The speakers are based on a 6-inch woofer from Peerless Acoustic Engineering, teamed with a silk dome tweeter from Vifa in Denmark. Each kit has a pair of woofers and tweeters, with assembled 2-way crossover networks, plastic tuned ports, bonded acetate fibre (BAF) wadding and precision cut and routed panels of MDF (Medium density fibreboard) to make two enclosures.

The two drivers are high quality units which are well matched in sensitivity and overall balance and will make a very good pair of speakers in an average-sized listening room, either as stereo pair or as the front speakers in a home theatre system.

They can be used as bookshelf speak-
ers or be mounted on stands which, like the kits themselves, are available
from theloudspeakerkit.com

In more detail, the woofer is a 165mm (6.5-inch) unit with low-loss synthetic rubber roll and a double magnet system to provide magnetic shielding. The tweeter is the Vifa D27TG4506, a 27mm silk dome unit with a ferrofluid-damped voice coil. It is not magnetically shielded. This means that you will not be able to use the finished speakers in close proximity to CRT video monitors.

Fig.1: the crossover network has impedance equalisation for the woofer (22Ω + 6.8μF).Note the tweeter polarity: it its reversed, as shown in this diagram.

The 2-way crossover network provides attenuation slopes of 12db/octave for both the woofer and tweeter. Crossover frequency is 2.5kHz. Both the inductors are air-cored, meaning that distortion due to any core saturation will not occur. The 8.2μF tweeter coupling capacitor is a polypropylene type while the woofer crossover capacitors are bipolar electrolytics. The circuit of the crossover is shown in Fig.1.