mjw21a
Super Member
Where are you based? What sort of budget are we looking at, but of course second hand would be the go once you narrow down the choices.
Though you are looking to use the Oldchen SEP so they need to be fairly efficient. You could do what mjw21a has done in one of his systems, He used some old speaker cabs and fitted them with these I think https://www.parts-express.com/dayton-audio-ps220-8-8-point-source-full-range-neo-driver--295-346
So if you grabbed a pair of those and grab an old decent vintage speaker cabs that did originally use 8" drivers the fitting won't be too difficult.
I might not be much help here as I'm in Australia, and don't have a lot of experience with what might be available there on the secondhand market, and my experiences are limited in this area. Maybe look at what others are running with there Oldchen SEP's
Yes, the Dayton PS220-8 drivers sound absolutely amazing with this amp. It outperforms my B&W DM16 speakers with my higher powered Push/Pull amp. Cheaper too.