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#1
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high quality 1x2 digital audio AB switch?
I've got a situation where I need to route the S/PDIF output of a
Meridian preamp/processor to one of two different destinations. Can't go to both simultaneously, so a DA won't work; has to select between Output A and Output B. Also need to be able to switch between these two outputs remotely, either via RS-232, 12v trigger, or infrared. And, irrespective of any alleged or imagined sonic benefits, I'd like to use something whose build quality is commensurate with a $9000 Meridian preamp/processor. Any suggestions? I've been Googling all morning & can't find anything specifically designed to do this. (Closest I came was a Niles AVS-2, which is a little $75 gadget for routing composite video but which ought to pass S/PDIF. Just can't bring myself to pass the output of a $9000 preamp through a $75 switcher.) Ideas greatly appreciated. Thanks. |
#2
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Roscoe East wrote:
I've got a situation where I need to route the S/PDIF output of a Meridian preamp/processor to one of two different destinations. Can't go to both simultaneously, so a DA won't work; has to select between Output A and Output B. Also need to be able to switch between these two outputs remotely, either via RS-232, 12v trigger, or infrared. And, irrespective of any alleged or imagined sonic benefits, I'd like to use something whose build quality is commensurate with a $9000 Meridian preamp/processor. How about a simple 75 ohm SPDT coaxial relay? Not exactly high tech, but it will work just fine. Apply 12V and it disables output A in favor of output B. http://www.teledynerelays.com/pressr.../ccr-33mpr.asp Any suggestions? I've been Googling all morning & can't find anything specifically designed to do this. (Closest I came was a Niles AVS-2, which is a little $75 gadget for routing composite video but which ought to pass S/PDIF. Just can't bring myself to pass the output of a $9000 preamp through a $75 switcher.) I would bet that Graham-Patten probably mkaes a more expensive device like the AVS-2. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#3
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On 28 Jul 2005 11:48:09 -0700, "Roscoe East"
wrote: which is a little $75 gadget for routing composite video but which ought to pass S/PDIF. Just can't bring myself to pass the output of a $9000 preamp through a $75 switcher.) Ideas greatly appreciated. Thanks. If you shop around, you could probable pay more, (they may have appropriately priced cables too) Frank /~ http://newmex.com/f10 @/ |
#4
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"Roscoe East" wrote in message
oups.com I've got a situation where I need to route the S/PDIF output of a Meridian preamp/processor to one of two different destinations. Can't go to both simultaneously, so a DA won't work; has to select between Output A and Output B. Just for grins please explain why you can't drive both outputs at the same time. Seems like a pretty rare situation where you couldn't. |
#5
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In article .com writes: I've got a situation where I need to route the S/PDIF output of a Meridian preamp/processor to one of two different destinations. Can't go to both simultaneously, so a DA won't work; has to select between Output A and Output B. Also need to be able to switch between these two outputs remotely, Dow-Key is the grandaddy of coax relays. You should be able to find something he http://tinyurl.com/dsu3o Coax relays show up at hamfests all the time for $25 or so, mostly with UHF connectors, which aren't recommended for use above 300 MHz, but I think that it will be a long time before you have sample rates high enough to have frequency components up into that range. -- I'm really Mike Rivers ) However, until the spam goes away or Hell freezes over, lots of IP addresses are blocked from this system. If you e-mail me and it bounces, use your secret decoder ring and reach me he double-m-eleven-double-zero at yahoo |
#6
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On 28 Jul 2005 15:15:32 -0400, (Scott Dorsey) wrote:
How about a simple 75 ohm SPDT coaxial relay? Not exactly high tech, but it will work just fine. Apply 12V and it disables output A in favor of output B. How about this? http://www.broadcasttools.com/view_p...p?productID=30 Maybe a compromise between a raw relay and a really expensive device. I've installed 6 and they are quite reliable. Julian |
#8
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On Thu, 28 Jul 2005 17:19:49 -0400, "Arny Krueger"
wrote: I've got a situation where I need to route the S/PDIF output of a Meridian preamp/processor to one of two different destinations. Can't go to both simultaneously, so a DA won't work; has to select between Output A and Output B. Just for grins please explain why you can't drive both outputs at the same time. Seems like a pretty rare situation where you couldn't. Especially an app that doesn't include its own input switching. Curiouser and curiouser... But then, the world is ultimately unknowable, or is it? Chris Hornbeck |
#9
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Those of us who read offline would be really grateful if those of you
who post links would also include a really quick description of what you're linking to. When you post a link and write "How about this?" I have no idea what you're talking about because I can't just click on the link. I know that's my problem and not yours. I mention it as an "if you please" request and not a complaint. -- "It CAN'T be too loud... some of the red lights aren't even on yet!" - Lorin David Schultz in the control room making even bad news sound good (Remove spamblock to reply) |
