Flat Pack 29/3 is a three way wall-mounted speaker of high quality.
Flat Pack 29/3 is a closed-cabinet loudspeaker with drivers of Mundorf, Wavecor and SB Acoustics.
The kit is delivered with the following drivers: - a Mundorf AMT U110W1.1 air motion transformer (ribbon-tweeter) - a Wavecor WF182CU13 midrange / bass driver - a SB Acoustics SW26DBAC76-4 woofer
The loudspeaker has been developed by Bernd Timmermanns.
The crossover consists of: - a 2nd order high-pass filter (12 dB per octave slope) for the tweeter. - a band pass consisting of a 3rd order high pass filter (18 dB per octave slope) and a 2nd order low-pass filter (12 dB per octave slope) for the mids-woofer. - 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 as shown in the waterfall diagram is exemplary, free of any disturbing resonance.
At 90 dB and 1 m, nonlinear distortions are below 0,3 % almost everywhere above 100 Hz.
the crossover components (right), to be mounted on a small wooden board.
Kit without cabinet, price per speaker EUR 1107,00 excl. VAT: € 930.25 / $ 1013.97
The high-end kit is delivered with Mundorf Hepta coils and baked varnish air core 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. . The capacitors for the Mundorf AMT U110W1.1 are of type Mundorf EVO Silver Gold Oil.
Kit with high-end-crossover without cabinet, price per speaker EUR 1484,00 excl. VAT: € 1247.06 / $ 1359.29
The high-end kit is delivered with copper foil coils and 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 APR 1.0 are of type polypropylen (MKP) ClarityCap CSA with 630 V.
Kit with high-end-crossover without cabinet, price per speaker EUR 1222,00 excl. VAT: € 1026.89 / $ 1119.31
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 23,60 excl. VAT: € 19.83 / $ 21.62
If you prefer to mount the crossover components on a 240 x 165 mm universal PCB instead on wood: Universal PCB RA240, order no.. str-RA240, price per unit: EUR 8,60 excl. VAT: € 7.23 / $ 7.88 We recommend one board per kit (two boards for a speaker pair)
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