You can buy din-sme plug on ebay
Error page | eBay
take Mogami 2549 cable (2x120cm ?)
Mogami Neglex 2549 Balanced Microphone Cable Bulk Unterminated 10' Blue - 10 Ft | eBay
add two neutrik plugs
2 NEUTRIK GOLD PHONO RCA PLUGS NYS373 Red/White Professional Connectors REAN | eBay
or more expensive
Neutrik Profi NF2CB2 RCA phono connector Pair Unique Contact Design pack of 2 7613187001109 | eBay
and build your own cable in
Linn is using Mogami Neglex 2549 for their T-cable and they are selling it for a lot of money
Linn T-Kable
https://www.pinkfishmedia.net/forum/threads/mogami-cable-for-linn-lp12.154625/
or buy Jelco
https://www.ebay.de/itm/Jelco-JAC-5...107406?hash=item5b5345cd4e:g:45IAAOSwTwtcZZhi
🙂
Hi Richard,
In early January, I was the guy who bought a pair of Emerald boards and asked you if my Sugden phono preamp power supply (with convenient umbilical cord) would work--we agreed it should.
So I'm finally going to build this thing, primarily for MM with a Cinemag SUT. I use a plain vanilla DL-103. What settings would you think would be a good start: 47k input load, 37 dB gain, possibly? I currently use a SofTone Model 4 from Yokohama and 47k and the 5 mV MM switch works fine on that. A friend uses your VSPS, which he likes very much, and is very curious about how the Emerald will sound when I'm finished.
Thanks for supplying us with good value kits!
In early January, I was the guy who bought a pair of Emerald boards and asked you if my Sugden phono preamp power supply (with convenient umbilical cord) would work--we agreed it should.
So I'm finally going to build this thing, primarily for MM with a Cinemag SUT. I use a plain vanilla DL-103. What settings would you think would be a good start: 47k input load, 37 dB gain, possibly? I currently use a SofTone Model 4 from Yokohama and 47k and the 5 mV MM switch works fine on that. A friend uses your VSPS, which he likes very much, and is very curious about how the Emerald will sound when I'm finished.
Thanks for supplying us with good value kits!
Either the BOM defaults 39/59 dB(68 ohms, 1 k ohm) or the "A" version 37/57 dB (82 ohms / 1.5k) should be fine. It's unlikely you'd be able to discern the 2 dB difference.
If you think it matters, use the A version.
Please see the BOM for details.
If you think it matters, use the A version.
Please see the BOM for details.
Hi! I happen to have two opa637 and two opa627 laying around and thinking of building the Emerald. Are the opa637 ok to use? The opa637 suppose to work best when used in high gain I heard.
Interesting emerald phonostage video to Share. I'm quite shocked it sound so good besides being sneakily accurate . { compared with some other} for such little effort.
It took quite long to burn in completely buddy told me is small signal issue. So I made a attenuation to use a radio to help burn in.
YouTube
No vacuum tubes by the way.
Emerald is truly a must do project.. Fantastic price performance. It's so silly simple but I came to trust this little box to simply do whatever required. Live recording. Acoustics. Disco. Classical.. Oldies..jazz. Everything is doable and enjoyable. I do feel Alot of my friends got put off cause it's too simple and not exotic.
Thanks Richard.. especially the stay at home issue now. I played with it alotttt.. Much appreciate your sharing this project..
It took quite long to burn in completely buddy told me is small signal issue. So I made a attenuation to use a radio to help burn in.
YouTube
No vacuum tubes by the way.
Emerald is truly a must do project.. Fantastic price performance. It's so silly simple but I came to trust this little box to simply do whatever required. Live recording. Acoustics. Disco. Classical.. Oldies..jazz. Everything is doable and enjoyable. I do feel Alot of my friends got put off cause it's too simple and not exotic.
Thanks Richard.. especially the stay at home issue now. I played with it alotttt.. Much appreciate your sharing this project..
You're welcome. Using an attenuation network and a radio is a tried-and-true burn in method. Some people even go to the length of making an inverse RIAA to fully convert the line level signal into a simulated cartridge output.
@kjb Historically OPA637 have not worked especially well in my boards, neither do OPA37s by the way. I can't honestly recall if anyone has tried OPA627s, but op amps are socketed ... and a full set of OPA27s is less than a single OPA627 so not a huge problem if things go pear shaped.
@kjb Historically OPA637 have not worked especially well in my boards, neither do OPA37s by the way. I can't honestly recall if anyone has tried OPA627s, but op amps are socketed ... and a full set of OPA27s is less than a single OPA627 so not a huge problem if things go pear shaped.
I realized how a good riaa phonostage is very important
I was given a tube riaa phonostage.. . Supposedly is excellent ? But my ears could not tune my turntable cartridge by ear!
Irregardless how "good" it sound... Alot of misinformation.. And thus fatigue.
So quite pleased to strick with the bom as strict as I can .a feat because I'm adhd. Only thing I did is try with a better hookup cable and transformer..
I was given a tube riaa phonostage.. . Supposedly is excellent ? But my ears could not tune my turntable cartridge by ear!
Irregardless how "good" it sound... Alot of misinformation.. And thus fatigue.
So quite pleased to strick with the bom as strict as I can .a feat because I'm adhd. Only thing I did is try with a better hookup cable and transformer..
@rjm thanks, I get the opa27 just in case opa627 wont work.
And please explain the use of a carbon resistor on the output. I thought metal film is preffered for lower noise.
And please explain the use of a carbon resistor on the output. I thought metal film is preffered for lower noise.
I prefer to use a carbon composition here for the lower inductance. The output resistor has no significant contribution to the circuit output noise.
Success! Mine is working, fed by a +/- 17.5 Sugden power supply. No gotchas, so I have to hand it to Richard for designing an easy-to-build circuit board. Sound is good, roughly equivalent to my SofTone 4. I'm using a Denon DL-103 into a pair of Cinemag CM-1254 SUTs, so I'm at the default 40 dB gain and 47.5k ohm input load. I'll experiment with using the Emerald as a MC phonostage and perhaps try out boutique capacitors at C3.
BTW, what does R22 (1k trim) do? I've made a few turns back and forth while listening to music and I couldn't hear any differences. Is it setting the bias for Q7 and Q8?
Major improvement: swapped out KEMET 2.2 µF film cap at C3 for Auryn 1.5 µF "True Copper" cap. Big and beautiful sound!
I'm done.
I'm done.
In front of R22 there are three test points. V- ref and V+ Adjust R22 so the voltage across V- and ref is the same as ref and V+. I do this initially without the ICs installed.
Ah, thanks, Simon! I'm disinclined to disturb what I've buttoned up, but next time I have it apart, I'll give that a try.