Automatically Powering on Pro Amps via Relay (guide w/ pics) - Page 14 - AVS Forum | Home Theater Discussions And Reviews
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post #391 of 406 Old 07-29-2015, 07:57 PM
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http://www.avsforum.com/forum/155-di...1502832?page=1

A snubber protects the trigger. When the coil in the relay is de-energized, it sends Voltage back into the trigger possibly damaging it.

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post #392 of 406 Old 07-29-2015, 08:17 PM
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6000 pop

Quote:
Originally Posted by kingwiggi View Post
I have just build one of these for my iNuke NU6000dsp amp using the OMRON mechanical relay.

It works fine however when I turn my Processor off I get a very loud pop from the subs. The subs are 2 18" Ultimax's so the pop is pretty loud.

Is this the voltage spike mentioned earlier in the thread and will the snubber help prevent this.

The link for the snubber on page 1 is dead, does anyone have an updated link or part #

I'll go ahead and get a diode for the LV line to protect the AVR but I don't think that will help prevent the loud pop.
I have read the 6000 is notorious for popping and if you search here you will find a few good reads on how to fix this, as far as the 3000 I haven't had an issue with testing for pop on my 18 and now read this and need a snubber guess ill stop @ radio shack tomorrow to re do mine made from a Tripplite power strip.
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2-RTi-10's 1-CSi5 2-TSi400 6-r150's 1-Velodyne DPS-12(rebuilt power supply with new cap's and rectifier), 1-18-22 UM powered by Behringer 3000DSP
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post #393 of 406 Old 07-29-2015, 08:20 PM
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Another iNuke mod - internal 12v relay and DIY Trigger Expansion Module
Here try this out

2-RTi-10's 1-CSi5 2-TSi400 6-r150's 1-Velodyne DPS-12(rebuilt power supply with new cap's and rectifier), 1-18-22 UM powered by Behringer 3000DSP
Yamaha RX-A3030 and Emotiva XPA-200
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post #394 of 406 Old 07-29-2015, 08:21 PM
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Quote:
Originally Posted by kingwiggi View Post
I have just build one of these for my iNuke NU6000dsp amp using the OMRON mechanical relay.

It works fine however when I turn my Processor off I get a very loud pop from the subs. The subs are 2 18" Ultimax's so the pop is pretty loud.

Is this the voltage spike mentioned earlier in the thread and will the snubber help prevent this.

The link for the snubber on page 1 is dead, does anyone have an updated link or part #

I'll go ahead and get a diode for the LV line to protect the AVR but I don't think that will help prevent the loud pop.
This is the solution for the Inuke6000dsp amps:

Pro Amp Relay Box - NASTY power down thump
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post #395 of 406 Old 07-30-2015, 07:51 AM
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Quote:
Originally Posted by azz7686 View Post
Quote:
Originally Posted by bear123 View Post
This is the solution for the Inuke6000dsp amps:

Pro Amp Relay Box - NASTY power down thump
Thanks

Very much appreciate the links, just placed my order for that other relay.

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post #396 of 406 Old 07-30-2015, 08:45 AM
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I performed a similar mod for my QSC amp. However, I took advantage of my Furman power conditioner and turned the whole thing into a switched unit. So once my Denon (which is plugged into my other Furman that is powered on all the time) turns on, it sends out the 12v signal to the relay inside the second Furman to turn on. Works great. Here are a couple of pics. All I needed was the mono cable and jack, along with the relay. There was plenty of room inside the Furman to mount the relay.


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post #397 of 406 Old 07-30-2015, 12:35 PM
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Nice job, hey on a mechanical relay I need a snubber? So what exactly do I need to use? I have been trying to look it up and keep getting equations to figure out and I really don't want a headache today so any simple link or parts list would be great, its for a 12v relay in my tripplite power strip with the relay hooked to 1 plug already have it together with 12v trigger input but started reading about all this and now it seems I need a snubber so I don't want to fry my receiver or maybe I'll just get the trigger expander from Emotiva but didn't want to spend that much since I'm in this DIY mode!

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post #398 of 406 Old 07-30-2015, 04:18 PM
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Any 1N400x diode from RadioShack.
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post #399 of 406 Old 07-30-2015, 06:02 PM
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Quote:
Originally Posted by Mrkazador View Post
Any 1N400x diode from RadioShack.
I have a diode but from what I've read i need a 100 ohm resistor and .01 to .022 ceramic cap to?

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Yamaha RX-A3030 and Emotiva XPA-200
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post #400 of 406 Old Yesterday, 07:51 AM
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Quote:
Originally Posted by Mrkazador View Post
Any 1N400x diode from RadioShack.
You mean the store that's gone out of business?
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post #401 of 406 Old Yesterday, 08:18 AM
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Still have one here its joined up as a Sprint store!

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Yamaha RX-A3030 and Emotiva XPA-200
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post #402 of 406 Old Today, 11:06 AM
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Quote:
Originally Posted by azz7686 View Post
I have a diode but from what I've read i need a 100 ohm resistor and .01 to .022 ceramic cap to?
Bump!
Any input on this need to finish it up this weekend!

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post #403 of 406 Unread Today, 12:34 PM
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Quote:
Originally Posted by azz7686 View Post
Bump!
Any input on this need to finish it up this weekend!
Just buy one of these for $1!

http://www.farnell.com/datasheets/158100.pdf

What do you think you need the resistor/cap for?
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post #404 of 406 Unread Today, 01:14 PM
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Quote:
Originally Posted by Sam S View Post
Just buy one of these for $1!

http://www.farnell.com/datasheets/158100.pdf
A TVS (Transient Voltage Suppressor) would be a much better choice. I'm not entirely sure how a rectifying diode is going to help him.

Something like this: http://www.digikey.com/product-detai...ICT-ND/2880369

This one clamps a bit above 12V (14.3-15.8) so if you have a 12V supply that's not real tightly regulated it won't be clamping during normal operation.

I'm guessing the RC he mentions are for a snubber. I don't think that's necessary.
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post #405 of 406 Unread Today, 03:14 PM
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Quote:
Originally Posted by Stereodude View Post
A TVS (Transient Voltage Suppressor) would be a much better choice. I'm not entirely sure how a rectifying diode is going to help him.

Something like this: http://www.digikey.com/product-detai...ICT-ND/2880369

This one clamps a bit above 12V (14.3-15.8) so if you have a 12V supply that's not real tightly regulated it won't be clamping during normal operation.

I'm guessing the RC he mentions are for a snubber. I don't think that's necessary.
Well Thanks for this and yes its for a snubber that was mentioned, so don't use a diode and use this tvs? will do thanks a lot!

2-RTi-10's 1-CSi5 2-TSi400 6-r150's 1-Velodyne DPS-12(rebuilt power supply with new cap's and rectifier), 1-18-22 UM powered by Behringer 3000DSP
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post #406 of 406 Unread Today, 03:56 PM
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Quote:
Originally Posted by azz7686 View Post
Well Thanks for this and yes its for a snubber that was mentioned, so don't use a diode and use this tvs? will do thanks a lot!
Yes, the TVS will clamp the inductive spike from the relay when it opens. It is similar to a Zener diode. You simply put it across the terminals of the 12V coil of the relay, right at the relay.
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