Cardas · Iridium

Cardas Iridium Speaker Cable

From $215 per pair

Cardas · Iridium

The entry to Cardas speaker cables: a soft, flexible twisted pair of heavy 11.5 AWG Golden Ratio conductors with a rich midrange, strong bass and smooth treble.

Price is for a pair at the shortest length shown. Choose length, amplifier-end and speaker-end terminations in the selector.

2 × 11.5 AWG
Cardas Litz conductors, Golden Ratio stranding
Twisted pair
with cotton filler
10.5 mm
outside diameter
0.5–5 m
standard lengths, any length to order
Options and pricing

Authorized Cardas dealer · Delivery and installation by Pearl Audio · Trade-ins welcome

The story

Iridium Speaker twists two 11.5 AWG Cardas Litz conductors with natural cotton filler, bound in PTFE tape under an ultra-soft TPR jacket. It is hand soldered to Cardas CGMS spades or CABE bananas in Bandon.

Cardas says it suits virtually any amplifier and speaker combination, in long or short runs, and performs like a product costing much more. Jumpers are required for bi-wire speakers.

Measure along the path the cable will actually take; down the rack, along the floor, up to the speaker terminals; and round up. Cardas charges by the half metre. Both cables in the pair are the same length. Keeping left and right equal is the normal practice, even if one speaker is closer. Spades suit binding posts you can torque down; bananas are quicker and fit most posts. You can mix: for example, spades at the amplifier and bananas at the speakers.

Key technologies

  • Ultra Pure Cardas Copper. Grade 1, 99.9999% pure oxygen-free copper, drawn and annealed slowly through silver dies, then given a single poly-nylon coat to prevent oxidation and crosstalk between strands.
  • Golden Ratio scaled Litz conductors. Multi-stranded conductors in which each layer of strands steps up in size by 1:1.618 from the centre outward, a Cardas patent that controls strand resonance.
  • Quad Eutectic solder. Hand soldered with Cardas Quad Eutectic solder and Cardas rosin flux at 800 °F irons, by the Cardas terminators in Bandon.
  • Made in Bandon, Oregon. Every Cardas cable is built and hand terminated at the Cardas factory on the southern Oregon coast and carries the Cardas lifetime cable warranty.
Specifications
Type Loudspeaker cable, stereo pair
Conductors 2 × 11.5 AWG; Grade 1 OFHC Litz with Golden Ratio stranding, FEP insulation
Geometry Twisted pair with natural cotton filler, bound in PTFE tape
Dielectric FEP on each conductor; cotton filler, PTFE tape binder
Jacket Ultra-soft, flexible extruded TPR
Outside diameter 0.415 in (10.5 mm)
Terminations Cardas CGMS spades or Cardas CABE bananas, hand soldered
Bi-wire Not available as internal bi-wire; use Cardas jumpers
Lengths 0.5 m to 5 m standard (see selector); any length to order
Sold as Pair
Warranty Cardas lifetime cable warranty
Made in Bandon, Oregon, USA

Cardas Iridium Speaker product page and specifications Specifications from cardas.com and the Cardas 2025 Dealer Catalog (Spring 2025 Retail). Lengths are metric; Cardas builds any length to order.

Where it sits in the range

Cardas speaker cables run from Iridium to Clear Beyond; from Clear Sky X4 up they use Matched Propagation conductors, and Cygnus, Reflection, Clear and Beyond have compression-forged terminations.

Not available as internal bi-wire; add Cardas 11.5 AWG Jumpers for bi-wirable speakers.

Plan your Cardas system with Pearl Audio

Pearl Audio is an authorized Cardas dealer. We can measure your runs, recommend terminations for your amplifier and speakers, special-order lengths and connectors that are not in the selector, and let you hear Cardas cabling in our Portland showroom by appointment. Call (503) 222-2599 or email sales@pearlaudio.com.

The Pearl Audio experience

How we work with you

A system at this level should be heard, thoughtfully matched, and properly set up. From the first audition to long-term ownership, you work with the same people, in person.

  1. 01

    Listen first

    Hear the Iridium Speaker Cable by appointment in one of our two purpose-designed demonstration rooms, with your own music and time to compare without pressure.

  2. 02

    Delivery and installation

    We deliver and install throughout the Portland area, taking care of placement, connections, ventilation and system configuration ourselves.

  3. 03

    Support for as long as you own it

    We support everything we sell for as long as you own it, whether the answer comes by phone, in your home, or through factory service.

  4. 04

    A path for what comes next

    Trade-in assistance and qualifying 100% Trade-Up options give you flexibility when your listening priorities or your system change.

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