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April 14, 2018, 10:37 PM #1
Dual input to amplifier challenge
I am trying to combine my 2CH and HT systems together, while my ARC Ref6 does have PROC mode it still utilizes the tubes.
My plan was to utilize an XLR Y-Cable to take the output signal from the Ref6+SP3 -> amplifier. With the caveat that both devices could not be powered on at the same time.
I purchased a cheap 2F -> 1M XLR to test, the cable works with one of the inputs connected i.e. from the Ref6, but when I connect the second input (i.e. SP3 and the unit is in standby) it goes dead.
Any ideas? I am guessing there is some type of signal coming from the units even when they are in Standby which prevents this scenario from working.Wilson Audio Alexia + Mezzo | Dan D'Agostino Momentum PRE & S250 | Esoteric P02x & D02x | Torus AVR2-16 | Marantz AV8805 | Panasonic UB9000 | Bryston 7B3 & 9BSST2 | ScreenTechnics 125" 2.37 Screen | JVC X7900 | Krix A20 (4) | JL Audio F113 (2)
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April 15, 2018, 08:13 PM #2
Re: Dual input to amplifier challenge
Without knowing the schematic / topology of the output sections of the pre/pro and 2-channel preamp, paralleling them is a total crap shoot. Even if it worked, you would probably be adding distortion by having the unused output driven by the active output.
To pull this off, you would need some sort of switchbox that isolated the two outputs - and that would come with its own sonic signature.
TomTom
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April 16, 2018, 07:08 AM #3
Re: Dual input to amplifier challenge
Wilson Audio Alexia + Mezzo | Dan D'Agostino Momentum PRE & S250 | Esoteric P02x & D02x | Torus AVR2-16 | Marantz AV8805 | Panasonic UB9000 | Bryston 7B3 & 9BSST2 | ScreenTechnics 125" 2.37 Screen | JVC X7900 | Krix A20 (4) | JL Audio F113 (2)
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April 16, 2018, 10:39 AM #4
Re: Dual input to amplifier challenge
I don't have gear like yours and only have the option to use standard ICs. But, I do use my 2CH rig as the Front L&R of my HT setup. I send the Front L&R Pre Outs from my HT to an input of my Pre. I put the Pre volume knob at 12oclock and then run the Audyssey software do the leveling. Any time I use the HT, I set the pre knobs to the same 12oclock position (I have click steps on my volume knobs so always the same position.
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Brian
Main System - Rotel RCD-1572 / Rega P3 > Luxman 505UX Mark II > Fyne Audio F502SPs > Synergistic Cables
Secondary - OPPO 93 > VAC CLA 1 MKII Pre > Odyssey Stratos > Dynaudio Audience 82s > Tara Labs Cables
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June 4, 2018, 10:36 PM #5
Re: Dual input to amplifier challenge
Signal on rhe ground is going to feed back up into the other gear.
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June 4, 2018, 11:59 PM #6
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Re: Dual input to amplifier challenge
You are correct, don't do that.
For a while I actually had two systems, both shared my main speakers. What I did was use bananas at the speakers for a quick switch back and forth, depending on what system I wanted to use.
Now if your power amp accepted both XLR and RCA, and had a switch to choose the input, you could use XLR from one preamp and RCA from the other.
Or, if your power amp is easy to get to the back just switch the cables back and forth. I have enough room to reach over my amp and don't need to see to switch cables so this would work for me.
My preamp has bypass but due to a ground issue I can't seem to eliminate I'm isung a regular input and doing what Shadowfax does, basically. The ground issue goes away when using XLR connection.
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June 5, 2018, 09:32 AM #7
Re: Dual input to amplifier challenge
You need an a /b box. I have used your splutter with guitar amps, it always seemed to flatten the signal. The a /b box allowed a choice with no drop in signal. You could make one for $20.
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AudioShark forum is a leading forum site for High End Audio Discussion, Stereo System Discussion, Home Theater System Discussion, Best Home Stereo System Discussion, Home Theater Installation Discussion etc.
The AudioShark forum was created for sharing the passion of high-end Audio. We have Audiophiles from all over the world participating and sharing their knowledge. From novice to experts, you will find a friendly environment for discussing about High End Audio, Stereo System, Home Theater System, Home Stereo System, Home Theater Installation, Amplifiers, Speakers, Subwoofers, Integrated System, Acoustic treatments & Digital Room Corrections and many more.
At AudioShark, we also have incorporated an exciting Marketplace where members can peruse terrific buys on used gear, as well as meet dealers and discuss the purchase of new gear.
We are as crazy about this hobby as you are! So come on in and join us! Audioshark.org the Friendliest Audio Forum!
Industry Participation Disclosure : The owner and administrator of Audioshark is the owner of Suncoast Audio LLC in Sarasota Florida. Suncoast Audio has a full brick and mortar presence in Sarasota with several great show rooms with many world class brands. More information can be found at http://www.suncoastaudio.com
Audioshark is a community of like minded individuals. Audioshark welcomes participation from all manufacturers and owners of all brands and products. It is our belief that online forums provide a community of like minded audiophiles and music lovers to encourage the growth of this wonderful hobby.
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