BillFitzmaurice.info

Bruce Weldy wrote:

For venues of One Kilo-people, Ten Kilo-people or dozens of thousand people, TenK Array speaker system can leisurely handle its sound reinforcement. What talent on earth does TenK have? Complex engineering calculations and tests and internal acoustic structure on TenK is dull to users.

Methinks English ain't their first language......

Methinks English isn't their language at all. I've seen better translations out of Google.

We used 12 cabs 6 per side.

It would not take much of an overstatement (specs wise) on behalf of Munson about their cabs for 12 cabs to = 8 DR250's. I think you'll be fine with 8, but you could always add another pair
Tom has already pointed out the DR250's will be much lighter as well.

Guys I've been checking Pulseman's setup of OT12 and T48 combination and I feel cool already.

It is good to know other people using BFM in countries nearby you are doing great things!

Hey guys,

We are back with some progress pictures. We applied hot melt glue to the possible leak points around the baffle to keep the cab air tight. Please see pictures below.

Below are some progress pictures of the cabs with the flying hardware fittings. Some acrylic primer was applied to places that will be difficult to reach once hardware are installed,

The pictures below basically shows the flying rig design and fabrication process.
The project is based on finding from this link.
http://www.youtube.com/watch?v=r6gqIQD8ZiY

More test fitting flying hardware pictures.

Looks like some pretty serious hardware...

That will add some pretty serious weight. But looks sexy.

Scott Brochu wrote:That will add some pretty serious weight. But looks sexy.

I'm yet to measure the weight of the cabs but you are right. However i am sure it will be way lighter than any cab in its performance range

88h88 wrote:Looks like some pretty serious hardware...

I believe diyers could do even better with just a little support rather than the discouragement we usually face trying to perfect our products. I found this system and decided to enhance and adapt it to BFM cabs. Looks good and working well so far.

cave wrote:

88h88 wrote:Looks like some pretty serious hardware...

I believe diyers could do even better with just a little support rather than the discouragement we usually face trying to perfect our products. I found this system and decided to enhance and adapt it to BFM cabs. Looks good and working well so far.

I don't think the comment was intended to be critical.

At least here in Australia, I don't think your method would satisfy the engineering requirements required to fly PA.
The main reason being that Bill's designs are engineered for sound quality/output, not engineered for structural integrity for flying.
In order to meet structural integrity for flying here, the cabs would have an integral steel frame on the inside of the cab so that, if for some/any reason the cab decided to fall apart, none of the pieces would fall to the ground as they are held firm by the integral internal steel framework.
A number of brands of commercial cabs are designed to be flown, but can only be certified to be flown by an engineer in the country they will be used. So it doesn't really have anything much to do with the fact the cabs or the rigging are DIY.

Another method that might satisfy the requirement here would be that the cab sits on a frame on the bottom side of the cab, ie the cab is held up without relying on the structural integrity of the cab.

Of course, around the world, the whole reason that safety has become an issue in PA over time is simply one of to many things falling down that have been lifted up, and to many times people being injured as a result.

Whatever you do, I urge you to investigate your local laws about rigging and flying cabs, and if applicable, have an engineer certify your method.
After all, it will be you that ends up having to pay should anyone be injured.

My comments aren't intended to be critical either. Even though it's often said the law is an ass, ignorance is never an excuse when it comes to law...

Hi Grant Bunter,
I actually took 88h88's comment as a compliment. I just was saying that encouragments will serve us better and make diyers strive to improve.

I have steel plate inside the cabs to hold cab and outer steel together. Your advice is well noted and will go a long way to improve the hardware for the DR250. Thanks

Yup, I'm never anything other than complimentary on build threads.

88h88 wrote:Yup, I'm never anything other than complimentary on build threads.

+1 to 88h88 I agree.

cave keep up the good work with regards to your build and a little extra weight added to make things stronger and safer never harmed anyone.(excuse the pun)


PulseMan

Hi Guys,

Today we continued with installing the hardware and applying acrylic paint as primer so here are some pictures for you.
You will find that there are a few modifications to the cabs to accomodate the hardware. I will post some more progress
pictures tomorrow.