Hello everyone,
I have at home a pair of new Altec_Peerless_NL-69176-1 transformers. Obviously this is vintage material.
They look like input transformers with 600 or 1200 ohms on the primary and 600 ohms on the secondary.
They are very nice, big and heavy.
But then I read "HYBRID TRANS". What does that mean?
The frequency is perfect for the audio band: 20-20,000Hz.
I also don't understand the other data on the transformers.
Does anyone know these transformers, or even what they are used for, and where I could use them - if possible - in valve designs?
Thanks
I have at home a pair of new Altec_Peerless_NL-69176-1 transformers. Obviously this is vintage material.
They look like input transformers with 600 or 1200 ohms on the primary and 600 ohms on the secondary.
They are very nice, big and heavy.
But then I read "HYBRID TRANS". What does that mean?
The frequency is perfect for the audio band: 20-20,000Hz.
I also don't understand the other data on the transformers.
- Audio Level 1.5 watts
- 100mA D.C. max Zero Unbalance
- 500 V RMS test
Does anyone know these transformers, or even what they are used for, and where I could use them - if possible - in valve designs?
Thanks
https://en.wikipedia.org/wiki/Hybrid_coil
Typically used to split 2-wire audio (telephone) lines to 4-wire lines for inserting amplifiers in both directions. "bidirectional amplification"
The special feature is excellent balance.
I can't think of any Hi-Fi use today. They do have some use in M-S stereo conversion for record-cutting. A dollar's worth of chips will do that "perfectly" but there's always with a fetish for iron.
I suppose it could be a remarkably heavy and expensive interstage transformer, although 600r even 1200r is a heavy load for tubes. Maybe step-down to drive class B2 in a 400 watt pair of transmitter triodes.
Thank you for your reply.
Could I use them to route the audio signal from the cd player to 2 amplifiers?
Could I use them to route the audio signal from the cd player to 2 amplifiers?
