>Joe Curry wrote:
>>
>> Julian,
>> I have two oval 8" dual coaxial speakers mounted on that removable panel
>>behind the
>> seats on my '63 Spit. The aftermarket panel is strong enough to support
>>the weight
>> of the panels with no noticable effect. The sound is adequate,
>>considering that
>> the Spit is noisy on its own and the speakers have to compete with the Monza
>> Exhaust system. However, It seems to be the only logical space to mount the
>> speakers and get proper separation.
>>
>> If it is a problem with sound bleeding out the back and around the
>>edges, you can
>> install covers behind the speakers to trap the sound. I would fabricate
>>them out
>> of some kind of heavy cardboard and line with foam rubber.
>>
>> BTW, I don't have the details of your Spit for the International
>>Spitfire database
>> I am compiling. Please provide the following.
>>
>> Year
>> Model
>> Color
>> Commission Number
>> Owner
>> Location (City, County, Country)
>>
>> Regards,
>> Joe Curry
>>
>> J.Daley wrote:
>>
>> > I've just got a new radio/cassette for my Spit 1500 and am trying to
>> > optimise the position of the speakers. At the moment I have 2 speakers
>> > in the rear panel behind the seats. This is not ideal, as far as I can
>> > see, for at least two reasons
>> >
>> > 1. The panel is very flimsy.
>> > 2. The panel is not well sealed so that sound from the rear of the
>> > speaker can leak round the edges.
>> >
>> > So from a theoretical point of view this setup should sound pretty bad,
>> > although it may be that if the leaks are small compared to the volume of
>> > the boot (of course the petrol tank is in the way) this problem is a
>> > small one. Has anyone got any practical experience ? Would reinforcing
>> > the panel with some plywood or something make much difference ?
>> >
>> > I'd also like to put a pair of speakers in the doors, but looking at
>> > it, it looks like there is very little room. Again, has anyone played
>> > around with door speakers ?
>> >
>> > I'm not looking for the ultimate in high fidelity, just something that
>> > doesn't sound too offensive.
>> >
>> > Julian.
>> >
>> > [Third attempt - Does majordomo reject mail if the From: field doesn't
>> > match a subscriber to the list ? I usually send mail from a different
>> > account to the place I read mail, so that may be the problem.]
>> >
>>__________________________________________________________________________
>>_____
>> > Julian Daley, Dept Phonetics, University College London
>> > _______________________________ j.daley@ucl.ac.uk
>>_____________________________
>>
>> --
>> "Thanks to the Interstate Highway System, it is now possible
>> to travel across the country coast to coast without seeing
>> anything." -- Charles Kuralt
>
>
>Depending on the size of the speakers (i.e., around 6 inches in diameter),
>mounting them
>on the rear side panels is not really a problem. Those cardboard pieces
>don't have a
>lot of strength, but enough for this purpose.
>
>As for fitting covers to the backs of the speakers, Joe, I believe this
>would only
>reduce their effiency. Speaker cones vibrate on two sides -- the front
>and the back.
>Enclosing the back is fine, as long as your create a port on the front
>mounting surface
>so as to relieve the back pressure -- i.e., "sound" -- coming from the
>backside of the
>speaker cone.
>
>More to the point -- it don't hardly make no damn difference when you
>driving with the
>top down, the tailpipe blaring, and the rattles rattlin'.
>
>--
>Martin Secrest
>74 Spitty
>73 GT6
Martin,
I hate to burst your bubble. There are actually two kinds of
enclosures. One is a sealed enclosure. This type performs better through
the entire range of sound, while a ported or vented enclosure allows a
speaker to perform better in the lower ranges. Did you ever notice on
decent speakers at the store, the three way speakers that have a tweeter,
midrange, and woofer will usually have a port, while the smaller two way
enclosures are usually sealed.(On the decent ones) The two way boxes have
a full range speaker as well as a tweeter to create the sounds in the
higher ranges.
Will
___________________________________________________________
Will O'Brien
OS Design & Consulting
email: hobrien@webos1.com
alt email: will@students.missouri.edu
___________________________________________________________
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