DAC 2496 (AK4393) DAC KIT With CS8416+AK4393+5532 - Page 73

Nosian · 3rd October 2011, 07:54 PM

hi every one,
does anybody know the value or values of L1 and L2?
it's not on the scheme!
thanks & regards

jef9200 · 12th October 2011, 03:49 PM

Hi,
Just bought a pair of TAM transformer. Is it possible to configure the kit with balanced output ?

Thanks.

sharpi31 · 12th October 2011, 04:18 PM

This should be easy - which model Tamura transformers did you buy?

Tenson · 12th October 2011, 04:30 PM

Would anybody be interested in a super balanced PCB that would work with this DAC? You could put NE5532 compatible op-amps in (5532 is a good choice IMO) such as LM4562. The improvement is significant over a single op-amp output such as that built into the kit.

I have a plan to produce this PCB for another DAC so it would be easy to do it for this at the same time.

See the simple difference between a single NE5532 (Green) and the superbal config using the same op-amps (Red).

(3rd Harmonic is not higher in Red, just equal)

jef9200 · 12th October 2011, 06:19 PM

I bought "1 Pair TAM (TAMRADIO) TD-1 600:600 AUDIO TRANSFORMER "| , the link was given from Sharpi on post 670.

F1 FAN · 13th October 2011, 02:11 AM

Quote:

Originally Posted by jef9200

Hi,
Just bought a pair of TAM transformer. Is it possible to configure the kit with balanced output ?

Thanks.

Yes since the AK4393/96 have differential outputs.

Quote:

Originally Posted by Tenson

Would anybody be interested in a super balanced PCB that would work with this DAC?

Which would only be of benifit if you were driving the inputs of a balanced preamp.

Tenson · 13th October 2011, 11:39 AM

Quote:

Originally Posted by F1 FAN

Which would only be of benifit if you were driving the inputs of a balanced preamp.

Hi,

Not at all, it would give single ended outputs (only).

Super-balanced referrers to the input of the circuit which significantly reduces common mode distortion over using the + and - inputs of a normal op-amp arrangement.

jef9200 · 13th October 2011, 02:50 PM

My preamp (UGS) has inputs rca and xlr and is based on a symetric design(Nelson Pass), i think it's better to use the XLRs. Could someone help me with the wiring from dac to transfo and transfo to xlrs. Transfos are TAMradio TD-1 (600R primary and 600R sec with a centertap on each side). transfo shematic shows a ground between prim and sec ?
Thanks.

Tenson · 13th October 2011, 03:16 PM

Literally connect the DAC outputs directly to one side of the transformer, and the XLR output sockets to the other. DC from the DAC will be removed by the transformer. No ground is needed unless you want to make it single ended.

jef9200 · 13th October 2011, 06:10 PM

Thanks, but i thought i need 3 wires for xlrs balanced ? +, - and ground ? I'm relatively newbie , i prefer to ask before burning something.

3rd October 2011, 07:54 PM	#721
Nosian diyAudio Member Join Date: Jun 2011	L1 & L2 hi every one, does anybody know the value or values of L1 and L2? it's not on the scheme! thanks & regards

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12th October 2011, 03:49 PM	#722
jef9200 diyAudio Member Join Date: Feb 2006 Location: Belgium	Hi, Just bought a pair of TAM transformer. Is it possible to configure the kit with balanced output ? Thanks.

12th October 2011, 04:18 PM	#723
sharpi31 diyAudio Member Join Date: Oct 2005	This should be easy - which model Tamura transformers did you buy?

12th October 2011, 04:30 PM	#724
Tenson diyAudio Member Join Date: Feb 2006 Location: Kent	Would anybody be interested in a super balanced PCB that would work with this DAC? You could put NE5532 compatible op-amps in (5532 is a good choice IMO) such as LM4562. The improvement is significant over a single op-amp output such as that built into the kit. I have a plan to produce this PCB for another DAC so it would be easy to do it for this at the same time. See the simple difference between a single NE5532 (Green) and the superbal config using the same op-amps (Red). (3rd Harmonic is not higher in Red, just equal)

12th October 2011, 06:19 PM	#725
jef9200 diyAudio Member Join Date: Feb 2006 Location: Belgium	I bought "1 Pair TAM (TAMRADIO) TD-1 600:600 AUDIO TRANSFORMER "\| , the link was given from Sharpi on post 670.

13th October 2011, 02:50 PM	#728
jef9200 diyAudio Member Join Date: Feb 2006 Location: Belgium	My preamp (UGS) has inputs rca and xlr and is based on a symetric design(Nelson Pass), i think it's better to use the XLRs. Could someone help me with the wiring from dac to transfo and transfo to xlrs. Transfos are TAMradio TD-1 (600R primary and 600R sec with a centertap on each side). transfo shematic shows a ground between prim and sec ? Thanks.

13th October 2011, 03:16 PM	#729
Tenson diyAudio Member Join Date: Feb 2006 Location: Kent	Literally connect the DAC outputs directly to one side of the transformer, and the XLR output sockets to the other. DC from the DAC will be removed by the transformer. No ground is needed unless you want to make it single ended.

13th October 2011, 06:10 PM	#730
jef9200 diyAudio Member Join Date: Feb 2006 Location: Belgium	Thanks, but i thought i need 3 wires for xlrs balanced ? +, - and ground ? I'm relatively newbie , i prefer to ask before burning something.