Re: How does one add a 12v trigger to an amplifier...?

O.K. Point made and taken on the importance of posting accurate
information. I apologize for my uppityness. I did read the watt
ratings off the amp speaker outputs but, I now realize, that doesn't
mean the info is technically accurate. Anyway the power amplifier that
I wish to power on via the 12v trigger is a Mackie FR2600 high current
power amplifier. The preamp that has the 12v trigger is a Krell KAV
preamp. I'll double check the exact model number and find the specs on
what current the 12v trigger can provide and post that information.
Again, apologieson my lackof specificness.


ehsjr wrote:
bakin wrote:
Rich Grise wrote:

On Tue, 19 Dec 2006 00:18:45 +0000, ehsjr wrote:

bakin wrote:

Thanks for the response. It is a power amplifier used for audio
aplications. It draws ac line power at 120 volts plugged into a 20 amp
circut via a NEMA 5-20P plug. It powers on and off with a panel-mount
type, illuminated, rocker switch.

Neat trick. You have a 2600 watt amplifier that
uses only 2400 watts maximum input.

Those are audiophool watts, or "Peak Intermittent Modulated Power", i.e.
PIMP. ;-P

Cheers!
Rich


Yes, those are indeed "PIMP" watts. The wattage the manufacturer rates
the amplifier. I know that a device on a 20 amp circuit drawing a
maximum of 120 volts will not output more than 2400 watts.

But *we* have no idea of what you know. And sometimes what
someone knows, or thinks he knows, is not quite correct:
A device does not draw volts. Nor will a properly manufactured
UL listed 120 volt device draw 20 amps from a 20 amp circuit,
unless it is defective or modified in violation of the National
Electrical Code. The code requires that no single device draw
more than 80% of the branch circuit rating. So the correct
maximum figure is 1920 watts, not 2400.


I realize
I'm a noobie and not as knowledgeable as other posters here in this
group-that's why I've posted here. In an attempt to improve my
knowledge and learn how to (hopefully) do specific things regarding
electronics.

Great. That is why I posted the information in the paragraph
above.

I try to be as accurate and detailed in my question
posting.

Great.

It seems counter-productive and extranious to post "You need
to re-check the wattage figure for your amp, and post the correct
value."

Ok. That is your opinion. Perhaps some day you
will wish to answer someone's request where you
want accurate information to do so. You will then
understand that it is neither counter-productive
nor extraneous to tell the person seeking the
solution to re-check and provide accurate value(s).

In stead of deducing that, since the amplifier is for audio
applications, the wattage I posted is manufacturers' rating or "PIMP"

I could just as easily deduce that you made a typo or
mis-read the wattage rating. This (next sentence) is
not an attack on you, just an observation. You were
careless in your post: you did not take sufficient care
when you posted to provide us with either the manufacturer
name or the model of your power amp, nor did you take
sufficient care to post the manufacturer name or model
number of your av amp. With that evidence of careless
posting, it is certainly not unreasonable to think there
may have been a typo or a mis-read or some other error
in your posting of the 2600 watt figure.

(see above) wattage you could offer a solution to my original question

That is accurate, I could offer a guesswork solution.


along with a suggestion for me to post the amplifier's true wattage so

Which is precisely what I did.

one could more accurately discern what the proper hardware would be
for such a trigger imput device.

Post the brand/model numbers of the units you have,
plus any details in the instruction manuals that refer
to using the av to turn on another unit. You mentioned
the av 12 volt trigger - specs on what current it
can provide are needed. If there are web sites with
information on your equipment, post the url(s).

Ed

Thanks to all who offer some useful
information regarding my question.


.

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