I agree with the Gallo Sub Amp recommendation. Unless you have a preamp and power amp combo that can replicate the goodies found in the Gallo Sub Amp.
I am currently driving the 2nd voice coil of my Gallo Ref. 3.1s using an Emotiva UMC-1 preamp and a Sherbourn power amp with 325 watts/ch. This setup works very well, the UMC-1 gives me an 11 band equalizer for the sub channel as well as variable crossover freq. and selectable slope (12 or 24 db/octave).
In your case, the Gallo Sub Amp would be the way to go since your preamp does not provide such amenities. And you will most definitely enjoy the sound, the Sub Amp makes these truly full-range speakers...
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I am currently driving the 2nd voice coil of my Gallo Ref. 3.1s using an Emotiva UMC-1 preamp and a Sherbourn power amp with 325 watts/ch. This setup works very well, the UMC-1 gives me an 11 band equalizer for the sub channel as well as variable crossover freq. and selectable slope (12 or 24 db/octave).
In your case, the Gallo Sub Amp would be the way to go since your preamp does not provide such amenities. And you will most definitely enjoy the sound, the Sub Amp makes these truly full-range speakers...
-RW-