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Post by jonstatt on Mar 18, 2020 14:03:16 GMT -5
I have an RMC-1L and verified the voltage output of the triggers are 12V. But as soon as I connect them to the Bryston trigger inputs the voltage collapses to 2V and the amplifier doesnt switch on. Bryston state the current draw is minimal but clearly it's more than the Emotiva can handle. Any suggestions for devices that can regenerate a trigger output with better current stability. Also are these circuits protected on the RMC-1 as I would hate to damage anything?
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Post by SteveH on Mar 18, 2020 15:20:21 GMT -5
Any suggestions for devices that can regenerate a trigger output with better current stability. Also are these circuits protected on the RMC-1 as I would hate to damage anything? I use the Emotiva ET-3 as a repeater in my system which is triggered by an RMC-1. The specs say the ET-3 outputs 12VDC with a total current of 150ma. When I put a voltmeter on the ET-3 the output voltage of mine is 10.8VDC and it works fine. |
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Post by ttocs on Mar 18, 2020 16:10:19 GMT -5
I have an RMC-1L and verified the voltage output of the triggers are 12V. But as soon as I connect them to the Bryston trigger inputs the voltage collapses to 2V and the amplifier doesnt switch on. Bryston state the current draw is minimal but clearly it's more than the Emotiva can handle. Please measure the Resistance of your two conductor trigger cable, Ring to Ring, and Tip to Tip, and report your findings. This is the first step to ruling out a cable issue. Some cables have a resistor built-in and are actually for audio use, but they can look identical. It's a buyer beware situation with which I have personal experience. And yes, I know that these cables "can" work because in my situation the cable did indeed function, but due to built-in resistance to attenuate an audio signal (and thus - voltage) the area where the resistor was got warm, and the package was not marked as being an attenuated cable. edit: With end of one trigger cable plugged into Trigger-2, and the other end loose, I measure 12.11 VDC. Same cable plugged into Krell amp, the voltage drops to 6.84 VDC. When I add a second trigger cable into Trigger-3 or Trigger-4 and the other end plugged into Panamax M-5400PM the voltage does not drop at all, it remains the same at Trigger-2. edit2: I just looked up the manual for one of Bryston's top amps. The trigger needs minimum of 5 Volts and only uses 2ma for the control. For the voltage to drop to 2 Volts means to me that something else is going on. So if your trigger cable is minimal resistance, mine are less than 0.6 Ohms, then try each of the triggers individually on the RMC-1L to see if there is any variety of outcomes. One last thing, cable length matters. Long cables need to factor-in voltage drop. |
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Post by jonstatt on Mar 18, 2020 17:37:28 GMT -5
I have an RMC-1L and verified the voltage output of the triggers are 12V. But as soon as I connect them to the Bryston trigger inputs the voltage collapses to 2V and the amplifier doesnt switch on. Bryston state the current draw is minimal but clearly it's more than the Emotiva can handle. Please measure the Resistance of your two conductor trigger cable, Ring to Ring, and Tip to Tip, and report your findings. This is the first step to ruling out a cable issue. Some cables have a resistor built-in and are actually for audio use, but they can look identical. It's a buyer beware situation with which I have personal experience. And yes, I know that these cables "can" work because in my situation the cable did indeed function, but due to built-in resistance to attenuate an audio signal (and thus - voltage) the area where the resistor was got warm, and the package was not marked as being an attenuated cable. edit: With end of one trigger cable plugged into Trigger-2, and the other end loose, I measure 12.11 VDC. Same cable plugged into Krell amp, the voltage drops to 6.84 VDC. When I add a second trigger cable into Trigger-3 or Trigger-4 and the other end plugged into Panamax M-5400PM the voltage does not drop at all, it remains the same at Trigger-2. edit2: I just looked up the manual for one of Bryston's top amps. The trigger needs minimum of 5 Volts and only uses 2ma for the control. For the voltage to drop to 2 Volts means to me that something