Re: Revealed: Re: Audio Shootout - Aluminum vs. Paper Cones


"Les Cargill" <lcargill@xxxxxxxxxx> wrote in message
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Mike Rieves wrote:

"Brian Running" <brunning@xxxxxxxxxxxxxxxxx> wrote in message
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Like other have said , the design of of the box plays a bigger role
than the driver itself.

It plays a big role, but a well-designed box won't make a bad driver
sound good. The driver is the fundamental part, and it's the most
important part.

Can't make a silk purse from a sow's ear.


There are bad speakers out there, but there's also a huge range in specs
of good drivers. Assuming that the driver is decent, the cabinet has
just as much to do with bass response as the driver does, if not more.
The enclosure must be carefully matched to the speaker, there is no
one-size-fits-all when it comes to enclosures. The best driver in the
world won't sound good if it isn't in a properly matched enclosure.

If people are interested in digging a little deeper, the
sofwtare package WinISD helps a lot.

http://www.linearteam.dk/default.aspx?pageid=winisd

To use it, you'll need the Thiele-Small parameters for a given
driver ( Carvin publishes the TS params of thier
drivers on their website, and makes good raw drivers of
you're thinking of building ).

If you can get the TS params for the driver used in a given
cabinet, you can verify the design of a cabinet you're thinking
of buying. *Many* commercially available designs simply aren't
any good, especially of 4X10 and 2X10 cabs. 1X15 and 2X12 tend
to be better.

--
Les Cargill

Many, if not most bass guitar cabs aren't designed for optimum flat
response in the bottom end, they're designed to emphasize the range that a
bass guitar produces. This lets them work more efficiently in that range,
requiring less EQ boost and less amp power for a given output level.
Designing for compact cabinet size, max efficiency, max output capability ,
and best low end response require compromises, any advantage in one area
requires sacrifices in the other areas. Speaker cabnet makers must choose
the combination that they think is most important to those who will be
buying and using the cabinet.
There are quite a few programs available, some free, that will give
reasonably accurate bass response curves if you know the Theile-Small
parameters of the speaker, cabinet volume and port area and depth, but
unfortunately, they will only predict what the speaker/enclosure combination
will do in the bottom two or three octaves, the response above that will
depend on many other factors.
Using software like this will allow you to eliminate some cabinets, but
the only way to really tell if a given enclosure will do what you want it to
is to try it out with your bass guitar and amp.


.

Relevant Pages

  • Re: Regarding DIY Cabs
    ... I can make assumptions based upon the driver manufacturer's published response curves and upon the response predicted by a program like WinISD. ... There's plenty of evidence, you simply choose to ignore it. ... Every manufacturer of quality speaker systems, whether they're for home hi-fi or touring PAs, understands the importance of minimizing cabinet resonances. ...
    (alt.guitar.bass)
  • Re: How are drivers QCd?
    ... I was fortunate to visit the JBL facilities in and around Los ... the cabinet is ready for finishing. ... "reference" driver stored in the other channel. ... used is the first driver off the production line that day. ...
    (rec.audio.tech)
  • Re: recommendations for 15" driver for bass?
    ... >> guitarist brought along some ancient Sunn 1x15" speaker cabinet for me ... (Or by my bass playing?) ... >> Flite Sound 115 is enroute, so I need drivers for those also. ... >> guarantees that driver would sound as good in all these other cabinets ...
    (rec.music.makers.bass)
  • Re: Revealed: Re: Audio Shootout - Aluminum vs. Paper Cones
    ... but a well-designed box won't make a bad driver ... Assuming that the driver is decent, the cabinet has ... just as much to do with bass response as the driver does, ... world won't sound good if it isn't in a properly matched enclosure. ...
    (alt.guitar.bass)
  • Re: Revealed: Re: Audio Shootout - Aluminum vs. Paper Cones
    ... Suppose for a "larger than optimum cabinet" we choose a tube ... Assuming the driver is somehow not resonant, ... Moving a coil in a magnetic field ...
    (alt.guitar.bass)