SINGLE - ENDED OUTPUT TRANSFORMERS
FOR TUBE AMPLIFIERS
CAUTION! HIGH VOLTAGE!
Observe safety precautions when working with high voltage!
In all output transformers sectioning is applied for reaching of as much as possible wide pass-band.
Each transformer passes primary heat treatment in a current of 24 hours in thermocases and vacuum impregnation by a varnish in primary sort.
For a bandage couplers from not magnetic materials are used.
Standard multi-coloured outputs of transformers (length 15 - 20 cm)
can be used directly in point-to-point application.
Differ in pairs of transformers no more than 5 % on all measured parametres.
We offer SE output transformers potted into black boxes of black colour (powder colouring) or not potted.
Manufacturing of single-ended output transformers under the individual technical specification is possible.
"Golden Middle" reserves the right to make changes in products
not affecting the basic technical characteristics.
All transformers have a limited warranty according technical specifications
during 12 months from the date of receiving.
POT - SE - 2,5 / 8 / 16 - 30
2,5 KOhm / 8 or 16 Ohm 250 mA 30 W
potted into black boxes
TECHNICAL SPECIFICATIONS :
EE core 96 x 96
Case dimensions : 110 mm x 110 mm x H 145 mm
The adjusting sizes : 4 õ Ì4 80 mm õ 80 mm
Inductance : 30 H (DCI = 250 mA)
The maximum DC operation voltage : 1000 V
The maximum output power : 30 W
Frequency range of 1 W: 10 Hz - 45 KHz
It is recommended to use with following vacuum tubes :
2 õ 6S4S / 2S4S / 2A3,
300B,
6S19P,
6P3S-E / 5881,
2 õ 6P14P / EL84 / 6BQ5,
2 õ 300B,
6550C,
6P3S / 6L6,
EL34, 2 x EL34 (in triode)
Transformer circuit diagram 
POT - SE - 8,0 / 8 - 40
8,0 KOhm / 8 Ohm 150 mA 40 W
potted into black box
TECHNICAL SPECIFICATIONS :
EE core 96 x 96
Case dimensions : 110 mm x 110 mm x H 145 mm
The adjusting sizes : 4 õ Ì4 80 mm õ 80 mm
Inductance : 30 H (DCI = 250 mA)
The maximum DC operation voltage : 2500 V
The maximum output power : 40 W
Frequency range of 1 W: 12 Hz - 45 KHz
Primary DC resistance 210 Ohm
It is recommended to use with following vacuum tubes :
GM70,
GK71, SV572,
211,
845
Transformer circuit diagram
POT - SE - 4,0 / 4 / 8 - 30
POT - SE - 4,0 / 8 / 16 - 30
4,0 KOhm / 4 or 8 Ohm 250 mA 30 W
4,0 KOhm / 8 or 16 Ohm 250 mA 30 W
potted into black boxes
TECHNICAL SPECIFICATIONS :
EE core 96 x 96
Case dimensions : 110 mm x 110 mm x H 145 mm
The adjusting sizes : 4 õ Ì4 80 mm õ 80 mm
Inductance : 30 H (DCI = 250 mA)
The maximum DC operation voltage : 1000 V
The maximum output power : 30 W
Frequency range of 1 W: 10 Hz - 45 KHz
It is recommended to use with following vacuum tubes :
2 õ 6S4S / 2S4S / 2A3,
300B,
6S19P,
6P3S-E / 5881,
