Ground Sound system 1503 with digital crossover and 3x 600 Watt continuous as in Hobby HiFi 5/2007

Ground Sound
Technical data
- digital crossover
- peak output: 3x 1090 W
- rated output 3x 600 W into 4 Ohm
- rated output 3x 330 W into 8 Ohm
- frequency range (-1dB): up to 40 kHz
- crossover frequencies: adjustable
- size (HxWxD): 41 x 25 x 41 cm

Verdict by Hobby HiFi 5/2007

"Loudspeaker "activation" by means of using digital crossover technology offers solutions that are unthinkable using passive crossovers. The effect is absolutely positive. The 1503 system is flexible, mechanically solid and stable under all loads. Sure, it's not cheap but it's certainly value for money."

After some research and many comparisons we also believe Ground Sound to be one of the best systems: it's absolutely solid, stable and easy to handle.

The Ground Sound system 1503 was published in Hobby HiFi, and can be evaluated in our show rooms.

Connection of the Ground Sound system is as follows:Ground Sound 1503

The input of the Ground Sound
(left) needs to be connected to the
pre out of the amplifier

The loudspeaker outputs
should be connected directly (possibly with fuses)
to the loudspeakers

For programming
a PC
has to be connected
to the programming input.

Therefore, a passive crossover and a main amp is not needed. Active amplification is - with regard to versatility and signal quality far superior to a passive solution with passive crossover.

Ground Sound: main amp with 300 Watt per speaker and crossover

- the 3 way complete kit 603 with all required components and 3 x 300 W
Price per speaker: on request

- the 2 way complete kit Chassis 1502 with all required components and 2 x 300 W
Price per speaker: on request

Ground Sound: Assembled 3 channel amplifier

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Two amplifier bolides consists of two Ground Sound Chassis 603 with
- digital crossover
- 3 units stereo amplifier with 300 Watt Sinus each.
the amplifiers are only sold together.

The two amplifiers are as goog as new, they have been on some exhibitions.


  • Front made of aluminium in silver
  • Einschaltautomatik
  • power supply with Neutrik Powercon
  • speakers are connected with 8 pole Neutrik Speakon
  • digital crossover DCN 23 (3 channel DSP)
  • 3 x 300 Watt power amplifier (PA3CC) in each amplifier cabinet
  • Dimensions HxWxD: 420 mm x 260 mm x 270 mm
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Mitgeliefertes Zubehör:
  • 2 x 1,8 m Kabel NL8 Speakon Stecker auf Oehlbach Banana Tubes
  • 2 x Stromkabel mit Neutrik Powercon Stecker

EUR 3999,-
- not available in silber
per amplifier pair (for both cabinets)