Got my SC-IV's in 1995. I had been using a sub with the predecessor spkr (Quad ESL-63), but reading the reviews and auditioning the SC-IV's a few times, the need was borderline. Around the same time period Carver released his Sunfire amp, offering the option for bi-wiring - drive the woofer with the 'zero' impedance "voltage" output, and the mid/high crossover circuit from the "current" output, which apparently has a 1-ohm output impedance. The effect is to boost the lows a bit (2 dB or so).
I have used this combination since '95, no sub, and pulled into the room a bit, away from rear wall reflections. At that price, hard to go wrong! Good luck.
I have used this combination since '95, no sub, and pulled into the room a bit, away from rear wall reflections. At that price, hard to go wrong! Good luck.