Bluesound Node - 12 trigger limitation
Answered
Dear Bluesound Support Crew,
Bluesound Node sends a single pulse to 12v trigger-out connector to toggle connected device ON/Standby. However many amps still require, not single pulse, but continuous current flow (e.g. 50mA) on the 12v trigger-in to keep the amp ON; when the 12v/50mA (or 5v/50mA) is gone, the amps goes back to Standby.
While Bluesound Node works perfectly fine with my Mark Levinson No.535 (single pulse 12v toggling), it can only turn on my Mark Levinson No.331, for one literal second (when the 5v or 12v signal is present).
With current hardware, is it possible to provide both options (i.e. continuous n single-pulsed) via a firmware update?
This will definitely wider your product supporting range as many many amps are still using continuous signals rather than single-pulsed when daisy-chain devices via 12v triggers.
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Official comment
Hi Polo
Bluesound players follow the industry standard when using the 12v trigger. Please contact your 3rd party manufacturer about a possible fault or update. Thanks for understanding.
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:-(
Not the response I was hoping for. Agree with initial comment.0 -
Why do we get these obscure answers like follow the industry standard, what is that supposed to mean? This is a user forum, not a forum for the hifi equipment industry.
While Polo Wang notes his Node generates a pulse trigger, I measure a continuous trigger on my Node 2i.
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Hi Gerben
It means after 15 minutes, a 12v trigger will send a signal to indicate the third-party device, following that same industry standard has turned off.
Based on the OP's question, I would suspect his third-party device has a fault or a short.
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Point Gris is right, sorry I messed it up. Node sends continuous 12v while my Mark Levinson No.331 expects momentary pulse (3-12v greater than 100ms); and my Mark Levinson No.535H adopts to newer standard that takes sustained 12v signal.
The point is, the 12v trigger industrial standard changed over time; old standard expects pulse, new standard expects sustained voltage. And it’s very common to have a modern digital streamer as the music source to an old, vintage audio system that its standard was still in the old era. Those vintage systems are usually expensive and won’t be replaced for years. For example, my Mark Levinson 331 works fine with my Sonic Frontier SFCD-1 and Line 1 by 12v triggers in a daisy-chain, which both player and preamp were from the same era as 331. From 331 outputs to my Sonus Faber speakers. Currently Node 2’s trigger out cannot turn on/off my amp. I had setup corresponding Alexa skill and routines, this is the only showstopper that blocks me from voice commanding my Node 2 to play music without walking to the amp and manually turning it on (and off). I should not be the only one suffering from it. I had to hack it with a delay/relay circuit board from RadioShack to send 12v pulse (~200ms) when receiving 12v voltage (trig-in) and another pulse when the sustained voltage drops. I just wonder if a firmware update can make it switchable between sustained voltage and momentary pulse.
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I hate these answers that do not really answer the questions.
"We follow the industry standard" actually should be read as'If it doesn't work it's the other brand's fault. Stating what voltage is put out and what max. current is permissable would give technicians like myself a clue what is possible instead of being sent into the woods without a map.
My experience is that active loudspeakers that need constant voltage work fine on a Node so it seems the 'pulse' answer is moot, I do not know however whether I can use it to power a relay to power up an amplifier.
So I'll have to find that out at the expense of the customer while a to-the-point answer would preventany 'roadblocks'that might show up while adding a Node to an existing setup, eh?
Just my two cents.The same goes for other brands as Sony because it is possible to use their screens as center channel with third party Center-signal but Sony is very unclear on how to properly activate this input other than'using Sony surround equipment'.
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