COHERENT AUDIO FIFTEEN

A CUSTOMIZED AND HANDCRAFTED LINE OF HIGH SENSITIVITY COAXIAL LOUDSPEAKERS

DESIGNED AND BUILT WITH GREAT CARE AND ATTENTION TO DETAIL

TRUE TESTIMONIES OF FRANK FAZZILARI DESIGN AND  QUALITY

NEW 2022 LINE

CUSTOM MADE LOUDSPEAKERS - PRODUCT OF CANADA

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"THE FIFTEEN"

Super Monitor & Floorstanding Loudspeaker

 

 

Modified  15” Radian Coaxial driver with crossover based on totally new design principles

 

As with all Coherent loudspeakers, the cabinet design follows the classical Golden Ratio proportions. This speaker series however offers a choice of two aesthetic designs - a standard Floorstander (FS-MGRA / Modified Golden Ratio), and an optional custom order GRA Super Monitor (SM-GRA / Golden Ratio).

This series includes 2 models, covering 2 Performance Levels :

  • FIFTEEN Signature - FS-MGRA Floorstander

  • FIFTEEN Reference - FS-MGRA Floorstander

All speakers in the FIFTEEN Series incorporate a custom co-axial Neodymium 15" driver from acclaimed Radian Audio, custom crossover and "Premium" components -- all carefully selected to deliver a very high level of exquisite musicality, and this regardless of music genre !

The cabinets have twin rear ports to deliver an open and transparent sound easily driven by low power tube amps, and include a unique internal baffle structure to minimize standing waves.

OPTIONS

Optional "Premium" Veneer Finishes available - CALL 

  • Premium Veneer up-charge per pair : $380

  • Subject to longer delivery lead time.

SUP

Custom Made in Canada

FIFTEEN FS-MGRA SIGNATURE            $ 10,050  /   + $300 Flat Dropship Charge

 

FIFTEEN FS-MGRA REFERENCE           $ 13,300  /   + $300 Flat Dropship Charge

FIFTEEN SM Monitor Upcharge                $ 375      Finished Super Monitor Stands / pair 

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Specification

Type                     

Rear ported, concentric single driver 
 

Cabinet                 

Canadian MDF construction

Spike / Cone - ready Threading
 

Finish                      

Stained, varnished wood veneer

  • Figured Mahogany or Tiger Maple
     

Drivers                    

  • 15 " co-axial                             

  • 3 " high frequency dome

    • With wave guide

  • Magnetics / Diaphragm :

    • SignatureNeodynum-Aluminum

    • Reference : Neodynum-Beryllium 

  • 150kHz Piezo Super Tweeter

    • All Models​
       

Internal wiring      

All Models : Duelund / Jupiter Cu Cryo

Option : Less Loss CMARC

Crossover Coil & Cap     

  • Signature : Solen Hepta-Litz Coil

  • Reference : Mundorf Feron Foil Coil

  • Signature : Mundorf SGO Capacitor

  • Reference : Mun, Jup, Duelund Tri-Cap

    • SGO / HT Wax / JDM Ag Foil

Performance & Dimensions


Frequency Response 

GRA Super Monitor

36 Hz - 20kHz + / - 3dB 

  • To 150kHz with Super Tweeter

MGRA Floorstander

26 Hz - 20kHz + / - 3dB 

  • To 150kHz with Super Tweeter

 

Sensitivity                

Signature & Reference : 99dB
 

Nominal Impedance                      

8 ohms
 

Input Power                    

2 - 400 Watts RMS

Connectivity

5-way Binding Posts

                           

Dimensions      

Super Monitor : 20W x 17.5D x 32.5H

  • Super Monitor Stand : 8.5H

Floorstander : 20W x 17.5D x 41H

Weight

60 lbs each

The Design

The focus of Frank's research is to : 

Design and build an accessibly priced speaker that would most realistically deliver the micro-dynamics, vividness, dimensionality and excitement of live music

After numerous prototypes, extensive listening tests  and continuous design refinements, Frank determined  that the best way to achieve the  desired objectives would be through a high sensitivity and high quality full range co-axial driver.

 

The basic requirements were ultimately fulfilled by the American-made Radian coaxial drivers

However, this was only the the starting point :

  • The Radian driver undergoes extensive modifications by Coherent Audio

  • The modified driver and is then matched to a special crossover designed and built by Coherent

  • This crossover is based on totally new design principles and incorporates special coils which are built by Coherent Audio

  • Finally, and very importantly, each model of coaxial driver is matched to a Coherent designed and hand built cabinet that incorporates unique design features to allow the modified coaxial units to perform at their maximum capability

 

The end result is an outstanding and very exciting new range of high efficiency speakers offering :

​​

Extremely accessible pricing for the performance

and hand-built quality being offered

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Coherent Line

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