WELTER HIGH- END AUDIO OUTPUT TRANSFORMERS

WELTER standard audio output transformers are designed to replace existing units in guitar amplifiers and for commonly used circuits, utilizing most popular tubes.

  • High- End Valve Amplifier Audio Output Transformers

  • Premium lamination

PUSH-PULL AUDIO OUTPUT TRANSFORMERS

Ü 234

50W Ultra Linear 2-section Push-Pull Audio Output Transformer

Ra-a: 4 kOhm
Output windings: 4, 8 Ohm
I max. 70 mA per valve
Frequency response: 8 - 70 kHz -3dB
Suitable for: 2 x EL34/6CA7/6550/6L6GC or 4 x EL84/6V6
Dimensions: 102 x 102 x 77 mm
 
Weight 2,9 kg

Ü 250

25-35 W Ultra Linear Push-Pull Audio Output Transformer

Ra-a: 2,5 kOhm
Output windings: 4, 8 Ohm
I max. 120 mA per valve
Frequency response: 30 Hz- 60kHz +/- 2,4 dB
Suitable for: 4 x 6L6/4x5881/2x6AS7
Dimensions: 96 x 80 x 92 mm
 
Weight 2,7 kg

Ü 284

12 - 18 W Ultra Linear Push-Pull Audio Output Transformer

Ra-a: 8 kOhm
Output windings: 4, 8 Ohm
I max. 50 mA per valve
Frequency response: 25Hz-58kHz -3dB
Suitable for: 2 x EL84 / 6V6
Dimensions: 96 x 80 x 79 mm
 
Weight 1,9 kg

Ü 302

30 W Ultra Linear Push-Pull Audio Output Transformer

Ra-a: 5 kOhm
Output windings: 4, 8 Ohm
I max. 80 mA per valve
Frequency response: 15Hz-55kHz +/-2dB
Suitable for: 2 x 300B/2A3/R120/EL34/807
Dimensions: 96x80x93 mm
 
Weight 2,7 kg

Ü 581

20-25 W Ultra Linear Push-Pull Audio Output Transformer

Ra-a: 3,6 kOhm
Output windings: 4, 8 Ohm
I max. 55 mA per valve
Frequency response: 35 Hz - 80 kHz -3dB
Suitable for: 2 x 5881/EL34/EL12
Dimensions: 96 x 80 x 80 mm
 
Weight: 2,0 kg

Ü 662

40-50 W Ultra Linear Push-Pull Audio Output Transformer

Ra-a: 4,5 kOhm
Output windings: 4, 8 Ohm
I max. 70 mA per valve
Frequency response: 10 Hz - 90 kHz -3dB
Suitable for: 2 x 5881/EL34/EL12
Dimensions: 96 x 80 x 82 mm
 
Weight: 2,2 kg

Ü 882

50-70 W Ultra Linear Push-Pull Audio Output Transformer

Ra-a: 6,6 kOhm
Output windings: 4, 8 Ohm
I max. 160 mA per valve
Frequency response: 10Hz/ -1,5dB - 65kHz/ -3dB
Suitable for: 2 x KT88/6550
Dimensions: 102x120x90 mm
 
Weight: 4,1 kg

HE-AT 2

60-70 W Ultra Linear Push-Pull Audio Output Transformer

Ra-a: 2,9 kOhm
Output windings: 4, 8 Ohm
I max. 90 mA
Frequency response: 9Hz - 82kHz -3dB
Suitable for: 2 x KT88/6550A/KT90
Dimensions: 102 x 102 x 94 mm
 
Weight: 4,1 kg

HE-AT 4

90-100 W Ultra Linear Push-Pull Audio Output Transformer

Ra-a: 1,8 kOhm
Output windings: 4, 8 Ohm
I max. 80 mA per valve
Frequency response: 9 Hz - 95 kHz -0,9dB
Suitable for: 4 x EL34/KT88/6550 or 8 x EL84/6V6
Dimensions: 120 x 100 x 116 mm
 
Weight: 5,75 kg

HE-AT 6

180-200W High Power Push-Pull Audio Output Transformer

under construction
Ra-a: n.a.
Output windings: 4, 8 Ohm
I max. n.a.
Frequency response: n.a.
Suitable for: 6 x EL34/KT88/6550
Dimensions: 135 x 113 x 119 mm
 
Weight: 6,8 kg

Ü-PPP 1

20-30 W Parallel Push-Pull Audio Output Transformer

Rk-k: 970 Ohm
Output windings: 4, 8, 15 Ohms
I max.  
Frequency response:  
Suitable for: 2 x EL34 or 4 x 6L6
Dimensions: 96 x 80 x 85 mm
 
Weight: 2,2 kg
 
 

SINGLE ENDED AUDIO OUTPUT TRANSFORMERS

HE-ET 5

30-50 W Single Ended Audio Output Transformer

Ra-a: 300-450-600 + 750  Ohms
Output winding: 8 Ohm
I max. 450 mA
Frequency response: 20Hz-50kHz -1,5dB
Suitable for:
Ra:  300 Ohm => 2 x 6C33 / 3 x 6AS7 parallel
Ra:  450 Ohm => 1 x 6C33 Single Ended
Ra:  600 Ohm => 1 x 6C33 Single Ended
Ra:  750 Ohm => 2 x 6AS7 or 4 x 2A3/300B/ EL34/6550A/KT88 Parallel Single Ended
Dimensions: 102x102x93 mm
 
