davidsh
Headphoneus Supremus
- Joined
- Oct 4, 2012
- Posts
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Well, sonic defender seems to be a very loud listener (or something
) so perhaps a speaker amp isn't a bad idea
You should just know that most vintage receivers have added resistors for the headphone output, easily lowering the volume by a factor of ten depending on headphones. Often a good thing, yet it makes a 10W 32 ohms speaker amp range from some 700mW to some 1.5 W with the planars. Of course it all depends on a lot of factors, just saying the speaker tabs are more powerful.
I barely think the 12dB attenuation in my emotiva mini-x is enough, yet effectively it probably cuts the output down to around 1W at around 32 ohms, based on emotiva specs. Oth, when listening with speakers the volume pot goes much higher than with even HE.5LE/560. Just shows how skewed power requirenments are in the headphone world compared to speaker world. After all, the amp doesn't distort at volumes much higher than what I'll be listening to with attenuated headphones.
Think about it. 1W is recommended for HE-500. That equals almost 120dB, but let's say the HE-500 is out of spec and 1W only gets it to 115 dB (equal to 85dB/mW, HE-500 is specced at 89dB/mW). That's comparable to a 300 watt speaker amp for a relatively easy to drive speaker at 90dB/W, though most in speaker world agree 50 good watts is probably enough for said speaker, if my estimations ain't off.
You should just know that most vintage receivers have added resistors for the headphone output, easily lowering the volume by a factor of ten depending on headphones. Often a good thing, yet it makes a 10W 32 ohms speaker amp range from some 700mW to some 1.5 W with the planars. Of course it all depends on a lot of factors, just saying the speaker tabs are more powerful.
I barely think the 12dB attenuation in my emotiva mini-x is enough, yet effectively it probably cuts the output down to around 1W at around 32 ohms, based on emotiva specs. Oth, when listening with speakers the volume pot goes much higher than with even HE.5LE/560. Just shows how skewed power requirenments are in the headphone world compared to speaker world. After all, the amp doesn't distort at volumes much higher than what I'll be listening to with attenuated headphones.
Think about it. 1W is recommended for HE-500. That equals almost 120dB, but let's say the HE-500 is out of spec and 1W only gets it to 115 dB (equal to 85dB/mW, HE-500 is specced at 89dB/mW). That's comparable to a 300 watt speaker amp for a relatively easy to drive speaker at 90dB/W, though most in speaker world agree 50 good watts is probably enough for said speaker, if my estimations ain't off.