Universal - Push-Pull
- Tube Output
Key Features:
-
Designed for general purpose or replacement use in push-pull tube
output circuits.
For single ended use see
the 125 SE series here
-
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.
-
Tables provided with each transformer listing 90 pre-calculated
impedance ratios.
-
Primary impedances from 1,200 to 25,000 Ohms.
-
Secondary impedances
from 1.5 to 15 Ohms.
|
Cat. No. |
Photo
|
Audio Power
(Watts)
|
Max. D.C. Bias
(ma)
|
Wt. Lbs.
|
Price including
UK delivery
|
| 125A |
|
3 |
25 |
0.19 |
£31.00 |
|
| 125B |
|
5 |
45 |
0.3 |
£31.00 |
|
| 125C |
|
8 |
60 |
0.5 |
£31.00 |
|
| 125D |
|
10 |
70 |
1 |
£31.00 |
|
| 125E |
|
15 |
80 |
1.5 |
£39.00 |
|
Mechanical
Data (125A - 125E)
|
Cat. No. |
Dimensions (Inches) |
G Mtg. Hole |
|
A |
B |
C |
D |
| 125A |
2.06 |
1.25 |
1.19 |
1.75 |
0.187 |
| 125B |
2.38 |
1.38 |
1.38 |
2.00 |
0.187 |
| 125C |
2.81 |
1.50 |
1.69 |
2.38 |
0.187 |
| 125D |
3.25 |
1.75 |
2.00 |
2.81 |
0.187 |
| 125E |
3.69 |
2.00 |
2.31 |
3.13 |
0.187 |
Schematic & Hook Up Data
|
Connect Speaker
To
(Secondary Lugs)
|
Voice Coil Impedance (Ohms)
|
|
1.5
|
2
|
3.2
|
4
|
6
|
8
|
12
|
16 |
|
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
|
21,600
|
|
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
|
|
|
