Audio Transformers

Audio transformers for use in 100V line and telecommunications equipment. Our range includes bridging and coupling types, plus 100V line EI core and toroidal types for PA transformer requirements.

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Designed to allow 8 ohm speakers to be utilised in a 100V line public address speaker system. Ideal for converting existing systems to 100V line or where 8 ohm speakers have been specified for a PA installation.

100V Line to 8 Ohm Speaker Transformer Adapter

MB1140
Designed to allow 8 ohm speakers to be utilised in a 100V line public address speaker system. Ideal for converting existing systems to 100V line or where 8 ohm speakers have been specified for a PA installation.
High power toroidal transformer for audio use. Input and output windings can be reversed or be configured differently i.e. Input windings series connected for 100V and output windings paralleled for 4 Ohm.

100W 100V Line 4-16 Ohm Audio Toroidal Transformer

M1124
High power toroidal transformer for audio use. Input and output windings can be reversed or be configured differently i.e. Input windings series connected for 100V and output windings paralleled for 4 Ohm.
These high power, high efficiency toroidal transformers are designed for matching 8 ohm speakers to 100V line amplifier systems.

100W 100V Line PA Audio Transformer

M1140
These high power, high efficiency toroidal transformers are designed for matching 8 ohm speakers to 100V line amplifier systems.
High quality, high performance 100V line audio transformers. All models are wound on professional grade grain orientated steel core for extended frequency response. Designed for use in high grade constant voltage 100V and 70V PA Systems. 60 Watt 100V

10-60W 100V Line PA EI Core Transformer

M1136A
High quality, high performance 100V line audio transformers. All models are wound on professional grade grain orientated steel core for extended frequency response. Designed for use in high grade constant voltage 100V and 70V PA Systems. 60 Watt 100V
Impedance: 10kΩ / 10kΩ Freq. Response: 20Hz - 30kHz Insertion Loss: -0.5dB Weight: 63g

10k Ohm / 10k Ohm Bridging Input Transformer

M0710
Impedance: 10kΩ / 10kΩ Freq. Response: 20Hz - 30kHz Insertion Loss: -0.5dB Weight: 63g
Impedance:10k ohm / 2 ohm CT Fly lead length:9mm PCB hole size:0.5mm

10k Ohm / 2k Ohm Audio Coupling Transformer

M0212B
Impedance:10k ohm / 2 ohm CT Fly lead length:9mm PCB hole size:0.5mm
High power toroidal transformer for audio use. Input and output windings can be reversed.

150W 100V Line 4-16 Ohm Audio Toroidal Transformer

M1124A
High power toroidal transformer for audio use. Input and output windings can be reversed.
Impedance: 1k&ampOmega CT / 8&ampOmega Freq. Response: 300Hz-3kHz &plusmn2.5dB Rated Power: 450mW Primary DC Resistance: 100&ampOmega &plusmn10% Secondary DC Resistance: 0.7&ampOmega &plusmn10% Fly Lead Length: 10mm

1k Ohm / 8 Ohm Audio Coupling Transformer

M0216
Impedance: 1k&Omega CT / 8&Omega Freq. Response: 300Hz-3kHz ±2.5dB Rated Power: 450mW Primary DC Resistance: 100&Omega ±10% Secondary DC Resistance: 0.7&Omega ±10% Fly Lead Length: 10mm
High quality, high performance 100V line audio transformers. All models are wound on professional grade grain orientated steel core for extended frequency response. Designed for use in high grade constant voltage 100V and 70V PA Systems.

20W 100V Line PA EI Core Speaker / Audio Transformer

M1120
High quality, high performance 100V line audio transformers. All models are wound on professional grade grain orientated steel core for extended frequency response. Designed for use in high grade constant voltage 100V and 70V PA Systems.
These high power, high efficiency toroidal transformers are designed for matching 8 ohm speakers to 100V line amplifier systems.

300W 100V Line PA Audio Transformer

M1160
These high power, high efficiency toroidal transformers are designed for matching 8 ohm speakers to 100V line amplifier systems.
30 Watt 100V line speaker transformer with multi-tapped primary and secondary taps to suit 4 and 8 ohm speakers.

