Construction
The cabinet consists of 19 mm medium density fibreboard (MDF) or chipboard, stuck together as butt joints. Inside the speaker there are three reinforcing boards to prevent the cabinet resonating. Since the bass reflex tube can no longer be inserted through the bass speaker cut-out, due to the cabinet reinforcement, the base of the speaker is removable. To this end, a base and a frame mount are required. The frame is best manufactured from a board exactly the same size as the cross-sectional size of the cabinet, and with a cut-out in it. The base itself is exactly 1 mm smaller all round than the frame to enable it to be inserted with ease. Inner damping
The inner damping of the speaker uses 5 mats of damping material loosely placed inside the cabinet, but without interfering with the bass reflex tube. The frequency crossover unit is attached behind the bass cut-out on the rear cabinet wall. | Component parts list for 1 box | | | | The kit includes all the components listed here but not the cabinet. | | | | Tweeter: | G 25 FFL 8 Ohm | 1 piece | | Woofer: | AL 170 8 Ohm | 1 piece | | Terminal: | ST 77 | 1 piece | | Bass reflex tube: | BR 25.50 (full length) | 1 piece | | Damping material: | Polyester wool | 2,5 bags | | Crossover: | Crossover VIB 170 AL | | | Countersunk screws: | 3,5 x 25 mm | 8 pieces | | Wood screws: | 4 x 20 mm | 8 pieces | | Cable: | 2 x 1,5 mm2 | 2 m | | | ............... |
| Cabinet parts list for 1 box | | | | Parts | Size (mm) | Quantity | | | | Material: 19 mm chipboard or MDF | | Front / rear panel | 1000 x 210 | 2 | | Side panels | 1000 x 212 | 2 | | Top panel / frame | 172 x 212 | 2 | | Brace | 172 x 100 | 2 | | Brace | 212 x 100 | 1 | | Bottom panel | 170 x 210 | 1 |
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