What pushes more air...?

[alexclaber]

Read this:

Barefaced Bass - Volume displacement - it's (almost) all about moving air

I'd like manufacturers to replace their usual speaker configuration and power centric naming/marketing approach with one that's focused on volume displacement. It's a simple number in cubic centimetres and is so much more useful than all the other stuff when you play bass.

 

[alexclaber]

A fan speaker has been done!

http://www.eminent-tech.com/RWbrochure.htm

 

[makohund]

I think that would be just one big, continuous OOOOOHHHHMMMMMMMMMMMMMMMMMMMMMM.

 

[JimmyM]

Read this:

Barefaced Bass - Volume displacement - it's (almost) all about moving air

I'd like manufacturers to replace their usual speaker configuration and power centric naming/marketing approach with one that's focused on volume displacement. It's a simple number in cubic centimetres and is so much more useful than all the other stuff when you play bass.

You have no idea how much I agree!

 

[Ric5]

This moves more air.

 

[billfitzmaurice]

This is the only info I could find so far on these cabinets. Doesn't say much about the speakers.

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Read my post?

 

[Papa Dangerous]

Refried beans, and a chili dog taco

 

[shirtforbrains]

Noting beats a 4 ohm 4x10. Also its easier to move............

 

[billfitzmaurice]

Noting beats a 4 ohm 4x10. Also its easier to move............

Well, at least your moniker is correct, though you're spelling, not so much.

 

[GrowlerBox]

Well, at least your moniker is correct, though you're spelling, not so much.

Hang on to those stones, Mr Glasshouse .

 

[makohund]

Lol...

I thought he was saying having nothing would be better than having a 4x10, and lighter. Much lighter.

I wasn't gonna argue with that.

 

[DLESSING]

+1, factor in each driver's excursion and you'll get the volume displacement of air, gotta look at all three dimensions when talking about pushing air.

I get that. But can you explain the apparent overlap between the excursion of the cone in terms of volume displacement and the amplitude of the sine wave for loudness. Or is volume (amount of air moved) the same as volume (sound pressure)?

 

[thejumpcat]

Well, at least your moniker is correct, though you're spelling, not so much.

"You're" spelling's not so hot either.

 

[xk49w]

It's not always about numbers of drivers. There is the acoustic impedance transformation to consider. In the 80s (?) I saw a Johnny Winter show - post Floyd Radford anyway. It was a large venue but Johnny's FOH bass driver system consisted of only two (L/R) full sized low-frequency horns, 20+ feet long, maybe 12-15 feet in diameter at the mouth and each with one driver. They pushed the air just fine.

 

[PhiDeck]

Those intent on calculating the area of a driver may want to note that the rated size of a driver is the (approximate) overall diameter, only a subset of which moves air.

 

[miholc]

Dump them both and get a huge industrial fan...

[Invalid or Expired Link Removed]

If I pair this with tube head will it sound good? (I play metal.)

 

[Sneakypete]

A really good word to learn - NOMINAL.
In the real world, despite even the most detailed written specifications, almost everything - from the voltage/current coming from the wall socket to the variations in air pressure appearing in your ear canals can only be calculated NOMINALLY and often only very nominally. I'm just as nerdy about specs/dimensions/ratings blah, blah, blah as any other TB'er but, for me, factors like price, portability and stage/storage footprint are just as important as TS parameters. I changed cars eight months ago when the old one blew up and snapped up an elderly but immaculate Audi A4. A lovely car but guess what? My 1x15 and 2x10 are an inch too wide (nominally!) to squeeze into the boot/trunk and have to go on the back seat instead. Doh!

 

[thejumpcat]

I hear ya. When I bought my Mercury Milan in '07, I took my upright bass into the dealer's showroom to make sure it would fit through the vehicle's trunk.

 

[seamonkey]

Crap. Speakers aren't flat. Gah.

*goes back to Google*

It doesn't matter. Cone or flat - same calculation for setting up a pressure wave on a column of air. flat cross sectional area, and how far it can move are what matters.

Dispersion for sound is another topic.

 

[seamonkey]

Read this:

Barefaced Bass - Volume displacement - it's (almost) all about moving air

I'd like manufacturers to replace their usual speaker configuration and power centric naming/marketing approach with one that's focused on volume displacement. It's a simple number in cubic centimetres and is so much more useful than all the other stuff when you play bass.

Manufacturers should measure cabinets with a SPL meter across fequencies, from 1w up through burnout. Better them than the consumer.

You'd see that after so much power goes in the bass just doesn't get any louder.

At least they should do MAX SPL and power needed to reach MAX SPL.

And of course include polar charts for dispersion.