[Hallicrafters] RE: Why is the R-42 speaker so expensive?

[Julian Bunn]

Yes Bob, you are absolutely correct about speakers in general, but I was
not speaking in general, I was talking specifically about the R-42. The R-42
is essentially an open box design.

Julian

Bob Young wrote:
> Cabinet design has a huge impact on the sound of a speaker. A bass 
> reflex cab is tuned somewhere at or above the resonant frequency of 
> the driver inside, they are much more efficient and have much better 
> bass response than an open back cab with the same driver. These cabs 
> take the back wave of the driver and put it in phase with the front 
> wave and release it through a port usually below the speaker in front 
> reinforcing the bass. Open back cabs cancel most of the lower bass 
> because the back and front waves are out of phase with each other, 
> ever listen to a driver that is not in a case, no bass at all due to 
> out of phase cancellation. The only draw back to a bass reflex speaker 
> is they drop off rapidly below the resonant frequency of the port. 
> Sealed speakers sound even better as their drop off is much more 
> gradual, but they are less efficient as they pretty much keep the back 
> wave right in the cab itself. Many different cab designs. I don't know 
> if this is anything to do with the price however.
>
> Bob
> KB1OKL
>
> Message: 4
> Date: Sat, 29 Sep 2007 18:42:17 -0700
> From: Julian Bunn <Julian.Bunn at caltech.edu>
> Subject: Re: [Hallicrafters] Why is the R-42 speaker so expensive?
> To: jeremy-ca <km1h at jeremy.mv.com>
> Cc: hallicrafters at mailman.qth.net
> Message-ID: <46FEFEF9.4020302 at caltech.edu>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> I think the sound is good simply by virtue of the size of the driver.
> The cabinet probably has
> minimal or no effect on the acoustics, IMHO.
>
> No idea why they are so expensive ... I picked mine up very reasonably
> from a chap who
> was selling an SX71 and it came with it.
>
> Julian
>
>
> ______________________________________________________________
> Hallicrafters mailing list
> Home: http://mailman.qth.net/mailman/listinfo/hallicrafters
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:Hallicrafters at mailman.qth.net
> ----
> List Administrator: Duane Fischer, W8DBF **for assistance**
> dfischer at usol.com
> ----
> HHI Halligan's Hallicrafters International and www.w9wze.net
>