Pure Reference Extreme
"The Pure Reference Extremes use the identical drivers, crossovers, internal wiring, and binding posts as the Pure Reference. The difference between them is that the Extreme physically separates the enclosures for the mids/highs and the woofers."
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PRICE $26,800.00 In our showroom now!
Benefits of the Pure Reference Extremes
1. Separation of the enclosures reduces vibrations and enhances cabinet rigidity. The interaction of the woofers with the mids/highs is more effectively isolated. Sonically, this translates to greater purity and transient precision;
2. Monitor-The connection from the midrange to the binding post eschews any wire at all. The crossover inductor is a direct, hardwire connection to the driver and the binding posts.
- The Pure Reference, due to its size, requires a 5 ft cable to connect the crossover to the binding posts.
- The wire connecting the tweeter to the binding post has been reduced from 5 ft in the PR to 4" in the Extreme. The aural affect is enhanced transparency and immediacy.
- The small Monitor enclosure( just large enough to house the 2 drivers) reduces diffraction affects dramatically which results in a more open soundstage with greater focus.
Additionally, the front baffle is sloped which results in perfect time alignment between the drivers.The sonic consequence is disarming realism in reproduction.
3. Woofer- The wider stance (13" vs 9" for the PR) and shorter height ( 33"vs 55" for the PR) results in greater physical stability which reduces micro movement of the enclosure.
Furthermore, the extra width moves the back of the side firing woofers 4" further away from the enclosure wall. This minimizes reflections back to the woofer which slightly reduces non linear cone motion at very high SPLs. The bass of the Extreme has a tad more weight and impact than the Pure Reference.
The Pure Reference Extreme takes the already state of the art performance of the Pure Reference and elevates it to a slightly higher degree. The differences are subtle and requires the highest resolution ancilliary components and musical sources to discern. For the audio perfectionist who values sonics above all else and is not bothered by the requirement of an extra pair of speaker cables, the wider footprint and the less than sleek appearance of the Pure Reference, the Extreme will more than justify its slightly higher price. The Pure Reference will remain available since it still offers practical advantages and a different aesthetic appeal.
Optional Monitor Stands:
For those who wish to separate the Monitor from the subwoofer, we offer the Pure Reference Extreme Stands. They are constructed from the same special MDF of all Coincident enclosures which provide for the highest rigidity and minimal resonance. The base is 2 inches thick while the center post is 4" x 6" and are finished in the same Ash veneer as the speakers. Spikes are included. There is no speaker stand in existence that is superior. Price - $999 US/pr
Hookup:
The best method sonically is to connect one pair of speaker cables from the subwoofers to the amp and another speaker cable from the monitors to the amplifier. An alternative method - Connect a speaker cable from the subwoofers to the monitors and another speaker cable from the monitors or the subwoofers to the amplifier.
Specifications:
Frequency Response: 20hz- 27khz
Impedance: 8 ohms ( never dipping below 6 or going above 10 ohms).
Sensitivity: 94 db @ 1M - 1 watt
Power Requirements: 3 watts- 500 watts
Dimensions: Monitor - 12" H x 9" W x 6"D - Sub Woofer- 33"H x 13"W x 24" D
Weight: Monitor- 28 lbs Sub Woofer- 175 lbs
Driver Compliment - Monitor- 1- 1.2 " Accuton Ceramic Tweeter
1- 6.5 " Accuton Ceramic Midrange
Sub Woofer - 2- 12 " Nomex Fiber Cone Heavy Duty woofers.
Finish Options:
Reviews:
The Absolute Sound - TAS Issue 215
The Absolute Sound - March 2011
The Absolute Sound - Jan 2011
Avguide - Aug 2010
High End Audio - Dec 2009
Special Features For All Coincident Speakers:
Enclosures:
- Enclosures constructed from 1" MDF Hardwood, a specially developed material that is both very rigid, non resonant and highly uniform with regard to density.
