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How is speaker size related to frequency response???

post #1 of 23
Thread Starter 
If headphones can produce frequencies just as low as a 12" subwoofer why would we ever buy a 12" sub?

I know in my lead guitar playing days if the amp I was using did not have a 12" speaker it didn't sound right to my ears so speaker size must affect the sound in some way.

Do we "feel" the sound more if we have larger speakers(is this the reason we buy 12" subs)?

Thanks,
Yeto
post #2 of 23
Quote:
Originally Posted by Yeto View Post

If headphones can produce frequencies just as low as a 12" subwoofer why would we ever buy a 12" sub?

I know in my lead guitar playing days if the amp I was using did not have a 12" speaker it didn't sound right to my ears so speaker size must affect the sound in some way.

Do we "feel" the sound more if we have larger speakers(is this the reason we buy 12" subs)?

Thanks,
Yeto

Will your headphones fill a room with low frequencies? That's the difference.
post #3 of 23
Is it really possible for headphones to go down as low as a subwoofer?
post #4 of 23
Headphones certainly won't make you and your body "feel" the bass.
post #5 of 23
Quote:
Originally Posted by Nuance View Post

Headphones certainly won't make you and your body "feel" the bass.

Some of those old Koss headphones that were as big as two Johnny Bench catcher's mitts could POUND your head with bass.
post #6 of 23
A whole bunch of people are saying, Johnny who?, oldtimer.
post #7 of 23
Quote:
Originally Posted by buzzy_ View Post

A whole bunch of people are saying, Johnny who?, oldtimer.

Ouch, you punk.
post #8 of 23
Thread Starter 
so speaker size equals "volume of sound"

is the answer to my question that simple?

Thanks,
Yeto
post #9 of 23
Quote:
Originally Posted by Yeto View Post

so speaker size equals "volume of sound"

is the answer to my question that simple?

Thanks,
Yeto

It would be like asking "how is car size related to horsepower". It depends.

Yes, a larger speaker should be able to put out more sound but that's simply because it can move more air. With speakers though you (hopefully) care more about the noise it puts out rather than how loud that noise is.

Sensitivity, frequency response, size, materials used, number of drivers, types of drivers, bracing in the enclosure, and a hell of a lot more attribute to how a speaker sounds. Also, your own personal preference comes into play.
post #10 of 23
Quote:
Originally Posted by Paul Scarpelli View Post

Some of those old Koss headphones that were as big as two Johnny Bench catcher's mitts could POUND your head with bass.

Your head, yes. Not the rest of you, though.
Johnny who?
post #11 of 23
I recently saw an ad for speakers that use a single 3" driver in a 3" X 37" tube, and claim 40Hz-20kHz +/-3dB. A dubious claim at best, but impressive if true.
post #12 of 23
Quote:
Originally Posted by PULLIAMM View Post

I recently saw an ad for speakers that use a single 3" driver in a 3" X 37" tube, and claim 40Hz-20kHz +/-3dB. A dubious claim at best, but impressive if true.

Were they Definitive Technology?

+/-3db is possible, but at what output level? As the speakers get loud, the distortion down low will increase and will begin to muddy the midrange too.
post #13 of 23
Quote:
Originally Posted by Nuance View Post

Headphones certainly won't make you and your body "feel" the bass.

Thats understood, but I have a hard time rationalizing a pair of headphones could dip down to say 25 Hz. If it is possible, that is impressive.
post #14 of 23
Quote:
Originally Posted by tonygeno View Post

Were they Definitive Technology?

No. They were called "Jazz", by a company called MasterSource. I briefly considered trying a pair, but I don't believe that their claim is possible (a quick calculation shows that they have less than half the cabinet volume and less than a third of the driver area of my tiny Mirage Omni 150s!)
post #15 of 23
a lot of speakers and headphones can go down to 25hz but not with any authority
no substitute for cubic inches except more of them.
post #16 of 23
Quote:
Originally Posted by oztech View Post

a lot of speakers and headphones can go down to 25hz but not with any authority
no substitute for cubic inches except more of them.

As my uncle used to say, nothing like piston area to produce loud and low.
post #17 of 23
Quote:
Originally Posted by tonygeno View Post

As my uncle used to say, nothing like piston area to produce loud and low.

True. But then you have the idiots who think big drivers are "slow".
post #18 of 23
Quote:


But then you have the idiots who think big drivers are "slow".

Ouch, thats not nice!
post #19 of 23
Quote:
Originally Posted by Tom Brennan View Post

True. But then you have the idiots who think big drivers are "slow".

They're not idiots! They just haven't talked to Keith Yates for three hours about it.

Yes, there is no such thing as a *fast* subwoofer.
post #20 of 23
This thread shouldn't be titled "How is speaker size related to frequency response," but, rather "How is speaker *size* related to bass extension?" A 1" dome tweeter may play 8 kHz louder than a 1.5" dome tweeter. A 2-way speaker may play louder than a 4-way with a 15" woofer. It probably won't have as much bass extension, though.

Also, bass is about moving air, and cone diameter alone isn't the whole story. There is also power handling, excursion, and the most important variable of all...marketing.
post #21 of 23
Quote:
Originally Posted by Paul Scarpelli View Post

There is also power handling, excursion, and the most important variable of all...marketing.

I hear Bose makes a killer brand of kool-aid. People drink that stuff like water!
post #22 of 23
Well, if they were fast Tom, they'd be tweeters
post #23 of 23
One can't blame people for thinking that a large woofer in and of itself will go deeper than a smaller one, even though it very well may not.

As many here know that larger woofer must be in a correspondingly larger box than a small woofer to go deeper, Hoffman's Iron Law and all that.

For instance my Altec Nineteens use a 15" woofer and are very efficient, 98db, and go fairly deep, f3 around 35hz, the penalty being a box of about 13 cubic feet.

No free lunch.
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