Bottlehead Forum

General Category => General Discussion => Topic started by: jminassi on November 22, 2021, 04:48:10 PM

Title: Sennheiser HD650: Voltage Required to Drive
Post by: jminassi on November 22, 2021, 04:48:10 PM

Does anyone know the voltage necessary to drive the Sennheiser HD650 headphones to adequate listening levels?

Title: Re: Sennheiser HD650: Voltage Required to Drive
Post by: Paul Joppa on November 22, 2021, 05:26:37 PM

I googled "sennheiser hd 650 sensitivity" and got "The sensitivity of the Sennheiser HD 650 headphones is 105.10 dB/V SPL by the voltage..."

The big question is "how loud is adequate?"  For loudspeakers, a fairly normal listening level is 82dB; for typical well-recorded music you'd want another 14dB headroom, so 96dB is an answer, which corresponds to 0.35 volts rms.

Title: Re: Sennheiser HD650: Voltage Required to Drive
Post by: jminassi on November 22, 2021, 08:20:41 PM

Thank you Paul!