-	-	-	-	-	-	-
2 & 3	18,000	24,000	-	-	-	-	-	-
3 & 4	16,500	22,000	-	-	-	-	-	-
4 & 5	10,000	13,500	21,600	27,000	-	-	-	-
5 & 6	8,500	11,000	18,000	22,000	-	-	-	-
1 & 3	5,400	7,200	11,500	15,000	21,600	-	-	-
2 & 4	4,200	5,600	9,000	11,200	16,800	22,500	-	-
3 & 5	3,300	4,400	7,000	8,800	13,200	17,600	26,400	-
4 & 6	2,400	3,200	5,100	6,400	9,600	12,800	19,200	24,000
1 & 4	2,150	2,900	4,600	5,800	8,700	11,600	17,400	21,500
2 & 5	1,550	2,050	3,300	4,100	6,150	8,200	12,300	15,500
3 & 6	1,300	1,700	2,700	3,400	5,100	6,800	10,200	12,800
1 & 5	-	1,400	2,200	2,800	4,200	5,600	8,400	10,200
2 & 6	-	-	1,700	2,100	3,150	4,200	6,300	8,000
1 & 6	-	-	1,200	1,500	2,300	3,000	4,500	5,600

MECHANICAL DATA

Gallery Image