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October 2008
Back in 2006 Jamo redefined the state of the art in loudspeaker design with the launch of the breathtaking R 909 open-baffle stereo loudspeaker. This groundbreaking model delivered an extraordinary level of sonic replay, good enough to win plaudits the world over including Stereophile magazine’s coveted Golden Ear Award ’07.
Well, 2008 sees the launch of the next instalment in the Reference series success story. If there was one problem with the R 909 it was that not all audiophiles have a listening room large enough to accommodate and do justice to the demands imposed by the unique, open construction design of this dipolar giant. The new Jamo R 907 conclusively addresses that issue...
The Jamo development team’s brief for the R 907 was simple... to port the design and the acoustic characteristics of the R 909 into a new, less space-consuming speaker system. The result is a speaker that’s usefully smaller than its big brother but no less jaw-dropping in what it does...
Exhibiting the same sonic authority as the R 909, the R 907’s sound quality is incredibly open and dynamic, with extremely low distortion throughout the entire range. A highly-detailed midrange, with optimal voice reproduction, is combined with a firm, powerful and punchy bass unmatched by any other manufacturer’s mass-produced dipolar speaker.
Why is a speaker without a cabinet a good thing? Because boxed speakers suffer inherent compromises. While they allow deep bass to be generated boxes also resonate, something that affects dynamics and precision.
Room modes and reflections also place further restrictions on where you can place a loudspeaker but getting rid of the box enclosure should, in theory, allow you to create an ideal loudspeaker. The R 907 suggests, as the R 909 did, that there’s an awful lot of truth in that
The R 907... in detail
Fitted with two 305mm/12in woofers, a 140mm/5½in midrange and a customised 25mm/1in DTT (Decoupled Tweeter Technology) tweeter, the three-way R 907 employs a 43mm/1.7in thick baffle with a complex 7-layer lacquered multi-ply construction, a testament to this Danish company’s immense experience with traditional woodworking skills.
The 52.4kg/115.5lb speaker stands 119cm/46.8in high (the R 909 is 128cm/50.2in high) and is anchored by a substantial 23kg/50.7lb cast-iron plinth with double 5x60mm/0.19x2.4in braces to give additional stability.
The large bass drivers employ high quality open magnesium baskets plus lightweight paper cones with a polyurethane suspension. Paper cones may not be fashionable in some circles but they start/stop moving incredibly quickly and can reach very deep, as proven by the 380mm/15in versions in the R 909.
The midrange driver of the R 907 is build around the same type of Hard Conical Cone (HCC) with virtually flat frequency response well beyond the cross-over-frequency, which allows for a smooth and unobtrusive integration.
Although the magnet-system does not reach the same kind of sophistication it is nevertheless one of the lowest distortion drivers in this high-end-class.
Beyond those frequencies responsibility falls to an enhanced version of Jamo’s DTT (Decoupled Tweeter Technology) tweeter. DTT, a signature Jamo technology, prevents unwanted cabinet resonances reaching the tweeter by placing it in its very own suspension system... push the tweeter surround and it flexes under your fingers.
This hi-tech unit features a textile dome that’s coated several times, augmented with Jamo’s WaveGuide to dramatically reduce distortion. A double-damped chamber behind the magnet system is equipped with an anti-resonator plug to all but eliminate turbulence.
Last, but not least, a relatively simple crossover (1st and 2nd order) employing ClarityCap foil capacitors and air-coil inductors separates incoming audio signals and directs them to the appropriate drive units.
With such attention to detail and craftsmanship it’s no surprise that the result sounds amazing. Bass is firm and deep, the midrange crystal-clear and high-frequency detail precise and unmuddied. Coloration and reverberation are conspicuous by their absence.
As with the R 907 our intention was simple: to give owners the most direct access possible to an enriching musical experience that’s as close as possible to the ‘live’ event... but in a more room-friendly package than before. We think our new ‘baby’ achieves exactly that.
Back in 2006 Jamo redefined the state of the art in loudspeaker design with the launch of the breathtaking R 909 open-baffle stereo loudspeaker. This groundbreaking model delivered an extraordinary level of sonic replay, good enough to win plaudits the world over including Stereophile magazine’s coveted Golden Ear Award ’07.
Well, 2008 sees the launch of the next instalment in the Reference series success story. If there was one problem with the R 909 it was that not all audiophiles have a listening room large enough to accommodate and do justice to the demands imposed by the unique, open construction design of this dipolar giant. The new Jamo R 907 conclusively addresses that issue...
