- Item: Jazzman's Ripole Subs
- Type: SLS Ripole Subwoofers
- Posted: 4 May 2011
- Builder: Jazzman53
- Country: United States
- Comments: 2
Jazzman's Ripole Subs
The speaker building psychosis got the best of me again after becoming intrigued by "Ripole" subs from German inventor Axel Ridtahler. A Riplole as basically a compact folded-baffle dipole that plays very low (below 20hz) and because its “figure-eight†sound pattern nulls the output off-axis, it excites fewer of the room resonances that can give bass the dreaded “one-note boomâ€.
The boxes are 3/4 MDF sheathed with 5mm red oak plywood and edge-trimmed with quarter-round oak molding. The center sections are white oak planks stained in a contrasting color and indexed to the mating box halves with 1/4 oak dowel pins. Box sections are fastened together using 1/4-20 all-thread rods and decorative cap nuts. Sheathing and trimming the boxes is probably more work than most people would want to endure so I’ve attached a drawing and cut list for a simpler box using only 3/4 MDF or plywood. The woofer cutouts in the baffle boars are cut with a bit of extra clearance to allow the woofer magnets to center themselves in the outer panel openings. I used foam speaker gasket tape to seal around the woofer magnets. Of course, I also have a CAD drawing of the box with oak sheathing and trim if anyone wants it (email jazzman1953@gmail.com). The woofers are wired in parallel for 4-ohm load and I’m using a Behringer DCX2496 digital crossover and TFM-25 amp.
Jazzman53
http://jazzman-esl-page.blogspot.com/
The boxes are 3/4 MDF sheathed with 5mm red oak plywood and edge-trimmed with quarter-round oak molding. The center sections are white oak planks stained in a contrasting color and indexed to the mating box halves with 1/4 oak dowel pins. Box sections are fastened together using 1/4-20 all-thread rods and decorative cap nuts. Sheathing and trimming the boxes is probably more work than most people would want to endure so I’ve attached a drawing and cut list for a simpler box using only 3/4 MDF or plywood. The woofer cutouts in the baffle boars are cut with a bit of extra clearance to allow the woofer magnets to center themselves in the outer panel openings. I used foam speaker gasket tape to seal around the woofer magnets. Of course, I also have a CAD drawing of the box with oak sheathing and trim if anyone wants it (email jazzman1953@gmail.com). The woofers are wired in parallel for 4-ohm load and I’m using a Behringer DCX2496 digital crossover and TFM-25 amp.
Jazzman53
http://jazzman-esl-page.blogspot.com/
Comments
- Jazzman53
- 4 May 2011 at 04:59PM
- Ooops! Forgot the parts list:
Parts List for two Ripole subs with connecting cables:
(4) Peerless SLS 12" woofers (Parts Express) $320
(2) Pair binding posts (Parts Express 091-1245) $18
(1) Sheet 3/4 MDF (Home Depot) $25
(4) 1/4-20 x 36 all-thread rod (Home Depot) $7
(16) 1/4-20 furniture cap nuts (Home Depot) $16
(8 ) 1/4-20 threaded wood-inserts (Home Depot) $8
(8 ) Speaker spike feet (Parts Express 249-727) $4
(1) 1/4 x 36 oak dowel $2
(32) #8 x 1†cap screws (Parts Express 081-425) $3
(1) bottle yellow wood glue $4
(8 ) Banana plugs (Parts Express 091-356) $11
(1) Roll speaker gasket tape (Parts Express 260-542) $6
(1) 50ft- 14ga flat-braid copper speaker cable (Rat Shack) $25
Total $443
- TwistedPair
- 13 December 2016 at 06:40AM
- Gorgeous!!!!!