divie23
Head-Fier
- Joined
- Aug 25, 2001
- Posts
- 71
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- 0
Hey Guys,
I've just been testing a DIY CMoy+Buffer amp I'd made a while ago now, only got round to it after getting back from university.
When driving grados the amp can drive them to incredible levels, I mean 11 'o'clock is the maximum I'd like to go before I start worrying about damaging my ears. However, plug my HD580s in there, blast the volume knob to full and although the listening volume is still higher than I'd like to go, I dont't get the same sense of power from the amp as I do from the Grados.
I can appreciate that the HD580s are way harder to drive due to their higher impedence, but is this huge difference in volume as a result of poor amplifier design or is it to be expected when driving headphones with varying impedences with the same amp??
Thanks for any help anyone could offer!
Divie
PS the amp is an OPA637 coupled with 3 paralled BUF634s inside the feedback loop per channel. Hope that helps.
I've just been testing a DIY CMoy+Buffer amp I'd made a while ago now, only got round to it after getting back from university.
When driving grados the amp can drive them to incredible levels, I mean 11 'o'clock is the maximum I'd like to go before I start worrying about damaging my ears. However, plug my HD580s in there, blast the volume knob to full and although the listening volume is still higher than I'd like to go, I dont't get the same sense of power from the amp as I do from the Grados.
I can appreciate that the HD580s are way harder to drive due to their higher impedence, but is this huge difference in volume as a result of poor amplifier design or is it to be expected when driving headphones with varying impedences with the same amp??
Thanks for any help anyone could offer!
Divie
PS the amp is an OPA637 coupled with 3 paralled BUF634s inside the feedback loop per channel. Hope that helps.