General Asylum

certified

67.146.44.34

Story

In Reply to: RE: Where can I get an SPL meter that works? posted by PaulF70 on March 20, 2025 at 18:56:10

I used a Radio-Shack in a Laboratory setting just to see what it could do. The settings were spot-on with the Lab unit, a yearly certified one at the time, a thousand dollar one.

The boss said don't include the readings from the RS unit because it wasn't certified but it did very well on the readings from the Lab within +-1 db.

Proper position is critical free space

Follow Ups:

Rat Shack meter - M3 lover 11:38:59 03/22/25 (2)
We had a B&K SPL meter at work along with a calibration device. I was able to make minor adjustments to my RS meter with that. But it was so many years ago I don't remember how much adjustment I had to make or how close it came.

I still have that RS unit but only use it for relative readings, not precision.

Also I remember someone produced a correction table for the RS readings. That seemed to presume a lot to me that every RS meter was off by those specific numbers. :^)

"The secret of life is honesty and fair dealing, if you can fake that you've got it made." Groucho
- RE: Rat Shack meter - Rod M 14:39:49 03/22/25 (1)
  There is a link in the FAQ for the RS analog and digital meters. For the most part, the analog meter is close from about 80hz to 4K and then the numbers for correction are all additive.
  
  -Rod
  - https://www.audioasylum.com/audio/general/messages/49147.htm (Open in New Window)
  - The curves for digital are diffferent - E-Stat 07:38:16 03/24/25 (0)
    I embed them in spreadsheet formulas used for speaker placement measurements.

Post a Followup:

FAQ

Post a Message!

Forgot Password?

Moniker (Username):
Password (Optional):
	Remember my Moniker & Password (What's this?) Eat Me
E-Mail (Optional):
Subject:

Message:	(Posts are subject to Content Rules)

Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:	Automagically notify you when someone responds.

To view your new posting or follow-up, click on the RELOAD or REFRESH button on your browser.

This post is made possible by the generous support of people like you and our sponsors:

Atma-Sphere Music Systems, Inc.