HiFi-PA 8.2 CC   Shelf speaker as in Hobby Hifi 2-3/2025

Technical data
  • impedance: 4 Ohm
  • sensivity (2,83V/1m): 87 dB
  • size (HxWxD): 580 x 330 x 280 mm
  • frequency range (-8dB): 40 - 23000 Hz
  • crossover frequency(s): 2000 Hz
  • speaker type: bass reflex

HiFi-PA 8.2 CC is a two way compact speaker.

HiFi-PA 8.2 CC is a bass-reflex cabinet loudspeaker with drivers of Celestion .

The kit is delivered with the following drivers:
- a Celestion CDX1-1446 + Celestion H1SC-8050 horn with driver
- a Celestion CF0820BMB woofer

The loudspeaker has been developed by Bernd Timmermanns.

The crossover consists of:
- a 3rd order high-pass filter (18 dB per octave slope) for the tweeter.
- a 3rd order low-pass filter (18 dB per octave slope) for the woofer.

The frequency response of this speaker is nearly linear.

The decay spectrum (waterfall spectrum) shows a decelerated swing-out behaviour in the mid-range.

At medium volume, i.e. 90 dB at 1 m, the nonlinear distortions are below 1% above 100 Hz.

An excerpt from the Hobby HiFi review

Conclusion of the magazine Hobby HiFi:

Our kit consists of

  • Celestion H1SC-8050 Horn Plastic, Screw fastening
  • Celestion CF0820BMB, 8 Ohm
  • Celestion CDX1-1446, 1.4 inch-PETP-Driver
  • 0,5x PE sealing tape, 5x2 mm, 7.5 m
  • 0,5x Damping Sonofil 100 x 35 cm for 20 litres
  • 0,5x Audaphon Damping 10, 970 x 470 mm, adhesive
  • Binding Post PK31, gold plated (one pair, red and black)
  • 2m Speaker cable 2x1.5 mm2, transparent
  • 1,5x Allen wood screws, black, 5x30 mm, 8 pieces
  • Plan for DIY kit

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

  • Audaphon MKT CAP 1.5 μF / 160 Vdc
  • Audaphon MKT CAP 5.6 μF / 160 Vdc
  • Audaphon MKT CAP 15 μF / 160 Vdc
  • JB, electrolytic capacitor, bipolar, 220 μF/50 Vdc
  • JB, electrolytic capacitor, bipolar advanced, 68μF / 50 Vdc
  • JB, electrolytic capacitor, bipolar advanced, 22μF / 100 Vdc
  • Mundorf air core coil L140, 0.56 mH/0.20 Ohm
  • 0.7 mm air core coil, 0.68 mH/0.70 Ohm
  • Mundorf H core coil H71, 3.3 mH/0.47 0hm
  • Mundorf H core coil H71, 15 mH/1.15 0hm
  • Mundorf H core coil H100, 1.5 mH/0.17 0hm
  • Metal-oxide resistor, 10W 5.6 Ohm (green-blue-gold)
  • 3x Metal-oxide resistor, 10W 6.8 Ohm (blue-grey-gold)
  • Metal-oxide resistor, 5W 5.6 Ohm (green-blue-gold)

Kit without cabinet, price per speaker   EUR 328,00 excl. VAT: € 275.63 / $ 319.73

Kit with high-end crossover

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 Celestion CDX1-1446 + Celestion H1SC-805 are of type polypropylen (MKP) Audaphon MKP CAP Superior 400 V.

  • Audaphon MKP CAP Superior 1.5 μF / 400 Vdc
  • Audaphon MKP CAP Superior 5.6 μF / 400 Vdc
  • Audaphon MKP CAP Superior 15 μF / 400 Vdc
  • Audaphon MKT CAP 22 μF / 160 Vdc
  • JB, electrolytic capacitor, bipolar, 220 μF/50 Vdc
  • JB, electrolytic capacitor, bipolar advanced, 68μF / 50 Vdc
  • Mundorf baked varnish air core coil BL71, 0.68 mH/0.71 Ohm
  • Mundorf baked varnish air core coil BL71, 3.3 mH/1.75 Ohm
  • Mundorf baked varnish air core coil BL71, 15 mH/4.45 Ohm
  • Mundorf baked varnish air core coil BL140, 0.56 mH/0.20 Ohm
  • Mundorf baked varnish ferrite core coil BP125 1.5mH/0.27Ohm
  • Metal-oxide resistor, 10W 3.3 Ohm (orange-orange-gold)
  • 2x Metal-oxide resistor, 10W 5.6 Ohm (green-blue-gold)
  • Metal-oxide resistor, 10W 6.8 Ohm (blue-grey-gold)
  • Metal-oxide resistor, 5W 5.6 Ohm (green-blue-gold)

Kit with high-end-crossover without cabinet, price per speaker   EUR 393,00 excl. VAT: € 330.25 / $ 383.09

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).

  • Audaphon MKT CAP 47 μF / 160 Vdc
  • 0.7 mm air core coil, 0.10 mH/0.27 Ohm
  • ceramic resistor 8.2 Ohm/20 Watt

Price per impedance correction for one speaker, to be mounted on a small wooden board.     EUR 20,82 excl. VAT: € 17.50 / $ 20.30

universal PCB

If you prefer to mount the crossover components on a 159 x 127 mm universal PCB instead on wood:
Universal PCB RA160, order no.. str-RA160, price per unit:   EUR 5,90 excl. VAT: € 4.96 / $ 5.75
We recommend one board per kit (two boards for a speaker pair)


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