Match this sub with a Amplifier (CC)

[TrueBlueLS]

Originally posted by: Shockwave
Sufficient power? Ok, so now we're going to talk about sufficient power? What in the name of 9 Hells does that have to do with blowing a speaker. Overpowering is overpowering, be it from clipping or from a larger amp. So, if I put a 1000 watt amp on my 500 watt sub it'll be fine, but a 300 watt amp will blow it?
Man, I dunno how you do audio, but it aint like the rest of the world.
i will concede. Distortion does wear out speakers. Just as fast as any other audio signal. Not faster, not slower.

If you take a look at my first post (note that it is not edited in any way, shape, or form), it does say "sufficient power."

 

[Shockwave]

Yes, not having sufficient power will damage the sub.
Sooo...How? I dont get it? Not having sufficient power = not running the sub to its RMS (I'm guessing) = damage??
If you had worded it "Running a smaller amp into clipping will damage it" I would have agreed. But sufficient power is a whole different thing here.
So, do you mean sufficient power in that the speaker needs RMS, or sufficient power in that its bad to clip the amp?

 

[TrueBlueLS]

Well what would you rather have powering your sub?

A) Amp #1 rated at 300 RMS/500 Peak (don't know why I'm bother with peak because it's just plain BS to sell an amp) running at a 100% load to supply the power needed for the sub
B) Amp #2 rated a 600 RMS/1000 Peak (MTX 9 times out of 10 underrates the wattages on their amp) running at an 83% load to supply the power needed for the sub

 

[Shockwave]

Originally posted by: TrueBlueLS
Well what would you rather have powering your sub?

A) Amp #1 rated at 300 RMS/500 Peak (don't know why I'm bother with peak because it's just plain BS to sell an amp) running at a 100% load to supply the power needed for the sub
B) Amp #2 rated a 600 RMS/1000 Peak (MTX 9 times out of 10 underrates the wattages on their amp) running at an 83% load to supply the power needed for the sub

Hmmm, hard to say. Depends on brands (Are the amps the same?) Price (Is the more powerful 4 times mroe expensive?) and what speaker I'm using (Is it 100 watts RMS or 1500 watts RMS?)

*I* always go for more power. But I push my equipment hard and also have faith in my ability to set gains properly and know when I'm pushing it too hard so either would work fine for me.
That has little to do with a smaller amp damaging the sub however. Both will push a sub equally well, 1 just has more power. Neither will risk damage to a sub faster then the other in the hands of someone who knows a small amount about when their pushing something too hard.

 

[TrueBlueLS]

Well in the case of WHSLacrossekid, you would want to go with an amp that can push more wattage at a lesser load. The only thing that matters when buying an amp is it's ablility to produce a clean signal at the wattages you're going to use. Brand and price have nothing to do with it.

 

[Shockwave]

Brand and price has alot to do with it IMO. I'll take 300 ARC watts over 600 Kraco watts every time. Arc is more reliable, and rated more accurately, and probably has less THD at the rated power. And price? Hell, in that case maybe he should get a Sinfoni, Brac or McIntosh amp? Only runs from a little over a thousand up. 😀

I agree, if you *can* afford it always go bigger. I wont argue that point, I'm an advocate of too much power. But that doesnt mean less power will ruin a sub, and provided you use your ears and some common sense, it also means your just as safe using a smaller amp as a bigger one.

 

[isekii]

why not just go with a JBL 500.1 mono ?

 

[virtuamike]

Originally posted by: isekii
why not just go with a JBL 500.1 mono ?

I don't think JBL makes 500.1, 600.1 is the closest thing. Even then, that does 300Wx1@4ohms, we could do more power.

 

[glen]

It is almost always better to get more surface area than to get more power.

 

[jlee]

link

link

Contrary to popular belief, it is easier to damage speakers with an underpowered amplifier than an overpowered amplifier. Every amplifier has a point at which it runs out of power. At this point it wont get louder, instead the sound will harden up and distort - this noise is often referred to as "clipping" and is produced by the amplifier, not the speakers. However it is this "clipping" which most commonly damages speakers and leads to "blown" speaker drivers.