2 õ 6P14P / EL84 / 6BQ5,
2 õ 300B,
6550C,
6P3S / 6L6,
EL34, 2 x EL34 (in triode)
Transformer circuit diagram
POT - SE - 3,5 / 8 - 10 OT - SE - 3,5 / 8 - 10
3,5 KOhm / 8 Ohm 60 mA 10 W
POT - SE - 3,5 / 4 / 8 - 10 OT - SE - 3,5 / 4 / 8 - 10
3,5 KOhm / 4 or 8 Ohm 60 mA 10 W
potted into black boxes not potted
TECHNICAL SPECIFICATIONS :
Case dimensions : 75 mm x 85 mm x H 70 mm (for the potted item)
The adjusting sizes : 4 õ Ì3 55 mm õ 65 mm (for the potted item)
Inductance : 20 H (DCI = 60 mA)
The maximum DC operation voltage : 750 V
The maximum output power : 10 W
Frequency range of 1 W: 25 Hz - 25 KHz
It is recommended to use with following vacuum tubes :
6S4S / 2S4S / 2A3,
6P3S-E / 5881,
6P14P/ EL84 / 6BQ5,
6P15,
6P3S / 6L6,
6P3S / 6L6 (in triode)
Transformer circuit diagram
POT - SE - 5,0 / 8 - 10 OT - SE - 5,0 / 8 - 10
5,0 KOhm / 8 Ohm 60 mA 10 W
POT - SE - 5,0 / 4 / 8 - 10 OT - SE - 5,0 / 4 / 8 - 10
5,0 KOhm / 4 or 8 Ohm 60 mA 10 W
potted into black boxes not potted
TECHNICAL SPECIFICATIONS :
Case dimensions : 75 mm x 85 mm x H 70 mm (for the potted item)
The adjusting sizes : 4 õ Ì3 55 mm õ 65 mm (for the potted item)
Inductance : 20 H (DCI = 60 mA)
The maximum DC operation voltage : 750 V
The maximum output power : 10 W
Frequency range of 1 W: 25 Hz - 25 KHz
It is recommended to use with following vacuum tubes :
6S4S / 2S4S / 2A3,
6P3S-E / 5881,
6P14P/ EL84 / 6BQ5,
6P15P,
6P18P,
6F3P,
6F5P,
6P43P,
6P3S / 6L6,
6P3S / 6L6 (in triode)
Transformer circuit diagram
The line of single-ended (SE) output transformers
The maximum output power : 20 W
POT - SE - 2,5 / 8 / 16 - 20
POT - SE - 2,0 / 4 / 8 / 16 - 20
2,5 KOhm / 8 or 16 Ohm 20 W
2,0 KOhm / 4 or 8 or 16 Ohm 20 W
POT - SE - 3,0 / 8 / 16 - 20
POT - SE - 3,0 / 4 / 8 / 16 - 20
3,0 KOhm / 8 or 16 Ohm 20 W
3,0 KOhm / 4 or 8 or 16 Ohm 20 W
POT - SE -3,5 / 8 / 16- 20
POT - SE - 3,5 / 4 / 8 / 16 - 20
3,5 KOhm / 8 or 16 Ohm 20 W
3,5 KOhm / 4 or 8 or 16 Ohm 20 W
POT - SE - 4,5 / 8 / 16- 20
POT - SE - 4,5 / 4 / 8 / 16 - 20
4,5 KOhm / 8 or 16 Ohm 20 W
4,5 KOhm / 4 or 8 or 16 Ohm 20 W
potted into black boxes
TECHNICAL SPECIFICATIONS :
Case dimensions : 75 mm x 85 mm x H 95 mm
The adjusting sizes : 4 õ Ì3 55 mm õ 65 mm
Inductance : 30 H (DCI = 90 mA)
The maximum DC current : 90 mA
The maximum DC operation voltage : 1000 V
The maximum output power : 20 W
Frequency range of 1 W: 10 Hz - 45 KHz
It is recommended to use with following vacuum tubes :
2 õ 6S4S / 2S4S / 2A3,
300B,
6S19P,
6P3S-E / 5881,
2 õ 6P14P / EL84 / 6BQ5,
2 õ 300B,
6550C,
6P3S / 6L6,
2 x EL34 (in triode), EL34,
6S4S / 2S4S / 2A3,
6P3S / 6L6 (in triode), 6P3S-E / 5881 (in triode),
RB300-3CX,
KT66,
KT88,
6GB8,
6CA4, G807
