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Old 10th April 2009, 03:50 AM   #31
casouza is offline casouza  Brazil
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Default Single-ended to Balanced output

Two commons solutions are a pair of Jensen or Cinemag line output transformers with 600 ohms split secondaries. The primary impedance should be properly matched to the HDAM output impedance.
Jensen and Cinemag will respond to technical queries if you tell them teh HDAM output impedance, maximum output voltage and load seen by the secondary. Expect to pay about U$ 160 for the pair of transformers.

A less expensive option is to make your own balanced line drivers using a couple of Burr Browns DRV135 chips. These are specified to drive cleanly long cables and tough 600 ohm studio loads. The schematic is in the datasheet.
Good luck
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Old 10th April 2009, 12:24 PM   #32
NeoY2k is offline NeoY2k  France
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Also have a look at THAT Corp line drivers and line receivers line receiver That1200 (searching this reference will directly lead you to the right website).
Can be bought from Mouser or from Profusion PLC.
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Old 10th April 2009, 07:10 PM   #33
Dyolf is offline Dyolf  Norway
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Hello
I am new to this forum, and my diy skills are mostly in the carpentry and metalworks area. (electronics is a french town in Russia)
I have resently had a major interest in buying a NOS DAC kit. It seems that for the TDA1543 chip, 8x or less, there is the benefit that you dont need an output stage, the chips alone is enough to feed the preamp. Also, a lot of the kits seem to have implemented a USB input.
Question: Is there out there, an assembled kit, TDA1541 based with USB and S/PDIF input, and the nessesary outputstage, with a pricetag that can match a 8x1543 kit?
Steen
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Old 11th April 2009, 09:56 AM   #34
NeoY2k is offline NeoY2k  France
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You may as well use a Behringer or the like (cheap presonus) usb small soundcard to output SPDIF, then you would be able to use any SPDIF DAC you'd like at any freq... Given jitter reduction is sufficient, but in case of computer , I think you really need good jitter attenuation.
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Old 11th April 2009, 03:20 PM   #35
FOXYE is online now FOXYE  Israel
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nice dac
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Old 12th April 2009, 05:14 PM   #36
jstang is offline jstang  United States
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How hard would it be to add TOSLINK to this DAC?

jstang
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Old 12th April 2009, 05:14 PM   #37
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Here's my version...

Click the image to open in full size.

Still running this guy.
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Old 12th April 2009, 06:40 PM   #38
FOXYE is online now FOXYE  Israel
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What the impressions?
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Old 12th April 2009, 07:29 PM   #39
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Quote:
Originally posted by jstang
How hard would it be to add TOSLINK to this DAC?

jstang

Twisted Pear Audio has both a Toslink module that will just need some power to put out SPDIF and a SPDIF Mux module that will let you have 4 separate SPDIF inputs. I would go with the MUX module.
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Old 13th April 2009, 01:18 AM   #40
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Quote:
Originally posted by FOXYE
What the impressions?
Initially impression is the rich mid range.

I have yet to do any serious listening to it. Still running in this DAC. I will comment on it in more details later.
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