Hi All
Time for another probably embarassing question.
I want to run the digital output off my CD player (RCA socket - s/pdif i think...?) into the digital input of my DCX 2496 . (XLR)
Is there any schematic wiring diagram that shows how to wire up an RCA connector to an XLR in this DIGITAL application??? as opposed to analog??
I get the impression it should be pretty easy and may not even require transformers etc.
Many thanks in advance
Cheers
Time for another probably embarassing question.
I want to run the digital output off my CD player (RCA socket - s/pdif i think...?) into the digital input of my DCX 2496 . (XLR)
Is there any schematic wiring diagram that shows how to wire up an RCA connector to an XLR in this DIGITAL application??? as opposed to analog??
I get the impression it should be pretty easy and may not even require transformers etc.
Many thanks in advance
Cheers
Well, there is 'works' and then there is 'works properly'. I hate to admit it, but right now I'm using a plain-vanilla rca-to-xlr cable, and it 'works' in the sense that it passes the signal.
The 'right' way to do it is to get
a) rca->bnc 75Ohm cable
b) 75-110 xformer
Markertek sells all this stuff, and there are doubtless other sources. This was my plan, right up until I got the wrong gender on the xformer. D'oh!
The 'right' way to do it is to get
a) rca->bnc 75Ohm cable
b) 75-110 xformer
Markertek sells all this stuff, and there are doubtless other sources. This was my plan, right up until I got the wrong gender on the xformer. D'oh!
If you are brave, and up for an experiment, I would suggest ditching the XLR, as it "looks" terrible to a SPDIF signal. In which case, you would still use a decent transformer, or even a mediocre one, and just adjust the impedance to be 75 ohms. Pulse transformers that change impedance usually don't work very well.
There may be some threads in the digital forum the last month or so with some circuits that will work. If not, maybe I can scribble one down.
Jocko
There may be some threads in the digital forum the last month or so with some circuits that will work. If not, maybe I can scribble one down.
Jocko
Someone on audiocircle pointed me towards another Behringer product that may do exactly what you want. They have a product called the ultramatch SRC2000 (and a newer version called the SRC2496) which will, among other things, convert from RCA or optical SPDIF to XLR AES/EBU.
http://www.behringer.com/SRC2000/index.cfm
http://www.behringer.com/SRC2496/index.cfm
I've ordered the SRC2496, but haven't received it yet. it looks like a pretty cool device -- sample rate conversion and jitter removal and it also works as a DAC and ADC, all for $129.
The SRC2000 is cheaper ($60-$70), but doesn't work as a DAC or ADC and only resamples to 32 or 44.1kHz.
-Rob
http://www.behringer.com/SRC2000/index.cfm
http://www.behringer.com/SRC2496/index.cfm
I've ordered the SRC2496, but haven't received it yet. it looks like a pretty cool device -- sample rate conversion and jitter removal and it also works as a DAC and ADC, all for $129.
The SRC2000 is cheaper ($60-$70), but doesn't work as a DAC or ADC and only resamples to 32 or 44.1kHz.
-Rob
Thanks for all the replies and wisdom.
The dcx spec say it will take spdif.. i ws hoping it could do so without major additional expense .
I beleive some may have just plugged it in - and it worked , my question was how did they wire up the plugs.
Mind you the SRC2496 looks interesting (but $ here)
Cheers
The dcx spec say it will take spdif.. i ws hoping it could do so without major additional expense .
I beleive some may have just plugged it in - and it worked , my question was how did they wire up the plugs.
Mind you the SRC2496 looks interesting (but $ here)
Cheers
To give some ideas and pictures how to implement what is already suggested here.
Ergo's DCX2496 mods
Regards,
Ergo
Ergo's DCX2496 mods
Regards,
Ergo
Check Lundahl LL1574, http://www.kandkaudio.com/transformers.html
or Guido's DAC input cct (attached)
Extreme_Boky
or Guido's DAC input cct (attached)
Extreme_Boky
This is an elegant solution to what you need - Neutrik AES/EBU Digital audio transformer.
Here is the link:
http://dv411.com/neutaestran.html
Price goes from $ 30 to $50.
It does good job and it is very small. You could order it in various connector combinations, and you will need BNC to RCA adapter.
I have to say it is funny that this single transformer - adapter goes up to $ 50 and you could get Behringer SRC 2496 unit for $ 130. Behringer could serve you as a digital preamp, bit rate converter, digital distribution box...
Here is the link:
http://dv411.com/neutaestran.html
Price goes from $ 30 to $50.
It does good job and it is very small. You could order it in various connector combinations, and you will need BNC to RCA adapter.
I have to say it is funny that this single transformer - adapter goes up to $ 50 and you could get Behringer SRC 2496 unit for $ 130. Behringer could serve you as a digital preamp, bit rate converter, digital distribution box...
Attachments
Ergo:
Try the resistor on the primary side. There is an alternate source for those transformers now..........Digi-key sells them.
E-B:
No! In any case, I would use coax, instead of 110 ohm for the cable. The less XLR anything in the path the better.
Since the unit uses a Crystal RX, any of the many circuits floating around could be used. No reason to try to stick to high AES/EBU output level. So, treat it as a typical SPDIF stage.
The trick is to find a good one.
Jocko
Try the resistor on the primary side. There is an alternate source for those transformers now..........Digi-key sells them.
E-B:
No! In any case, I would use coax, instead of 110 ohm for the cable. The less XLR anything in the path the better.
Since the unit uses a Crystal RX, any of the many circuits floating around could be used. No reason to try to stick to high AES/EBU output level. So, treat it as a typical SPDIF stage.
The trick is to find a good one.
Jocko
Thats why I cancelled my reply - it was described in the old ultracurve 8024 manual which I had owned for years and also in the src 2496 manual. Too many manuals in my case.
But a simple xlr to rca diy cable is sufficient in my exerience with both units. Connect pin 1&3 of the xlr to sleeve of the rca, and pin 2 of the xlr to the tip of the rca.
But a simple xlr to rca diy cable is sufficient in my exerience with both units. Connect pin 1&3 of the xlr to sleeve of the rca, and pin 2 of the xlr to the tip of the rca.
Yeah. I bought a Neutrix XLR>RCA converter jack (like a regular XLR but with a female RCA at the end where normally the cable goes in). I have no idea of the internal connections, but I plugged it into the DCX, RCA from CD player into the other end and it plays without a hitch. Even sounds good
Jan Didden
Jan Didden
what one has to keep in mind - if you build your own converter cable, use a 75 ohm coax. I have tried a regular audio cable (canara l4e6s) which worked fine with my micromega cd player to the deq (i assume it also would have worked for the dcx) but did not transmit any signal from my philips 963. With a 75 ohm coax cable (RG 59) no problems at all.
So with the DCX is there any discernable improvement between a non-transformered spdfi input and one that has one and converts to aes????
Also I cannot find any mention of AEs or spdif input in the manual other than in the specifications!!- (selective blindness - I can't see dirty dishes in the kitchen sink either!)
Cheers
Also I cannot find any mention of AEs or spdif input in the manual other than in the specifications!!- (selective blindness - I can't see dirty dishes in the kitchen sink either!)
Cheers
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