Spatial Audio Raven Preamp

Don,

It is loud but not screamingly loud.  I just wanted too make sure I did not have a problem.  My speakers have a measured sensitivity of 91.5.  It is more than loud enough for me.  Thanks for the response.

Richard

I'd be curious to know your amps input impedance as at or near max attenuation would be very loud.

Wig

Any info on your power amps? Input sensitivity (volts RMS to clip the amp) and input impedance should tell the tale.

Transistor amps (with feedback) are typically 1~2 volts to clip amp, and input impedance is typically 10K to 22K.

The Bruno Putzey Class D modules are designed so they need they need about 10V drive and an input impedance of 6300 ohms. This non-standard input is intentional; it gives the third-party amp designer the freedom to design an input stage that has the tone color they want: op-amp, solid-state discrete, or vacuum tube.

My speakers are 89dB sensitivity and the volume on my Raven preamp at a "comfortable" listening level is 35.  Need those amp specs or something is amiss.

The Bruno Putzey Class D modules are designed so they need they need about 10V drive and an input impedance of 6300 ohms

Actually if you want to be safe you should expect to drive 2000 Ohms rather than 6K or higher. Typically an input buffer will provide roughly 12dB of gain and allow an input impedance of more like 47KOhms. That would put the total gain in the region of 22-25dB which is plenty for most speakers.