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AR-303 Frequency Response Overlay with AR-3a

Pete B

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On 5/30/2018 at 10:26 AM, Pete B said:

Thanks, that's it!

Do you happen to know if the mid and tweeter pots were all the way up?

Both controls at or near maximum.  These were my AR-3as that were tested at AR by Bill Bush and KK before being sent to Julian Hirsch for the initial test of the AR-303 by Hirsch-Houck Labs.




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Thanks Tom,  assuming that the mid was all the way up, then using 1 KHz as a reference 

dropping it about 7 dB would bring it very close to the AR-303.  Also, interesting to note that

My preference listening to the AR-11 was -6 dB on the mid which agrees with that curve 

and whatever the designers did on the 303.  Assuming the AR-11 is very close to the 3a of


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Does anyone have  AR-3a Technical Data Sheet #L-1621 that they can post?

I had it probably 10 years ago on a computer that hasn't been booted in 5 - 10 years.

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