Dynaco St35 /SCA-35 Output Transformer Upgrade (Pair).

The transformers are suitable for upgrading dynaco ST35 /SCA-35 amplifier or build a project based on ST35 topology. Please note that the transformers are not a drop through replacement. The transformers are built in a bigger core to ensure improved overall performance.

TECHNICAL FEATURES:

Primary Impedance: 8K (Anode to Anode)

Ultralinear :23%

Secondary Impedance: 4/8 Ω

Primary Dc resistance: 276 Ohm

Primary Inductance :305H@17Vrms 50hz

Max Dc current per tube :160mA (Anode to CT)

Maximum output power : 18W

Frequency Response: 5hz-60Khz -3bB

Core size :EI75/40

Lead wire lengths: 400mm

Color code of lead wires:

    Anode 1:White

    Anode 2:Black

    UL1:Grey

    UL2:Orange

    B+:Red

    0:Blue

    4Ohm:Yellow

    8 Ohm:Green

Core material: M6 Grain Oriented Silicon Steel made in Europe.

Lamination thickness: 0.35mm

Dynaco ST70 Output Transformer Upgrade (Pair).

The transformers are suitable for upgrading dynaco ST70 amplifier or build a project based on ST70 topology.

Please note that the transformers are not a drop through replacement.

The transformers are built in a bigger core area with more interleaving between primaries and secondaries to ensure improved overall performance , lower distortion and wider frequency response.

TECHNICAL FEATURES:

Primary Impedance: 4k3(Anode to Anode)

Secondary Impedance: 4/8/16 Ω

Ultralinear taps : 33% (or any percentage on request)

Primary Inductance Lp=100H @17Vrms/50hz 

Primary Dc resistance: 170 Ohm

Max Dc current per tube :240mA (Anode to CT)

Output power : 60W 

Frequency Response: 10Hz-48Khz -3dB

Core material: high quality silicon steel made in Europe

Core size : EI96 /60 Lamination thickness :0.35mm

Dimensions :129mmx97mmx86mm

Weight :3.6Kgr per transformer

Winding Wire: Double coated Grade 2 enamelled copper wire made in Europe Wound in Precision Multi section winding, for reduced leakage inductance, low parasitic capacitance and high dielectric strength.

Mounting: vertical placement.

Dynaco St35 /SCA-35 Output Transformer Upgrade (Pair).

The transformers are suitable for upgrading dynaco ST35 /SCA-35 amplifier or build a project based on ST35 topology. Please note that the transformers are not a drop through replacement. The transformers are built in a bigger core to ensure improved overall performance.

TECHNICAL FEATURES:

Primary Impedance: 8K (Anode to Anode)

Ultralinear :23%

Secondary Impedance: 4/8 Ω

Primary Dc resistance: 276 Ohm

Primary Inductance :305H@17Vrms 50hz

Max Dc current per tube :160mA (Anode to CT)

Maximum output power : 18W

Frequency Response: 5hz-60Khz -3bB

Core size :EI75/40

Lead wire lengths: 400mm

Color code of lead wires:

    Anode 1:White

    Anode 2:Black

    UL1:Grey

    UL2:Orange

    B+:Red

    0:Blue

    4Ohm:Yellow

    8 Ohm:Green

Core material: M6 Grain Oriented Silicon Steel made in Europe.

Lamination thickness: 0.35mm

TECHNICAL FEATURES:

Primary Impedance: 8K5 (Anode to Anode)

Secondary Impedance: 4/8 Ω

Ultralinear taps : 25%

Primary Inductance Lp=133H @17Vrms/50hz

Leakage inductance : 6mH

Primary Dc resistance: 186 Ohm

Max Dc current per tube :120mA (Anode to CT)

Maximum output power 10W

Frequency Response: 12hz-54Khz -1bB at 1W output power.

Lead wire lengths: 400mm

Color code of lead wires

  White :Anode 1

  Black:Anode 2

  Red :B+

  Gray :Ultralinear1

  Orange:Ultralinear2

  Brown :o

  Yellow:4 Ohm

  Green :8 Ohm

Core material: high quality , low loss silicon steel made in Europe. 

Core size :EI60/30.

Lamination thickness: 0.50mm 

Dimensions: 62mx51.5mmx55mm (86mm foot distance) 

Footprint hole 5x6mm

Weight: 750gr per transformer

Winding Wire: Double coated Grade 2 enamelled copper wire Wound in Precision Multi section winding, for reduced leakage inductance and high dielectric strength.

