Hi everyone - first post here, but have recently become fascinated with vintage Altec drivers, namely the 604. Wondering if anyone ever built a cabinet for 604s that would be placed inside a bookshelf with any success? From research, I realize that is not practical for most due to the physical size of the cabinet needed. However, I have custom built bookshelves (20" wide x 24" deep x as high as needed) that are quite large and already holding my Audio Note AN-E/SPe HE speakers on slide-out 500lb shelves. See attached pictures.

Since the AN are rear ported and like corners, their capabilities are not being maximized - even so, they still sound quite nice. From the mastering studio pictures seen on this forum, the 604s appear to be built into the walls in some applications with a vent/port in the front, which gave me the idea. My amp is a 10W Shindo, and since Shindo also mfgs a 604-based speaker, there must be pretty good synergy.

My plan would be to utilize GPA 604-8H-III drivers, included crossover, and build a suitable sized cabinet according to GPA specs of 9 cu ft and 45.5 Hz tuning. To fit within my bookshelf, the cabinet size would be approx 19"W x 22"D x 48"H, approximately 9.5 cu ft to offset internal bracing. Cabinet material would be the best 3/4" plywood I can find.

The listening room doubles as a family room, with floor space being premium and WAF definitely a consideration. The room has 12 ft ceilings, is ~20 x 30 ft deep with speakers on the 20 ft wall. The rear of the listening room has a 15ft opening into another large 20 x 20 room.

Any thoughts as to whether or not this might work? Waste of time? Thanks in advance...



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