ZACaudio: Speaker Design

ZAC MTM Stereo Speakers

These loudspeakers were built with versatility in mind. The Seas 27TFFC tweeters provide a warm, yet extremely clear high end. Complementing these tweeters are the Tang Band W6-1721 woofers. These 6.5" drivers are monstrous in size and their high Xmax and underhung magnet geometry give these loudspeakers the ability to achieve powerful and accurate low end in a sealed enclosure. Featuring an inviting and extremely accurate sound, these loudspeakers present an unbiased representation of any audio signal.

Design Highlights:

An extremely clear and detailed loudspeaker designed to provide a realistic listening experience.

Sealed enclosure for accurate transient response
Soft-dome fabric tweeter for clear highs
Dual woofers for low distortion and controlled vertical directivity
Professional quality passive crossover components
Authorative low end
Excellent off-axis response
Provides 90 dB SPL continuous with +15 dB of headroom for dynamic response
+/- 2.5 dB form 65 Hz to 17 kHz

Downloads:

The Drivers:

The Seas 27TFFC tweeters present a warm yet articulate sound with wide dispersion characteristics. The ability to use a moderately low crossover point, and their high power handling capabilities were major selling points. They blend in perfectly with the dual Tang Bands.

Seas 27TFFC

The Tang Band W6-1721 drivers are absolutely monstrous. The underhung magnet and high Xmax provide extremely low distortion even at higher power levels. These drivers shine in a sealed enclosure, providing quick and accurate lows with precision and power all the way to their f10 of 35 Hz.

Tang Band W6-1721

The Cabinets:

The cabinets of these loudspeakers were designed with both looks and acoustical benefits in mind. The braced box within a box design features a 3/4" MDF inner layer with a 3/4" 13 ply Baltic Birch outer to eliminate any pesky resonances. They are solid, weighing in at 65 pounds each!

The Crossover:

A third order Butterworth crossover point at 1.7 kHz allows each driver to cover the frequencies they do best without significant overlap. Professional grade crossover components were used for clear and uncolored sound with affordability in mind. SA Clarity Caps, Sidewinder and Sledgehammer inductors, and Mills non-inductive resistors were chosen for the job.