Transformer circuit diagram
POT - SE - 3,5 / 8 - 20 OT - SE - 3,5 / 8 - 20
3,5 KOhm / 8 Ohm 90 mA 20 W
potted into black boxes not potted
TECHNICAL SPECIFICATIONS :
Case dimensions : 75 mm x 85 mm x H 95 mm (for the potted item)
The adjusting sizes : 4 õ Ì3 55 mm õ 65 mm (for the potted item)
Inductance : 30 H (DCI = 90 mA)
The maximum DC current : 90 mA
The maximum DC operation voltage : 1000 V
The maximum output power : 20 W
Frequency range of 1 W: 10 Hz - 45 KHz
It is recommended to use with following vacuum tubes :
6S4S / 2S4S / 2A3,
300B,
6550Ñ,
EL34,
6L6 / 6P3S,
6P3S / 6L6 (in triode),
6P3S-E / 5881 (in triode)
Transformer circuit diagram
POT - SE - 3 / 8 - 20
3 KOhm / 8 Ohm 90 mA 20 W
potted into black boxes
TECHNICAL SPECIFICATIONS :
Case dimensions : 75 mm x 85 mm x H 95 mm
The adjusting sizes : 4 õ Ì3 55 mm õ 65 mm
Inductance : 30 H (DCI = 90 mA)
The maximum DC operation voltage : 1000 V
The maximum output power : 20 W
Frequency range of 1 W : 10 Hz - 45 KHz
It is recommended to use with following vacuum tubes :
6S4S / 2S4S / 2A3,
300B,
6550Ñ,
EL34,
6L6 / 6P3S (in triode),
6P3S-E / 5881 (in triode)
Transformer circuit diagram
POT - SE - 4,5 / 8 - 20
4,5 KOhm / 8 Ohm 90 mA 20 W
potted into black boxes
TECHNICAL SPECIFICATIONS :
Case dimensions : 75 mm x 85 mm x H 95 mm
The adjusting sizes : 4 õ Ì3 55 mm õ 65 mm
Inductance : 30 H (DCI = 90 mA)
The maximum DC operation voltage : 1000 V
The maximum output power : 20 W
Frequency range of 1 W : 10 Hz - 35 KHz
It is recommended to use with following vacuum tubes :
6S4S / 2S4S / 2A3,
300B,
6550Ñ,
EL34,
6L6 / 6P3S (in triode),
6P3S-E / 5881 (in triode), RB300-3CX,
KT66,
KT88,
6GB8,
6CA4,
G807
Transformer circuit diagram
POT - SE - 3 / 8 - 30
3 KOhm / 8 Ohm 120 mA 30 W
potted into black boxes
TECHNICAL SPECIFICATIONS :
Case dimensions : 105 mm x 95 mm x H 100 mm
The adjusting sizes : 4 õ Ì4 75 mm õ 85 mm
Inductance : 50 H (DCI = 120 mA)
The maximum DC operation voltage : 1000 V
The maximum output power : 30 W
Frequency range of 1 W : 10 Hz - 45 KHz
It is recommended to use with following vacuum tubes :
2 õ 6S4S / 2S4S / 2A3,
300B,
6S19P,
6P3S-E / 5881,
2 õ 6P14P / EL84 / 6BQ5,
2 õ 300B,
6550Ñ,
EL34,
6L6 / 6P3S,
2 x EL34 (in triode),
6S4S / 2S4S / 2A3,
6P3S / 6L6 (in triode), 6P3S-E / 5881 (in triode)
Transformer circuit diagram
POT - SE - 3,5 / 8 - 30 OT - SE - 3,5 / 8 - 30
3,5 KOhm / 8 Ohm 120 mA 30 W
potted into black boxes not potted
TECHNICAL SPECIFICATIONS :
Case dimensions : 105 mm x 95 mm x H 100 mm (for the potted item)
The adjusting sizes : 4 õ Ì4 75 mm õ 85 mm (for the potted item)
Dimensions : 95 mm x 85 mm x H 90 mm (for the not potted item)
Inductance : 50 H (DCI = 120 mA)
