Blumenstein Abby Mk II 6.5" Wide-Band Speaker

The Blumenstein Abby Mk II is a spiritual successor to the original Cain and Cain Abby, a high-efficiency 6.5" wide-band speaker built by Blumenstein with key improvements over the original: a critically damped bass reflex enclosure replacing the original Voigt pipe design for cleaner, more musically versatile bass, and Baltic birch plywood construction replacing the original solid alder and particle board for superior long-term cabinet stability. 96dB efficient and designed to work beautifully with subwoofers at a 65Hz crossover point.

Type and Technology

Single-driver wide-band passive bookshelf speaker. 6.5" wide-band driver in a critically damped bass reflex enclosure, Blumenstein's redesign of the original Cain and Cain Voigt pipe cabinet produces cleaner bass and improved performance with complex, demanding music, particularly percussion instruments. 96dB efficiency, genuinely suited to low-powered single-ended tube amplifiers from 2 watts upward. 60W RMS power handling. Recommended subwoofer crossover at 65Hz for full-range extension. Baltic birch plywood throughout, chosen over the original solid alder and particle board for long-term dimensional stability and acoustic consistency.

Sound Character

The Abby Mk II inherits the original Cain and Cain Abby's hallmark qualities, natural midrange presence, holographic imaging from a single coherent wide-band driver, and an organic, unhyped character that rewards acoustic music, jazz, vocal recordings, and any program material that benefits from phase-coherent single-point-source reproduction. The bass reflex enclosure refinement addresses the Voigt pipe's tendency toward one-note bass in demanding music, producing a cleaner and more rhythmically convincing low-frequency foundation without sacrificing the openness and speed of the original design.

Build and Finish

Baltic birch plywood cabinet. 9" wide x 12" deep x 16.5" tall. Designed and built by Blumenstein. Works with subwoofers for full-range extension, 65Hz crossover recommended.

Best For

Low-powered tube amplifier owners who want a high-efficiency single-driver wide-band speaker with genuine musical coherence, particularly those who appreciate the original Cain and Cain Abby and want the improvements the Mk II brings.

Specifications