Bgrazman, I think mostly the 2nd voice coils, even though I had at least 120 high db hours on the Ref 3's already.
Gallo Ref3 Subwoofer Amplifier
I have had my Gallo Ref3 speakers for a couple of months now. As some of you promised, they sound WAY better after a few tens of hours played at high levels. They are as good as any speakers I have heard overall and the best I have heard in several areas. I have been driving them with a big high-current solid state amp (NAD S-200). Also, I have been using them with a REL Storm III subwoofer. With this setup the bass has been excellent. On a par with my friend's big Fried transmission line speakers. However, I could not resist purchasing the Gallo Reference Subwoofer amplifier when it became available at my dealer (Ahead Stereo in L.A.)
For the past couple of weeks I have been listening to the Gallo Ref3's with the second voice coil driven. To be honest, I have been a bit disappointed. I connected a single-ended output from my preamp to the Gallo subamp. I set up the subamp 0 degrees phase (highest bass gain at this setting), 40 Hz low-pass cut-off, 0 dB bass boost. When I turn off the REL, I can definitely hear more mid to low bass with the subamp driving the second coils. But it does not deliver the bass slam of a subwoofer. When I turn the subamp way up I start to hear undesirable midrange coloration and reduced sound stage depth. If I had to choose between the REL Storm or the Gallo subamp there is no question that I would choose the REL. I am currently running the Gallo speakers with the Gallo subamp at moderate gain and the REL Storm at about the same gain as before.
Summary of my impressions:
The Gallo Ref3 speakers integrate very well with a high-end musical subwoofer like the REL Storm. I would strongly recommend this route over the Gallo subamp. If you are using a lower powered tube amp, the Gallo subamp may make more sense. But if you are crazy (like me) or have lots of money (not like me), the combination of both the subamp and the subwoofer is amazing.
For the past couple of weeks I have been listening to the Gallo Ref3's with the second voice coil driven. To be honest, I have been a bit disappointed. I connected a single-ended output from my preamp to the Gallo subamp. I set up the subamp 0 degrees phase (highest bass gain at this setting), 40 Hz low-pass cut-off, 0 dB bass boost. When I turn off the REL, I can definitely hear more mid to low bass with the subamp driving the second coils. But it does not deliver the bass slam of a subwoofer. When I turn the subamp way up I start to hear undesirable midrange coloration and reduced sound stage depth. If I had to choose between the REL Storm or the Gallo subamp there is no question that I would choose the REL. I am currently running the Gallo speakers with the Gallo subamp at moderate gain and the REL Storm at about the same gain as before.
Summary of my impressions:
The Gallo Ref3 speakers integrate very well with a high-end musical subwoofer like the REL Storm. I would strongly recommend this route over the Gallo subamp. If you are using a lower powered tube amp, the Gallo subamp may make more sense. But if you are crazy (like me) or have lots of money (not like me), the combination of both the subamp and the subwoofer is amazing.