Au-Rock-o Sub, yeah I've been busy.

[bolland83]

So without getting long winded, here's my attempt at a "dead" cabinet, overkill bracing, double thick baffles. It's getting a RSS265HF powered by a SA240B. After bracing, plate amp, and sub displacement, the cab comes in at 30 liters or so, the 6db of boost at 30hz brings up the low end to fairly flat. External dimensions are 15"Hx15"Wx17"D. All Aurocco ply, hence the name Au-Rock-o, despite the light weight of the ply, it's heavy as a rock. If I had to guess, I'd say between 60-75lbs with driver and amp. If I'd used MDF, it'd be about 90lbs. :eek:

[bolland83]

Re: Au-Rock-o Sub, yeah I've been busy.

A few more shots, I included a photo of the mess I made, for those of you who think my shop is too clean, for what it's worth, the floor color hides a lot of the sawdust :D There's quite a bit you can't see in the photo, ever use a router so much that your hands tingle?

[[email protected]]

Re: Au-Rock-o Sub, yeah I've been busy.

that is very well done.

[bolland83]

Re: Au-Rock-o Sub, yeah I've been busy.

Thanks! Got it put together enough for a listening test, no pictures yet, sounding really nice so far! Thinking about a big fat 45deg. chamfer on the front and rear, like 1 1/2" to make it look a little smaller, maybe a dark ebony stain front and rear and just a clear coat on the sides. Or, just give it a good sanding and a clear coat all the way around, haven't decided yet.

[DIYNut42]

Re: Au-Rock-o Sub, yeah I've been busy.

Very nice! That cabinet should serve it's purpose very well with all that bracing.

[tomzarbo]

Re: Au-Rock-o Sub, yeah I've been busy.

All the bracing looks awesome. Probably overkill, but that's how I would prefer it to be. It's a shame to cover it up, but at least we have pics. Nice!

TomZ

P.S. Woah, nice work bench. Did you make that? I have a few similar large tables on wheels, but nothing so elaborate. I like it.

[bolland83]

Re: Au-Rock-o Sub, yeah I've been busy.

Here's a front shot of the box in "test mode" meaning, I was in a hurry to hear it, and haven't decided on a finish yet :D You can't see the bracing, but you can certainly hear the benefit of having it. Man this thing sounds clean! I can't believe I've been lazily slapping boxes together for so long, never knew what I was missing. The down side, is that all future builds just got a lot more complicated cabinet wise.

TomZ, yep, that's the bench I built, build thread here. If I had to do it over again, I'd beef up the bottom frame a little bit more, use MDF for the top, and go with bigger casters. I still can, just have to pull out some screws and re-configure a few things. I love it though, for the garage shop, it's a dream to work with.

[50 watt head]

Re: Au-Rock-o Sub, yeah I've been busy.

Man, that looks frickin' sweet! I'll bet it sounds awesome!

I used the 265HO for mine, and the non-boosted 240 plate amp. Judging from your photos, I'm gonna guess my cab is not nearly as dead as yours :D

[ReissM]

Re: Au-Rock-o Sub, yeah I've been busy.

Excellent design and execution.

Like you said, my future projects just got a lot more complicated with regard to the cabinets. Very nice job.

Glued? screwed? nailgun?

All of the above?

With regard to the plate amp... I guess that you could say i'm a little paranoid about air leaks. I've done 5 subwoofers with the Dayton 240 amps. For all of them I built small sub-enclosures inside the subwoofer that are just big enough for the 240 amp to fit into. Then I silicone caulk the internal edges and the "through hole" for the wires. So there's no chance any air can leak into the plastic amp enclosure and find it's way out the potentiometer holes.

Have you had any issues with air leaking out through the Dayton 240's plastic enclosure? Or even around the perimeter?

Here's a few snapshots showing what I mean about the sub-enclosure inside the subwoofer...

[ReissM]

Re: Au-Rock-o Sub, yeah I've been busy.

... and another quick and dirty subwoofer with the internal sub-enclosure for the Dayton 240 amp...








This is probably overkill, but I feel better knowing there won't be any air leaks around or throughthe Dayton 240. (and I don't have to torque the 240's screws down really tight... because there's no pressure pushing against the Dayton amp's plastic sub-enclosure)

[6thplanet]

Re: Au-Rock-o Sub, yeah I've been busy.

Awesome job on that cabinet and bracing, definatly overkill in a good way. I'd go with the big chamfer like you mentioned, prolly look pretty cool! Thumbs up to ya.

[xavier]

Re: Au-Rock-o Sub, yeah I've been busy.

I haven't had trouble with leaks using various plate amps, but I (generally) build sub enclosures just in case. My problem is when I use the BASH amps (which I really like the sound of) the plate vibrates. Usually the music covers it up, but if it's a section of a piece that's mostly bass without much going on up higher then I can hear the plate amp buzzing and vibrating, despite being in its own vented sub-enclosure. Grrrrr..... Next time they're getting they're own cabinet.

[bolland83]

Re: Au-Rock-o Sub, yeah I've been busy.

A few progress pics, went with 1 1/4" chamfers, black stain (ebony) on the baffles, cherry on the sides. Also did a tiny groove around the edges to give it an interesting line between the baffles and sides. Not pictured, yet, I'm in the process of putting on the clear coat, went with satin Polycrylic, not everyone's cup of tea, but I've used it before with minimal issues. The stains are all Minwax as well, I'm kinda on a mission to prove that you can get great results without having to use exotic materials and finishes. $40 for a sheet of aurocco ply, and maybe $25 in stain and poly, 0 trips across town to a specialty store, not too shabby so far. Got two coats of poly on, gonna need to do some light sanding, and add another couple of light coats. Will post pics of that later on. Once that's done, I'll move on to building some feet or a plinth, or a combo of the two.

[ReissM]

Re: Au-Rock-o Sub, yeah I've been busy.

Looking good!!!

[bkeane1259]

Re: Au-Rock-o Sub, yeah I've been busy.

Looking sweeeet, but pray tell, how does one do a 1 1/4" chamfer??