Simon MK2             Lab Results   Building Plan

The goal was to design a small monitor as part of a practical training. For high frequencies in the first version we used the Audaphon TWS 25/6. TWS 25/6 has been replaced by Seas TWS 27-6 in the recent MK2 version. For bass the affordable Tangband W4-655 SA is used.

One of our trainees - with the help of Dennis Frank - designed in February 2005 a bass reflex cabinet with a rear port. If requested the rear port could also replaced by two front slots of half the cross-section. The speaker may then be placed with the back to the wall.
Tangband W4-655

According to listening tests the Simon is an excellent performer.

The Simon shows the following characteristics:
- flat frequency response
- considering the size quite a low bass
- good spacing and locating
- neutral reproduction
- slim design
- high quality components with cfc coil and Mundorf Supreme CAPS

Technical Data

The Simon's lab results ....

The Simon kit contains:

  • 1 x Seas TWS 27-6 tweeter
  • 2 x Tangband W4-655 with gold colored phase plug
  • 1 x IT bass reflex tube HP50, 50x143mm, black
  • all crossover components,
      to be mounted on wood (right column)
  • 105 mm Terminal T105 with brass binding post, gold plated
  • 2 m cable 2x 1.5 mm2 diameter
  • 16 PAN screws, black
  • 0.5 Pack Polyester Dämmstoff
  • loudspeaker cable 2x1.5 mm2, red-black, 1 m
  • description and building plan
  • 1x 1.4 mm IT air core coil 0 56 mH / 0.22 Ohm
  • 1x 0.7 mm IT air core coil 0 15 mH / 0.32 Ohm
  • 1x 0.5 mm core coil 10 mH / 3.48 Ohm
  • 1x MKP capacitor 10uF / 400V
  • 1x MKP capacitor 8.2uF / 400V
  • 1x MKT capacitor 10uF
  • 1x MKT capacitor 3.9uF
  • 1x MKT capacitor 8.2uF
  • 1x MOX4 1.0 Ohm/4 Watt (brown-black-gold)
  • 1x resistor 3.3 Ohm/10 Watt

Price per unit without cabinet EUR 239,00 excl. VAT: € 200.84 / $ 216.91

If you prefer to mount the crossover components on a universal PCB instead on wood we recommend either 1 (components upright) or 2 per speaker:
PCB, non-tinned , Order No. I-8805017,     Price   EUR 4,70 excl. VAT: € 3.95 / $ 4.27

Home     Lab Results     Building Instruction