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The Phono Stage

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#181
I sent this to Peter but thought it was worthwhile to post here:

Even with the part substitutions that I made, it spanks the EAR 834p Deluxe my buddy let me borrow which is honestly no slouch. Makes me wonder how much better it would get with the V-Caps...

So you guys know, I'm using Vitamin Q caps, a combination of Riken, Shinkoh, and TX2575 resistors, Silmic II electrolytics, and batteries with a Denon 103R in a wood body. It sounds great!
 
#182
Hey Chris,
Just wondering - if you are using the denon 103R, how are you finding the gain of the phono stage? The internal impedance of the 103R is 14 Ohms which is still fairly high, from what I can figure out - I am using the 17d3 which is 38 Ohms, and I am not getting very much gain...usable volumes are at around 9pm on the dial (of course, I am using the Pass B1 as well, so I guess I am asking for it).
I am considering the Zyx Fuji which has an impedance of only 4 Ohms and so I am hoping that will solve my low gain problems.
Thanks for your input.
byron
 
#183
The gain is fine as it can play louder than I can listen and it doesn't lack dynamics like when you plug an MC into an MM input. I am also using a B1 and turn it most of the way up. I also use high efficiency speakers and a very low powered amplifier though. I haven't heard the ZYX Fuji, but at $2500 retail you may also consider the Shelter 501, Shelter 5000, a modded Denon 103 (wood body, Zu, etc...), or the wonderful Koetsu Black. Personally I think they are all great carts.

Best,
 
#189
kstagger said:
two questions -

1) I'm having a hard time even finding 1N5314s - Mouser is out of stock and Newark is charging $12ea. Any other alternatives out there?

2) Can I use a less expensive alternative for the power supply op-amps? Like the AD744? (which I already have a few of).

thanks - and I must add that the PCB quality is _very_ nice.
Click to expand...

Peter's answers will definitely be more informed than mine...but you can run it on batteries just fine and those are cheaper than populating the PS. I have tried 9V and 18V and while 9V is nice and betters lots of stuff, 18V (from a pair of alkaline 9v) is outstanding and hangs with the best of the best. Forget champagne on a beer budget. The is like buying the absolute sound at Ikea.

Best,

Chris
 
#192
Finally finished my phono stage. Running a Benz Micro-Glider S with 0.8 mV output into it. I have to admit I did not think it would sound better than my PH-5, but it does. More transparent mids and much more control of the bass. Very nice project.
 
#194
Hi

How to get box surface like this

Thanks
 

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#200
after much head scratching, I finally reflowed every solder joint on the 'strange channel'. Also found an op-amp connection that looked a little dodgy and added some more solder. Once I finished that - everything works.

Obviously my Dynavector 10X5 is not an ideal cart - but it's making music! Very fast and detailed phono stage. Now I just need a better cartridge... to be continued. 😎
 
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