Another link

If your speakers are capable of handling significantly more than your amplifier can produce, driving them with a clipped signal will not likely hurt them.
If the speakers can handle 3 or 4 times the power that your amplifier can produce, there's virtually no way to damage your speakers (no matter how clipped the signal is).
If your speakers are rated for the same power handling as your amplifier is capable of producing cleanly, driving them with a clipped signal for extended periods of time may cause speaker damage and/or premature failure.
If your speakers are rated for the same power handling as your amplifier is capable of producing cleanly, driving them with a square wave signal for extended periods of time will likely cause speaker damage.

 

[glen]

Originally posted by: CadetLee
link

link

Contrary to popular belief, it is easier to damage speakers with an underpowered amplifier than an overpowered amplifier. Every amplifier has a point at which it runs out of power. At this point it wont get louder, instead the sound will harden up and distort - this noise is often referred to as "clipping" and is produced by the amplifier, not the speakers. However it is this "clipping" which most commonly damages speakers and leads to "blown" speaker drivers.

Another link

If your speakers are capable of handling significantly more than your amplifier can produce, driving them with a clipped signal will not likely hurt them.
If the speakers can handle 3 or 4 times the power that your amplifier can produce, there's virtually no way to damage your speakers (no matter how clipped the signal is).
If your speakers are rated for the same power handling as your amplifier is capable of producing cleanly, driving them with a clipped signal for extended periods of time may cause speaker damage and/or premature failure.
If your speakers are rated for the same power handling as your amplifier is capable of producing cleanly, driving them with a square wave signal for extended periods of time will likely cause speaker damage.

Yes. It is widely believed, but simpily not true.
Let me find something to the contrary from a widly recognized expert like David Hyre.

 

[glen]

I emailed Dan Wiggins instead of Dave Hyre.

 

[jlee]

Originally posted by: glen

Originally posted by: CadetLee
link

link

Contrary to popular belief, it is easier to damage speakers with an underpowered amplifier than an overpowered amplifier. Every amplifier has a point at which it runs out of power. At this point it wont get louder, instead the sound will harden up and distort - this noise is often referred to as "clipping" and is produced by the amplifier, not the speakers. However it is this "clipping" which most commonly damages speakers and leads to "blown" speaker drivers.

Another link

If your speakers are capable of handling significantly more than your amplifier can produce, driving them with a clipped signal will not likely hurt them.
If the speakers can handle 3 or 4 times the power that your amplifier can produce, there's virtually no way to damage your speakers (no matter how clipped the signal is).
If your speakers are rated for the same power handling as your amplifier is capable of producing cleanly, driving them with a clipped signal for extended periods of time may cause speaker damage and/or premature failure.
If your speakers are rated for the same power handling as your amplifier is capable of producing cleanly, driving them with a square wave signal for extended periods of time will likely cause speaker damage.

Yes. It is widely believed, but simpily not true.
Let me find something to the contrary from a widly recognized expert like David Hyre.

That's what I thought..so I posted two differing opinions..lol

 

[glen]

Here you go:

Probably because, if you're close in power, you can blow them up with THD...
Average power of a square wave is considerably higher than that of a sine
wave, given the power rails. This is really only an issue when you have
large power to start with, like 500W on a 700W driver.

With low power (say a 100W amp on a 500-600W rated driver), clipping isn't a
problem for a woofer. For a tweeter it can be a bad thing, but other than
that, it's just an old myth.

I guess I need to make a white paper dealing with this myth, too...🙂

Dan

-----Original Message-----
From: Glen ********
Sent: Monday, June 09, 2003 5:49 AM
To: dwiggins@adireaudio.com
Subject: myths


Why do folks think low power will blow speakers with mystical square waves?
Any articles on your web site about this?


Peace,
Glen ( proud owner of 4 tempests in an infinite baffle)
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