Input sensitivity of your amp determines where on the volume dial you're going to reach full output power with most pre-amps which are set to about 1.5 volts of input voltage to achieve full rated output out of your amp at half volume. The lower the sensitivity of your amp, ie: the "higher" the number, the higher you have to turn the volume up to achieve full power. Some amps have such low sensitivity that the pre-amp goes into clipping before full power can be reached. Hence the prior stated scenario. A through the back door safety measure by some amp manufacturers in an effort to reduce warranty claims imo.
Final verdict with amplifier
Hey all,
I recently posted how my Parasound amp wasn't providing much of an improvement on my Klipsch WF-34 speakers, which are rated at 125W RMS, and 300W peak, and my amp being 205W per channel. Most of the responses that I got was that I needed a decent preamp to integrate into my system. Well recently a buddy gave me his old Carver TFM 55 amplifier, rated at 380 Watts per channel 600 Watts mono, so I decided to give it a whirl. I know that I have to be careful cuz that much power could blow the fecal matter out of my speakers. Well I hooked it up BOTH WAYS. It was slightly better on stereo, and mono was a big difference, but even cranked it didn't harm my speakers. why is that? And how is a preamp supposed to help any of that?
I recently posted how my Parasound amp wasn't providing much of an improvement on my Klipsch WF-34 speakers, which are rated at 125W RMS, and 300W peak, and my amp being 205W per channel. Most of the responses that I got was that I needed a decent preamp to integrate into my system. Well recently a buddy gave me his old Carver TFM 55 amplifier, rated at 380 Watts per channel 600 Watts mono, so I decided to give it a whirl. I know that I have to be careful cuz that much power could blow the fecal matter out of my speakers. Well I hooked it up BOTH WAYS. It was slightly better on stereo, and mono was a big difference, but even cranked it didn't harm my speakers. why is that? And how is a preamp supposed to help any of that?