Hi Chuck, Thiel 3.5's. These speakers are 89db at 1 watt/meter and a use an active equalizer with an in-put impdeance of 91 KOhms and an out-put impdeance of 130 Ohms (RCA's only) that draws up to 12 db of boost below 70Hz. Thiel recommends between 50-250 watts per channel, but, that is based on an amps 8 Ohm rating and ASSUMING that the amp can double down. That boost coupled with the 4 Ohm nomial/minimal rating is what concerns me. If I'm correct, and assuming that the speaker could regularly draw 15 watts that after boost it could be drawing 240 watts. Knowing how amps could actually perform in it's intended use could narrow my choices down to a reasonable number. Thiel recommends c-j amongst others and c-j claims that their amps work with Thiel, but, I think it's fair to suggest that I deserve more concrete answers. The equalizer also adds a bit of complexity with regard to impdeance matching and to the fact that it doesn't offer balanced in and out between pre and amp, but, I think this might be less of a concern, unless of course any one has other ideas. I'm open to suggestions.
