I think they've been tested... posted a couple weeks ago in this thread
Envoyé de mon LG-H933 en utilisant Tapatalk
Lumin X1 Fiber Optic Network Discussions
- Thread starter wklie
- Start date
Envoyé de mon LG-H933 en utilisant Tapatalk
Hello, since I bought the Clones CiscoSG112-24 MOD and that I got now a pair of identical FSP (Cisco GLC-ZX-SMD Compatible 1000BASE-ZX SFP 1550nm 80km DOM Transceiver Module), I still need to know what kind of fiber cord (Duplex / Simplex / UPC / APC) connectors (SC / SC / LC / ST / FC). It should be the same connectors at both ends. Can someone from Lumin show me an precise exemple with a link?
Thank you verry much! :hey:
Vincent
Thank you verry much! :hey:
Vincent
Attachments
vortrex
New member
You want single mode, duplex, LC connectors, UPC polish. Same on both sides.
vortrex
New member
I'll reiterate though, I would either get different SFPs or put attenuators on both sides.
From Fiberstore...
"* A 10 dB optical attenuator should be inserted between the fiber-optic cable plant and the receiving port on the SFP at each end of the link whenever the fiber-optic cable span loss is less than 8 dB."
Optical loss is about .25 dB per km and .35 dB per connector. You will have only about 1 dB of loss. This is going to create a bad quality connection.
From Fiberstore...
"* A 10 dB optical attenuator should be inserted between the fiber-optic cable plant and the receiving port on the SFP at each end of the link whenever the fiber-optic cable span loss is less than 8 dB."
Optical loss is about .25 dB per km and .35 dB per connector. You will have only about 1 dB of loss. This is going to create a bad quality connection.
vortrex
New member
The correct SFP from a networking perspective would be multimode, which is short range and intended for inside wiring.
https://www.fs.com/products/11774.html
I don't know why Lumin is suggesting long range for SFPs. A question for them I suppose. If you have to get a long range for some reason I would get https://www.fs.com/products/48928.html.
https://www.fs.com/products/11774.html
I don't know why Lumin is suggesting long range for SFPs. A question for them I suppose. If you have to get a long range for some reason I would get https://www.fs.com/products/48928.html.
Ctsooner
New member
Guys, now that the cost to do this is getting into the $800 plus range you may want to look at the $134 delivered EMO filter or even the $780 Waversa device that does the optical conversion. I have had two separate optical isolation switches in the were audiophile grade from Cisco and the filter I just installed had down the same thing. Doesn’t change the sound a bit. Lowered the. Lose floor big time. I use the Ethernet connection on my Ayre QX5 and stream. Their Ethernet internal board already has broken up the connection and uses optical and it also has a built in power conditioning unit. I have a few friends who have also switched to the EMO filters and say they get the same great results.
Just saying there may or may not be a couple of easier ways to do this and possibly for less. That waversa unit also has usb connections etc. I don’t know that much about the waversa other thank the distributor is a good friend, but ketch would never have taken it on if he didn’t feel it was the best. Keep posting as I love learning more. Thanks guys.
Just saying there may or may not be a couple of easier ways to do this and possibly for less. That waversa unit also has usb connections etc. I don’t know that much about the waversa other thank the distributor is a good friend, but ketch would never have taken it on if he didn’t feel it was the best. Keep posting as I love learning more. Thanks guys.
vortrex
New member
$800?
Two SFPs = $22, one media converter = $23, one patch cable = $3. I come up with $48.
Two SFPs = $22, one media converter = $23, one patch cable = $3. I come up with $48.
Ctsooner
New member
This is about 8k usd? Then you need an external LPS to max it out. Is this correct? Curious. Thanks
- Thread Author
- #73
We recommend single mode SFP based on subjective listening test results. That's consistent with similar findings in computeraudiophile when doing optical network isolation with different DACs. A dealer has done listening tests of different SFP modules. I'll see if I can find out more about his results next week.
Hello Peter,
I hope you are well. I spent several hours this week reading about SFPs and Fiber Cables in order to buy the right combination. Unfortunately, I bought several products that do not seem combatible or, as Vortrex mentioned, could damage the Lumin or the SG112-24 MOD if no attenuator is added. I think all these products will end up in the trash.
