Just received the pdf files , very nice design-can't wait to fire up the soldering iron
All I need now is time
Up to this point I have been using a modified Szekeres MOSFET Follower See the HeadWize project library for details of the circuit) as my Headphone Amp for my Grados.
A very simple design but difficult to get "just right" , very power supply dependant.
Hopefuly this will whip its ###
Thanks Marcello
Rick
All I need now is time
Up to this point I have been using a modified Szekeres MOSFET Follower See the HeadWize project library for details of the circuit) as my Headphone Amp for my Grados.
A very simple design but difficult to get "just right" , very power supply dependant.
Hopefuly this will whip its ###
Thanks Marcello
Rick
Whats up Paul.
Something funny ?
How about this-
They made me a moderator of the DIY forum at
http://www.headfi.org
Damn scary
Kinda like the rats guarding the cheese
Something funny ?
How about this-
They made me a moderator of the DIY forum at
http://www.headfi.org
Damn scary
Kinda like the rats guarding the cheese
Very interested in your work, always thought headphone amp for connection to Naims would be desirable. Yours is to be that amp. Please send .pdf and and schematics to:
pauldewdney@hotmail.com
Thanks
pauldewdney@hotmail.com
Thanks
could you?
Hi,
could please email me a version of the schema?
to: edwind@xs4all.nl
thanks!
How does it run on a 300ohm Sennheiser 580???
Edwin
Hi,
could please email me a version of the schema?
to: edwind@xs4all.nl
thanks!
How does it run on a 300ohm Sennheiser 580???
Edwin
Files sent...
This amp was specifically designed for Grado headphones.
I've simulated - not measured, sorry - an high-impedance load:
with 300 Ohms, the gain should be about 13-15dB,
the maximum output swing should be over +/-8Vpk (or 16Vpk-pk) but with 5% THD, +/-9Vpk-pk before the soft
(very soft....) clipping.
We have, at +/-3Vpk level, less than 0.7% THD.
The THD is low-order type, with the 2nd harmonic higher than the third: the other cokmponents were absent.
All this with 24Vdc B+ rail.
However I've tried with an old Sennheiser model and with an AKG 141 Monitor, with satisfying listening results, in my opinion.
Cheers
Marcello
This amp was specifically designed for Grado headphones.
I've simulated - not measured, sorry - an high-impedance load:
with 300 Ohms, the gain should be about 13-15dB,
the maximum output swing should be over +/-8Vpk (or 16Vpk-pk) but with 5% THD, +/-9Vpk-pk before the soft
(very soft....) clipping.
We have, at +/-3Vpk level, less than 0.7% THD.
The THD is low-order type, with the 2nd harmonic higher than the third: the other cokmponents were absent.
All this with 24Vdc B+ rail.
However I've tried with an old Sennheiser model and with an AKG 141 Monitor, with satisfying listening results, in my opinion.
Cheers
Marcello
