Atlas Sound makes high power line transformers, but the retail cost is too expensive compared to real push pull OPT's.
They do, however, show up on Ebay as cheap surplus when someone overbought on a construction project. I got a sealed case of six HT87, which is a 15 watt, 30 Hz to15 Khz, line transformer for $24, including shipping, on eBay a few years back. The Atlas Sound trannies have 4 and 8 ohm secondaries, at least mine do.
Win W5JAG
They do, however, show up on Ebay as cheap surplus when someone overbought on a construction project. I got a sealed case of six HT87, which is a 15 watt, 30 Hz to15 Khz, line transformer for $24, including shipping, on eBay a few years back. The Atlas Sound trannies have 4 and 8 ohm secondaries, at least mine do.
Win W5JAG
Atlas Sound T10 are what I have on hand. I bought them very cheap from a local pro-audio supply place that did sound for larger offices, churches, etc. I've had them at least ten years at this point. I remember not reaching much lower than maybe 60hz with them but them having great overall push-pull performance up to a few watts.
https://www.atlasied.com/vcf/4129/ATS004129A-Line-Matching-Transformers-T-Series-Datasheet.pdf
https://www.atlasied.com/vcf/4129/ATS004129A-Line-Matching-Transformers-T-Series-Datasheet.pdf