Sennheiser HD650: Voltage Required to Drive

jminassi · 1166

0 Members and 1 Guest are viewing this topic.

Offline jminassi

  • Full Member
  • ***
    • Posts: 111
on: November 22, 2021, 04:48:10 PM
Does anyone know the voltage necessary to drive the Sennheiser HD650 headphones to adequate listening levels?



Offline Paul Joppa

  • Global Moderator
  • Hero Member
  • *****
    • Posts: 5822
Reply #1 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.

Paul Joppa


Offline jminassi

  • Full Member
  • ***
    • Posts: 111
Reply #2 on: November 22, 2021, 08:20:41 PM
Thank you Paul!