Pinnacle Speakers, a unique family owned and operated business since 1976, designs and manufactures speakers famous for their sterling sound. Our products combine superior technologies with artistic expertise, supported by extended warranties, the longest of any major speaker brand. We are proud to provide a personal service philosophy that's unprecedented in these times, and in this highly automated world.

AC 650

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  • Gold plated binding posts

  • 7 Year Transferable Warranty on parts & labor

  • Designed and Manufactured in the USA

System Type: 2-Way, 4th Order rear vented with patented Diaduct tuning

Component Drivers:

  • 3/4" liquid cooled soft dome tweeter

  • 6 1/2" fibercone woofer with rubber surround

Frequency Response: 40-21 kHz (+/- 3 dB)

Crossover Frequency: 2.5 kHz

Recommended Amplifier Power: 20-150 Watts RMS per channel

Operative Power Range: 5-85 Watts RMS Continuous, 250 Watts Peak

Sensitivity: 91 dB (2.83 Volts Pink Noise @ 1 Meter)

Nominal Impedance: 8 Ohms

Dimensions: 9 5/8" Wide x 16 5/8" High x 8 3/4" Deep

Finish: Premium Black or Cherry Vinyl

Weight: 30 lbs. per pair



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6.5" 2-way bookshelf speaker with a sensational soft dome tweeter for extreme accuracy. Pinnacle's own patented Diaduct bass port ensures superior bass from a small speaker. Can be used as main speakers in your Home Theater / audio system or as your primary set of music listening speakers. The extreme accuracy of the AC650 makes it a great choice for recording or music studios.    

"Their stereo presentation was flawless ... I cannot imagine another speaker in its price range that can surpass its overall sound quality." "... I tried to find their Achilles heel, but it eluded me. It ... could go toe to toe with others many times its price and more than hold its own." - Julian Hirsch - Stereo Review

Love your speakers! - Doug Hendrix

We use these for reference monitors in our video editing suite. - A.W. Studios

..excellent speakers and well made. - Pierre Lacombe

I am extremely impressed. They sound absolutely great. Thanks for the engineering, I really appreciate your craft. - Calvin Michael

I am writing to tell you how astounded I am at the quality. This is not a rave originating from a novice weaned on Bose... I am impressed with your achievement. - Jack Gilvey

These things always amaze me after many years. These little 6.5's rip and sound awesome! - Ken S.

I love my AC-650's! - Stan

...enjoying the wonderful full range sound.. - Jim I.

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