Crossover Network

Woofers

Cast Aluminum Frame: The woofers feature a cast aluminum frame. The frame is lightweight, yet rigid, to resist flexing during long cone excursions to deliver powerful bass. The frame contains an integral Vented Radial Aluminum Shorting Sleeve and Heat-sink (patent-pending) to help keep the voice coil cool under all drive conditions. The tinsel leads are woven directly into the spider for durability

Cone Construction: The woofers use a hybrid glass fibre cone with pressed-in cross-ribs for increased stiffness. This design helps break up major resonant modes for accurate bass response and mid-range sound clarity. A solid machined Billet Aluminum Phase plug prevents phase interactions of the sound waves for more focused sound.

Surrounds: The speakers use patent-pending NBR (Natural Butyl Rubber) Multi-Roll surrounds. This design and material lets the woofer motor structure maintain stable suspension integrity at any drive level without sacrificing cone surface area.

Motor Structure: The SPX-17PRO woofers use neodymium magnets to allow a shallow mounting depth and a narrower motor structure, for easier installation.

Mounting Options: The woofers fit standard 6-3/4 applications, and also include 5x7/6x8 adapter plates and two round adapter rings for non-standard applications:

• 6-3/4" Spacer Ring: fits the opening of a standard 6-3/4" and raises the speaker approximately 3/8"
  • Depth: 2.126"
  • Height: 0.795"
  • Cutout Diameter: 5.281"
  • Frame Diameter: 6.663"
• Flush Mount Ring: requires a round opening larger than a 6-3/4" speaker, the metal grill also snaps into this mounting ring
  • Depth: 2.789"
  • Height: 0.302"
  • Cutout Diameter: 6.637"
  • Frame Diameter: 7.3"

Tweeters

Design: Rather than a vibrating diaphragm like conventional dome tweeters, the large Ring Radiator tweeter moves linearly; this ensures low distortion and smooth response with no harshness. Dual suspension pivot points minimize distortion and maximize speed. An integrated Wave Guide provides optimized frequency response and sound dispersion. The back of the tweeter has a non-reflective cast aluminum tuned air chamber to increase SPL and dynamic response.

Mounting Dimensions:

• Mounting Depth: 0.875"
• Mounting Height: 0.376"
• Cutout Diameter: 2.196"
• Frame Diameter: 2.394"

Crossover Network

Tweeter Level: The crossover network has four tweeter level settings for fine tuning; 0 dB, -1.5 dB, -3 dB, and -4.5 dB.

Phase-Link: Alpine's original phase-link technology gives the SPX-PRO series crossovers the ability to adapt to many different speaker mounting configurations (locations). It's designed to optimize the performance of the speakers in real-world installations. Six different phase link modules can tune the system for optimum frequency response, imaging, and staging no matter where the speakers are mounted in the vehicle.

Bi-Amp Inputs: The speakers can be powered by a single input to the crossover or Bi-amplified. The crossover's default connection is a single input, using two solid jumper bars to link the input signals. To bi-amp the speakers, you will need to remove the jumpers and connect the woofer and tweeter input signals separately.

Inputs/Outputs: The crossover inputs and outputs are 0.187" wide male quick-slide terminals. Wire is not included with the speakers.

Dimensions:

• Width: 6.372"
• Height: 1.271"
• Depth: 4.414" (plus wiring)