Indus is a two way compact speaker.
Indus is a bass-reflex cabinet loudspeaker with drivers of Audaphon and Mark Audio.
The kit is delivered with the following drivers:
- a Audaphon AMT 1i air motion transformer (ribbon-tweeter)
- two Mark Audio Pluvia 11 Gen 1 woofers
The loudspeaker has been developed by Dennis Frank and Daniel Gattig.
The crossover consists of:
- a 2nd order high-pass filter (12 dB per octave slope) for the tweeter.
- a 2nd order low-pass filter (12 dB per octave slope) for the woofer.
The frequency response of this speaker is perfectly linear.
The decay spectrum is perfect.
At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are below 0,3% above 500 Hz and doesn't exceed 0,6% at 95 dB at 1 m between 300 and 15000 Hz.
"And the Indus is so much fun that one likes to exhaust those 95 decibels (and more) from time to time. The bass range is not ultra-deep - but it can be if you dare to move the speakers a little closer to the back wall. With the tweeter at ear level, you can achieve an extremely precise and very realistic spatial image, which, in combination with the lack of any colouration, also recommends the Indus as a work device for the home or professional recording studio. The tweeter with its dynamics is beyond all doubt, but the two Markaudios with their metal membranes and plenty of volume behind them are more than equal partners."
the crossover components (right),
to be mounted on a small wooden board.
Kit without cabinet, price per speaker EUR 790,00 excl. VAT: € 663.87 / $ 783.36
The high-end kit is delivered with baked varnish air core coils on important parts of the crossover for minimizing microphonic effects. - The current flow through the coil creates a magnetic field which sets the reel of wire in motion. This motion induces a voltage in the coil which adds itself to the signal. The stiffer the reel of wire is, the less the signal will be altered. The capacitors for the Audaphon AMT 1i are of type polypropylen (MKP) Clarity-Cap CSA 630 V.
Kit with high-end-crossover without cabinet, price per speaker EUR 848,00 excl. VAT: € 712.61 / $ 840.87
If you want to use a valve amplifier with this speaker an impedance correction should be employed. In this case the component quality is less important; therefore, we offer only one kit (upon request higher quality components are available).
Price per impedance correction for one speaker, to be mounted on a small wooden board. EUR 14,40 excl. VAT: € 12.10 / $ 14.28
If you prefer to mount the crossover components on a universal PCB instead on wood
PCB 150x115 mm, tin plated, price per unit: EUR 4,70 excl. VAT: € 3.95 / $ 4.66
We recommend one board per kit (2 boards per speaker pair)
Measurements on this speaker