B&K 200.2, Yamaha RXV2500 12v Trigger

[gcmarshall]

so, my B&K 200.2 is still in a "trial" at my house. i have not yet passed final judgment on it, but seems good so far.

two questions - 1) when i power the amp up and down, there is a slight pop from my speakers. is that normal? is it a bad sign of anything? is there anyway i can reduce or eliminate this? i imagine it's just an electrical surge that gets picked up by the speakers, but just curious if i should pay more attention to this and/or take some action.

2) separately, i called both B&K and yamaha and asked if it would be OK to use my RXV2500's 12v trigger option to turn on my BK amp when the yamaha powers up. they both said to give it a try and if it works great, if not, then no harm will be done by trying.

is there any cause for concern for potential damage to either the yamaha or B&K by doing this or is the 12v trigger a "proven" technology? i just don't want to turn on my system one day and, for example, find out my yamaha was fried by trying to power up the B&K or something crazy like that. are these compatible components with respect to the 12v trigger.

 

[zumbo]

I use the 12v trigger with my Yam 1400 and Adcom 7605. All has been fine, until recently. For some reason, when I choose m/c in for dvd-a, the amp cuts off. I just added the m/c cables for dvd-a. Don't see why this has anything to do with it. But, as soon as I choose dvd-a option on my player and push play, my amp cuts off. If I unplug the trigger, amp works fine.

 

[bongobob]

Excuse my ignorance but exactly what do you mean by 12V trigger?

 

[jcPanny]

Amp power up.

In your receiver's spec sheet, look at the max output current for the Yamaha's 12V trigger. On the amp, check the input current required on the 12V trigger to turn it on. If the Receivers output >= Amp input then the trigger should work fine.

Another solution would be a power center that turns devices on in sequence such that the receiver is turned on a second or two before the amplifier.

 

[Bobster]

Yamaha 12v Trigger Issue

I've begun using the 12v "control out" connection on my HTR-5990 receiver to initialize my Monster HTR3500 which my Sunfire Cinema Grand amp is plugged into.

To make a long story short. this works great until I select "multi ch" on my receiver. At that time, the HTR3500 shuts down.

When multi channel is de-selected, the HTR3500 powers back up. I do have a universal player hooked up to the receiver.

So, based on earlier email in this thread, the Yamaha receivers seem to be triggering a power down when "multi ch" is selected.

 

[majorloser]

Excuse my ignorance but exactly what do you mean by 12V trigger?

Most pre/pros, some receivers, some DVD/CD players and most projectors have a 12V trigger output. What it does is supply a 12V source to trigger another device to activate. For a pre/pro or receiver it's used to turn on an amp. Most pre/pros have multiple trigger outputs to allow cascading amp power ups or for multiple zones. This helps prevent the "pop" and prevent power surges.

For a projector it is used to trigger a powered screen.

For a DVD/CD player it's used to sync a recording device (tape).

 

[zumbo]

I've begun using the 12v "control out" connection on my HTR-5990 receiver to initialize my Monster HTR3500 which my Sunfire Cinema Grand amp is plugged into.

To make a long story short. this works great until I select "multi ch" on my receiver. At that time, the HTR3500 shuts down.

When multi channel is de-selected, the HTR3500 powers back up. I do have a universal player hooked up to the receiver.

So, based on earlier email in this thread, the Yamaha receivers seem to be triggering a power down when "multi ch" is selected.

Boy, am I glad to hear I am not the only one. So, before I enjoy m/c music, I will unplug the trigger.

 

[bongobob]

Most pre/pros, some receivers, some DVD/CD players and most projectors have a 12V trigger output. What it does is supply a 12V source to trigger another device to activate. For a pre/pro or receiver it's used to turn on an amp. Most pre/pros have multiple trigger outputs to allow cascading amp power ups or for multiple zones. This helps prevent the "pop" and prevent power surges.

For a projector it is used to trigger a powered screen.

For a DVD/CD player it's used to sync a recording device (tape).

Thanks for the reply...I guess this would be the "control out" on the Yamaha. Looks like it takes a 3.5mm mono plug. Is this so?

 

[gcmarshall]

thanks for all the replies.

my yamaha 2500 says for the 12v trigger: "12v, 15mA max".

my B&K says it will work with 5-24 volts DC. so, from a volts standpoint it is compatible. however, the B&K does not specify a mA rating. is there any harm in trying this? i assume the worst case is that the yamaha may not be able to power up the B&K, but i don't want to risk damaging anything.

 

[majorloser]

thanks for all the replies.

my yamaha 2500 says for the 12v trigger: "12v, 15mA max".

my B&K says it will work with 5-24 volts DC. so, from a volts standpoint it is compatible. however, the B&K does not specify a mA rating. is there any harm in trying this? i assume the worst case is that the yamaha may not be able to power up the B&K, but i don't want to risk damaging anything.

The amp is only sensing power. You're not driving a load. It'll work fine.

I have a B&K Ref 31 and a Ref 7270 amp. The pre/pro goes through it's start up sequence than triggers the amp.

 

[majorloser]

Thanks for the reply...I guess this would be the "control out" on the Yamaha. Looks like it takes a 3.5mm mono plug. Is this so?

YES

Amps have "control out" and "control in" plugs. This allows you to daisy chain the trigger from one amp to another allowing multiple amps to start. As I stated above the amps are just sensing the voltage. There is no real power load on the receiver or pre/pre.

 

[bongobob]

Unfortunately my Adcom doen't have this feature. But it was FREE

 

[majorloser]

Unfortunately my Adcom doen't have this feature. But it was FREE

Not a problem! Just connect multiple amps with a wye connector.

 

[Bobster]

majorloser,

My Cinema Grand doesn't either have a trigger input either. It senses input on the left front channel (which doesn't always work so well).

That's one reason I'm using the power center. If you don't have one now, adding a triggered power filter, will give you a way to control your Adcom.

 

[bongobob]

What I'd like to do is have the Yamaha kick in the Adcom. This would be handy when using my Harmony remote. Because the Adcom has neither a trigger or standby mode I don't see how this is possible. From what I understand using the switched AC sockets on the Yam for the Adcom is not advisable. I figure since I listen to music mostly I still have to load a disc so I'm at the unit anyway to turn it on. It's remembering to turn the Adcom off thats a bit dicey. After a night of listening it'd be nice to have the remote power down everything. The free factor makes all inconvieinces acceptable of course....