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#149700 - 10/18/06 02:42 PM Using The Radio Shack SPL Meter?
Robot Offline
hobbyist

Registered: 08/24/06
Posts: 24
Hey all,

Before I get my new M60’s, I wanted to make sure I understood how to use this thing properly. The below is instructions were taken from Audioholics:

Quote:

“Place the SPL Meter at the listening position at ear level with the Mic end pointed toward the ceiling. Select “C” weighting, response slow then, turn the dB dial to 70. Activate the internal pink noise generator of your Receiver and select manual test tone. Now adjust each speaker to +75 dB reference. When you are adjusting the surrounds make sure your body is not in a direct path of the speaker and make sure the house is quiet. When doing the calibration, only the test tone should be heard (A/C, ceiling fans, ect. should be turned off). I like to adjust the subwoofer level to + 80dB for wow effect. Your taste may vary.”




What I don’t understand is the +75dB. My receiver (Pioneer ELITE) only goes to +12. What am I missing?

Thanks


Edited by Robot (10/18/06 02:42 PM)
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#149701 - 10/18/06 02:43 PM Re: Using The Radio Shack SPL Meter? [Re: Robot]
Ken.C Offline
shareholder in the making

Registered: 05/03/03
Posts: 17920
Loc: NoVA
OK, ignore the volume settings on your receiver. It's talking about the reading of 75 dB on the meter.
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#149702 - 10/18/06 03:08 PM Re: Using The Radio Shack SPL Meter? [Re: Ken.C]
Robot Offline
hobbyist

Registered: 08/24/06
Posts: 24
So where should I set my receiver to test? My reference level is between -10 and -5 on my receiver.
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#149703 - 10/18/06 03:31 PM Re: Using The Radio Shack SPL Meter? [Re: Robot]
WhatFurrer Offline
aficionado

Registered: 12/02/03
Posts: 692
Loc: Round Rock, Texas
Robot,

Set up the meter and then turn the volume up on the reciever so that the left front speaker registers 75 db on the meter...Disregard where the volume control on the reciever is set.

Hope this helps.

WhatFurrer


Edited by WhatFurrer (10/18/06 03:34 PM)
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#149704 - 10/18/06 03:42 PM Re: Using The Radio Shack SPL Meter? [Re: WhatFurrer]
Robot Offline
hobbyist

Registered: 08/24/06
Posts: 24
Thanks, WhatFurrer.

Sory for my ignorance, but it doesn't say "75dB" on the meter (I have the analog version).

It reads from -10 to +6.


Edited by Robot (10/18/06 03:47 PM)
_________________________
VP150 / QS8(3) / M60s

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#149705 - 10/18/06 03:55 PM Re: Using The Radio Shack SPL Meter? [Re: Robot]
Ken.C Offline
shareholder in the making

Registered: 05/03/03
Posts: 17920
Loc: NoVA
Ah. You set the meter to 70 dB (or 80 dB) and read it at +5 (or -5)
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#149706 - 10/18/06 04:23 PM Re: Using The Radio Shack SPL Meter? [Re: Ken.C]
Robot Offline
hobbyist

Registered: 08/24/06
Posts: 24
Quote:

Ah. You set the meter to 70 dB (or 80 dB) and read it at +5 (or -5)




Oh, ok. I see.

Thanks!
_________________________
VP150 / QS8(3) / M60s

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#149707 - 10/18/06 05:00 PM Re: Using The Radio Shack SPL Meter? [Re: Robot]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13357
Loc: Iowa
Does your receiver have auto setup with a mic? If so, run that first, that is what I do. Then I go back and check with an SPL meter to make sure that the speakers are the same on the meter. I've heard the starting with the left speaker thing first, but I don't think that matters with the newer receivers.
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#149708 - 10/18/06 05:45 PM Re: Using The Radio Shack SPL Meter? [Re: SirQuack]
Haoleb Offline
connoisseur

Registered: 09/25/02
Posts: 1488
Loc: Maine
The THX reference level for movies is 85db

I think once you get your meter out and start adjusting the volume to 85db with pink noise you'll find its TOO LOUD!

At least, I did.
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#149709 - 10/18/06 07:23 PM Re: Using The Radio Shack SPL Meter? [Re: SirQuack]
Robot Offline
hobbyist

Registered: 08/24/06
Posts: 24
Quote:

Does your receiver have auto setup with a mic?




It does, but I never agree with it.
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