Alhambra   Floorstanding as in Hobby Hifi 2/2016

Technical data
  • impedance: 4 Ohm
  • sensivity (2,83V/1m): 86 dB
  • size (HxWxD): 1120 x 190 x 325 mm
  • frequency range (-8dB): 32 - 20000 Hz
  • crossover frequency(s): 150 Hz
  • speaker type: bass reflex
Alhambra is a 2 way floorstanding speaker with fullrange speaker line-array consisting of three Mivoc fullrange speakers. Two small woofers situated opposite each other are in impuls compensated design.

Alhambra is a 2 way floorstanding speaker with fullrange speaker line-array consisting of three Mivoc fullrange speakers. Two small woofers situated opposite each other are in impuls compensated design. Alhambra has been developed by Bernd Timmermanns.

In Alhambra three Mivoc fullrange speakers FR358N form a line-array. Two small Mivoc subwoofers SWM68 are for the bass range.

The crossover consists of a 2nd order high-pass filter (12 dB per octave slope) for the fullrange array. A serial RCL notch filter and a parallel RCL are smoothing the frequency response. The woofers are connected to a 2nd order low-pass filter (12 dB per octave slope) with an parallel RCL.

Between 40 Hz and 10 kHz, the frequency response of this loudspeaker is nearly flat on axis. Above 10 kHz the loudspeaker shows a frequency rise on axis. The decay spectrum is perfect below 10 kHz. At low volume, i.e. 90 dB at 1 m, the nonlinear distortions are below 0.5% above 200 Hz.

Our kit consists of

  • 3x Mivoc FR 358 N
  • 2x Mivoc SWM 68
  • 2x Bass reflex tube HP70, 68x160 mm, black
  • Damping fleece MT Bondum 800 (30 x 50 x 2 cm)
  • 2x Damping Sonofil 100 x 35 cm for 20 litres
  • Binding Post PK31, gold plated (one pair, red and black)
  • 3m Speaker cable 2x2.5 mm2, transparent
  • 2,5x Pan screws 4x20 black, cross recess, 8 pieces
  • Plan for DIY kit

the crossover components (right),
to be mounted on a small wooden board.

  • Audaphon MKP CAP Superior 2.7 uF / 400 Vdc
  • Audaphon MKP CAP Superior 12 uF / 400 Vdc
  • Mundorf, electrolytic capacitor, etched, 180 uF/63 Vdc
  • Mundorf, electrolytic capacitor, etched, 220 uF/63 Vdc
  • Mundorf, electrolytic capacitor, etched, 330 uF/63 Vdc
  • Mundorf air core coil L50, 4.7 mH/3.777 Ohm
  • 0.7 mm air core coil, 0.10 mH/0.27 Ohm
  • 0.7 mm air core coil, 0.56 mH/0.55 Ohm
  • 0.7 mm air core coil, 15 mH/4,45 Ohm
  • Mundorf H core coil H100, 8.2 mH/0.54 0hm
  • Metal-oxide resistor, 10W 2.7 Ohm (red-purple-gold)
  • Metal-oxide resistor, 10W 3.9 Ohm (orange-white-gold)
  • Metal-oxide resistor, 5W 0.22 Ohm 5% (red-red-silver)
  • Metal-oxide resistor, 5W 2.2 Ohm (red-red-gold)
  • 2x Metal-oxide resistor, 5W 3.3 Ohm (orange-orange-gold)

Kit without cabinet, price per speaker   EUR 276,00 excl. VAT: € 231.93 / $ 266.72

Kit with high-end crossover

The high-end kit comes with electrolytic capacitors uneched instead of the etched type in series to the fullrange loudspeakers. Except the 8.2 mH coil the inductances are baked varnished coils 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.

Kit with high-end-crossover without cabinet, price per speaker   EUR 333,00 excl. VAT: € 279.83 / $ 321.81

Impedance correction

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 9,50 excl. VAT: € 7.98 / $ 9.18

universal PCBs

If you prefer to mount the crossover components on a 240 x 165 mm universal PCB instead on wood:
Universal PCB RA240, order no.. I-2767, price per unit:   EUR 7,60 excl. VAT: € 6.39 / $ 7.34
We recommend one board per kit (two boards for a speaker pair)


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