BD 650 Series II

Pinnacle Speakers is proud to introduce its newest 6.5” 3-Way audiophile reference music monitor, the BD 650. The culmination of intensive engineering research and development, this stellar performer offers a huge soundstage and brilliant accuracy and detail.

With superior quality components, particularly a new dedicated midrange driver, this gem of a performer is exceptional for critical music listening and handles all home theater demands effortlessly. Outstanding low end frequency response at 36 Hz is quite possibly the best bass in it’s class on the market today.

The Black Diamond Series is a stunning collection of contemporary Audio/Home Theater speakers by Pinnacle. These speakers are sophisticated, stylish and accurate audio reproduction instruments.

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"The Verdict: The Pinnacle Black Diamonds are stellar performers with a winning personality, delivering consistently pleasing sound." - Sound & Vision


  • Beautiful multi-layer piano lacquer finish, a process that takes 1 full week to produce
  • Dedicated Midrange Driver for Superior Clarity & Detail
  • Die Cast Metal Woofer Basket for Improved Bass Definition
  • Die Cast Phase Plug for Improved Crossover Function
  • Butyl Rubber Surround Provides Excellent Cone Control and Exceptional Durability
  • Metal Grille Fasteners for enhanced durability
  • Video shielding allows placement near TV without interference
  • Built-in Automatic Overload Protection
  • Gold plated binding posts for a high quality and secure connection
  • 12 Year Transferable Limited Warranty on Parts & Labor
  • Designed in the USA

System Type: 3-Way, 3-Element, 4th Order Front Vented

Component Drivers:  

  • 1" liquid cooled silk dome tweeter with neodymium magnet
  • 4" polycone midrange with butyl surround and die cast phase plug
  • 6.5" polycone woofer with butyl surround and die cast basket

Frequency Response: 34 Hz - 25 kHz (+/- 3 dB)

Frequency Range @ -6 dB: Low: 30 Hz, High: 30 kHz

Crossover Frequencies: 500 Hz & 4 kHz

Recommended Amplifier Power: 15 - 200 Watts RMS per channel

Operative Power Range: 15 - 200 Watts, 300 Watts Peak

Sensitivity: 90 dB @ 1 Watt / 1 Meter (2.83 Volts Pink Noise)

Nominal Impedance: 8 Ohms

Dimensions: 7 7/8" Wide x 15 5/8" High x 14 1/8" Deep (with Grille)

Finish: High Gloss Piano Black

Weight: 21 lbs. each

User Reviews

Fantastic speakers... Bass response is probably the best I've heard in its class. Beautiful gloss black finish and very well made. Crystal clear mids/highs for music and movies.  Very reasonably priced... I am sold on Pinnacle speakers, you won't be disappointed! - Erwin

The sound of these speakers is heavenly...beyond anything I expected. - Yuri

I have owned these speakers for two years and I love them. Thanks so much... George

I am the proud new owner of a pair of BD650s. They are superb. - Nick Nace

I'm very pleased with my pair of BD-650's...(they) exhibit superior bass response for such a small speaker & amazing clarity when playing jazz vocals. They really do sound "bigger" than they are. The black piano lacquer finish is beautiful. - Richard Wormer

I love the speakers. Crystal clear, great fidelity. - Craig B.

These speakers sound incredible! - Jay M.

Love these speakers - C. Joseph Grigsby

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