|
Post by svart on Oct 30, 2015 9:24:17 GMT -6
Are you using the reset button after you change the BD or SR? In the clip he posted, he hits the reset button and you can hear it reset, but the noise comes back.
|
|
|
Post by dexter on Oct 31, 2015 12:51:47 GMT -6
I can tell you without a doubt that is not normal at all. From what I've seen of the RM ADC, it should be a lot flatter, without the bump. My PCM4222 based ADC is +/-0.1dB from 15hz-35KHz+, so I know the IC is not the cause. Also, the decimation pin could be causing some of the hiss. Really, anything that changes the decimation or sample/bit rates of the A/D IC but does not change the expected input rates of the SPDIF transmitter will result in hiss, usually in the right channel more than the left. Also, the digital noise, and you simply being able to touch wires to stop the noise points to a grounding issue. Tell you what, you pay shipping and I'll fix it for you. That's very generous of you. I'd greatly appreciate your help. PM'd
|
|
|
Post by mitchkricun on Nov 1, 2015 12:38:18 GMT -6
Anyone else have noise issues with the PCM4222? A couple years ago I bought a used Ross Martin ADC on ebay but unfortunately it had some noise issues (turns out it was modded and I got scammed - previous owner put in different opamps and caps). I sent it to Ross, paid $80, he replaced the opamps and the 2 (mylar?) caps next to each opamp, but when I finally got it back it made a different noise. I didn't bother sending it back again because it took forever, he was very unresponsive after taking my money, and initially sent my ADC to someone else and Ross sent me his DAC. Complete debacle. The left channel is somewhat usable, but the right channel is not. Been using it on and off but now I'm determined to just get the damn thing fixed so I can use it properly or sell it in good conscience. If I lift out the mess of wiring from behind the meters and hang it over the edge of the case, then I can get the noise reduced almost completely. I am thinking that there is some kind of interference going on with the wiring and the proximity to some components on the board, however I am not an EE - I only know enough to get into trouble. Here is a clip of the noise if anyone is interested (I'm hitting the reset button in the clip): PCM4222 noiseI've considered replacing all the cheapo caps and rewiring the unit, but not sure it would make a difference. Does anyone have any ideas as to what the cause and/or solution might be? Any help or suggestions is very much appreciated. If you're getting the noise to disappear when you move the wires? I'd document the connections well, pull twist/ reroute, replace with shielded cable, i fully expect to have to rework my multi channel units if and when they get here.... So, this is what it's come to? Doesn't he test the units before they go out? Very depressing. If he sends Jim Williams a unit that hums out of the box, what chance do the rest of us have? It appears the back log that exists with RMA has a lot to do with repairs and redesigns, that could have been avoided with more thorough testing before shipping.
|
|
|
Post by mitchkricun on Nov 1, 2015 12:41:46 GMT -6
Tell you what, you pay shipping and I'll fix it for you. Wow!
|
|
|
Post by kidvybes on Nov 1, 2015 13:11:52 GMT -6
So, this is what it's come to? Doesn't he test the units before they go out? Very depressing. If he sends Jim Williams a unit that hums out of the box, what chance do the rest of us have? It appears the back log that exists with RMA has a lot to do with repairs and redesigns, that could have been avoided with more thorough testing before shipping. ...that guy bought a pre-owned/modded unit, not straight from Ross...I got mine recently and he emailed me a few days prior to shipping, telling me he was testing the unit (burn-in) and would ship once he was sure it was working properly...using it now for a couple of months with no problem...I think the problems are more about the waiting then about the issues with sonic troubles...I suspect what he builds for guys like Jim W may stray from his basic models, and that may add to the potential for problems...I own his basic PCM4222 and 1794 units...solid!
|
|
|
Post by winetree on Nov 1, 2015 13:47:45 GMT -6
Curious. What did you get and when did you order and pay for it?
|
|
|
Post by kidvybes on Nov 1, 2015 14:26:32 GMT -6
Curious. What did you get and when did you order and pay for it? ...you talkin' to me? Attachments:
|
|
|
Post by winetree on Nov 1, 2015 16:18:40 GMT -6
Curious. What did you get and when did you order and pay for it? ...you talkin' to me? Yes, Sorry.
|
|
|
Post by winetree on Nov 1, 2015 16:33:57 GMT -6
...you talkin' to me? Yes, Sorry. Never mind. Got this off the other site. ..talk about coincidence!...just received an email with a tracking #...how crazy is that? (maybe Ross monitors this thread?)... ...anyway, ordered 6/22/15 and shipped 8/25/15...not too shabby!...I feel fortunate, after hearing previous lead-times...
|
|
|
Post by dandeurloo on Nov 1, 2015 18:23:09 GMT -6
Yeah, I think he is getting his speeds down a little. I know a few guys still waiting.
|
|
|
Post by winetree on Nov 1, 2015 19:23:37 GMT -6
Yeah, I think he is getting his speeds down a little. I know a few guys still waiting. Yes and no. Tony's been waiting almost a year and Me about 8 months. RM gets paid up front which I think kills his incentive to speed up delivery. A contractor takes a deposit and hurries to finish the job to get the balance. If I had a business that had that much demand RM, I'd hire some help.
