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AnonymousUser wrote:

Line level crossing or passive speaker level crossovers-same devil.

If you are planning to build a dedicated LF SET then the line level crossing vs. passive speaker level crossovers is not the same devil. With any seriously performing LF section any cap, indictor or resistor you put in the game after the transformer will very severally screw up dumping of the drivers and essentially the quality of bass. If you go line level then be advised that Melquiades is no-feedback and therefore there is not ways to put a line level filter in there without insertion lost. The 6C33C is kind of 8-10W tube and with 2-3 db of insertion lost you would need a fairly sensitive drivers, or preferably an array of the driver is you use horns.  To make it all properly it would not be cheap and easy solution.

Anyhow, if you build a dedicated LF Melquiades then if you wish I might sell you a pair of my leftover transformers. It is 6C33C against 8ohm, 1:8, 450mA gap, ~15H primary and I believe 23R DCR of secondary. The transformer at 220V/170mA on plate push full power down to 7.5Hz and roles off atop at ~900Hz. It is quite big and heavy to ship and it will be $400 per pair + shipping. I do not need this transformer as I have the identical against 5Ohm that is more precise match for my woofer towers.

Rgs,
Romy

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