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by Bill Fitzmaurice
Mon Dec 06, 2021 3:00 pm
Forum: Build Threads
Topic: HowieZ DR200 build
Replies: 69
Views: 1216

Re: HowieZ DR200 build

There are a number of different electrician's bits. Some are made for snaking behind drywall and then drilling through two or more studs. Mine is 12 inches long, intended to go through wall footers and the floor beneath before the drywall goes up.
by Bill Fitzmaurice
Mon Dec 06, 2021 1:53 pm
Forum: Build Threads
Topic: HowieZ DR200 build
Replies: 69
Views: 1216

Re: HowieZ DR200 build

Electrician's bit.
by Bill Fitzmaurice
Mon Dec 06, 2021 7:51 am
Forum: Simplexx
Topic: Sealed Simplexx 1x12 Speaker Selection - 3012LF or PB112
Replies: 6
Views: 61

Re: Sealed Simplexx 1x12 Speaker Selection - 3012LF or PB112

The 3012LF does not have specs that work well in a sealed enclosure. From the plans: A sealed cab must use a high Qts driver. A low Qts driver in a sealed cab will have a weak low end. Never mix different speakers unless one is a top, one is a sub, driven by separate power amplifiers using an electr...
by Bill Fitzmaurice
Sun Dec 05, 2021 10:18 am
Forum: Introduce Yourself
Topic: Which cab to build.
Replies: 24
Views: 205

Re: Which cab to build.

All of the cabs that I designed or re-designed over the last twelve years were done in sketchup first. If you take the time to learn how to use it you can isolate each individual part and remove it from the assembly to view it all by itself.
by Bill Fitzmaurice
Sun Dec 05, 2021 10:11 am
Forum: Build Threads
Topic: Radian's T48 slim build
Replies: 30
Views: 1731

Re: Radian's T48 slim build

My ex-wife can't figure out how to use a can opener. That's one of the reasons why she's my ex-wife. :bash:
by Bill Fitzmaurice
Sun Dec 05, 2021 8:30 am
Forum: Introduce Yourself
Topic: Which cab to build.
Replies: 24
Views: 205

Re: Which cab to build.

With sketchup you can measure all the parts in metric, and then you won't have to screw around with calculations. Also, I estimate that 75% of build questions would be eliminated if builders would just use the sketchup model. But while you can lead a horse to water...
by Bill Fitzmaurice
Sat Dec 04, 2021 10:37 pm
Forum: Introduce Yourself
Topic: Which cab to build.
Replies: 24
Views: 205

Re: Which cab to build.

rrfireblade954 wrote:
Sat Dec 04, 2021 8:42 pm
Currently nothing is miced up. We are only just starting
To build our pa.
The PA is where you want to start. The backline cabs should only be driving the stage, the PA drives the room.
by Bill Fitzmaurice
Sat Dec 04, 2021 8:36 am
Forum: Introduce Yourself
Topic: Which cab to build.
Replies: 24
Views: 205

Re: Which cab to build.

They both have valve 4x12 cabs. For pub and club no one needs more than a 112. Unfortunately six stringers tend to all picture themselves as Angus playing at Wembley, and use gear appropriate for that. We can certainly make recommendations for a rig that will send them home crying, but it won't be ...
by Bill Fitzmaurice
Thu Dec 02, 2021 9:26 pm
Forum: Everything Else
Topic: Good article on SPL
Replies: 10
Views: 1124

Re: Good article on SPL

You usually don't get to the melting point of the copper on a coil. The most common source of voice coil failure is burnt insulation, which causes coils to short to each other, which lowers the impedance, which pulls more current, which heats the wire even more, which burns more insulation. Then it...
by Bill Fitzmaurice
Thu Dec 02, 2021 9:11 pm
Forum: Home Theatre/Stereo/Auto Sound
Topic: Should I build TLAH or SLA for TV/Movie/Music?
Replies: 10
Views: 141

Re: Should I build TLAH or SLA for TV/Movie/Music?

Build a center and surrounds. There's no reason why you can't wall hand SLA.
by Bill Fitzmaurice
Thu Dec 02, 2021 12:44 pm
Forum: Everything Else
Topic: Good article on SPL
Replies: 10
Views: 1124

Re: Good article on SPL

Not necessarily. Higher power handling requires a larger coil wire gauge, which increases the moving parts mass, which all else being equal reduces sensitivity. You can never look at just one spec, you have to look at all of them.
by Bill Fitzmaurice
Wed Dec 01, 2021 9:51 pm
Forum: Everything Else
Topic: Stuffing the back of compression drivers
Replies: 1
Views: 36

Re: Stuffing the back of compression drivers

It may make response better, the only way to know is to measure them with and without the foam.
by Bill Fitzmaurice
Wed Dec 01, 2021 2:01 pm
Forum: Home Theatre/Stereo/Auto Sound
Topic: THT Driver
Replies: 8
Views: 117

Re: THT Driver

The problem is that it won't fit into the access unless you mount it first and then attach the flanges. With the LP version there's plenty of room.