Please, could I have an example of an SFP / Cables Combination that allows me to reach a single mode connection safely?
I would prefer a Cisco SFP and the best quality cable. My budget can be stretched up to 1000 USD.
Thank you very much in advance.
I hope you are well. I spent several hours this week reading about SFPs and Fiber Cables in order to buy the right combination. Unfortunately, I bought several products that do not seem combatible or, as Vortrex mentioned, could damage the Lumin or the SG112-24 MOD if no attenuator is added. I think all these products will end up in the trash.
Please, could I have an example of an SFP / Cables Combination that allows me to reach a single mode connection safely?
I would prefer a Cisco SFP and the best quality cable. My budget can be stretched up to 1000 USD.
Thank you very much in advance.
- Thread Author
- #75
The most common 10km and anything below should not cause any damage to the SFP for short length without attenuation. We've also tested various models from fs.com with no problem. In particular, we have been using TP-Link TL-SM311LS (single mode 1310nm) for a long time.
Ctsooner
New member
Honestly, I'm just going to task my computer guy. He's much more knowledgable than I am, lol. I'd like to share this link for some folks. Was told that this is a special device, but that most folks screw up the batteries. If they just leave the unit on, they'll be fine. It's a 1500 unit, but go read about what it does. There are also youtube vid's on it.
http://www.waversasystemsusa.com/waversa-smart-hub/5tx5ib4wad6ogpwrxuhaquuc1v043a
I’ve been patiently waiting while I got over 500 hours on the X1. Since that time, I’ve been experimenting with the Ethernet Vs Optical connection. I find the Optical connection gives you greater clarity and focus, with more energy in the highs, but with that, comes an increase in sibilance.
I like them both and it depends on the speakers, personal preferences and the rest of the system as to which someone will ultimately chose. But, never the less, having choices is good!
Sent from my iPhone using Tapatalk
I like them both and it depends on the speakers, personal preferences and the rest of the system as to which someone will ultimately chose. But, never the less, having choices is good!
Sent from my iPhone using Tapatalk
- Thread Author
- #78
Last night we had a Lumin X1 event at Volent Speaker Hong Kong office. The host played the same music after switching among copper LAN, multi-mode SFP, single-mode 1310nm SFP, and single-mode 1550nm SFP available from fs.com. The host and the guests agreed that different SFP modules sound different. (Note: single mode and multi mode require different types of fiber.)
Although there is no universal consensus on which sounds best (which is normal and a necessity for different manufacturers in the industry to exist), this finding implies that it is possible to tune the sound of Lumin X1 for different preferences and systems by trying different inexpensive SFP modules.
Going forward I'd recommend the use of optical network switch instead of non-SFP fiber media converter (FMC), to allow for the flexibility of using different SFP modules. Typical FMC is not that much cheaper than optical network switch anyway.
As for why different SFP module can contribute to different SQ, my hypothesis is that different electronics with different noise profile may impact SQ. Inserting an SFP module is actually adding electronics to the player. As Mike says, choice is good. There will be users who prefer specific types of SFP, and there will be users who prefer copper LAN (in a really well optimized network setup with LPS for everything.)
A visitor who heard the same setup two weeks ago said that with the Lumin X1 burned in, he heard improved details this time.
We also demonstrated Roon DSD512 upsampling for playback by Lumin X1.
Details of the setup:
- Lumin X1
- Volent x Clones Cisco SG112-24 OCXO modified network switch
- Plixir LPS for the network switch
- Bespoke passive preamplifier
- WestminsterLab mono amp
- WestminsterLab cables (including WestminsterLab Lumin X1 DC cable at GBP1000).
- Volent Paragon VL-3.5 speakers
BlueFox
New member
Sounds like just one more reason to directly attach the music to the X1.
- Thread Author
- #80
A small flash drive may be fine, but a larger spinning or SSD drive introduces its own electric noise, EMI, and vibration (for spinning drive), and draws power from Lumin player, so it exerts additional demand to the power supply. As we know power supply is of utmost importance to audio SQ...
Several Lumin app browsing features are unavailable with the use of direct attached USB drive. Browsing of large drives will also be slow. So we always recommend the use of MinimServer or Lumin L1.