I have a Dynavector 10x5 and Denon DL-103. I started by testing the Dyna and it had a bit too much gain right away. I have a stepped attenuator on a BA3FE and it was a decent volume at the lowest setting.
The 103 I had to crank to halfway for a decent volume but it introduced more noise at that level.
It’s silent on both carts at low volume but gets noisy for both halfway up.
Sounds great so far though.
The 103 I had to crank to halfway for a decent volume but it introduced more noise at that level.
It’s silent on both carts at low volume but gets noisy for both halfway up.
Sounds great so far though.
I’m experimenting with different resistors but finding I enjoy the 47k already loaded.
I do find that I am experimenting a bit too much noise at halfway on both cartridges. It’s not hum, but more of a fluttering/ground loop noise.
I’m running a Dynavector 10x5 —> Pearl 2 -> BA3FE -> F4 -> Cornwall III.
I figure it’s just a lot of gain.. I do have 1K resistors on the Ba3FE and the Dyna is a HOMC so puts out more.. sounds amazing but lowering the noise would be nice. Although, the Cornwall IIIs are very efficient at 101 db.
I do find that I am experimenting a bit too much noise at halfway on both cartridges. It’s not hum, but more of a fluttering/ground loop noise.
I’m running a Dynavector 10x5 —> Pearl 2 -> BA3FE -> F4 -> Cornwall III.
I figure it’s just a lot of gain.. I do have 1K resistors on the Ba3FE and the Dyna is a HOMC so puts out more.. sounds amazing but lowering the noise would be nice. Although, the Cornwall IIIs are very efficient at 101 db.
If you look at the Aleph J BOM at the DIY store, in that application the ZTXs are replaced by BC equivalents.
Dneu2011:
What are those turrets you installed for the loading resistors and caps to let you play with the values? Do they make good connection with the component leads such that you can leave them on the board? Or is the idea to take them out when you're happy with the loading and solder your final choices in? Thx.
What are those turrets you installed for the loading resistors and caps to let you play with the values? Do they make good connection with the component leads such that you can leave them on the board? Or is the idea to take them out when you're happy with the loading and solder your final choices in? Thx.
Local feedback normally takes care of differences in the gain of different devices. If it didn't each channel would need perfectly matched components.
New mouser parts came in today for me to change out the wide heatsinks I had so they were not touching the large filter caps. I changed them out and while under the hood I changed the twisted rca wires I had to some shielded rca wires and the phono is now dead silent! Before I changed the wires, I was also having noise issues when switching out the loading resistors. I now don't get the noise and the posts I have make a good connection with the resistors when swapping them out.. Next is to create a switch for changing the loading resistor... but for now I will enjoy the phono as is...
This is truly a solid performer and it will be replacing my tubes4hifi PH-16 tube phono....
Thanks again for everyone's help on this build.
This is truly a solid performer and it will be replacing my tubes4hifi PH-16 tube phono....
Thanks again for everyone's help on this build.
Attachments
I've almost finished building an external power supply which I'm planning to use to power an M2X (or F5) power amp, Korg B1 pre and Pearl II phono stage (I think I've got most parts gathered in boxes lying around somewhere). My question is; Is there any advantage/disadvantage to adding additional capacitance to the supply lines locally inside the enclosures for the Pearl II and Korg B1? Each will be housed in separate enclosures.
This is the progress I've made so far...
This is the progress I've made so far...
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I tried to attach a photo, but struggling to figure out how. The forum guide says to set up a privatte gallery then upload photos there. But I can't figure out how. Is there an easy way to do this?
Many thanks,
Gary
Many thanks,
Gary
Go advanced.
Manage attachments.
Choose file for each picture.
After you have all your pics chosen, click upload.
Then you can send your message.
Manage attachments.
Choose file for each picture.
After you have all your pics chosen, click upload.
Then you can send your message.
Gary if you're trying to add a photo to a thread, while on the Reply to Thread page, click the down arrow to the right of the paper clip icon.
Then click "Browse" to upload an image from your computer and select a picture.
Next click "Upload" in the bottom right hand corner, then "Submit Reply" at the bottom of the Reply to Thread page. Do NOT click "Preview Post" or you'll have to start over.
Hope that helps!
Geez. I'm a slow typist!
Then click "Browse" to upload an image from your computer and select a picture.
Next click "Upload" in the bottom right hand corner, then "Submit Reply" at the bottom of the Reply to Thread page. Do NOT click "Preview Post" or you'll have to start over.
Hope that helps!
Geez. I'm a slow typist!
Agreed. Yes thanks.
The turrets make a good connection, but once I get my desired cartridge load I’m going to solder the resistor to the turret. If I decide to swap in the future I can just de-solder from the turret and not have to remove the boards.