The maximum DC current : 90 mA
The maximum DC operation voltage : 1000 V
The maximum output power : 20 W
Frequency range of 1 W: 10 Hz - 45 KHz
It is recommended to use with following vacuum tubes :
2 õ 6S4S / 2S4S / 2A3,
300B,
6S19P,
6P3S-E / 5881,
2 õ 6P14P / EL84 / 6BQ5,
2 õ 300Â,
6550Ñ,
6P3S / 6L6,
EL34, 2 x EL34, 6S4S / 2S4S / 2A3,
6P3S / 6L6 (in triode), 6P3S-E / 5881 (in triode)
RB300-3CX,
KT66, KT88
Transformer circuit diagram
POT - SE - 3,5 / 8 / 16 - 30
OT - SE - 3,5 / 8 / 16 - 30
3,5 KOhm / 8 Ohm or 16 Ohm 120 mA 30 W
potted into black boxes not potted
TECHNICAL SPECIFICATIONS :
Case dimensions : 105 mm x 95 mm x H 100 mm (for the potted item)
The adjusting sizes : 4 õ Ì4 75 mm õ 85 mm (for the potted item)
Dimensions : 95 mm x 85 mm x H 90 mm (for the not potted item)
Inductance : 50 H (DCI = 120 mA)
The maximum DC operation voltage : 1000 V
The maximum output power : 30 W
Frequency range of 1 W : 10 Hz - 45 KHz
It is recommended to use with following vacuum tubes :
2 õ 6S4S / 2S4S / 2A3,
300B,
6S19P,
6P3S-E / 5881,
2 õ 6P14P / EL84 / 6BQ5,
2 õ 300B,
6550Ñ, EL34,
6L6 / 6P3S, 2 x EL34 (in triode),
6S4S / 2S4S / 2A3,
6P3S / 6L6 (in triode),
6P3S-E / 5881 (in triode)
Transformer circuit diagram
POT - SE - 3,5 / 4 / 8 / 16 - 30
OT - SE - 3,5 / 4 / 8 / 16 - 30
3,5 KOhm / 4 or 8 or 16 Ohm 120 mA 30 W
potted into black boxes not potted
TECHNICAL SPECIFICATIONS :
Case dimensions : 105 mm x 95 mm x H 100 mm (for the potted item)
The adjusting sizes : 4 õ Ì4 75 mm õ 85 mm (for the potted item)
Dimensions : 95 mm x 85 mm x H 90 mm (for the not potted item)
Inductance : 50 H (DCI = 120 mA)
The maximum DC operation voltage : 1000 V
The maximum output power : 30 W
Frequency range of 1 W : 10 Hz - 45 KHz
It is recommended to use with following vacuum tubes :
2 õ 6S4S / 2S4S / 2A3,
300B,
6S19P,
6P3S-E / 5881,
2 õ 6P14P / EL84 / 6BQ5,
2 õ 300B,
6550Ñ,
6L6 / 6P3S,
EL34, 2 x EL34 (in triode),
6S4S / 2S4S / 2A3 ,
6P3S / 6L6 (in triode),
6P3S-E / 5881 (in triode), YO186 (Loftin White)
Transformer circuit diagram
POT - SE - 4,5 / 8 / 16 - 30
4,5 KOhm / 8 Ohm or 16 Ohm 120 mA 30 W
potted into black boxes
TECHNICAL SPECIFICATIONS :
Case dimensions : 105 mm x 95 mm x H 100 mm
The adjusting sizes : 4 õ Ì4 75 mm õ 85 mm
Inductance : 50 H (DCI = 120 mA)
The maximum DC operation voltage : 1000 V
The maximum output power : 30 W
Frequency range of 1 W: 10 Hz - 45 KHz
It is recommended to use with following vacuum tubes :
2 õ 6S4S / 2S4S / 2A3,
300B,
6S19P,
6P3S-E / 5881,
2 õ 6P14P / EL84 / 6BQ5,
2 õ 300B,
6550Ñ,
6L6 / 6P3S,
EL34, 2 x EL34 (in triode),
6S4S / 2S4S / 2A3 ,
6P3S / 6L6 (in triode),
6P3S-E / 5881 (in triode),
RB300-3CX, KT66, KT88,
Transformer circuit diagram