TECHNICAL FEATURES:

Primary Impedance: 8K (Anode to Anode)

Secondary Impedance: 8Ω

Primary Inductance Lp=350H @230Vrms/50hz

Leakage inductance : 5.6mH/1Khz

Primary Dc resistance:137 Ohm

Max Dc current per tube :350mA (Anode to CT)

Maximum output power : 100W

Frequency Response: 4Hz-77Khz -3bB (test condition 2x6L6 triode mode, 1.5W output/8R)

core material: high quality  silicon steel, made in Europe

core size : EI120 /60

Lamination thickness :0.35mm

dimensions :120mmx105mmx120mm

weight :5.6Kgr per transformer

Winding method :layer wound with insulation insertion between every layer.

Winding Wire: Double coated Grade 2 enamelled copper wire made in Europe, wound in Precision Multi section winding, for reduced leakage inductance, low parasitic capacitance and high dielectric strength.

Mounting: vertical

TECHNICAL FEATURES:

Primary Impedance: 16K (Anode to Anode) or 21K (depending on the secondary load)

Secondary Impedance: 6 Ω or 8Ω

Primary Inductance Lp=350H @17Vrms/50hz

Leakage inductance : 150mH Primary

Dc resistance:180 Ohm

Max Dc current per tube :350mA (Anode to CT)

Maximum output power : 100W

Frequency Response: 7.2Hz-62Khz -3bB

core material: high quality grain oriented silicon steel (19000Gauss) annealed, made in Europe

core size : EI120 /70

Lamination thickness :0.35mm

dimensions :120mmx105mmx120mm

weight :6.6Kgr per transformer

Winding method :layer wound with insulation insertion between every layer.

Winding Wire: Double coated Grade 2 enamelled copper wire made in Europe, wound in Precision Multi section winding, for reduced leakage inductance, low parasitic capacitance and high dielectric strength.

Mounting: vertical or horizontal placement

TECHNICAL FEATURES:

Primary Impedance: 4k5 (Anode to Anode)

Secondary Impedance: 4/8 Ω (all secondaries are independed and the user can wire the transformer's secondary to have 4Ohm or 8Ohm load match ,without wasting any part of secondary , according to the schematic provided with the transformers)

Ultralinear taps : 42%

Primary Inductance Lp=91H @17Vrms/50hz

Leakage inductance : 12mH

Primary Dc resistance: 165 Ohm

Max Dc current per tube :240mA (Anode to CT)

Maximum output power : 60W

Frequency Response: 10Hz-120Khz -3bB

Core material: high quality silicon steel made in Europe

Core size : EI96 /50

Lamination thickness :0.35mm

Dimensions :110mmx96mmx83mm

Weight :2.95Kgr per transformer

Winding method :layer wound with insulation insertion between every layer.

Winding Wire: Double coated Grade 2 enamelled copper wire made in Europe Wound in Precision Multi section winding, for reduced leakage inductance, low parasitic capacitance and high dielectric strength.

Mounting: horizontal or vertical placement

Wide bandwidth, push pull ultralinear Output transformers,60W (pair)

Designed for EL34, KT88,6550 (or others with similar impedance) push-pull amplifiers

TECHNICAL FEATURES: Primary Impedance: 4k3(Anode to Anode)

Secondary Impedance: 4/8/16 Ω

ultralinear taps : 42%

Primary Inductance Lp=100H @17Vrms/50hz

Leakage inductance : 6mH

Primary Dc resistance: 150 Ohm

Max Dc current per tube :240mA (Anode to CT)

Maximum output power : 60W Frequency Response: 10Hz-48Khz -3dB

Core material: high quality silicon steel made in Europe

Core size : EI96 /60

Lamination thickness :0.35mm

Dimensions :129mmx97mmx86mm

Weight :3.42Kgr per transformer

Winding method :layer wound with insulation insertion between every layer.

Winding Wire: Double coated Grade 2 enamelled copper wire made in Europe

Wound in Precision Multi section winding, for reduced leakage inductance, low parasitic capacitance and high dielectric strength.

Mounting: horizontal placement.

TECHNICAL FEATURES:

Primary Impedance: 9K (Anode to Anode)

Secondary Impedance: 8 Ω

Ultralinear tap:50%

Primary Inductance Lp=147H @17Vrms/50hz

Leakage inductance : 6mH

Primary Dc resistance: 172 Ohm

Max Dc current per tube :170mA (Anode to CT)

Maximum output power : 15W

Frequency Response: 10Hz-96Khz -3dB

Core material: high quality grain oriented silicon steel M6 (19Kilogauss)

Core size : EI75/30,

Lamination thickness /0.35mm

Weight 1.2Kgr per transformer

Dimensions : 75mmx64mmx72.5mm

Winding Wire: Double coated Grade 2 enamelled copper wire Wound in Precision Multi section winding, for reduced leakage inductance and high dielectric strength.

Mounting: open frame clamps suitable for vertical or horizontal placement