Alta Audio’s IO is unimposing in physical size, but presents a large and wide image with extraordinary bass. An audition will make you wonder how it can recreate the space and specificity of the concert hall while packing the wallop and power of live instruments. Created using the same XTL transmission line bass and DampHard cabinet construction on the faceplate as our highly reviewed Celesta FRM-2 speakers, it does so at a far more attainable price and is housed in a beautiful Rosewood standard cabinet. The black seven inch midrange/woofer blends smoothly and seamlessly into the two inch pure ribbon tweeter, creating a sweet sound that can move you physically, while presenting intimate details of three dimensional images from the front to the deepest parts of the concert hall.

Io Tweeter
Io Tweeter

Elegant Ribbon Tweeter

A 3rd generation ribbon tweeter with excellent clarity and dynamics powers the exceptional upper register of the Io.

  • 3-rd generation ribbon driver technology
  • 12mm width reinforced sandwich ribbon diaphragm
  • High power handling, low distortion, very fast transient response
  • Strong Neodymium magnet

Full-range Driver
Versatile Woofer

Wide-band Midrange/Woofer

The Io’s state of the art midrange/woofer driver is designed for enhanced clarity and dimensionality.

  • Heavy-duty 6-hole cast frame
  • Three-part paper composite diaphragm: paper, Kevlar®, and glass fibers
  • Solid aluminum phase plug
  • Low-loss rubber surround
  • Accurate, smooth frequency response

Clearer, Faster, More Powerful Bass

All our cabinets are specially designed with our proprietary sonic geometry, making our cabinets themselves musical instruments that boost the bass of our speakers while delivering unparalleled clarity and speed.

Hear the Music, Not the Speaker

Our proprietary multi-layer, multi-density cabinet material dampens resonance at all frequencies. With a cabinet dead of resonance the speaker fades into the music creating clear, open, and dimensional sound reproduction.

Height: 14.5 inches

Width: 8 1/2 inches

Depth: 13 inches

Weight: 27 pounds

Driver complement:
– One 2 inch ribbon tweeter
– One 7 inch midrange/woofer
Sensitivity: 89.5 dB / 2.83 Volts @ 1 Meter

Frequency Response: 42Hz to 47kHz

Impedance: 4.Ohms

Requirements: 50 to 150 Watts per channel

Alta Audio Technology:
– XTL Bass
– DampHard faceplate