Maybe if it was a solid restriction it would make a measurable difference. But most baskets are pretty open....
well, fired it up for the first time.
need to deal with an airleak at the 90 degree handle (its not caulked yet cause I need to round that corner over still), but it BUMPS thus far. measurments forthcoming later this week.
The suspension on the faital does seem to start getting noisy after about 15mm p2p (roughly, maybe a tad more than that).
I'm hoping that fixing all the airleaks will help with excursion control a bit.
need to deal with an airleak at the 90 degree handle (its not caulked yet cause I need to round that corner over still), but it BUMPS thus far. measurments forthcoming later this week.
The suspension on the faital does seem to start getting noisy after about 15mm p2p (roughly, maybe a tad more than that).
I'm hoping that fixing all the airleaks will help with excursion control a bit.
Last edited:
well, everything was finished up yesterday (minus some small details) and delivered to the client for his first show last night (small house, room dimensions 20 x 30). final result was 7 broken lightbulbs and 3 light fixtures falling out of the ceiling, so a success imo.
I've since picked them back up for a more rigorous testing regiment... maybe I'll finally get measurements now that the stupid deadline isnt looming over my head.
heres some misc pics from the final days of building (busted the second cab out with the quickness once I had build order down).
I've since picked them back up for a more rigorous testing regiment... maybe I'll finally get measurements now that the stupid deadline isnt looming over my head.
heres some misc pics from the final days of building (busted the second cab out with the quickness once I had build order down).
Attachments
Surprisingly, not at all. I didnt have a chance to fire em up before drivig 200 miles to the gig they played last night (caulkfor handles/jack plate still drying). Got to the gig, accidentally had one of the subs wired to 2+/2-, so i rewired, fired it up, only rattles were coming from the house shaking. More extensive tests forthcoming
Dayton square holes are pretty stiff if you bend them. On anything with a decent size mouth id want a center batton to attach to. Can take some pics thi week on my grille assembly technique to show details
Yeah I'd make some curved pieces to attach them to to put an arch on them (for the TH18's). The mouth on the PAL12 is small enough I don't think it would need it, but I could be wrong. That's what testing is for!
when I was saying bent, I meant just bending 90s on the edges. I bent 90s on 3 edges, 135 on the fourth edge) with a metal brake, then double sided taped some plywood sandwhich boards to the inside edge, drilled pilot holes, and sunk drywall screws into them to "clamp" them to the inside of the mouth.
to be fair, the subs had no business being brought to around 50v in that space... it was the living room of an older house, but thats where they were set up 😛
you couldnt hear the music from the street over the whole building shaking.
you couldnt hear the music from the street over the whole building shaking.
quick phone vid I took after attempting to make some measurments... didnt have enough room, was experiencing a dip at 50 that changed with mic placement so I'm assuming reflections were messing with me.
Badman Sound Sub Test 1 - YouTube
Badman Sound Sub Test 1 - YouTube
I tride 4 meters, 3 meters, 2 meters and like 1 foot.
I was also getting really low input levels with the mic.
the speakers were moved to the middle of the parking lot when I was trying to run measurements. I moved them over to the side to play music so they wouldnt get hit by cars.... lol
I was also getting really low input levels with the mic.
the speakers were moved to the middle of the parking lot when I was trying to run measurements. I moved them over to the side to play music so they wouldnt get hit by cars.... lol
Last edited:
some final notes.
at high power (almost tickling clip lights on an xti 2 4k, there is some minor panel flex (about 1 to 2 mm, barely noticable). I could have used another brace or 2 on the rear panel.
I'm going to rework the grill mounting brackets so there is a solid pice extending vertically in the horn mouth to help stabalize the bottom panel (which also displays slight vibration with heavy bass). The grill moves about 4mm p2p when I hit it with high level sines in the 40hz range, so this vertical brace should help stabalize this as well.
at high power (almost tickling clip lights on an xti 2 4k, there is some minor panel flex (about 1 to 2 mm, barely noticable). I could have used another brace or 2 on the rear panel.
I'm going to rework the grill mounting brackets so there is a solid pice extending vertically in the horn mouth to help stabalize the bottom panel (which also displays slight vibration with heavy bass). The grill moves about 4mm p2p when I hit it with high level sines in the 40hz range, so this vertical brace should help stabalize this as well.
Been wondering which PA sub to build for a while, and this one looks promising.
Did you post the Hornresp parameters?
- I've had a look through and can't find them.
Chances are I'd be using a Beyma 15P1200Nd.
Cheers
Chris
Did you post the Hornresp parameters?
- I've had a look through and can't find them.
Chances are I'd be using a Beyma 15P1200Nd.
Cheers
Chris