30W 100V Line PA EI Core Audio Transformer

M1126A
30 Watt 100V line speaker transformer with multi-tapped primary and secondary taps to suit 4 and 8 ohm speakers.
Impedance: 3k&ampOmega CT / 3k&ampOmega Freq. Response: 300Hz-3kHz &plusmn2.5dB Rated Power: 450mW Primary DC Resistance: 220&ampOmega &plusmn10% Secondary DC Resistance: 270&ampOmega &plusmn10% Fly Lead Length: 7mm

3k Ohm / 3k Ohm Audio Coupling Transformer

M0222
Impedance: 3k&Omega CT / 3k&Omega Freq. Response: 300Hz-3kHz ±2.5dB Rated Power: 450mW Primary DC Resistance: 220&Omega ±10% Secondary DC Resistance: 270&Omega ±10% Fly Lead Length: 7mm
High quality, high performance 100V line audio transformers. All models are wound on professional grade grain orientated steel core for extended frequency response. Designed for use in high grade constant voltage 100V and 70V PA Systems. 40 Watt 100V l

40W 100V Line PA EI Core Audio Transformer

M1130
High quality, high performance 100V line audio transformers. All models are wound on professional grade grain orientated steel core for extended frequency response. Designed for use in high grade constant voltage 100V and 70V PA Systems. 40 Watt 100V l
Used with 100v or 70V line PA systems. This enables the user to tap from the line the required level. Taps are spaced in 4.5db steps. Power rating 40 watts RMS.

40W Attenuator 100V Line Audio Transformer

M0440
Used with 100v or 70V line PA systems. This enables the user to tap from the line the required level. Taps are spaced in 4.5db steps. Power rating 40 watts RMS.
Impedance: 500&ampOmega CT / 8&ampOmega Freq. Response: 300Hz-3kHz &plusmn2.5dB Rated Power: 450mW Primary DC Resistance: 54&ampOmega &plusmn10% Secondary DC Resistance: 0.8&ampOmega &plusmn10% Fly Lead Length: 10mm

500 Ohm / 8 Ohm Audio Coupling Transformer

M0226
Impedance: 500&Omega CT / 8&Omega Freq. Response: 300Hz-3kHz ±2.5dB Rated Power: 450mW Primary DC Resistance: 54&Omega ±10% Secondary DC Resistance: 0.8&Omega ±10% Fly Lead Length: 10mm
Impedance: 600Ω / 600Ω Freq. response: 20Hz - 30kHz Insertion loss: -0.5dB Max level: +20dBm @ 20Hz Weight: 63g

600 Ohm / 600 Ohm Bridging Input Transformer

M0709
Impedance: 600Ω / 600Ω Freq. response: 20Hz - 30kHz Insertion loss: -0.5dB Max level: +20dBm @ 20Hz Weight: 63g
Used for coupling audio circuits. These transformers help prevent earth loops, hum etc. Essential coupling device where DC isolating is required. Housed in a mu-metal can to guard against stray hum fields.

600 Ohm / 10k Ohm Shielded Microphone Transformer

M0705
Used for coupling audio circuits. These transformers help prevent earth loops, hum etc. Essential coupling device where DC isolating is required. Housed in a mu-metal can to guard against stray hum fields.
Impedance: 600 Ohm line, 600 Ohm or 150 Ohm equip. urns Ratio: 1:1 Max Level: +20dBm @ 200Hz Insertion Loss: 1.8dB max @ 0dBm Frequency Response: 300Hz - 3kHz Return Loss: >15dB, 300Hz - 3kHz Max Unbalanced DC: 80mA Proof Test: 3.5kV RMS Dimension: 35L x 17H x 29W Weight: 50 gms PCB hole size: 1.2mm

600 Ohm / 600 Ohm Low Prof Telephone Isolation Transformer

M1010
Impedance: 600 Ohm line, 600 Ohm or 150 Ohm equip. urns Ratio: 1:1 Max Level: +20dBm @ 200Hz Insertion Loss: 1.8dB max @ 0dBm Frequency Response: 300Hz - 3kHz Return Loss: >15dB, 300Hz - 3kHz Max Unbalanced DC: 80mA Proof Test: 3.5kV RMS Dimension: 35L x 17H x 29W Weight: 50 gms PCB hole size: 1.2mm
Impedance: 600 Ohm line, 600 Ohm or 150 Ohm equip. Turns Ratio: 1:1 Max Level: +20dBm @ 200Hz Insertion Loss: 1dB max @ 0dBm Frequency Response: 200Hz - 3KHz Return Loss: >15dB, 200Hz - 3kHz Max Unbalanced DC: 5mA Proof Test: 3.5kV RMS Dimension: 26L x 21H x 19W Weight: 25 gms PCB hole size: 1.3mm

