How does the sound compare ..direct input to the UcD modules and via the tubed input stage .
dc or ac heater voltage ?
Regulated tube supply ?
How is the hum level ? Non-existent or very low ?
Very neat and nice looking. Great job.
I don't think I'll ever get my surroundings to look so neat and clutter free ! Or is that out of view behind the camera ?
Dynaudio 52's ?
dc or ac heater voltage ?
Regulated tube supply ?
How is the hum level ? Non-existent or very low ?
Very neat and nice looking. Great job.
I don't think I'll ever get my surroundings to look so neat and clutter free ! Or is that out of view behind the camera ?
Dynaudio 52's ?
Thanks for the nice reply's.
After listening to hypex modules for several years i got bored of the sound. Bypassing the hypex inputbuffer ( opamp ) and adding a tube buffer makes the sound more live like, less boring a kind of sparking was added by the tubebuffer. I tried several tube setup's ( principals, brands and type's) but the 6n6p in SRPP i like the best. Just one capacitor in the analogepath
DC heater supply right from the SMPS. Anode tube supply right from the SMPS ( 60 Volt ).
No humm perceptible on my dynaudio's.
Yes, the speakers are Dynaudio Audience 52 modded with soundpulp ( aramid wool ).
They are kept out of the Class-D loop. This to keep it simple and i do not like feedback in analoge audiopath.kenpeter said:
Are the tubes aware of the output, or kept out of the
Class-D loop?
ashok said:How does the sound compare ..direct input to the UcD modules and via the tubed input stage .
After listening to hypex modules for several years i got bored of the sound. Bypassing the hypex inputbuffer ( opamp ) and adding a tube buffer makes the sound more live like, less boring a kind of sparking was added by the tubebuffer. I tried several tube setup's ( principals, brands and type's) but the 6n6p in SRPP i like the best. Just one capacitor in the analogepath
dc or ac heater voltage ?
Regulated tube supply ?
DC heater supply right from the SMPS. Anode tube supply right from the SMPS ( 60 Volt ).
How is the hum level ? Non-existent or very low ?
No humm perceptible on my dynaudio's.
I don't think I'll ever get my surroundings to look so neat and clutter free ! Or is that out of view behind the camera ?
Dynaudio 52's ?
Yes, the speakers are Dynaudio Audience 52 modded with soundpulp ( aramid wool ).
The input impedance is 1k8(1800) Ohm.revintage said:What is the input impedance of the Hypex without input buffer opamp?
Lars, the buffer amplifies 4,5 times so for max. power you need 9 Volt in. See specs below:
http://www.hypex.nl/docs/UcD400OEM_datasheet.pdf
http://www.hypex.nl/docs/UcD400OEM_datasheet.pdf
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