ULTRA COMPACT (A) AUDIO TRANSFORMERS

Input & Matching Transformers
Type

Number


Application
Primary

Imp. Ohms
Unbal

DC
Second

Imp
Response

+/-2db(Hz)
Pri. Res.
Max

dbm
Max

mW
A10Low Imp. to Grid
50,125/150,200/250 333,500/600
0
50,000 Split
20-20,000
59
+15
30
A11*Low imp. to 1 or 2 Grids
50,200,500
0
50,000 CT
20-20,000
52
+5
30
A12Low Imp. to PP Grid
50,125/150,200/250 333,500/600
0
80,000 Split
20-20,000
60
+15
30
A20#Mixing, Matching
50,125/150,200/250 333,500/600
0
50,125/150,200/250 333,500/600
10-50,000
64
+15
30
A21*#Mixing, Matching
50,200/250,500/600
0
50,200/250,500/600
30-30,000
28
+15
30
A27XTAL/HI, Imp. to Line
100,000 Split
0
50,125/150,200/250 333,500/600
30-20,000
3700
+15
30
A39Line to Transistor
600/150 Split
0
2000/500 Split
20-20,000
70
+10
10
A43Mix,Match line or transistor
600/150 Split
0
2 Secondaries

each 600/150 Split
20-30,000
45
+15
30

* Multiple Alloy Shiels for Extremely Low Hum Pickup # High Electrostatic Shielding

Interstage & Output Transformers

Type

Number


Application
Primary

Imp
Unbal

DC
Second

Imp
Response

2 db (Hz)
Pri. Res.
Max

dbm
Max

Mw
A15Transistor Interstage
10,000/2,500 Split
8
2,000/500 Split
40-20,000
600
-
1W
A16Plate to Grid
15,000
0
80,000
20-20,000
800
+15
30
A18Single or PP Plates to PP Grids
15,000 Split
0
80,000 Split
20-20,000
1040
+15
30
A19Plate to PP Grids
15,000
8
80,000 Split
40-20,000
2900
+15
30
A22Trans. Interstage or Output
500CT
20
500/125 Split
40-20,000
36
-
1W
A23Trans. Interstage or Output
500CT
20
16/4 Split
40-20,000
36
-
1W
A24Single or PP Plates to Line
15,000 Split
0
50,125/150,200/250,333,500/600
20-40,000
1430
+15
30
A25Plate to Line
15,000
8
50,125/150,200/250,333,500/600
40-20,000
1580
+15
30
A26Single or PP Plates to Line
30,000 Split
0
50,125/150,200/250,333,500/600
20-40,000
2520
+15
30
A28Transistor Interstage
48CT
750 Bal.
16 Split,8,4
40-20,000
5
-
5W
A34Transistor Interstage
25,000/6,250 Split
3
500/125 split
30-20,000
1620
-
1W
A35Transistor Interstage
10,000/2,500 split
8
500/125 Split
30-20,000
610
-
1W
A36Transistor Interstage
500/125 split
20
150/37.5 split
40-20,000
36
-
1W
A37Transistor Interstage
500/125 Split
20
50/12.5 Split
40-20,000
36
-
1W
A38Transistor Interstage
100/25 Split
40
40/10 Split
40-20,000
6.2
-
1W
A44Trans. Interstage or Output
4,000/1,000 split
12
600/150 Split
30-20,000
310
-
1W