#10
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Arny Krueger wrote:
"Roscoe East" wrote in message oups.com I've got a situation where I need to route the S/PDIF output of a Meridian preamp/processor to one of two different destinations. Can't go to both simultaneously, so a DA won't work; has to select between Output A and Output B. Just for grins please explain why you can't drive both outputs at the same time. Seems like a pretty rare situation where you couldn't. Think about what I wrote: it's not both Outputs, it's both Inputs that I can't drive simultaneously. So I have to route a single output selectively between one of two different inputs, but not both simultaneously. The inputs here are both Meridian DSP digital active speakers. It's as if we had two pairs of speakers in two separate zones. Except, in this case, the two zones are both in the same room! Having the signal routed to both pairs of speakers simultaneously would completely corrupt imaging, etc. I suppose I could find a way to remotely power on/off each pair of active speakers so that I just turn off the amps rather than disable the input to the unused pair of speakers. But I thought (foolishly, apparently, as no one's come up with a solution that fits the mandate) that a swanky S/PDIF AB selector switch would be a common item. |
#11
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"Roscoe East" wrote in message
oups.com Arny Krueger wrote: "Roscoe East" wrote in message oups.com I've got a situation where I need to route the S/PDIF output of a Meridian preamp/processor to one of two different destinations. Can't go to both simultaneously, so a DA won't work; has to select between Output A and Output B. Just for grins please explain why you can't drive both outputs at the same time. Seems like a pretty rare situation where you couldn't. Think about what I wrote: it's not both Outputs, it's both Inputs that I can't drive simultaneously. So I have to route a single output selectively between one of two different inputs, but not both simultaneously. My bad, I meant both inputs. If you just hooked both inputs to the output with a passive Y cable, there's some chance that both sets of speakers might work because digital outputs tend to be overbuilt and digital inputs tend to be more sensitive than the bare minimum. If you used a video DA, both speaker digital inputs could certainly be driven at the same time. I suppose I could find a way to remotely power on/off each pair of active speakers so that I just turn off the amps rather than disable the input to the unused pair of speakers That would be the equipment and energy conservative way to go. But I thought (foolishly, apparently, as no one's come up with a solution that fits the mandate) that a swanky S/PDIF AB selector switch would be a common item. Actually they have - a standard video switch and cabling will do the job. SP/DIF and baseband video meet roughly the same specs, especially when it comes to passive switches. It might break your heart, the off-the-shelf $50 video switches and DAs from Radio Shack will do the job, and do it well. Tell you what, order them from me, and I'll be happy to mark them up 1,000% so you can feel better. |
#12
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It's a nice looking simple half rackish sized blue box with large round
black buttons and a few LEDs. Their ad text says : The Broadcast Tools® SS 2.1/Term III passively switches or routes a variety of electrical signals to a destination. The SS 2.1/Term III selects any one of 2 stereo inputs to a single stereo output. The SS 2.1/Term III provides PASSIVE switching through gold contact relays. The passive switching means that the unit can route a signal in either direction. Due to the passive nature of the switching, any input level and impedance can be used. Inputs may be balanced or unbalanced, while output levels, impedance, distortion, noise and balancing will match that of the selected input. In addition to their normal use with audio signals, the unit can also be used to switch digital signals and telephone lines. Features: Operational control by front panel switches with LED indicators, contact closures, 5-volt TTL/CMOS logic levels and/or the multi-drop RS-232 serial port. Removable screw terminals (Euro) are provided for audio and remote control connections. Audio switching via sealed relays utilizing 2-form-C bifurcated - crossbar silver alloy with gold overlay contacts. Logic functions via microprocessor and non-volatile memory The power-up feature allows the user to select which one source is active at power up, including the last source selected. Three logic-switching modes, interlock, sustained or toggle. Configuration via dip switches The "ENABLE" switch provides a safety lock to the front panel source selection switches. The audio "MUTE" switch allows the user to turn off the audio output when activated. Source number one is configured to route audio to the output in the case of loss of power to the unit. Non-selected sources are terminated with 10K ohms, load resistors. Relays provided for remote status. The SS 2.1/Term III may be set on a desktop, mounted on a wall or as part of the new RA-1, "Rack-Able" mounting shelf. Optional RA-1 rack shelf for mounting up to three units in 1-RU Applications: Automation source switching, EAS audio switching or any type of stereo, monaural, composite audio, AES/EBU, ISDN, RS-232/422/485, telephone line switching, multiple station music on-hold and/or PA switching, -- John L Rice "Lorin David Schultz" wrote in message news:VyoGe.171197$tt5.29080@edtnps90... Those of us who read offline would be really grateful if those of you who post links would also include a really quick description of what you're linking to. When you post a link and write "How about this?" I have no idea what you're talking about because I can't just click on the link. I know that's my problem and not yours. I mention it as an "if you please" request and not a complaint. -- "It CAN'T be too loud... some of the red lights aren't even on yet!" - Lorin David Schultz in the control room making even bad news sound good (Remove spamblock to reply) |
