GHP Monitor a monitor with Seas Excel drivers as in Hobby Hifi 2/2008

GHP-Monitor aus Hobby HiFi 2/20MTL
Technical data:
- size (HxWxD): 335x200x280 mm
- impedance: 6 Ohm
- crossover frequency: 1.8 kHz
- sensitivity: 82.5 dB (2.83V/1m)
- frequency range (-3dB): 53 - >40 000 Hz
Compact shelf loudspeaker with excellent sound quality. The GHP Monitor comprises a Seas Excel tweeter T29 AF001 with aluminium / magnesium diaphragm and an Excel W18 E001 bass driver with magnesium diaphragm.

The term GHP denotes "Geschlossene Bauweise mit Hochpass" in German, which means "sealed cabinet with high pass". Here you can find some theory about high pass.

Excerpt from the review in Hobby HiFi:
"For the listening test we also included the 18 inch subwoofer Sub Zero, featured in Hobby HiFi 5/2007." ... "The first listening session still took place without bass support. Here, the compact monitor proved to be quite convincing on its own. Every type of music sounds unbelievably natural and almost detached from the loudspeakers. Width and depth are a spot on, even the finest details are depicted meticulously. But the most amazing is the bass: bone dry and with breathtaking pace. Obviously, the lowest bass is missing. A large church organ or a double bass won't sound as powerful as coming from low bass capable loudspeakers. But the dynamics are extraordinary. One would believe that only large floorstanding loudspeakers are capable of delivering such power. Considering that this is a five litre loudspeaker, there is only one word describing what happens below 100 hertz: astonishing. And when the perfectly adjusted to Sub Zero was added, it became obvious again, how valuable a bass module is for any type of music. The church organ and the double-bass sounded now as they should, a rare experience. The sound became altogether larger and wider. The spatial arrangement of vocals and instruments remained intact, but with a lot more depth. ...

Our kit contains:

- Excel T29 AF001
- Excel W18 E001
- 2.5 x Bitumex
- 1/2 Bondum 800
- 1 Pack Polyester Dämmstoff
- self-adhesive sealing foam tape
- 12 screws Pan 4 x 20
- 2 gold plated binding posts
- 2 metres cable 2 x 2.5 mm2
- the building instruction

- a large universal
  PCB for
  the crossover components
- 2.2 mH air core coil/1.4 mm wire
- 0.27 mH air core coil/0.7 mm wire
- 5.6 mH core coil, < 0.4 Ohm
- 0.68 mH air core coil/0.7 mm wire
- 0.15 mH cfc air core coil
- 0.1 mH air core coil/0.7 mm wire
- 2x 10 uF MKP foil capacitor
- 2x 3.3 uF MKP foil capacitor
- 470 uF ELCO etched, plus 10 uF MKP in parallel
- 0.22 uF MKP foil capacitor
- 6.8 uF MKP foil capacitor
- 0.47 Ohm MOX4 resistor (yellow-purple-silver)
- 15 Ohm MOX4 resistor (brown-green-black)
- 5.6 Ohm MOX10 resistor (green-blue-gold)
- 3.9 Ohm MOX4 resistor (orange-white-gold)

Price per speaker without cabinet EUR 635,00 excl. VAT: € 533.61 / $ 602.98

GHP Monitor with high-end crossover

For a particularly high quality crossover we recommend and supply the following components:
- 2.2 mH copper foil coil with > 3 mm2 diameter
- 0.27 mH baked varnish coil / 0.9 mm wire
- 5.6 mH core coil, < 0.4 Ohm
- 0.68 mH baked varnish coil / 0.9 mm wire
- 0.15 mH cfc air core coil
- 0.1 mH baked varnish coil / 0.9 mm wire
- 2x 10 uF MKP foil capacitor
- 2x 3.3 uF MKP foil capacitor
- 4x 100 uF + 47 uF ELCO, non-etched
  + 33 uF MKP in parallel
- 0.22 uF MKP foil capacitor
- 6.8 uF MKP foil capacitor
- 0.47 Ohm MOX4 resistor (yellow-purple-silver)
- 15 Ohm MOX4 resistor (brown-green-black)
- 5.6 Ohm MOX10 resistor (green-blue-gold)
- 3.9 Ohm MOX4 resistor (orange-white-gold)

Price per speaker without cabinet EUR 854,00 excl. VAT: € 717.65 / $ 810.94

Impedance correction for valve amps

For valve amps we supply an impedance correction. Since here the quality of the components doesn't influence the sound we offer only one version. (Upon request a high-end version is nevertheless supplied)
- the impedance correction, to be mounted on wood, contains:
- 0.33 mH air core coil / 0.7 mm
- 33 uF ELCO, non-etched
- resistor 8.2 Ohm, 20 Watt

Price per speaker: EUR 10,00 excl. VAT: € 8.40 / $ 9.50

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