Enclosure database

[shredder1 10+ year member]

I will strive to add at least 1 daily but need feedback on what users on this board would like to see. Its slightly tedious for me to put these designs up as my designs are not organized worth a crap. Some are old and have no cutsheets while some involve something like 20 mechanical drawings alone. For example I tried earlier to put up a 6th order blowthru for 4ea Sa-12 classics but was unable to. I was looking it over and found 6 of 16 pics missing in the preview and could not fix it so I gave up.
I guess I'm looking for advice on what designs will be well received.

Any useful comments are appreciated.

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[shredder1 10+ year member]

I've posted a bunch of designs but my original question in this thread is still out there. I'd appreciate any guidance on what members would like to see posted. I'm limited on the # of images I can post so something like this can't get posted. It turned out great and was very impressive in the El Camino it went in.

Once again, any feedback from members would be appreciated.

 

[chillin 10+ year member]

Thanks for putting all these up for everyone to see.

Are you still doing custom designs also? It won't be happening for a while, but I'm looking for a 4th or 6th with dimensions of 24x8x38. Basically want an elevated floor in the back of my truck. I have 2 dogs that will lie on it often, so figured a bandpass would keep the subs safe.

 

[shredder1 10+ year member]

Thanks for putting all these up for everyone to see.

Are you still doing custom designs also? It won't be happening for a while, but I'm looking for a 4th or 6th with dimensions of 24x8x38. Basically want an elevated floor in the back of my truck. I have 2 dogs that will lie on it often, so figured a bandpass would keep the subs safe.

With 8" height (I'm guessing) you intend on using 6.5's?

 

[chillin 10+ year member]

With 8" height (I'm guessing) you intend on using 6.5's?

That's the plan. I could also increase to 10" of height after the first 9" of the 24. So width of 38, then 8x9, 10x15. I've never done a bandpass, so don't really have an intended sub or subs in mind.

 

[shredder1 10+ year member]

That's the plan. I could also increase to 10" of height after the first 9" of the 24. So width of 38, then 8x9, 10x15. I've never done a bandpass, so don't really have an intended sub or subs in mind.

Without more info I really can't say. Generally an Ebp under 70 and optimally lower will indicate if a 4th is a good choice. Most 6.5's are hi-ebp and work in ported or 6ths. I've yet to design a 4th for the Rds-6.5's and hesitate to do so when finding that resonance I like (under 50hz) in the sealed chamber causes it to get so large its going to kill power handling. A 6th is going to be large for what it is regardless and you may have the space for 1 possibly 2 but without knowing what subs to use I'm unable to advise.

 

[shredder1 10+ year member]

Thanks for putting all these up for everyone to see.

Are you still doing custom designs also? It won't be happening for a while, but I'm looking for a 4th or 6th with dimensions of 24x8x38. Basically want an elevated floor in the back of my truck. I have 2 dogs that will lie on it often, so figured a bandpass would keep the subs safe.

Maybe do something like this but configured a little different, T-lines generally go a full octave under tuning and do not need big power to shine. I never built this one and haven't dusted off Hornsrep in years myself. I may not be able to use the program anymore. With a little research you can find what to look for a compatible driver then its just Sd x line length for tuning... then add some power. Its been years since I heard a T-line but they are a go to for Sq if you have the space.

 

[Jimi77 Premium Member]

Thanks for your contributions to the forum. I'd say if you could put some "generic" ported enclosures with cut sheets that would be the most beneficial to users. Stuff like a generic 2cuft tuned to 35hz, which will work with a ton of 12s. 6th order blow throws are cool, but how many people would make use of that design?

 

[shredder1 10+ year member]

Thanks for your contributions to the forum. I'd say if you could put some "generic" ported enclosures with cut sheets that would be the most beneficial to users. Stuff like a generic 2cuft tuned to 35hz, which will work with a ton of 12s. 6th order blow throws are cool, but how many people would make use of that design?

I get it, over the years designing has morphed into more specialized applications for me. I have some cookie cutter designs and will work on putting some up.
In the meantime there's always this...

https://www.srtforums.com/threads/official-free-ported-box-plans-56k-no.435910/


Ol' Moelester... haha

 

[1aespinoza Premium Member]

I get it, over the years designing has morphed into more specialized applications for me.

