Posted by Mike.e [ 203.97.2.242 ] on December 31, 2003 at 20:56:08:
In Reply to: Re: Horn throat+SPL meter arrived. Measuring methods? posted by Wayne Parham on December 31, 2003 at 15:27:06:
Hi wayne
I used sinewaves,but they are 5seconds long with no pause to let u switch range! i didnt realise it took so long to read display,change it if need be and write it down before the next tone :P
125db at the horn mouth like this^^
Sine-
horn in corner as usual as per picture
Listening position at computer,approximately 4.5metres away-measured by measuring my FOOT then counting my 'feet' in a row LOL ,my tapemeasure is too short ,and cant find it anyway.
Thin walls,rattley china cabinet very 'noisy' and rattley room!
80hz : 108db
70hz : 107
60hz : 110
50hz : 114
40hz : 106
30hz : 96
20hz : 89
i must check voltage in somehow because i want to know im getting the full 20watts! the room markedly goes boomy at 50hz
115db ish seems to push the hairs on my legs,starts giving in 'feelings' of high SPL bass.
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