BillFitzmaurice.info

I know it's disappointing to wait, but you're probably making the right call! I'd hate for you to cut the hole and find out it's too big. Well yeah, too big or too small would both be a total failure, as there is no way to really reach there to fix it (and in case of too big no fix at all...). Got ...

Well, both will just refer to the drawing and not unpack and measure a piece. I think the drawing is true and accurate, just not sure how cone movement effects the surrounding (thank you for the assist on the word) and i want to avoid having contact areas here... I think i will wait for now, i hope ...

my thought was, that the cone border (don't know the english term) is the largest when the cone is not stretched out, as the rounded edge takes the cone movement it flattens when the cone moves in any direction. so the outside of the cone border "should" be fine as hole diameter? Adding 4 ...

1000041998.jpg As shown here, the inner diameter of 281mm (or 11.06 inch) would be the diameter of my cutout ideally; as the screw center forms a circle of 297mm and i'd add at least 6 mm of wood around the screw center (3mm screws) this would give a maximum cutout of 285mm in diameter - which is w...

Aand i got a bit done :) 1000041930.jpg Drawing the template 1000041931.jpg Template cut (and stiffend, too thin when left alone...but in this way, keeps the form and i double checked before stiffening) only the red lines relevant to copy to the side. Drilled through two sides, they will be the firs...

Of course, you're building T30s, so tilting and rolling is gonna' be really hard unless you are 4 feet tall. Have you considered puting 4 casters on the back of the cab surface mounted like the QSC subs? Well yes, this was the starting point for the wheels. Now i thought about the same wheel config...

Sooo, sadly the bad weather stayed a bit longer, and then the workload escalated in an unhealthy amount. i got the shop sorted, and got the wood precut on a wall-saw (what a simple way compared to my little tablesaw) And now all here, and i have to get back to work -.- 1000041792.jpg 16 sheets for 8...

I just wasn't sure if there is any acoustical implication in it i missed; sorry for opening that box. But i see your point yeah. 30" width is not ideal in terms of handling; but it is still handleable or what i consider as handleable. When stacking i am not alone; placing three on top of each o...

For the best control, when handling the subs, is to be able to have one's hands just outside the hips. Farther apart, and one loses strength. Too close, and one loses side-to-side control. Just a thought. Could you elaborate further on that? I tried to wrap my mind around that sentence, it got lost...

Duh my bad yes, just between two other things i racalled the wrong half of my memories.

But anyway, yes they will be distanced and yes toed in.

Testing this indoors will not be as apparent. Funny part, did this an hour ago. Stacked both ontop of each other on the amprack and turtled around close to it below. Even indoors it works somehow way better than i expected. I will test with the 4stack how high i can lift them up and build the groun...

Bill Fitzmaurice wrote: ↑Sun Feb 15, 2026 8:03 am Try reversing the polarity of the tweeters, that may fix the dip.

In the first view, the tweeters were crossed at 2khz; but in the last shot they are inverted yes, this helped.

Sooo, i did a thing or two :] Still no option outside, but as i had to clean the shop anyway i placed them there and played around a bit :) They need/want to get some EQing to sound even better, but i got them :) The amp i power them with has its own voltage limiter, i set them according to the driv...

In that size the handle to all corners seems legit, the more i think about it... Just the front bottom corner, also when hauling the DRs around i noticed i can just grab in the horn; i think there i will let it go without handle. In case i miss it there, the best place to slit it in there afterwards...

Well yeah, we've had that before. But lets sort this out: the only part I take into account is what the SPL is at the lowest frequency I want to produce This is where we differ. Regarding the sensitivity and maxSPL; the part i consider is the Hz-Position of the roll off down below. And this is where...