Port question. On the Fosgate manual for the T0D412 it specifies 12.56 sq in (4" round port) at 1.75 cu ft net. For slot port it is 41.25 sq in at 2.25 cu ft net. Both boxes tune at 40 Hz. Are round ports more efficient than slot ports?

 

[shredder1 10+ year member]

Port question. On the Fosgate manual for the T0D412 it specifies 12.56 sq in (4" round port) at 1.75 cu ft net. For slot port it is 41.25 sq in at 2.25 cu ft net. Both boxes tune at 40 Hz. Are round ports more efficient than slot ports?

Aeros negate the inherent chuffing a smaller port area will cause by distributing that boundary layer air. That will release the pressures inherent in a undersized port. Ever wonder what is loudest when firing your AR? Its the air refilling the barrel after the initial shot. Silencers do a great job of slowing down and diffusing that vacuum refilling. Hence the Aero, rounds are efficient by wall area but to truly reap the benefits you can usually undersize (fixed port area... etc) your port a little and have an efficient lil' space saver. I always recommend flares unless the port area of a round keeps velocities under like 120fps. Even then I'd flare if possible. Tbh some of the boxes I've designed modeled up with +200fps port velocity but never sounded like a Railroad. Chuffing is a HUGE no-no. Aeros help a ton and flaring the port entry and exit with as much transition space is the best. If done right an aero is always gonna be more efficient.. yes. But don't confuse a round with a flared Aeroport.

 

[shredder1 10+ year member]

Port question. On the Fosgate manual for the T0D412 it specifies 12.56 sq in (4" round port) at 1.75 cu ft net. For slot port it is 41.25 sq in at 2.25 cu ft net. Both boxes tune at 40 Hz. Are round ports more efficient than slot ports?

Did my previous post answer your question? Aeroports are a science, finding that velocity that pushes but negates chuffing. I sometimes design 3" ext flares /w/ 2" internal flares on a 5.9" port. Ask yourself how that looks... its a HUGE flare (12") on a 6" port basically... lol. Something that can more equate to velocities equating to a usual to a 7.92" 8" round? But round recommendations from manufacturers prickle my pickle usually. Plus those ol' recommendations usually are lower power. I actually hate rounds and the bad info they produce, flare that chit I say... and make the flare as big as possible.
I take airspace/tuning then build something special, unless impossible I design around any compromises and try to balance airspace /w/ tuning. Proof is in the pudding so to speak.
I wouldn't post designs without a hi-level of confidence in every design.

 

[1aespinoza Premium Member]

Did my previous post answer your question?

I read it a few times to try to grasp it but to no avail. I am not up to par on the terminology nor the rule of thumb specs. I have built boxes using the the OEM specs with great results and Fosgate has always included round port options. Never had issues with port noise but then again I have never gone high power on the sub stage. My goal was to determine if I could go round port on all my subs and save a considerable amount of space and simplify my box builds.

 

[shredder1 10+ year member]

I read it a few times to try to grasp it but to no avail.

Now you understand why I hesitate to give advice, I should stay in my lane and design. I re-read that bs I posted last night. I should delete it but will leave it up as a reminder to myself to stay in my lane.
A stroke is a brain injury and I had a massive one awhile back leaving me with balance issues and all sorts of communication problems. Not the least of them is an urge to ramble on incessantly from time to time and usually I bite the bullet afterwards... lol.
I should stay in my lane and design letting others give advice.

 

[chillin 10+ year member]

Without more info I really can't say. Generally an Ebp under 70 and optimally lower will indicate if a 4th is a good choice. Most 6.5's are hi-ebp and work in ported or 6ths. I've yet to design a 4th for the Rds-6.5's and hesitate to do so when finding that resonance I like (under 50hz) in the sealed chamber causes it to get so large its going to kill power handling. A 6th is going to be large for what it is regardless and you may have the space for 1 possibly 2 but without knowing what subs to use I'm unable to advise.

What if I went 8's? The rds 8 looks to have a good ebp for a 4th. You think there's enough airspace given my dimensions for 2 at a relatively flat response? SQL leaning towards sq. My other option would be 4 6.5s facing back, port side, but I've never seen anyone do subs back in a pickup before.