#13
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John L Rice wrote:
It's a nice looking simple half rackish sized blue box with large round black buttons and a few LEDs. Their ad text says : The Broadcast Tools=AE SS 2.1/Term III passively switches or routes a var= iety of electrical signals to a destination. The SS 2.1/Term III selects any o= ne of 2 stereo inputs to a single stereo output. The SS 2.1/Term III provides PASSIVE switching through gold contact relays. The passive switching means that the unit can route a signal in either direction. Due to the passive nature of the switching, any input level and impedance can be used. Inputs may be balanced or unbalanced, while output levels, impedance, distortion, noise and balancing will match that of the selected input. In addition to their normal use with audio signals, the unit can also be used to switch digital signals and telephone lines. Ooh, looks like we may have a winner here, folks! Thanks Julian (and John). |
#14
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#16
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In article znr1122650586k@trad, Mike Rivers wrote:
But if you just want to play with the concept, you could try using a TV antenna splitter to give you two outputs from a single input. The level will drop, but unless it's below the threshold of the receiver on the speaker, it won't matter. Turn on one and turn off the other. This doesn't work because the low frequency response of the splitter is not good enough. It _is_ possible to use an Allen Avionics video (20 Hz-6 MHz) transformer for the job, but it would be a lot cheaper to buy a gold-plated relay. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#17
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"Mike Rivers" wrote in message
news:znr1122650586k@trad But if you just want to play with the concept, you could try using a TV antenna splitter to give you two outputs from a single input. The level will drop, but unless it's below the threshold of the receiver on the speaker, it won't matter. Turn on one and turn off the other. Given the usual attenuation in a typical antenna splitter, I doubt that you'd get the speakers to synch up. These things are also directional couplers and provide a degree of isolation of the load to the source. The results are even greater losses. |
#18
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Roscoe East wrote: I've got a situation where I need to route the S/PDIF output of a Meridian preamp/processor to one of two different destinations. Can't go to both simultaneously, so a DA won't work; has to select between Output A and Output B. Also need to be able to switch between these two outputs remotely, either via RS-232, 12v trigger, or infrared. And, irrespective of any alleged or imagined sonic benefits, I'd like to use something whose build quality is commensurate with a $9000 Meridian preamp/processor. Any suggestions? I've been Googling all morning & can't find anything specifically designed to do this. (Closest I came was a Niles AVS-2, which is a little $75 gadget for routing composite video but which ought to pass S/PDIF. Just can't bring myself to pass the output of a $9000 preamp through a $75 switcher.) Ideas greatly appreciated. Thanks. Have you looked at Bob Katz's box? http://tinyurl.com/bohlp The VSP Digital Audio Control Center Inputs and Outputs The VSP model P (professional) has six digital inputs: 3 coaxial (RCA), 2 Toslink optical (AT&T ST-Optical optional), 1 XLR. It has six record outputs, of the same flavors. Last, it has 3 monitor outputs, 1 coax, 1 optical, and 1 XLR, designed to feed a D/A converter. The model S (standard, or consumer) only has the six inputs and outputs, does not have the monitor section. Any of the six inputs will accept AES/EBU (professional) software or S/PDIF (IEC 958, consumer) software. The six record outputs of the VSP/P can be switched between consumer or professional software via a front panel switch. The six outputs of the VSP/S are permanently set to deliver S/PDIF software. Emphasis is handled automatically, and the signal path is 24 bits. What the all-purpose VSP does The VSP is like a digital audio patchbay. It has no analog inputs or outputs. Mastering studios, dubbing studios, and recording engineers will find many uses for the VSP. Routing The VSP will switch between any of 6 digital sources (e.g., CD, DAT, DAW) and feed them simultaneously to 6 places. Additionally, the model VSP/P will switch any of those six sources to a monitor output. A simple A/B monitor switch permits comparing source and tape (or any two sources). Additional Features Both models have a very sophisticated jitter reduction circuit. The pro model's sample rate converter will accept any incoming rate from below 32 kHz to above 48 khz and turn it into the compact disc standard of 44.1 kHz. The pro model also has an external processor loop, which can be inserted in the record or monitor chain at the touch of a button, enabling comparison of a reverberated signal, or a compressed signal, for example; or for inserting a compressor between two DAT machines; and so on. Digital Domain 931 NSR 434 Suite 1201-168 Altamonte Springs, FL 32714 USA (800) 344-4361 -- |
#19
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