else is going on. So if your trigger cable is minimal resistance, mine are less than 0.6 Ohms, then try each of the triggers individually on the RMC-1L to see if there is any variety of outcomes. One last thing, cable length matters. Long cables need to factor-in voltage drop. Actually the Bryston amps I have use bare wire terminals. So I have a mono 3.5mm Jack to 2 screw terminal adapter. There is no resistor. But I went through the manual more carefully and found it says 33mA while in standby state and 16mA while on. You don't happen to know what the Krell draws do you? The fact it drops to 6.8V for you implies a very limited current draw capability. I did try triggers 1 and 3 and the both behave the same. |
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Post by ttocs on Mar 18, 2020 18:04:03 GMT -5
Actually the Bryston amps I have use bare wire terminals. So I have a mono 3.5mm Jack to 2 screw terminal adapter. There is no resistor. But I went through the manual more carefully and found it says 33mA while in standby state and 16mA while on. You don't happen to know what the Krell draws do you? The fact it drops to 6.8V for you implies a very limited current draw capability. I did try triggers 1 and 3 and the both behave the same. The trigger on my Krell states 30ma maximum on the back panel. I did a quick measurement and found that the Krell uses 5ma. What model Bryston do you have? For diagnosing purposes you're just using the one trigger cable for now, correct? And how long is it? |
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Post by jonstatt on Mar 18, 2020 18:13:18 GMT -5
Actually the Bryston amps I have use bare wire terminals. So I have a mono 3.5mm Jack to 2 screw terminal adapter. There is no resistor. But I went through the manual more carefully and found it says 33mA while in standby state and 16mA while on. You don't happen to know what the Krell draws do you? The fact it drops to 6.8V for you implies a very limited current draw capability. I did try triggers 1 and 3 and the both behave the same. The trigger on my Krell states 30ma maximum on the back panel. I did a quick measurement and found that the Krell uses 5ma. What model Bryston do you have? For diagnosing purposes you're just using the one trigger cable for now, correct? And how long is it? Bryston 5B-ST is the one I have been setting up so far. The cable is 2 foot long. And yes, just the one cable. |
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Post by ttocs on Mar 18, 2020 19:04:43 GMT -5
The trigger on my Krell states 30ma maximum on the back panel. I did a quick measurement and found that the Krell uses 5ma. What model Bryston do you have? For diagnosing purposes you're just using the one trigger cable for now, correct? And how long is it? Bryston 5B-ST is the one I have been setting up so far. The cable is 2 foot long. And yes, just the one cable. This is a long shot, but, try setting the Selector for the Trigger on the back of your amp to any other setting. Try 0, then 1, etc. This is the Soft Start function. Might make a difference, dunno. Worth a shot. Otherwise, I can't see any reason for the extra current draw. But something is pulling the voltage down, and it might simply be a dirty contact. |
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Post by jonstatt on Mar 20, 2020 15:18:48 GMT -5
Bryston 5B-ST is the one I have been setting up so far. The cable is 2 foot long. And yes, just the one cable. This is a long shot, but, try setting the Selector for the Trigger on the back of your amp to any other setting. Try 0, then 1, etc. This is the Soft Start function. Might make a difference, dunno. Worth a shot. Otherwise, I can't see any reason for the extra current draw. But something is pulling the voltage down, and it might simply be a dirty contact. No luck but I validated that the trigger works fine with Emotiva's own amps. In the meantime I put the Bryston amps on a current sensing power strip. It means I have to set the RMC-1L to energy saving mode so the power draw change is enough to trigger the power strip. I will also check out the ET-3 |
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ted29
Minor Hero
Posts: 13
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Post by ted29 on Mar 21, 2020 7:26:14 GMT -5
Hi,
I have exactly the same problem, the RMC1L trigger works good with the XPA, but not with my subwoofer triggers whose worked well on my Marantz AVR
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