The Jamo development team’s brief for the R 907 was simple... to port the design and the acoustic characteristics of the R 909 into a new, less space-consuming speaker system. The result is a speaker that’s usefully smaller than its big brother but no less jaw-dropping in what it does...
Exhibiting the same sonic authority as the R 909, the R 907’s sound quality is incredibly open and dynamic, with extremely low distortion throughout the entire range. A highly-detailed midrange, with optimal voice reproduction, is combined with a firm, powerful and punchy bass unmatched by any other manufacturer’s mass-produced dipolar speaker.
Why is a speaker without a cabinet a good thing? Because boxed speakers suffer inherent compromises. While they allow deep bass to be generated boxes also resonate, something that affects dynamics and precision.
Room modes and reflections also place further restrictions on where you can place a loudspeaker but getting rid of the box enclosure should, in theory, allow you to create an ideal loudspeaker. The R 907 suggests, as the R 909 did, that there’s an awful lot of truth in that
The R 907... in detail
Fitted with two 305mm/12in woofers, a 140mm/5½in midrange and a customised 25mm/1in DTT (Decoupled Tweeter Technology) tweeter, the three-way R 907 employs a 43mm/1.7in thick baffle with a complex 7-layer lacquered multi-ply construction, a testament to this Danish company’s immense experience with traditional woodworking skills.
The 52.4kg/115.5lb speaker stands 119cm/46.8in high (the R 909 is 128cm/50.2in high) and is anchored by a substantial 23kg/50.7lb cast-iron plinth with double 5x60mm/0.19x2.4in braces to give additional stability.
The large bass drivers employ high quality open magnesium baskets plus lightweight paper cones with a polyurethane suspension. Paper cones may not be fashionable in some circles but they start/stop moving incredibly quickly and can reach very deep, as proven by the 380mm/15in versions in the R 909.
The midrange driver of the R 907 is build around the same type of Hard Conical Cone (HCC) with virtually flat frequency response well beyond the cross-over-frequency, which allows for a smooth and unobtrusive integration.
Although the magnet-system does not reach the same kind of sophistication it is nevertheless one of the lowest distortion drivers in this high-end-class.
Beyond those frequencies responsibility falls to an enhanced version of Jamo’s DTT (Decoupled Tweeter Technology) tweeter. DTT, a signature Jamo technology, prevents unwanted cabinet resonances reaching the tweeter by placing it in its very own suspension system... push the tweeter surround and it flexes under your fingers.
This hi-tech unit features a textile dome that’s coated several times, augmented with Jamo’s WaveGuide to dramatically reduce distortion. A double-damped chamber behind the magnet system is equipped with an anti-resonator plug to all but eliminate turbulence.
Last, but not least, a relatively simple crossover (1st and 2nd order) employing ClarityCap foil capacitors and air-coil inductors separates incoming audio signals and directs them to the appropriate drive units.
With such attention to detail and craftsmanship it’s no surprise that the result sounds amazing. Bass is firm and deep, the midrange crystal-clear and high-frequency detail precise and unmuddied. Coloration and reverberation are conspicuous by their absence.
As with the R 907 our intention was simple: to give owners the most direct access possible to an enriching musical experience that’s as close as possible to the ‘live’ event... but in a more room-friendly package than before. We think our new ‘baby’ achieves exactly that.
Back in 2006 Jamo redefined the state of the art in loudspeaker design with the launch of the breathtaking R 909 open-baffle stereo loudspeaker. This groundbreaking model delivered an extraordinary level of sonic replay, good enough to win plaudits the world over including Stereophile magazine’s coveted Golden Ear Award ’07.
Well, 2008 sees the launch of the next instalment in the Reference series success story. If there was one problem with the R 909 it was that not all audiophiles have a listening room large enough to accommodate and do justice to the demands imposed by the unique, open construction design of this dipolar giant. The new Jamo R 907 conclusively addresses that issue...
The Jamo development team’s brief for the R 907 was simple... to port the design and the acoustic characteristics of the R 909 into a new, less space-consuming speaker system. The result is a speaker that’s usefully smaller than its big brother but no less jaw-dropping in what it does...
Exhibiting the same sonic authority as the R 909, the R 907’s sound quality is incredibly open and dynamic, with extremely low distortion throughout the entire range. A highly-detailed midrange, with optimal voice reproduction, is combined with a firm, powerful and punchy bass unmatched by any other manufacturer’s mass-produced dipolar speaker.
