big_wasa
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| posted on 4/7/10 at 09:52 PM |
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Any one local got a sound meter ?
Any one local to spalding got a sound meter. And would like to pop around with it ? Please.......
I would love to know the db level of mine in prep for Iva.
cheers
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BenB
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| posted on 4/7/10 at 09:53 PM |
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Don't bother. Cheap (uncalibrated) sound meters are only good for relative tests (ie before and after an exhaust change). "Proper"
dB meters are rather expensive and out of the scope of most people on this list!
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big_wasa
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| posted on 4/7/10 at 10:01 PM |
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Oh well just an idea.....
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MakeEverything
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| posted on 4/7/10 at 10:03 PM |
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I disagree.
You can take the ambient noise, then deduct that from the exhaust noise at the regulation distance / angle.
Although not calibrated, they do offer a guide within (Normally) about 5-10% tolerance.
Incidentally, ive got one, but you can get an "Environment Meter" with one on for about £10 from your local electrical wholesalers.
Kindest Regards,
Richard.
...You can make it foolProof, but youll never make it Idiot Proof!...
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norfolkluego
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| posted on 4/7/10 at 10:53 PM |
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I've got a Maplins one I'm happy to shove in the post for you. Personally I don't think it's any good, after the engine change
we tested it at 106dB. The first time we sprinted it after that it was noise tested at 95dB!!! Some of that is probably down me not testing properly
but not all of it
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Dan.
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| posted on 5/7/10 at 12:59 AM |
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I have one unfortunatly It will only read 120dB-180dB a little loud for your exhaust i would hope!
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bowood14
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| posted on 5/7/10 at 04:32 AM |
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I work as a noise tech for Environmental Health. We have a cheap maplins £20 DB meter and checked against our expensive calibrated equipment and it
is very accurate. You need to check the spec of what angle and distance the test would be at though. Sorry to far away to be any help
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Agriv8
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| posted on 5/7/10 at 06:24 AM |
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My maplin one was +3 Db out when tested next to Mr Vosa's calibrated one.
regards
Agriv8
Taller than your average Guy !
Management is like a tree of monkeys. - Those at the top look down and see a tree full of smiling faces. BUT Those at the bottom look up and see a
tree full of a*seholes .............
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BenB
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| posted on 5/7/10 at 07:20 AM |
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Okay, so if you don't mind if you're up to 10% out then it's okay 
but seeing as it's a log curve that's a lot!
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HappyFather
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| posted on 5/7/10 at 07:43 AM |
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If you have a Windows Mobile phone or an iPhone, you can download a sound meter application that will give an (inaccurate) dbA measurement for free.
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907
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| posted on 5/7/10 at 07:56 AM |
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I bought mine from Maplins a while ago (£50, AZ8928) and having tested cars straight out of SVA found it to be within 1db.
I see that a similar meter that they sell is now £60 although they also sell one for £19.99.
Depends what people call a cheap one I suppose.
Paul G
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tony-devon
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| posted on 5/7/10 at 09:50 AM |
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all well and good this talk of only 1 or 2db out, but Im sure that from my distant past I remember something about an increase of 3db actually
representing a doubling in volume?
if thats correct then thats a hell of a lot out LOL
heavy is good, heavy is reliable, and if it breaks, hit them with it
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bimbleuk
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| posted on 5/7/10 at 10:05 AM |
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I'm near to Castle Combe so I've driven my car there when there's been a track day on. I asked them to test mine then checked this
against my Maplin meter (not a cheap £10 one).
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