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MDF is medium density fiber board. This is fabricated out of medium soft wood trees and bonded under extreme high pressure with a mixture of adhesives. Within MDF there are varying grades. Some are less dense , others are more or less consistently dense. The higher the density and more consistent throughout the board, the more costly and superior the product. Coincident uses a type often referred to as Ranger board. This board is the highest density and most consistent ( and costly being 2-3 times the price of regular MDF) and is made of medium soft and hard wood trees with a greater proportion of wood particle and less adhesive. Standard MDF boards have a density of 32 lbs/cc ft. Coincident boards have a density of 42 lbs/cc/ft and consistency throughout the board of 1% as opposed to 8%-10% for standard boards.
Our MDF is actually almost 50% more rigid and 40% less resonant. This translates to a huge sonic difference. Our boards have hardwood veneer bonded to them on both sides with a special hard drying adhesive under extremely high heat and pressure. This ensures that the veneer will never peel or bubble no matter how humid or hot the conditions. The sonic benefit of the adhesive we use in addition to the double sided veneering is a furthering of the overall rigidity and non resonant quality for which we strive in all our enclosures.
We have experimented within MDF hardwood(which is made of mostly hardwood trees) but found that while they were very rigid, they were much more resonant between 40hz- 120hz. Good for furniture , less appealing in loudspeaker enclosures.
It took 4 years of experimenting and measuring numerous substances, from birch plywood to ceramic based materials to granite and mineral composites and pure hardwoods to settle on the MDF Coincident eventually uses exclusively because it proved to have the best balance between high rigidity and low resonance which accounts to a large degree for the transparent, neutral or unbox like qualities of Coincident speakers.
- CNC (Computer Numeric Control) construction to ensure machining accuracy to within .01 %.
- Spline Joint Construction - All speaker joints are manufactured using this laborious method to ensure a very tight cabinet devoid of resonances.
- Finest furniture grade cherrywood that is veneered inside and out to eliminate any potential for the finish to peel or bubble.
- Elaborate computer designed bracing scheme which minimizes any cabinet flexing, which creates excessive storage and release of energy which results in audible distortions.
- Computer -aided design enclosure dimensions which help reduce internal standing waves.
- Elimination of Internal Damping - Instead of using inexpensive, resonant enclosure materials and then futilly attempting to damp out resulting resonances and colorations with soft, spongy interior substances, (which are responsible for decreasing system sensitivity and increasing internal reflections). Coincident enclosures are constructed of inherently non resonant, incomparably rigid materials that require no damping with its accompanying deleterious affect on sound quality.
- Enclosure Tuning: All Coincident enclosures are tuned to a very high fundamental resonance frequency of 350 hz, (as opposed to the 80 hz resonance of most speakers). This high frequency tuning technique renders resonances sonically benign and inaudible. Resonances are effectively dissipated out the enclosure and transformed to thermal energy. The end result is an enclosure with no audible colorations.
-The highest quality finish and construction, unsurpassed by competing speakers costing 5 times the price.
Drivers -
- The finest European drive units that are manufactured specifically for Coincident and /or modified by Coincident for enhanced performance. All drivers are thoroughly tested and matched to within .2 db to ensure that all speakers match the reference, thereby eliminating any unit to unit variation.
- Unlike many competing speaker companies that use cheap drivers and attempt to extract greater performance through crossover manipulation, Coincident firmly adheres to the belief that only superior drivers can produce superior sound, (eventhough this is a much more costly path to follow).
- All drivers are highly sensitive, have uniform impedance characteristics AND possess high power handling capability for the utmost in reliability and sonic excellence.
Crossovers-
- Computer Aided Designed crossover networks that use only first order designs, (to ensure phase coherency and sonic purity). Constructed of the finest components-high gauge OFC air core inductors, precision high wattage metal oxide resistors, high voltage polypropylene (Auric Cap) capacitors all matched to within 1%, all lead to lead construction and then hand soldered. This method ensures the shortest signal path and purest sonics. Furthermore, since every component is hard wired, the elimination of circuit boards and terminal connectors means that there is nothing to corrode, oxidize or deteriorate over time.
- Only one component is in the signal path for each driver. This guarantees the passage of the most musical information with the least coloration.
Wiring:
- Specially developed,highly acclaimed Coincident 6N copper cable is used for all internal wiring.
- Shortest signal paths are maintained.
- All cable is hardwired to the drivers, crossovers, and binding posts,(which are heavy duty solid 3/8 " pure copper, gold plated - 5 way).
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