Why is a speaker without a cabinet a good thing? Because boxed speakers suffer inherent compromises. While they allow deep bass to be generated boxes also resonate, something that affects dynamics and precision.
Room modes and reflections also place further restrictions on where you can place a loudspeaker but getting rid of the box enclosure should, in theory, allow you to create an ideal loudspeaker. The R 907 suggests, as the R 909 did, that there’s an awful lot of truth in that
The R 907... in detail
Fitted with two 305mm/12in woofers, a 140mm/5½in midrange and a customised 25mm/1in DTT (Decoupled Tweeter Technology) tweeter, the three-way R 907 employs a 43mm/1.7in thick baffle with a complex 7-layer lacquered multi-ply construction, a testament to this Danish company’s immense experience with traditional woodworking skills.
The 52.4kg/115.5lb speaker stands 119cm/46.8in high (the R 909 is 128cm/50.2in high) and is anchored by a substantial 23kg/50.7lb cast-iron plinth with double 5x60mm/0.19x2.4in braces to give additional stability.
The large bass drivers employ high quality open magnesium baskets plus lightweight paper cones with a polyurethane suspension. Paper cones may not be fashionable in some circles but they start/stop moving incredibly quickly and can reach very deep, as proven by the 380mm/15in versions in the R 909.
The midrange driver of the R 907 is build around the same type of Hard Conical Cone (HCC) with virtually flat frequency response well beyond the cross-over-frequency, which allows for a smooth and unobtrusive integration.
Although the magnet-system does not reach the same kind of sophistication it is nevertheless one of the lowest distortion drivers in this high-end-class.
Beyond those frequencies responsibility falls to an enhanced version of Jamo’s DTT (Decoupled Tweeter Technology) tweeter. DTT, a signature Jamo technology, prevents unwanted cabinet resonances reaching the tweeter by placing it in its very own suspension system... push the tweeter surround and it flexes under your fingers.
This hi-tech unit features a textile dome that’s coated several times, augmented with Jamo’s WaveGuide to dramatically reduce distortion. A double-damped chamber behind the magnet system is equipped with an anti-resonator plug to all but eliminate turbulence.
Last, but not least, a relatively simple crossover (1st and 2nd order) employing ClarityCap foil capacitors and air-coil inductors separates incoming audio signals and directs them to the appropriate drive units.
With such attention to detail and craftsmanship it’s no surprise that the result sounds amazing. Bass is firm and deep, the midrange crystal-clear and high-frequency detail precise and unmuddied. Coloration and reverberation are conspicuous by their absence.
As with the R 907 our intention was simple: to give owners the most direct access possible to an enriching musical experience that’s as close as possible to the ‘live’ event... but in a more room-friendly package than before. We think our new ‘baby’ achieves exactly that.
Back in 2006 Jamo redefined the state of the art in loudspeaker design with the launch of the breathtaking R 909 open-baffle stereo loudspeaker. This groundbreaking model delivered an extraordinary level of sonic replay, good enough to win plaudits the world over including Stereophile magazine’s coveted Golden Ear Award ’07.
Well, 2008 sees the launch of the next instalment in the Reference series success story. If there was one problem with the R 909 it was that not all audiophiles have a listening room large enough to accommodate and do justice to the demands imposed by the unique, open construction design of this dipolar giant. The new Jamo R 907 conclusively addresses that issue...
The Jamo development team’s brief for the R 907 was simple... to port the design and the acoustic characteristics of the R 909 into a new, less space-consuming speaker system. The result is a speaker that’s usefully smaller than its big brother but no less jaw-dropping in what it does...
Exhibiting the same sonic authority as the R 909, the R 907’s sound quality is incredibly open and dynamic, with extremely low distortion throughout the entire range. A highly-detailed midrange, with optimal voice reproduction, is combined with a firm, powerful and punchy bass unmatched by any other manufacturer’s mass-produced dipolar speaker.
Why is a speaker without a cabinet a good thing? Because boxed speakers suffer inherent compromises. While they allow deep bass to be generated boxes also resonate, something that affects dynamics and precision.
