Add $50.00 for FREE shipping
Maximum Power Handling
750 Watts
Maximum Zones
12 Zones
Ease of Installation
Intermediate (Installs < 60 minutes)
Audioplex Technology
Other Ways to Shop
On Sale
Connect 12 Pairs of Speakers to your Audio Amplifier or Receiver with Equal Power Distribution to Each Pair
Audioplex Technology OC-12 w/ Cover Impedance Protected Speaker Connection Hub
Audioplex Technology OC-12 w/ Cover Impedance Protected Speaker Connection Hub
Click for larger image and other views
Diagram of Impedance Selector Switch Sample Wiring Diagram Without Cover
Audioplex Technology OC-12 w/ Cover Impedance Protected Speaker Connection Hub
Item# 82530
Price: Normally $474.62 
Hot Deal $285.92
Free shipping on orders over $50 - See Details


  • Impedance protection for up to 12 pairs of speakers
  • 300 Watt power handling
  • Equally distribute audio power to each pair of speakers
  • Built-in low and high pass filters
  • Built for free-standing and rack mount applications

Essential Info

Maximize the audio distribution of an amplifier or receiver by using the Audioplex Impedance Protected Speaker Connection Hub to equally divide the full power available from your amplifier or receiver to each of your speakers. The hub can handle up to 300 Watts of power and is designed to be inserted between the audio amplifier or receiver and up to 12 pairs of 4 Ohm speakers or 24 pairs of 8 Ohm speakers. Two Trifilar wound high efficiency auto-transformers with switch selectable taps ensure no significant power loss under any load condition. The product offers the ultimate in convenience, allowing maximum power transfer while maintaining a safe load of 4 Ohms or higher regardless of the number of speakers in use. The hub provides connections from the amplifier or receiver and to the speakers that are directly wired to the PC board which will minimize bad wiring connections. A unique high-pass filter is included to prevent very low frequency (subsonic) information transferring to the impedance matching system. The high pass filter reduces sub-audible audio overloading, which causes a transformer impedance drop. This leads to transformer core saturation and the resulting impedance drop transients caused by excessive low frequency power input. Rubber feet are included for free standing installations, rack ears are included for rack mounting, and the included cover protects the speaker connections and accidental switching of the impedance level.


What's Included

  • Impedance Protected Speaker Connection Hub
  • Six rubber feet, six black screws and six rubber nuts
  • Cover
  • More Info

    With the impedance selector switch optimally set there will be a level drop, but full amplifier output will be available divided equally among the 12 speaker outputs. The unit is capable of transforming a 1/3 Ohm load to appear as a 4 Ohm load to the amplifier, which is equivalent to 12-4 Ohm or 24-8 Ohm speakers operating simultaneously.



    Manufacturer: Audioplex Technology
    Manufacturer Product No.:OC-12 w/ cover
    Frequency Response:20Hz - 20KHz + 0.5db, -2.0db
    Dimensions:19" L x 3.5" W x 4" H
    Warranty:Manufacturer Lifetime Limited

    Important notes:
    Defective exchanges for identical item within 30 days of purchase. After 30 days, please contact the manufacturer.
    Manufacturer contact information: Audioplex Technology, Tel: (603) 544-8601 Ext 234


    Diagram of Impedance Selector Switch  Sample Wiring Diagram  Without Cover   
    Diagram of Impedance Selector Switch  Sample Wiring Diagram  Without Cover   


    3 Ratings
    5 star: 100%  (3)
    4 star: 0%  (0)
    3 star: 0%  (0)
    2 star: 0%  (0)
    1 star: 0%  (0)
    Average Customer Rating
    (3 customer ratings)
    Share your thoughts with other customers
    JOHN -- tallahassee, FL   1/31/2010
    Couldn't be happier. Works great and made solid.
    MANNY -- bethel park, PA   12/14/2009
    So far so good. It works well.
    TY -- spencer, IN   9/4/2009
    Worked like a charm!


    Speaker Wire  Speakers     
    Speaker Wire  Speakers     

    Related Items

    Customers Also Bought

    Sign-up for Exclusive Email offers 
    How to Order Track Your Package Shipping Returns Contact Us Customer Service Retail Store
    Getting Started Learning Center FAQ Dealers Customer Testimonials Affiliate Program
    About Us INSTEON Press Awards Employment Guarantees Security & Privacy
    Free Catalog Email Newsletter Forum RSS Site Map
    Have questions? Call us at 800-762-7846 (Mon-Fri 5am-7pm and Sat 6am-3pm PT) or send us a message
    Place your order by 3pm PT for same day shipping
    Copyright 1995-2014 SMARTHOME™
    Verisign Secure Site PayPal Acceptance Mark