Bedroom Bookshelf Loudspeaker for late night listening
Description of this page
The Bedroom Bookshelf Loudspeaker is a compact two way acoustic suspension Bedroom Bookshelf mounted loudspeaker, built from the remains of the 'Sentinel' speaker and destined for late night listening in the bedroom. The acoustic performance is quite admirable and the size is ideal for placing on the bed head.
The Bedroom Bookshelf loudspeaker was created to investigate cone breakup on midrange drivers, and eventually become my preferred listening source in the bedroom. The speaker is virtually the top end of the old 'Sentinel' speaker with a different bass driver and a simplified crossover network. The cabinet is thoroughly braced and insulated. Crossover assembly was on a Jaycar CX-2605 Crossover PCB, using Jaycar off the shelf inductors and polypropylene capacitors.
After a period with a bare, unfinished cabinet I decided to practice my woodwork skills by replacing the front baffle, installing grilles and staining the cabinet. The results were worthwhile and produced a neat small loudspeaker with exemplary performance. They now have both the sound quality and the appearance of a high quality loudspeaker.
Originally the sound came out as rather thin sounding, seemingly lacking midrange. Significant improvement was made to the speakers by doping the cones - have a look at the sheen on the bass driver cones in the pictures. The speakers now have a clean musical sound, as I prefer. The bass response seems adequate for such a small speaker, and is quite effective for late night listening in the bedroom.
Circuit for the Crossover Network