600 Ohm / 600 Ohm Mini Telephone Isolation Transformer

M1005
Impedance: 600 Ohm line, 600 Ohm or 150 Ohm equip. Turns Ratio: 1:1 Max Level: +20dBm @ 200Hz Insertion Loss: 1dB max @ 0dBm Frequency Response: 200Hz - 3KHz Return Loss: >15dB, 200Hz - 3kHz Max Unbalanced DC: 5mA Proof Test: 3.5kV RMS Dimension: 26L x 21H x 19W Weight: 25 gms PCB hole size: 1.3mm
Impedance: 600 Ohm line, 600 Ohm equip. Turns Ratio: 1:1 Max Level: 0dBm Insertion Loss: 1.4dB max @ 1kHz Return Loss: >16dB @ 300Hz - 3.5kHz Proof Test: 3.0kV AC 1 minute Dimension: 12L x 11H x 11W Weight: 5 gms PCB hole size: 0.7mm

600 Ohm / 600 Ohm Mini Telephone Isolation Transformer

M1020
Impedance: 600 Ohm line, 600 Ohm equip. Turns Ratio: 1:1 Max Level: 0dBm Insertion Loss: 1.4dB max @ 1kHz Return Loss: >16dB @ 300Hz - 3.5kHz Proof Test: 3.0kV AC 1 minute Dimension: 12L x 11H x 11W Weight: 5 gms PCB hole size: 0.7mm
Impedance: 600 Ohm line matching Turns Ratio: 1:1 Insertion Loss: 4.7dB max @ 2kHz Frequency Response: 200Hz - 4kHz Return Loss: &gt15dB @ 200Hz - 4kHz Proof Test: 5.5kV RMS Max Unbalanced DC: 100&microA Dimension: 18L x 14H x 18W Weight: 13 gms PCB hole size: 0.7mm

600 Ohm / 600 Ohm Potted Telephone Isolation Transformer

M1015
Impedance: 600 Ohm line matching Turns Ratio: 1:1 Insertion Loss: 4.7dB max @ 2kHz Frequency Response: 200Hz - 4kHz Return Loss: >15dB @ 200Hz - 4kHz Proof Test: 5.5kV RMS Max Unbalanced DC: 100µA Dimension: 18L x 14H x 18W Weight: 13 gms PCB hole size: 0.7mm
Used for coupling audio circuits. These transformers help prevent earth loops, hum etc. Essential coupling device where DC isolating is required. Housed in a mu-metal can to guard against stray hum fields.

600 Ohm / 600 Ohm Shielded Bridging Transformer

M0707
Used for coupling audio circuits. These transformers help prevent earth loops, hum etc. Essential coupling device where DC isolating is required. Housed in a mu-metal can to guard against stray hum fields.
Impedance: 600 Ohm line, 600 Ohm equip Turns Ratio: 1:1 Max Level: 0dBm @ 300Hz Insertion Loss: 1dB max @ 0dBm Frequency Response: 300Hz - 10kHz Return Loss: >15dB, 300Hz - 5kHz Max Unbalanced DC: 60mA Proof Test: 3.5kV RMS Dimension: 41L x 30H x 33W Weight: 153 gms PCB hole size: 1.5mm

600 Ohm / 600 Ohm Telephone Isolation Transformer

M1000
Impedance: 600 Ohm line, 600 Ohm equip Turns Ratio: 1:1 Max Level: 0dBm @ 300Hz Insertion Loss: 1dB max @ 0dBm Frequency Response: 300Hz - 10kHz Return Loss: >15dB, 300Hz - 5kHz Max Unbalanced DC: 60mA Proof Test: 3.5kV RMS Dimension: 41L x 30H x 33W Weight: 153 gms PCB hole size: 1.5mm
5 Watt 100V line speaker transformers with tapped primary, and secondary to suit 8 Ohm speakers.

8 Ohm to 0.33W - 5W 100V Line Speaker / Audio Transformer

M1112
5 Watt 100V line speaker transformers with tapped primary, and secondary to suit 8 Ohm speakers.
15 W 100V line speaker transformer with multi-tapped primary and secondary to suit 8 Ohm speakers.

8 Ohm to 1.25W - 15W 100V Line PA Speaker / Audio Transformer

M1115
15 W 100V line speaker transformer with multi-tapped primary and secondary to suit 8 Ohm speakers.
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