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analogue sound level meter will NOT read 75db

post #1 of 19
Thread Starter 
Help!!I have a sound level meter..not the radio shack one...and the absolute furthest it will read is 72.5 db.i put a new battery in and the battery test only goes to 72.5 db. i have it set to range 70.C weighting and Slow response.I probably almots blew my speakers trying to get a 75 db reading.What in god's name is goin on?
post #2 of 19
Is it this one?

http://www.bswusa.com/proditem.asp?item=SLM100
post #3 of 19
Thread Starter 
http://www.amazon.com/Velleman-ANALO...6?ie=UTF8&s=hi
Thats it.I could have the speakers at +12 db levels.Volume all the way up and it wont go any higher than 72.5 if range is set to 70
post #4 of 19
You got the one made in taiwan which is sometimes shipped calibrated out of range from the factory,another thing you can do is check the adjustment screw to make the needle go to zero and if it has no set screw then you will need a new one.
The one in the link I provided is the same one that radioshack sells without the name on it.
post #5 of 19
Thread Starter 
adjustment screw?
post #6 of 19
Thread Starter 
of course i got the one that can get messed up..of course i would pick that one.please for the love of all that is good on this god given earth tell me i dont have to get another one.tell me this is a dream.please.please.please.
post #7 of 19
On the left side of the meter right next to the RCA jack there is a small hole that adjusts the meter's needle it should be labeled "Cal",you will need a micro screwdriver to make the adjustment it's like the ones that come in a mini screwdriver set like in the link below.

http://www.amazon.com/FULLER-135-091...8?ie=UTF8&s=hi
post #8 of 19
Thread Starter 
why do i even bother?i just ordered ps2 component cables..defective....i get threes company season 4..some episodes dont work..now i get a sound level meter..its all screwed up....its these little things that make me wanna bash my head against a wall till it busts open
post #9 of 19
Can't you read all I said is use a screw driver like the one in the link to adjust the meter's needle to make it even to zero.
It's a simple fix that ANYONE can do!
post #10 of 19
Thread Starter 
what does making it even to zero do?
post #11 of 19
Switch to Range 80.
Adjust to -5.
post #12 of 19
Thread Starter 
i just ended up ordering the digital radio shack meter.i dont have any of the tools for that cal thing
post #13 of 19
Quote:
what does making it even to zero do?

It fixes your meter so it can read properly like setting the time on a clock.
post #14 of 19
Quote:
Originally Posted by louthewiz View Post

Can't you read all I said is use a screw driver like the one in the link to adjust the meter's needle to make it even to zero.
It's a simple fix that ANYONE can do!

That's a good theory, but how accurate will the meter be then? If I don't know how loud the sound is, and the meter is not working, how do I know that I have not caused a worse problem?

Mark
post #15 of 19
zeroing the meter is the same as setting a scale to zero so that the meter will be accurate when measuring sound.
post #16 of 19
Slow down just a tad.

What setting(s) should the meter be adjusted to before one zeros the meter?

Should the meter range be in the "off" position for example?
post #17 of 19
Yes
post #18 of 19
Thread Starter 
well i got the radio shack digital meter.every speaker is at 0 db except the center which is -4..apparently all the other speakers r close in distance lol.....i didnt really know how to handle the sub so i just kept it at 0 db and turned the volume ON the sub to half way
post #19 of 19
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AVS › AVS Forum › Audio › Audio theory, Setup and Chat › analogue sound level meter will NOT read 75db