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Post by plinker on Jun 1, 2021 20:39:57 GMT -6
Hey all- Sorry about the website, looks like the latest PHP Update my hosting site did killed it... Will have to get on that, but honestly the whole site is fairly out of date and make it look like i'm only an amp tech. 😆 I am building them complete. Right now my price is sitting at $18CAD per unit fully assembled so I think it's a tad cheaper than the WBS units. My units don't have the second bottom board covering the solder side, but I coat it with a high-voltage conformal coating which should be sufficient for most environments. So far the reports from my 55 and 60 unit studios are positive, and they're functioning as expected which is great news for me (my first run I made a stupid mistake on the layout and had to chuck 120 boards 😳) I'm using Amphenol connectors, double sided 1.6mm FR-4 boards. I'm not getting thread notifs right now for some reason. I'll keep checking back here, I'm not sure if posting my email would run afoul of any board rules, I don't want to violate any of the rules around commercial entities on here! -Josh
Hi Josh,
I'm excited that you have picked-up the mantle from Ward-Beck. I will certainly be ordering a few for backups, and replacements.
Can you confirm that the pinout matches the the Ward-Beck model? Or, can you confirm that it matches the Redco pinout? -- same thing.
Thanks, Jim
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Post by plinker on Jun 6, 2021 16:10:43 GMT -6
I recently added another ULN8. Put both in a box and thought I'd share the rear view (if you know what I mean).
Here's 5 Ward Beck's stacked near each other.
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Post by amplexusmusic on Jun 11, 2021 7:55:32 GMT -6
Hi Josh,
I'm excited that you have picked-up the mantle from Ward-Beck. I will certainly be ordering a few for backups, and replacements.
Can you confirm that the pinout matches the the Ward-Beck model? Or, can you confirm that it matches the Redco pinout? -- same thing.
Thanks, Jim
Yup, it is! The pinout specs were pulled directly from the QTP website QTP Info which was set up by WBS afaik. The Cat5 B standard is used for the RJ45 pinouts. DB-25's are Tascam standard.
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Post by amplexusmusic on Jun 11, 2021 8:13:43 GMT -6
I have now fixed my notification settings so I'll actually GET some 😆
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ericn
Temp
Balance Engineer
Posts: 14,934
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Post by ericn on Jun 11, 2021 12:22:04 GMT -6
OK I get the attraction to this for remote work, but isn’t this thing converting the single to a digital format to send it down the cat 5/6 cable? I just don’t understand why you would want to introduce any conversion before the MH, isn’t that one of the reasons for going MH? Also why not just invest in a digital snake for simplicity? If I’m wrong about the conversion somebody explain to me how this works.
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Post by Blackdawg on Jun 11, 2021 14:07:21 GMT -6
OK I get the attraction to this for remote work, but isn’t this thing converting the single to a digital format to send it down the cat 5/6 cable? I just don’t understand why you would want to introduce any conversion before the MH, isn’t that one of the reasons for going MH? Also why not just invest in a digital snake for simplicity? If I’m wrong about the conversion somebody explain to me how this works. No conversion is happening. It's just pure copper connection. So if you're running digital aes signal then you can either use single or double wire mode. Which just changes how the converter itself uses it. I use the wbs ones with grace pres and avid converters for aes signal and in single wire mode it allows for 8 ch aes. No issues. Digital snake isn't all that different other than I guess if it's ip protocol like Dante. This setup is just a copper connection using eithernet cable.
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ericn
Temp
Balance Engineer
Posts: 14,934
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Post by ericn on Jun 11, 2021 14:16:17 GMT -6
OK I get the attraction to this for remote work, but isn’t this thing converting the single to a digital format to send it down the cat 5/6 cable? I just don’t understand why you would want to introduce any conversion before the MH, isn’t that one of the reasons for going MH? Also why not just invest in a digital snake for simplicity? If I’m wrong about the conversion somebody explain to me how this works. No conversion is happening. It's just pure copper connection. So if you're running digital aes signal then you can either use single or double wire mode. Which just changes how the converter itself uses it. I use the wbs ones with grace pres and avid converters for aes signal and in single wire mode it allows for 8 ch aes. No issues. Digital snake isn't all that different other than I guess if it's ip protocol like Dante. This setup is just a copper connection using eithernet cable. I thought he said he was inputting mic level if that’s not the case I get it.
