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Discussion Starter · #1 ·
Hi
Recently bought the Amphony 1800 wireless kit. It consists of a single transmitter with 2 receivers over 2.4 ghz. Transmitter input can be either from receiver speaker outputs or line level RCA. I'm using the RCA inputs. Output level is set at 50% as are the receiver volumes. They were then calibrated using YPAO on my RX-A3080 as surround back speakers. The speakers are Elac Debut 2.0 bookshelfs.

Here are the problems:
Units have no standby mode or power off. If I manually turn them off there is a loud pop which could damage my speakers. Design flaw?
There is a lot of noise. With every piece of electronics powered off including my router, they still have line noise and buzz. Closest thing is a tube guitar amp with the cable plugged in but not the guitar.

Any thoughts of what I can do? Experimented with basic Ferrite Chokes but I have no idea of what rating to use. Re-purposed them off old audio cables. What about PA noise gates? Have no access to the schematics but I'm sure nothing is shielded in these units. Their tech support hasn't been much help.

Thanks for any help.
 

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Discussion Starter · #3 ·
Been researching them tonight. Looks it would be in line between the AV receiver line out and the transmitter. Is the noise at the wireless receiver end or the transmitter? Just wondering because there is no way to connect it between the wireless receiver and the speaker. Isolators seem to only be line level and not for amped outputs. How have you configured yours? Thanks JetRanger.
 

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Discussion Starter · #10 ·
Installed the Ground Loop Isolator last night. Actually made the noise worse so I took it out. Very frustrating. The noise is like having a fly or mosquito constantly buzzing your ears. So I took out the RCA line level cable and used the speaker connections from the receiver. It seems quieter. I'll see after I rerun the YPAO. Should I be concerned that running the speaker outs into the transmitter will cause the receiver to work harder and run hotter? It bothers me that these run 24/7 and have no power off or standby modes. Pretty sure it will reduce the product lifespan.

Anybody have any ideas? Thanks for any help.
 

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Discussion Starter · #12 ·
Re-ran YPAO a few times with transmitter at 50% and receivers at full volume. Noise is still there. Have emailed their support wanting a resolution as it’s now been a month. Have asked for another transmitter and power supply. Any ideas on how to power off the receivers without popping the speakers?
 

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Discussion Starter · #14 ·
Yes and it made the noise worse which seemed to further verify the transmitter as the problem. I'll see what happens with their support. Problem is I need a 1 transmitter 2 receiver compliment as I can't run wires from a single receiver to separate speakers. Few options out there as most have 1 transmitter and 1 receiver.
 
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