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Old 23rd June 2013, 04:00 PM   #1021
zfuszek is offline zfuszek  Austria
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I have sent payment for 1 set.

Thanks,

ZF
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Old 23rd June 2013, 04:17 PM   #1022
diero is offline diero  Germany
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Paypal sent, 2 set,thanks!
( but paypal needs,to check the safety )

Last edited by diero; 23rd June 2013 at 04:30 PM.
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Old 25th June 2013, 05:34 AM   #1023
veteran is offline veteran  Poland
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All paid PCBs were sent yesterday (registered air mail) - let me know when they arrive!
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Simple audio solutions
blog.unisonus.com
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Old 25th June 2013, 06:39 AM   #1024
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@Veteran,

that sounds really good!
Please, is there a "last" BOM that can you link to to first page?
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Old 26th June 2013, 07:22 PM   #1025
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@Veteran,

They are arrived, thanks for fast shipping!
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Old 27th June 2013, 02:38 AM   #1026
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The clone vs the original. Some questions.

Adjustable gain:
So in the original pass labs production aleph p1.7 there were two knobsand pots for left and right gain. Where these just 10k attenuators on the input, or where they variable resitance ithe circuit itself to adjust the gain level? How is that adjustable gain control accompished with the veteran boards?

Volume control:
Im considering heavily the twisted pear stepped attenuator. I like that it has a classic feel 300degree pot and i dont want to get to fancy with a display. A nice big knob on a pot sounds good to me. How is the twisted pear joshua tree attenuator? Is the stock setup/bom adequate for the aleph p1.7? Is it well suited to this project and how well and how quietly does it perform? I anticipate the clicking from the relays, but is there any noise in the circuit from the clicking? How responsive is the attenuator? Would a 5k quad alma pot be a better choice?


Input selector:
What would be needed for a simple effective relay based input selector? Can a rotary knob be wored to a 12 v dc power supply and sent to a series of dpdt relays to switch on left and right inputs to select source? Would a relay close immediatly upon removal of voltage? Would there be a slight delay when applying voltage? I imagine i would need the relays to close before the next set open (break before make) or would i need the input selectioto be make before break if i want quiet switching of sources


Thanks
Your newbie friend, andrew
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Old 27th June 2013, 03:30 AM   #1027
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Location: British Columbia
Aleph p power supply umbilical.

So im thinking i will separate the transformers for the aleph channels and the power for the relay based source switching, and put these three distinct power supplies into a seperate enclosure so that i can stack my preamp on/near my pearl2 phono stage without worry of hum/noise pickup. As you can imagine there are some logistical challenges in doing so, amd some choices to make. Can you help me make the best choices? This is taking some effort.. I want it to be elegant and have a high-end professional appearance.

One connector or three?
Speakon 8c, xlr 7pin, or three powercon?
One 8core wiire, or three shielded pairs in one nylon jacket?

Transformed Ac through the umbilical or rectified dc?

Forget separate boxes and get mu shielding and separate the transformers in the box.?

Id love your thoughts. This aleph p certainly is a new challenge for me. Im a pharmacist not an engineer, so id love your help guys! Safe effective and elegant is my goal!

Thoughts!?
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Old 27th June 2013, 08:09 AM   #1028
diero is offline diero  Germany
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pcb arrived quickly,they look good
thanks
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Old 29th June 2013, 09:29 PM   #1029
Mr. dB is offline Mr. dB  United States
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Boards have arrived, for which many thanks!
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Old 30th June 2013, 12:28 PM   #1030
potepuh is offline potepuh  Slovenia
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Boards arrived

thanks
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