Sunray / T1

After the Sunray, what could possibly have led us to embark on building the T1? The answer is as simple as the question is justified: We were eager to raise the bar that we had set for ourselves even higher. To that end, the T1 consists of … a Sunray, that was modified for exclusive use with this system, however, by mounting a breathtakingly expensive pure silver crossover and accompanying it with the mighty sub-bass extender, that explores hitherto uncharted territory, even for a Sunray. A dream, and surely bound to remain no more than that for most people. Then again, passion and a deep aversion for all compromises don't ask for justification, and that is precisely why the T1 saw the light of day.


The T1 contains:

  • 1 pair T1-Sunray: Sunray with "cost-no-object" pure silver cross-over
  • 1 pair T1-Subtower: bass extender with unique DBCD-technology (DUAL BASS COMPRESSION DESIGN) with 3 times adjustable VarioGain and Aerotune-System
  • 1 x T1-LPX: active crossover for driving the T1-Subtowers and / or the bass modules active

    passive mode:

    The T1 is a perfetly balanced passive speaker. With its VarioGain and Aerotune, for both Subtowers and Sunray, it can be adjusted easily to the most rooms. A simple and perfect solution in our opinion. If the room or the personal taste requires even more flexibility, then one can use the LPX.

    active mode:

    This mode we do recommend for critical rooms, and for the best results. One can adjust the Subtowers and bass modules of the Sunray in a way higher range, in level and frequency. One needs 2 or 4 channels more for that. For detailed explanations we will be answer all your questions. Feeel free to download the schematics here as PDF:


  • 3 seperated self-adjusting modules for high-midrange and bass: 2 x TIDAL-NV-bass modules, 1 x TIDAL-ND-RMD high-midrange modules, cabinet-walls up to 5" thick, optimized internal aerodynamic conditions
  • step response controlled point-source-centred bass reproduction, the bass is beeing reproduced around the high-midrange source. Harmonic excitation of room-modes for a very even and symetrical first reflexion in the room - therefore very uncrtitical to place even in smaller rooms, quasi-infinate front-baffle via a "pneumatic-airwall" by phaseshift-controlled submodules
  • 4 x 220 mm (9") Thiel & Partner (Accuton) woofer with black ceramic-diaphragm, exclusive made for TIDAL
  • 2 x 173 mm (7") Thiel & Partner (Accuton) woofer with black ceramic-diaphragm, exclusive made for TIDAL
  • 1 x 30 mm (1,2") Thiel & Partner (Accuton) tweeter with black diamond-diaphragm, exclusive made for TIDAL
  • AEROTUNE-System: 2-times adjustable, for flexible and uncritical in-room placement and bass quality
  • VarioGain: 3-times adjustable level and cut off frequency
  • adjustable diamond-tweeter curve (hard room-refections / soft room-reflections)
  • mechanical and pressure isolated passive crossover network laid out with ultra low tolerance components
  • exclusive use of unique pure silverfoil-capacitors in PIOCAST-technology, silver-carbon-resistances and PIOCAST-aircore-inductors.
  • extremly linear frequency response, excellent step response, optimised phase and group delay
  • massive silver/goldplated soft-copper 100-ampere binding posts with removeable heads for fullsize-eylets, spades and banana's, wired internally with finest coaxial and silvercable
  • single-wiring / passive bi-amping / active bi-amping possible 


  • 2 seperated bass modules in RMD-technology
  • 2 x 270 mm woofer with black aluminum diaphragm (special made for TIDAL with long excurtion and a very impulse response, exclusively from SEAS Excel)
  • DBCD (DUAL BASS COMPRESSION DESIGN) technology: face-to-face mounted woofers with a defined distance to each other and an internal phase correction do compress the air directly between the diaphragmes and accelerate the impulse response in combination with a very deep F3
  • very even room mode excitement, therefore uncritical in-room placement
  • AEROTUNE-System: 3-times adjustable F3-curve
  • VarioGain: 3-times adjustable level and cut off frequency
  • plug & play mechanism with internal connection of the two drivers without seeing any cable

  • active Stereo-cross over
  • frequency and level adjustable for the Subtowers
  • frequency and level adjustable for the Sunray bass modules
  • pure discrete designed dual mono topology
  • 2 x dual mono powersupply with toroid transformer
  • 1 x separate toroid transformer powersupply for the control unit
  • 80 000µF stabilisation capacity, ultra fast response with high-grade-long-life-capacitors
  • filtering and regulation system
  • two-stage EMC-filter
  • 1 Stereo-input RCA & true XLR
  • 1 Stereo-output RCA & true XLR: Lowpassfilter T1-Subtower
  • 1 Stereo-output RCA & true XLR: Lowpassfilter Sunray bass-module


  • 4 professional ATA-flightcases on wheels
  • exclusive stainless steel isolators, stand-bars made from polished aluminum, microfibre-cleaning cloth, 4 complete sets Sunray-Isolator feet and all accessory parts for assembling it
  • owners manual book with its personal measurement protocols
  • serial cabinet finish, high gloss polished piano lacquer: midnight black
  • optional veneer-group 1, high gloss polished woods in piano lacquer: tiger-eucalyptus, curled-bubinga, rose-bubinga
  • optional veneer-group 2, high gloss polished woods in piano lacquer: african pyramided mahogany, ebony-macassar
  • cabinets can be mixed in black piano finish and veneers
  • other wishes or veneers: on request


  • drivers, each speaker : 4 x 222 mm woofers, 2 x 173 mm midrange-woofers, 1 x 30 mm tweeter
  • dimensions: 199 cm x 33 cm x 60 cm
  • weight: 1.150 lbs. / 520 Kg (with packing)


  • drivers, each speaker : 2 x 260 mm woofers
  • dimensions: 199 cm x 39 cm x 39 cm
  • weight: 980 lbs. / 445 Kg (with packing)


  • dimensions: 44 cm x 13 cm x 39 cm
  • weight: 71lbs. / 32 Kg (with packing)

  • Drivers: 4 x 11", 8 x 9" woofers, 4 x 7" midrange-woofers, 2 x 1,2" tweeters
  • nominal power input: 200 / 400 VA
  • nominal impedance: 4-5 Ohm
  • frequency response: very linear, F3 = 18 Hz
  • recommended amp input: We recommend quality instead quantity. Real 30 Watt at 8 Ohm are ok for normal listening levels (in rooms up to 40-60m²). It is most easy to drive and plays even at lowest levels "full and rich". 
    To use the whole dynamic range of it and listening complex music also from time to time very loud we recommend 250 watts at 8 ohm.
  • efficiency: since several unrealistic numbers of competitors we don't want to confuse clients by comparing non-saying numbers on paper. Therefore it is: "Good efficiency, very easy to drive also with tube amps / SET'S".
  • weight: 2.130 lbs. / 965 Kg (the whole system)
  • 30 mm ceraphite tweeter
  • 2x173 mm BBC wofer
  • 4x220 mm BBC wofer
  • CIC, Aerotune, varioterminal, active or passive adjustment
  • RMD- Cabinet, Unopulse x-over, pure silver PIO Cast parts
  • T1 – system: T1-subtower in DBC- Design, 4x11” woofer, TIDAL LPX active x-over.
  • handpolished black piano lacquer/polished veneers
  • Incl. ATA- Flightcase and isolatorfeet system
  • Sunray: 33 cm x 60cm x 202 cm
  • T1-Sub: 39 cm x 39cm x 202 cm
  • Weight: 510kg/980kg (pair Sunray/ pair T1 )