|
|
|
Post by tonycamphd on Nov 1, 2015 19:32:13 GMT -6
Yeah, I think he is getting his speeds down a little. I know a few guys still waiting. Yes and no. Tony's been waiting almost a year and Me about 8 months. RM gets paid up front which I think kills his incentive to speed up delivery. A contractor takes a deposit and hurries to finish the job to get the balance. If I had a business that had that much demand RM, I'd hire some help. Techniacally it's been since April for agreed delivery for me, but i let him off the hood because of changes i made, so if you add a couple months for the changes, i'd be over waiting since June, and thats at 6 months. I wonder if i'm the longest out there at this point?
|
|
|
Post by svart on Nov 1, 2015 19:53:43 GMT -6
Someone mentioned 7 or 8 months somewhere, but i forget where i read it..
|
|
|
Post by winetree on Nov 1, 2015 20:10:19 GMT -6
Yes and no. Tony's been waiting almost a year and Me about 8 months. RM gets paid up front which I think kills his incentive to speed up delivery. A contractor takes a deposit and hurries to finish the job to get the balance. If I had a business that had that much demand RM, I'd hire some help. Techniacally it's been since April for agreed delivery for me, but i let him off the hood because of changes i made, so if you add a couple months for the changes, i'd be over waiting since June, and thats at 6 months. I wonder if i'm the longest out there at this point? Ya, 6 months past AGREED Delivery. When did you order them? You said end of last November 2014. That's almost 1 year.
|
|
|
Post by tonycamphd on Nov 1, 2015 22:50:12 GMT -6
Techniacally it's been since April for agreed delivery for me, but i let him off the hood because of changes i made, so if you add a couple months for the changes, i'd be over waiting since June, and thats at 6 months. I wonder if i'm the longest out there at this point? Ya, 6 months past AGREED Delivery. When did you order them? You said end of last November 2014. That's almost 1 year. I ordered the last week of December 2014
|
|
|
Post by svart on Nov 1, 2015 23:01:55 GMT -6
So conservatively 10-ish months.. Still though, I would never wait more than 30 days for something I pre-paid, however it seems that a lot of people got the "it'll ship in a few days" replies that end up stringing them along in the wait..
I also just don't understand all the folks defending RM's multi-month wait times, seemingly poor quality control and poor communication. That part just boggles my mind, but I guess some people are just more tolerant than I am.
|
|
|
Post by tonycamphd on Nov 1, 2015 23:11:29 GMT -6
I'm not defending him anymore, he was offered very reasonable options for help(not by me) and chose to stay on the same moronic path, I'm confident I'll get my rigs, and I'm lucky enough to know the right people that can make sure they work as advertised, but I won't ever buy or suggest anyone to buy from him again, I don't care how good his stuff can sound, all the BS is just not a tenable situation for any business to sustain, and he will eventually fail.
|
|
|
Post by lolo on Nov 2, 2015 0:01:05 GMT -6
I waited close to a a year for my Superbeast :-)
|
|
|
Post by lolo on Nov 2, 2015 0:02:35 GMT -6
BTW svart you still doing runs on your Svart box?
|
|
|
Post by jcoutu1 on Nov 2, 2015 6:47:52 GMT -6
I'm not defending him anymore, he was offered very reasonable options for help(not by me) and chose to stay on the same moronic path, I'm confident I'll get my rigs, and I'm lucky enough to know the right people that can make sure they work as advertised, but I won't ever buy or suggest anyone to buy from him again, I don't care how good his stuff can sound, all the BS is just not a tenable situation for any business to sustain, and he will eventually fail. The idea that you're willing to pay JW to check these out and fix the issues with your BRAND NEW converters is mind blowing. Is RM going to foot the JW bill?
|
|
|
Post by formatcyes on Nov 2, 2015 14:19:40 GMT -6
|
|
|
Post by svart on Nov 2, 2015 14:44:31 GMT -6
Understand you do, but lets keep the threads separate so no feathers get ruffled, please.
|
|
|
Post by porkyman on Nov 6, 2015 18:17:40 GMT -6
someone found my old add on gs asking if i was still selling my barebeast (upgraded opa's). i said yes, so i fired it up to see if it still worked and i was stunned at how good it sounded. i had abandoned it in favor of the motu 16a. when i a/b'd them at the time i thought they were close enough but i was wrong. there is a pretty big difference between the two. from the width of the 3d image, to the clarity in the low end. the biggest thing ive noticed is the ability to hear reverbs in songs. how much is actually there and how long the tails. it makes it much more comprehensible when trying to match reference tracks.
it really is a great piece of gear. i wasnt able to let it go.
|
|
|
Post by properagenda on Dec 8, 2015 18:43:51 GMT -6
Hello, everyone!
After reading this entire thread, I decided to join in to offer my experience dealing with Ross Martin. It seems things have been quiet in this thread, so I figured I'd bump it.
I have ordered PCM4222 yesterday(12/7). It wasn't an order to build scenario. The unit was purchased from the 'on sale' section of the website. According to Ross, that unit was build by mistake, so it is ready to go. Ross replied to both of my emails within 24 hours. So that's a good start. Not certain if I will get another email with shipping confirmation, but he did state that unit has been tested and is ready to go as soon as it is packaged. I will continue reporting as things develop.
On a side note: I currently use RME Hdspe Aio card. From the feedback I came across from different people, converters on this particular card are average at best. I recently added Dangerous Music Source to my set up and DAC quality difference is definitely noticeable. Should I expect a significant bump in quality of AD conversion after upgrading to PCM4222?
|
|
|
Post by tonycamphd on Dec 8, 2015 19:03:06 GMT -6
yes, but don't expect to hear that improvement for about a year! Also, welcome to the forum, not because i feel the need to welcome you, but because I'm afraid not to, considering your avatar..
|
|