Room modes and reflections also place further restrictions on where you can place a loudspeaker but getting rid of the box enclosure should, in theory, allow you to create an ideal loudspeaker. The R 907 suggests, as the R 909 did, that there’s an awful lot of truth in that
The R 907... in detail
Fitted with two 305mm/12in woofers, a 140mm/5½in midrange and a customised 25mm/1in DTT (Decoupled Tweeter Technology) tweeter, the three-way R 907 employs a 43mm/1.7in thick baffle with a complex 7-layer lacquered multi-ply construction, a testament to this Danish company’s immense experience with traditional woodworking skills.
The 52.4kg/115.5lb speaker stands 119cm/46.8in high (the R 909 is 128cm/50.2in high) and is anchored by a substantial 23kg/50.7lb cast-iron plinth with double 5x60mm/0.19x2.4in braces to give additional stability.
The large bass drivers employ high quality open magnesium baskets plus lightweight paper cones with a polyurethane suspension. Paper cones may not be fashionable in some circles but they start/stop moving incredibly quickly and can reach very deep, as proven by the 380mm/15in versions in the R 909.
The midrange driver of the R 907 is build around the same type of Hard Conical Cone (HCC) with virtually flat frequency response well beyond the cross-over-frequency, which allows for a smooth and unobtrusive integration.
Although the magnet-system does not reach the same kind of sophistication it is nevertheless one of the lowest distortion drivers in this high-end-class.
Beyond those frequencies responsibility falls to an enhanced version of Jamo’s DTT (Decoupled Tweeter Technology) tweeter. DTT, a signature Jamo technology, prevents unwanted cabinet resonances reaching the tweeter by placing it in its very own suspension system... push the tweeter surround and it flexes under your fingers.
This hi-tech unit features a textile dome that’s coated several times, augmented with Jamo’s WaveGuide to dramatically reduce distortion. A double-damped chamber behind the magnet system is equipped with an anti-resonator plug to all but eliminate turbulence.
Last, but not least, a relatively simple crossover (1st and 2nd order) employing ClarityCap foil capacitors and air-coil inductors separates incoming audio signals and directs them to the appropriate drive units.
With such attention to detail and craftsmanship it’s no surprise that the result sounds amazing. Bass is firm and deep, the midrange crystal-clear and high-frequency detail precise and unmuddied. Coloration and reverberation are conspicuous by their absence.
As with the R 907 our intention was simple: to give owners the most direct access possible to an enriching musical experience that’s as close as possible to the ‘live’ event... but in a more room-friendly package than before. We think our new ‘baby’ achieves exactly that.
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October 2008
Delivering flagship standard sound quality from in-wall speakers is a challenge, but Jamo believes it has achieved just that with its new Concert-series derived Jamo IW 827 LCR.
Drawing on the same technologies as that have been used to such devastating effect in our award-winning Concert C 80 series the IW 827 LCR is specifically designed for LCR use, meaning that the same speaker can used for Left, Center and Right channel duties in a surround sound system.
As you might have surmised the IW 827 LCR is equipped with optimized drivers hailing from the Jamo C 800 series and therefore makes use of all Jamo’s core technologies. These include Decoupled Tweeter Technology (DTT), WaveGuide, Hard Conical Cones (HCC), Active Impedance Correction (AIC) and solid aluminum woofer/midrange Centre Plugs.
The IW 827 LCR is a 2½ way system with a 180mm/7in woofer positioned above a 25mm/1in tweeter while a 180mm/7in woofer/midrange sits at the bottom. This particular layout ensures great vertical dispersion of sound without the inherent midrange cancellation effect that usually accompanies a regular 2-way LCR woofer-tweeter-woofer layout.
As a result of the layout, with the woofer above and the woofer/midrange below the tweeter, combined with the clever crossover design, the optimal listening angle of the IW 827 LCR is directed slightly downwards. What this means is that the speaker can be placed next to a flat screen TV or otherwise relatively high on the wall while maintaining a perfect performance at the listening height when seated.
To avoid using an inconveniently large enclosure, the optional sealed back-box has been divided in two separate but identical sealed boxes, both lined with damping material. One box surrounds the upper woofer while the other takes care of the lower woofer/midrange. The physical separation means that there’s much less chance of mutual interference between low and mid frequencies.
To ensure the highest sound quality the crossover is equipped with carefully selected high-grade components, carefully positioned and mounted on a thick fiberglass PCB (printed circuit board). Metalized polypropylene film capacitor and metalized film resistors are used in the high-frequency circuit, allowing the tweeter to deliver a crystal clear high frequency reproduction. A low DCR air-core inductor type is used for the woofer/midrange giving low disto | | |
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