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Post by Blackdawg on Jun 11, 2021 14:20:28 GMT -6
No conversion is happening. It's just pure copper connection. So if you're running digital aes signal then you can either use single or double wire mode. Which just changes how the converter itself uses it. I use the wbs ones with grace pres and avid converters for aes signal and in single wire mode it allows for 8 ch aes. No issues. Digital snake isn't all that different other than I guess if it's ip protocol like Dante. This setup is just a copper connection using eithernet cable. I thought he said he was inputting mic level if that’s not the case I get it. I've never used them for analog lines. The OP has and uses them for mic level signals which seem to work fine to get to a mic pre that use db25 connections. I think he has it going to the redco rj45 to XLR break out boxes for that.
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laz
New Member
Posts: 1
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Post by laz on Jun 11, 2021 19:36:39 GMT -6
I love this idea of DB25 to RJ45. Cat cables are great quality and cheap due to there are billions of them. But how do the plugs handle the grounds? Do they buss them together?
For a TRS DB25-DB25 it would be 3 strands x 8 channels = 24 2 cat 5/6 are only 16 wires so for 8 channels it would be the Ring/Tip then it would have to share a ground?
For patch bays that use looped ground (vertically grounded horizontally isolated) the RJ45 route would negate this and turn it into a bussed/star ground?
Unless I am missing something. DB25 cables are so expensive at $200 for your average 10'+ cable it costs an arm and a leg to wire a studio. I am looking at 2 96 TT PBs with 8x25' DB25 and 4x1.5' DB25 and for even low cost cables its still over $1000 for Mogami its $2500.
Would love to find a way to use the RJ45 route but I have heard ground loop issues when everything is a bussed ground.
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Post by plinker on Jun 11, 2021 23:48:43 GMT -6
I thought he said he was inputting mic level if that’s not the case I get it. I've never used them for analog lines. The OP has and uses them for mic level signals which seem to work fine to get to a mic pre that use db25 connections. I think he has it going to the redco rj45 to XLR break out boxes for that. That's correct. I'm running CAT6 SSTP (Shielded, Shielded Twisted Pair) for both mic and line signals (both input/output) from my ULN8 from db25 connectors.
You must use the correct cable to enable +48v phantom to active mics (see my original post).
CAT6 SSTP is seriously low-noise cable. Each twisted pair is shielded in foil and there is another shield around the entire cable.
Bitchin' good. Bitchin' light. Bitchin' cheap.
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Post by plinker on Jun 11, 2021 23:54:03 GMT -6
I love this idea of DB25 to RJ45. Cat cables are great quality and cheap due to there are billions of them. But how do the plugs handle the grounds? Do they buss them together? For a TRS DB25-DB25 it would be 3 strands x 8 channels = 24 2 cat 5/6 are only 16 wires so for 8 channels it would be the Ring/Tip then it would have to share a ground? For patch bays that use looped ground (vertically grounded horizontally isolated) the RJ45 route would negate this and turn it into a bussed/star ground? Unless I am missing something. DB25 cables are so expensive at $200 for your average 10'+ cable it costs an arm and a leg to wire a studio. I am looking at 2 96 TT PBs with 8x25' DB25 and 4x1.5' DB25 and for even low cost cables its still over $1000 for Mogami its $2500. Would love to find a way to use the RJ45 route but I have heard ground loop issues when everything is a bussed ground. Thanks! If I remember correctly, the exterior/common shield acts as common ground. I haven't experienced any ground loop issues -- I'm not sure how that would happen in my particular configuration.
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