Mike's DIY 13av.2 PR subwoofer

[mike c]

the driver:
elemental designs 13av.2 13" subwoofer
28.75mm xmax
http://www.edesignaudio.com/product_info.php?t=2&products_id=554

the PR:
TC Sounds 18" VMP passive radiator (now called Audiopulse VMP)
40mm xmax
http://www.audiopulse.com/products/passive-radiators/vmp

 

[mike c]

the general idea til i actually receive the PR:

23 x 15 x 38.5 (if possible, i'll go 22 x 15 x 38 or smallest i can go)

1" MDF

black things are supposed to be air pockets inside put there to kill enclosure volume and keep the weight heavy at the bottom and back ... i can fill up those pockets with "bracing" to add more weight.

and i will also add bracing around the drivers to kill some more volume.

 

[Warpdrv]

Hey, I'm not sure I gave you authorized rights to that proprietary set of pics, that is my top secret pool table buddy...

That design looks pretty good...

 

[mike c]

Hey, I'm not sure I gave you authorized rights to that proprietary set of pics, that is my top secret pool table buddy...

That design looks pretty good...

haha. your pics will have to do til i can get my own shots (i actually didn't notice it was a pool table)

to the other guys who dont know what's going on ... i bought one of warpdrv's PR's ... [good seller!]

 

[adk highlander]

All hail the new Sub King. I am in awe.

 

[annunaki]

How is the build coming on this setup? How does the driver model in a passive radiator system?

I hope to purchase the necessary MDF for my JL 12W7 home sub build in the next month here or so.

When I build it, I will post all the pics

I hope to see your progress here.

 

[mike c]

All hail the new Sub King. I am in awe.

not a sub king yet but thanks!

How is the build coming on this setup? How does the driver model in a passive radiator system?

I hope to purchase the necessary MDF for my JL 12W7 home sub build in the next month here or so.

When I build it, I will post all the pics

I hope to see your progress here.

im waiting for the PR to arrive so I can measure actual dimensions of the PR. i want to go as narrow as possible, that and the fact funds are a bit tight. so ill wait for the PR to arrive before I buy the MDF. and then wait for the box to be finished before I buy the amp. i'm looking at either the Behringer EP2500 for a bridged mono 4ohm of 1600w OR d-sonic class d amp for 1000w at 4 ohms. (warpdrv posted that link, now i cant get these amps out of my head)

model? i dunno ... haha, here's to jumping into the DIY world head first blind folded seriously though, i modelled a slot ported box, but discovered that that was really too much trouble. so i bought warpdrv's PR without thinking. so i'll have to make it work no matter what.

did you see my helper?

 

[bandphan]

the general idea til i actually receive the PR:

23 x 15 x 38.5 (if possible, i'll go 22 x 15 x 38 or smallest i can go)

1" MDF

black things are supposed to be air pockets inside put there to kill enclosure volume and keep the weight heavy at the bottom and back ... i can fill up those pockets with "bracing" to add more weight.

and i will also add bracing around the drivers to kill some more volume.

google skeetch? looks good, ill enjoy following this one.. Are you posting at hs?

 

[mike c]

yup, google. first time to "sketch" anything too

what's hs?

 

[bandphan]

yup, google. first time to "sketch" anything too

what's hs?

looks good, ive been playing around with it for a couple of weeks now,(using the pic import to scale out the new dedicated ht room) pretty powerful for a freeware app.

 

[mike c]

there's a pic import? haha ... i drew all that from scratch ... i wished i could scan my drawings to import.

what's hs btw?

 

[bandphan]

i was taking pics from other rooms and importing them, adding furniture and accessories to get a depth scale of what we want for ours. Home theater shack

 

[mike c]

yes, i did make a thread in the DIY subwoofers section there as well.

do you use bandphan there? i use mike c too there.

 

[bandphan]

yep, ive been a lurker though... Ive been wanting to do a sub build but havent educated myself enough.

 

[flippo]

Question

I am finally asking a question I've had for awhile, why so many subs? Just curious!

 

[mike c]

I am finally asking a question I've had for awhile, why so many subs? Just curious!

well they do go to different rooms others flip through speakers, cars and what not ... i flip through subwoofers

pairs always sound best in terms of frequency reponse linearity.

if i do finish this DIY speaker, it will make this HT have three LFE subs

 

[sparky77]

your little boy's gettin big, pretty soon he's gonna be helping with the building projects.

 

[mike c]

your little boy's gettin big, pretty soon he's gonna be helping with the building projects.

hopefully i won't need to DIY in the future and afford to just buy stuff off the shelves

but it will be fun to have my boy watching stuff with me. it's getting pretty hard to convince the wife to watch stuff with me

 

[sparky77]

Hmmmm. Guess I'm being a bad influence on my 6 year old step son, I was putting together a dual 18" Horn sub for my commercial system and he was asking what corner of the livingroom we were putting it in, then we get in the pickup and I put the pedal down, and he tell me to go faster. Geez, what does it take to impress kids these days.

 

[mike c]

i cant imagine one day driving slowly just to be a good example for my son. hmm, i have a heavy foot as well.