The design for this got started in the vintage cts drivers thread and I'll blame kringle77 for stoking my curiosity http://www.talkbass.com/forum/f15/t-s-parameters-vintage-cts-8x10-drivers-915820/index5.html I've owned and played ported 410 cabs for years. They seem to have the right amount of power and punch for a good stage cab. I like the voicing of a 10" driver for a contrast to my 12-loaded cabs but the 2x2 arrangement is not optimum for dispersion. For me, the .5 aligned sealed 610 seemed like a good single cab solution for rock and blues gigs where there is a FOH system to carry the room but you want a tight solid vintage tone that can hang well in a loud onstage mix. There are, of course, a number of very capable systems that do this well but this particular configuration looked interesting so I wanted to give it a shot. The 610 form factor can pack a good wallop but still be easy to move around. I like the Berg NV610 sound but not the 36"Hx24"W 100lb form factor. I'm not getting any younger and need to be able to carry this thing up and down two flights of stairs. I ended up with a 33"Hx23"Wx16"D box with a vertical divider which creates two subchambers of 3 drivers each. A 12mm Oukume box and bracing with an 18mm birch ply baffle should be quite stout and weigh somewhere between 70-75 lbs finished with castors, side and tiltback handles, rear skid rails, and a perforated steel grill to protect the speakers. Here is the dimensional drawing, top view of the internal bracing, and wiring diagram. Following the testing kringle77 did with a variety of sealed 10 drivers, I went with 4 CTS Fliptop neos and 2 Weber 10FL. I was going to try 3 CTS neos in the low-passed side and 3 Webers in the full range side, but the CTS neos have a better bass reponse so I decided to load a CTS neo in the lower spot on the full range side. I think these drivers should work well together to give a tight solid bass, nice even mids with some growl, and enough treble extension not to sound too dark. Here is a list of supplies. This doesn't include shipping/handling so the total cost is about $975 for this DIY project. I don't cut corners on materials or components so you have to be pretty confident going into a build like this that it's going to work out. Anyone who whines about a custom builder wanting $1000 for a med/large cab with premium components needs to just buy used. This stuff isn't cheap. 2 Weber 10FL $206.00 https://taweber.powweb.com/weber/bass10fl.html 4 CTS Neo Fliptops $300.00 http://www.fliptops.net 3 Acousta-Stuf Polyfill 1 lb bags $32.40 http://www.parts-express.com/pe/showdetl.cfm?partnumber=260-317 2 Dayton Audio PH114 Plastic Pocket Handle $8.72 http://www.parts-express.com/pe/showdetl.cfm?partnumber=262-824 1 Neutrik NL4MP-ST Speakon 4-Pole $3.15 http://www.parts-express.com/pe/showdetl.cfm?partnumber=092-053 1 Penn-Elcom M1503 ABS Dish One 1/4" + One Neutrik D/NL4MP $1.79 http://www.parts-express.com/pe/showdetl.cfm?partnumber=262-346 8 Penn Elcon Chevron Corner $4.00 http://www.speakerhardware.com/penn-elcom-chevron-corner.php 1 Small Right angle handle $9.95 http://www.speakerhardware.com/small-right-angle-handle.php 2' Pet Screen 36" $5.10 http://www.speakerhardware.com/pet-screen-48.php 2 Duratex Roller Grade Pint $29.00 http://www.speakerhardware.com/duratex-roller-grade-pint.php 1 31" Cab Slider Rail $14.95 http://socalskateshop.com/index.php?l=product_detail&p=9836 1 4.7mH 16ga ESQ - Super Q Coil $18.73 http://www.erseaudio.com/Products/SuperQCoils16Gauge/ESQ55-16-4700 1 22.0μF 250v PulseX - Capacitor $6.51 http://www.erseaudio.com/Products/PulseX250v/MPX25-03-22-00 2 Recessed Tilt Caster, BLACK - RH-9024BK $18.00 http://www.reliablehardware.com/mediumrecessedtiltcasterhousingblack.aspx 2 Front Leveling Set - RH-1609 $2.00 http://www.reliablehardware.com/frontlevelingset-rh-1609.aspx 1 Speaker Grill 5/32'' Dia. Staggered - RH-3152 $64.28 http://www.reliablehardware.com/customspeakergrill-532diastaggered.aspx 1 4' x 8' Sheet 12mm Okoume ply $130.00 Houston Hardwoods 1 2' x 4' Handi Panel 18mm Birch ply $20.00 Home Depot 2 PL Premium adhesive $8.00 Home Depot 50 #8 1" Particle board screws $5.00 Home Depot 1 Twin size mattress topper $14.00 Target Sub Total (without shipping/handling) $901.58 You can do these projects with a pretty modest shop area. I don't own a table saw, drill press, lathe, joiner, or many other power tools a serious woodworker would have. I have the lumber yard make two sizing cuts at specified widths on the 4'x8' sheet to give 3 reasonably sized pieces which are easy to load and work on. I use a router, 4' straight edge, framing square, tape measure, clamps, and a Black & Decker Benchmate for all large cuts. With careful measurement pieces are square with tolerance within 1/32". For small piece cutoffs and miters on all the brace pieces I picked up a cheap plastic miter box from Home Depot - $8 with saw included. This turned out to be extremely useful. Here are some construction shots: Baffle with speakers and bracing placed for fit... An exploded view of the back, sides, and divider. The angled corner braces are just placed for location and will be mounted mid-way between front and back. Spline braces are provided for stiffening and cutouts for handles and jack plates are reinforced with extra wood as shown. This is a bottom view looking up to show the angle braces which provide added stability to the front baffle and vertical divider. There is 14" between the front baffle and back panel. The baffle is inset 7/8" to accommodate a grill with 3/4" bent edges. The lone corner brace is not quite in position. They will be set in position and mounted once the bottom is attached.