Got my little hands on the Purifi 10"s

[ryanosaur]

Is there anyway to redesign and move those braces to the middle of the exterior panels and cut-out the driver area? Typically the edges of a box are the strongest and the middle of the panels need the most reinforcement/are more susceptible to resonance.

Agree. Corners are "Self-Bracing," so to speak. The general rule-of-thumb I've seen is to make certain you have reinforcement bracing every 10." More than that just adds weight.

Also, is there a reason (perhaps I missed) for giving each driver its own chamber?

 

[CINERAMAX]

That would change the 15 gallon back box specified by the manufacturer also that would delay the project, there will be fluff attached to the perimeter to lesten resonances, thanks for the feedback.

 

[CINERAMAX]

Agree. Corners are "Self-Bracing," so to speak. The general rule-of-thumb I've seen is to make certain you have reinforcement bracing every 10." More than that just adds weight.

Also, is there a reason (perhaps I missed) for giving each driver its own chamber?

But it is trapezoidal bracing which has to have a positive effect.

 

[ryanosaur]

But it is trapezoidal bracing which has to have a positive effect.

That you’ll need to explain, please.

Where I see the need for bracing in your cabinet, you have none. The panels behind each driver must be braced. As it is those ~28x14” panels are not.

Your design, your money… but common practice and best practice is not being utilized. That’s all I say.

Bye.

 

[CINERAMAX]

I will see what can be done on both sides of the speakers.

 

[montyliam]

With ££££ of drivers per cab, take the time and design them properly imo. The bracing you have planned at the moment is doing nothing but adding weight to those cabs. Connecting the middle of the panels to the centre panels will make this box very strong. Something like this would be a gazillion times better.

 

[Timcognito]

With ££££ of drivers per cab, take the time and design them properly imo. The bracing you have planned at the moment is doing nothing but adding weight to those cabs. Connecting the middle of the panels to the centre panels will make this box very strong. Something like this would be a gazillion times better.

Especially if one tied in the cabinet corners.

 

[montyliam]

Especially if one tied in the cabinet corners.

The corners do not need bracing, they are the strongest part of a box. The middle of the panels are the most susceptible to flex and or resonance.

 

[Timcognito]

The corners do not need bracing, they are the strongest part of a box. The middle of the panels are the most susceptible to flex and or resonance.

Yes if the vibration comes from air pressure and not the speaker bodies.

 

[ryanosaur]

With ££££ of drivers per cab, take the time and design them properly imo. The bracing you have planned at the moment is doing nothing but adding weight to those cabs. Connecting the middle of the panels to the centre panels will make this box very strong. Something like this would be a gazillion times better.

At something like 28", instead of single center brace per side, it should be 2 (1 to each side of the Motor).

Doing so will both reinforce the panel itself and also help take any flex away from any other part of the cabinet / minimize audible resonance.

 

[CINERAMAX]

Better? Thanks to all that helped saved the project.

 

[ryanosaur]

I know that’s your mule…
Don’t need the diagonal braces to the corners. Just make the new braces to divide the outer panel into thirds. Also per our friends rendering, make certain to cut out section of the brace, it can be u shaped or a round hole, even a square cut out.

You will have a more successful cabinet that way!

 

[CINERAMAX]

i want to have 4 independent 15 gallon backspaces. Yes the new supports are arched contouring the speaker but with open space to preserve cavity volume.

 

[ryanosaur]

i want to have 4 independent

I asked earlier... what is the reason for this? Just curious.

 

[CINERAMAX]

Ive spoken to 2 subwoofer array manufacturers they keep each cavity sealed. Besides 2 woofers in parallel and 2 serial will have slight variances.

 

[ryanosaur]

Ive spoken to 2 subwoofer array manufacturers they keep each cavity sealed. Besides 2 woofers in parallel and 2 serial will have slight variances.

Thank you.