-------------------- "Those who give up liberty for the sake of security deserve neither liberty nor security" - Benjamin Franklin
DiRtY SoUtH DEAF SqUaD
Elemental Designs
To cheat is to admit defeat
--------------------------------- Loud...it's when you can see the ground move, it's when you have to force yourself to breath, it's when the rest of the world ceases to exist. Posts: 4136 | From: Lafayette, LA | Registered: Sep 1999
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posted
You have to bear in mind that most music is composed of silence and then music and then silence.
So long as the sub isn't moving MUCH (IE silence) your amplifier will see at or near the DC resistance. What this means is that your amp will see the DC resistance not once, but many times, in a given musical passage.
If the average resistance falls under what I would term the "duty cycle" of the amplifier, then it won't shut off.
You couldn't have surety simply because all music is different.
ShadowStar
-------------------- You can't build a reputation for what you're GOING to do.. But you can build one for TALKING about it!
It's all about knowledge, love and respect.
Posts: 2578 | From: Somewhere In the Northeast | Registered: May 1999
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posted
thanks! that's the kind of answer i was looking for...didn't think about the dynamics of music...DUH!
thanks again!
-------------------- "Those who give up liberty for the sake of security deserve neither liberty nor security" - Benjamin Franklin
DiRtY SoUtH DEAF SqUaD
Elemental Designs
To cheat is to admit defeat
--------------------------------- Loud...it's when you can see the ground move, it's when you have to force yourself to breath, it's when the rest of the world ceases to exist.
posted
I see what you guys are getting at, and I think it depends on the protection circuitry. Whether you blow the Fets or BJTs is a temperature thing (if it’s built right). The temperatures not gonna go up immediately.
I've been thinking about bugging RC to post how long amps can put out their rated power into a resistive load. I bet it’s not long. At least you would know what amps heat up and which ones don’t. I personally consider that pretty important.
To answer your question Alaska, Yes, I'll bet your amp will handle it, It will heat up more or possibly shut off and do so quicker if it already over heats as is.
Posts: 1259 | From: Fullerton. CA ,USA | Registered: Oct 1999
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posted
Dank- I think the power output into the resistive load would be a direct function of temperature, if the protection circuitry is thermal, right?
Therefore, the overall current output ability of the OPS would yield the heat generated per watt output (by dividing the current output by the number of packages), then you would have to factor in the package, device type and duty cycle to ascertain the length of resistive load, right?
That question has too many variables.
ShadowStar
-------------------- You can't build a reputation for what you're GOING to do.. But you can build one for TALKING about it!
It's all about knowledge, love and respect.
Posts: 2578 | From: Somewhere In the Northeast | Registered: May 1999
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