GRUENSCH GRAND REFERENCE

– Central planar unit as a virtually zero mass Time-Coincident Point Source with dipole technology from the medium low mid-tone range onwards – consisting of two mid-tone planar magnetic transducers, one mid-high planar magnetic transducer and one ribbon super-tweeter – in a special open baffle setting

·         GRUENSCH OPEN BAFFLE – Sophisticated open baffle with special rear sound guidance elements facing outwards for optimised, natural, diffuse sound field

·         GRUENSCH SINGLE DRIVER WIDE RANGE CONCEPT- Broadband concept – The most important frequency ranges from the medium midrange to 15 kHz (more than four octaves) is reproduced absolutely seamlessly by a single broadband planar magnetic transducer.

·         TIME COINCIDENT SPEAKER CONCEPT – Time accurate impulse and music reproduction

·         TIME COHERENT CROSSOVER – Time and phase coherent first-order (6dB/octave) acoustic attenuation slopes

·         TIME-ALIGNED IN PHASE DRIVER CONFIGURATION – Time-aligned, time coherent driver configuration – The aligned drivers are all connected in positive phase so that they push and pull in unison

·         SYMMETRICAL VERTICAL DRIVER ARRAY / POINT SOURCE FOCUS – Mirror-symmetrical vertical drive unit array as quasi-point source

·         Driver Complement: 1x Ribbon-Supertweeter, 1x broadband 20cm (8”) Planar Magnetic Transducer (midrange/treble), 2x 25cm (10”) Planar Magnetic Transducer (midrange), 2x 22cm (8.5”) Bass, 1x 38cm (15”) Sub-bass, selected in pairs

1) Speaker drivers with minimum mechanical losses 2) Ideal, direct operation of the mid-high planar magnetic transducer without series resistor 3) Crossover topology with minimum time delay (no time smear) and use of particularly low-loss components

·         GRUENSCH SEALED ENCLOSURE – Sealed enclosure in bass and sub bass range for best impulse reproduction with optimized pressure conditions and prevention of backwave colorations

·         Active 15“ Sub-bass – Active 38 cm (15”) sub-bass in the frequency range from 15Hz to 50Hz with separate electronic crossover and external power amplifier.
(Required separate external poweramplifier not included in the scope of delivery)

·         Ultra Solid and Inert Cabinet – Exceptionally solid, multilayer, pressure- and resonance-optimized cabinet with extensive internal bracing

·         GRUENSCH PURE SOUND WAVE – Self-reflection-free sound radiation thanks to special design of cabinet and speaker driver environment.

·         LINEAR OCTAVE-TO-OCTAVE RADIATION – Evenly and proportionately increasing membrane surface area to low frequencies

·         Large Membrane Surface Area – Very large total speaker membrane surface area, especially in the mid and high frequency range

·         GRUENSCH STEALTH CABINET – Acoustically „invisible” cabinet with minimal acoustic signature

·         Extremely Tight Tolerances and Highest Precision – Strict pair selection of loudspeaker drivers and very accurate matching of left and right speakers.