Weight 4,1 kg

HE-ET 6

25 W Single Ended Audio Output Transformer with Bifiliar Winding

Ra-a: 340 Ohm + 600 Ohm
Output winding: 4, 8 Ohm
I max. 300 mA
Frequency response: 20Hz-60kHz -1,1/1,6 dB
Suitable for:
Ra:  340 Ohm => 2x6C33/3x6AS7 (Parallel) PSE
Ra:  600 Ohm => 1x6C33 Single Ended
Dimensions: 102 x 102 x 93 mm
 
Weight 4,1 kg
HE-ET 20

15-30 W Single Ended Audio Output Transformer

Ra-a: 1,0-1,25-1,5 Ohm + 2,1 kOhm
Output winding: 8 Ohm
I max. 200 mA
Frequency response: (180 mA at 2,1 kOhm): 20Hz - 60kHz -1,5 dB
Suitable for:
Ra 1,5 kOhm 2 x EL34/6550/807/2A3/300B
4 x EL84/6V6 PSE
Ra 2,1 kOhm 2 x 5881/6L6/KT66 PSE
1 x KT90 Single Ended
Dimensions: 102 x 102 x 78 mm
 
Weight 2,8 kg

HE-ET 30

15-25 W Single Ended Audio Output Transformer

Ra-a: 2,0-2,3-2,5-2,8 kOhm + 3 kOhm
Output winding: 8 Ohm
I max. 120 mA
Frequency response: (100 mA at 2,5 kohm): 20 Hz - 80 kHz -1,5dB
Suitable for:
Ra 2,5 kOhm 1 x 2A3/300B/R120/AD1/EBIII
2 x EL84/6V6/ECL86/DA30 PSE
Ra 2,8 kOhm 1 x VV30P/PX25 SE
Ra 3 kOhm 1 x EL34/807 SE
Dimensions: 102 x 102 x 78 mm
 
Weight 2,8 kg

HE-ET 40

15-30 W Single Ended Audio Output Transformer

Ra-a: 3,5 - 4 kOhm + 5 kOhm
Output winding: 8 Ohm
I max. 120 mA
Frequency response: (90 mA at 4 kOhm): 20 Hz - 80 kHz -2,2dB
Suitable for:
Ra 3,5 kOhm 1xKT88/6550A/PX4/
EL500/EL504/EL12/EL34/300B SE
Ra 4 kOhm 1xEL156 SE
2xEL84/6V6 PSE
Ra 5 kOhm 1xDA30/EL12/6L6 SE
Dimensions: 102 x 102 x 78 mm
 
Weight 2,8 kg
 

PUSH-PULL TRANSFORMER PRICES 2006

Item Reference Price EUR / each VAT 22%
Ü 234 4 kOhm 50W Ultra Linear 2-section Push-Pull Audio Output Transformer 139,00
Ü 250 2,5 kOhm 25-35 W Ultra Linear Push-Pull Audio Output Transformer 109,00
Ü 284 8 kOhm 12 - 18 W Ultra Linear Push-Pull Audio Output Transformer 98,00
Ü 302 5 kOhm 30 W Ultra Linear Push-Pull Audio Output Transformer 110,00
Ü 581 3,6 kOhm 20-25 W Ultra Linear Push-Pull Audio Output Transformer 99,00
Ü 662 4,5 kOhm 40-50 W Ultra Linear Push-Pull Audio Output Transformer 100,00
Ü 882 6,6 kOhm 50-70 W Ultra Linear Push-Pull Audio Output Transformer 145,00
HE-AT 2 2,9 kOhm 60-70 W Ultra Linear Push-Pull Audio Output Transformer 168,00
HE-AT 4 1,8 kOhm 90-100 W Ultra Linear Push-Pull Audio Output Transformer 198,00
HE-AT 6 180-200W High Power Push-Pull Audio Output Transformer n.a.
Ü-PPP 1 970 Ohm 20-30 W Parallel Push-Pull Audio Output Transformer 70,80
 

SINGLE- ENDED AUDIO OUTPUT TRANSFORMER PRICES 2006

Item Reference Price EUR / each VAT 22%
HE-ET 5 300-450-600 + 750  Ohms 30-50 W Single Ended Audio Output Transformer 130,00
HE-ET 6 340 + 600 Ohm 25 W Single Ended Audio Output Transformer with Bifiliar Winding 350,00  per pair!
HE-ET 20 1,0-1,25-1,5 Ohm + 2,1 kOhm 15-30 W Single Ended Audio Output Transformer 112,00
HE-ET 30 2,0-2,3-2,5-2,8 kOhm + 3 kOhm 15-25 W Single Ended Audio Output Transformer 112,00
HE-ET 40 3,5 - 4 kOhm + 5 kOhm 15-30 W Single Ended Audio Output Transformer 112,00
 
 
 

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