Simple 12" Infinity Kappa VQ MidQ Plans

[lsiberian]

if you are limited on size and want to modify or even reduce the size of the box. I believe it can be done. Of course you will be sacrificing response if you shrink the size. Or modify the vent. The main thing is to keep the size of the vent as close to the original as possible and to maintain the folding of the vent.

I know there has been many questions on mods. I have even cut the size in half and the response is still great to 25 hz. You loose about 5hz though so be aware of that and the port speed can pick up depending on how you mod.

As always real world vs simulation are different and sticking to the original design is usually the best.

And I always defer to those more experienced. I just find this driver to be very useful and fairly versatile with this type of box.

 

[Sepen]

Just wanted to thanks Matt for the OC705, great guy alert!

thanks Matt.

 

[lsiberian]

Just wanted to thanks Matt for the OC705, great guy alert!

thanks Matt.

Where is mine. LOL JK

 

[Sepen]

Can someone please post a pic showing the OC705 installed on the back plate?
I am just a tad confused on how big the oc needs to be and whether it should cover the entire plate etc?

thanks,


Sam

 

[Matt34]

Can someone please post a pic showing the OC705 installed on the back plate?
I am just a tad confused on how big the oc needs to be and whether it should cover the entire plate etc?

thanks,


Sam

I glued a four inch strip of it wrapped in a towel directly behind the driver.

 

[lsiberian]

Can someone please post a pic showing the OC705 installed on the back plate?
I am just a tad confused on how big the oc needs to be and whether it should cover the entire plate etc?

thanks,


Sam

It should cover the entire brace behind the driver.

The goal is to reduce mechanical noise. So you want to damp the entire brace.

 

[sawzalot]

O K finally a little progress all pieces are cut and sanded ports are built boxes are started all parts are in hand to finish so heres a couple of pics so far..please click on each pic for a better view I did something wrong with photobuc again.

View attachment 7044 two ports with primer

View attachment 7045 two ports one box one dog.

View attachment 7046 two ports two boxes one dog.

View attachment 7047 when they come together.

Like I said free time is hard to find but when I get some I really like to work on this project.I cant wait to finish them up.

 

[sawzalot]

I'll get home early tom. and get some more done more pics as soon as I can Thanks again for everyones help..

 

[mike c]

somebody should seriously ground plane test this ala AVT/HTS

 

[Sepen]

Can anyone recommend some grills, I will have mine recessed, or a link that would show how I can make my own? thanks...have two grandchildren in the house and they have been known to stuff my HSU 3.3 ports. One can only imagine what they would do to a naked driver....

 

[sawzalot]

I am building two of these and only have enough OC for one box if anyone has some extra I sure could use your help I have searched locally for this item with 0 luck just shoot me a pm and we can work out the details Thanks in advance for any assistance...

 

[lsiberian]

I am building two of these and only have enough OC for one box if anyone has some extra I sure could use your help I have searched locally for this item with 0 luck just shoot me a pm and we can work out the details Thanks in advance for any assistance...

8lb mineral wool will work just as well and is way cheaper.

If I had the funds I would by my rock wool and send you some, but money is tight atm.

 

[Matt34]

Try the ats acoustics website. That is where I got mine from.

 

[Sepen]

Well,

First one is done, checking it out now. First impressions are that is has cleaner bass than the HSU 3.3 and not as boomy, it can rumble a room, but I am not convinced that is immeasurably better just yet. FYI, I am using the FMOD, FBQ 2496 and an EP2500 in bridged mode for now.

First manual readings with corrected values,

14 72.3
16 75.3
18 81.9
20 78.6
25 76.8
28 76.0
31.5 79.2
40 82.8
45 86.4
50 76.9
56 79.5
63 85.3
71 79.2
80 74.0

 

[lsiberian]

Well,

First one is done, checking it out now. First impressions are that is has cleaner bass than the HSU 3.3 and not as boomy, it can rumble a room, but I am not convinced that is immeasurably better just yet. FYI, I am using the FMOD, FBQ 2496 and an EP2500 in bridged mode for now.

First manual readings with corrected values,

14 72.3
16 75.3
18 81.9
20 78.6
25 76.8
28 76.0
31.5 79.2
40 82.8
45 86.4
50 76.9
56 79.5
63 85.3
71 79.2
80 74.0

Those are pretty good in room numbers. I suggest you eq the sub with REW since you have an FBQ. You probably don't have it cranked enough to tell a huge difference. The cops will be by later tonight. An EP2500 can drive 2 of those subs FYI.

 

[sawzalot]

My enclosures are done,just took delivery of an EP 2500 now I'm waiting on OC 705 to and then I will laminate the boxes and post up some pics.They look awesome as is but I want a different look.Thanks everyone for the great help and advice.

 

[sawzalot]

I just won a dcx on ebay it should be here friday 230.00 brand new in the box so now I need to get some cables and still laminate the boxes but other than the small stuff it looks like Ill have em cranking out thunder on Easter weekend Ill try for more pics today.Thanks All....

 

[lsiberian]

I just won a dcx on ebay it should be here friday 230.00 brand new in the box so now I need to get some cables and still laminate the boxes but other than the small stuff it looks like Ill have em cranking out thunder on Easter weekend Ill try for more pics today.Thanks All....

where you planning to sell the FBQ by chance?

 

[sawzalot]

where you planning to sell the FBQ by chance?

No I will need that along with my EP 2500 to power my two infinity kappa perfect subs.If anything changes in the future I will be happy to let you know.

 

[annunaki]

No I will need that along with my EP 2500 to power my two infinity kappa perfect subs.If anything changes in the future I will be happy to let you know.

You don't need a FBQ with a DCX. The DCX does everything the FBQ does and much more.

You can do at least 8 bands of Eq per output with adjustable "q" from .1-10.0 and nearly anyfrequency you want from 20hz-20Khz. You can also set limiters if needed as well as adjust input/ouput gain settings. It is an extremely flexible crossover too.