IQ System One

Data

General

• Manufacturer: I.Q.
• Model: System One MK I / MK II
• Color: various woods as desired
• Dimensions: WxHxD
  • Subwoofer towers: 330 x 1230 x 350 mm
  • Satellites: 230 x 1000 x 280 mm
• Weight:
  • Subwoofer towers: 61 kg
  • Satellites: 33 kg / 21 kg
• Original price approx:
  • Satellites System.One.2: 3500,- Euro / pair
  • Subwoofer System.One.1: 6500,- Euro / pair
  • adaptive control with MKII (to prevent the voice coils from hitting the largest strokes): 2000,- Euro / pair

Technical Data

• Type of construction: Sub/Sat-System, closed
• chassis
  • Subwoofer towers "System.One.1" (MK I and MK II differ in amplifier electronics and bass control).
    • 3 x 260 mm cone polypropylene (Vifa P25WO-31-06 for MKI and P25WO-33-08 for MKII)
  • Satellites "System.One.2" MK I
    • 2 x 170 mm cone polypropylene (Vifa)
    • 1 x 25 mm dome tweeter titanium (Vifa)

Power handling satellites (nominal/music power): - / 160 Watt

• • Satellites "System.One.2" MK II
    • 1 x 180 mm cone chitin sandwich midrange driver (GIA 170-02/4)
    • 1 x 180 mm cone chitin sandwich bass driver (GIA 180-03/4, double magnet, long excursion)
    • 1 x 25 mm dome tweeter soft aluminium, anodised (SEAS 25 TAFC/D modified f. I.Q)
• Power handling satellites (nominal/music): 90 / 140 Watt
• Efficiency: 89dB (Satellites MK II).
• Power:
  • 400 Watt Subwoofer MK II

350 Watt Subwoofer MK I

• Frequency response
  • Subwoofer: 18 Hz (-3dB) - 90 Hz
  • Satellites: 50 Hz - 20,000 Hz
• Maximum sound pressure: 108 dB (1m)

• Crossover: 90 Hz / 2800 Hz (18dB)

• Impedance:
  • Satellites MK I: 6 Ohm (measured: AUDIO).
  • Satellites MK II: 3 Ohm / 2.7 kHz (measured: HIFI VISION)

Special features

• active bass control via dual voice coils and black box at MKII (developed by Swoboda)
• active bass control via acceleration sensor in bottom bass driver at MKI (licensed by ART)

Trivia

• XLR input jack at satellites from MKI was intended for later regulation of satellites, but never used.

Nomenclature: The manufacturer designated the combination of subwoofer and satellites with System.X, i.e. System.One for the large system, System.Two for the medium-sized system and System.Three for the small system. The subwoofers were designated with .1, the satellites with .2, i.e. System.One.1 for the large subwoofers and System.Three.2 for the smallest satellites. The MK-I version was developed by Mr. Karl-Heinz Fink, the MK-II version was developed by Mr. Manfred Diestertich, now with Audiophysic. The crossover modules of the two versions differ in their practicality in that the modules of the MK I version could be switched off. Thus it was possible to listen in the evening without subwoofer via the satellites in the full range. This is not possible with the MK II. Here you have to reconnect. In the MK II version of the subwoofer electronics there is a jumper that overrides the built-in filter. This means that the woofers of the System.One, -.Two and -.Three versions can be operated universally as subwoofers with an external woofer crossover or via an AV receiver.

Notes

Other models in the same series:

• System One
• System Two
• System Three

Pictures

• You can see the System.One MKII version by Manfred Diestertich with the SEAS tweeters, the newer power amps and the Chitin drivers.

• Here the combination of System.One MKII satellites and the System.Two subwoofers

Reviews

• Test result of the I.Q System.One MKII (with chitin membrane satellites) in HIFI-VISION:
  • "No question, their over-all qualities stamp I.Q's energy concert center as the reference in the truest sense of the word: precisely, the evaluation standard for judging loudspeakers."

• Test result of the I.Q System.One MKI (with polyprop satellites) in AUDIO:

91 points, reference class 5 ears

Links

• For service requests: info@IQSystemOne.de