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Our knowledgeable advisers like Eddie Fields can help you choose and buy the gear you’ll love for years to come. Call, chat, or email us, or come by the showroom!

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Overview

Featuring our signature first-order crossover and custom drivers—pure diamond tweeter, beryllium high-midrange, and new carbon fibre mid-bass—alongside aluminium sandwich bass drivers in a bass reflex design. With a cabinet 25% larger than the Coltrane 3, it delivers deeper bass. The carbon fibre cabinet offers superior resonance control, maintaining the sleek Coltrane profile with structural enhancements for stability. Available in polished carbon fibre laminate or lacquered Piano Black finish.
  • 4-way bass reflex
  • Custom pure diamond tweeter
  • Custom pure beryllium high-midrange
  • Custom convex carbon fibre mid-bass
  • Signature first order crossover
  • Jorma internal wiring

Specifications :

Frequency range 18-60000 Hz +-2dB Power rating 350 W Sensitivity 89 dB/2.83 V Impedance 4 ohms (3.0 Ohms min) Type 4-way bass reflex Crossover frequency First order: 170, 1000, 6000 Hz Terminals WBT Nextgen Bi-wire Internal wiring Jorma (optional Statement)
Cabinet 20-30 mm carbon fibre laminate Piano lacquer with front baffle in a sandwich with aluminium, fibre board and solid wood. Stands Mirror polished stainless steel with Marten Isolators Dimensions W x H x D 41.2 x 120.5 x 74 cm (16.2 x 47.4 x 29.1”) With stands / isolators 52.5 x 127.9 x 78.8 cm (20.7 x 50.4 x 31”) Net weight 115 kg (255 lbs)

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FAQs

Please read our FAQs page to find out more.

Do you price match?

Yes. We match any authorised dealer, including big-box retailers. If you find the same product at a lower price, contact us and we'll match it.

Do you offer free shipping?

Yes — free shipping on every order, with 2-day delivery available on most products. Easy returns and exchanges are included.

Where is your showroom?

We're at 6362 Alder Drive, Houston, Texas. The showroom lets you hear and compare reference-level systems in person before making any decisions. If you're considering a larger purchase or installation, it's well worth the visit.

Can I buy online without visiting the showroom?

Yes. The full product range is available through the online store with free nationwide shipping. For more complex system builds, speaking with one of our advisers first tends to lead to a better result.

Do you offer financing?

Yes. Special financing is available through the BrandSource Credit Card for qualifying purchases, allowing you to spread payments over time with no annual fee. Promotional rebate savings are also available periodically. See the financing page for full details.

Do you install systems as well as sell equipment?

Yes — installation is central to what we do. We design and install whole-home audio and video, home theaters, media rooms, outdoor audio, lighting and motorised shades, and full smart home automation.

Do you provide support after installation?

Yes. We provide ongoing service and support to ensure systems continue performing as intended — not just on installation day, but over the long term.