Bruel & Kjaer 2609 Measuring Amplifier
Just selling a used Bruel & Kjaer measuring amplifier. The mic is extremely sensitive. Could literally pick up a pin drop in another room!. B&K make very good test equipment.
Different scales for the front of the unit can be purchased from B&K. SPL versus Frequency shouldn't be a problem. Plot it on graph paper. Near field and off axis also. Supplied with instruction manual.
Here is the link on ebay.
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