The V.B.S.S. DIY subwoofer design thread - Page 3 - AVS Forum | Home Theater Discussions And Reviews
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post #61 of 537 Old 12-22-2015, 08:35 AM
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post #62 of 537 Old 12-22-2015, 09:09 AM
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post #63 of 537 Old 12-22-2015, 06:23 PM
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Tell me more about this mystery sausage sub ?:flushed:
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post #64 of 537 Old 12-23-2015, 02:13 AM
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Quote:
Originally Posted by LTD02 View Post
the lowend appears to be a little higher on the infinity and the upper end would be a little higher on the pa380.
Are you referring to output or extension? Let me ask you this; let's say that you are trying to decide between the 1260 and the PA380 and that you have up to 10cu/ft per driver for potential enclosures. Would the PA380 be superior? Or would the little Infinity stay neck and neck?
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post #65 of 537 Old 12-23-2015, 06:38 AM
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Quote:
Originally Posted by Tip24/96 View Post
Are you referring to output or extension? Let me ask you this; let's say that you are trying to decide between the 1260 and the PA380 and that you have up to 10cu/ft per driver for potential enclosures. Would the PA380 be superior? Or would the little Infinity stay neck and neck?

neither driver needs 10 cubic feet. that would be just wasting space. I was referring to output. you will have some good mains with the 2226, so your midbass is probably covered ok. unless you are thinking about a whole stack of drivers, I'd look to something that is more capable on the low end. perhaps 460ho or even um18. either of those can work well in a ported cab that is about 10 cubic feet--all in.

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post #66 of 537 Old 12-23-2015, 03:51 PM
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One could get good results with 3 Infinities in 10 CF instead of one 18. Or maybe 2 in a quasi-LLT. More expensive than the PA460 though, which sort of brings you back to where this thread begins.
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post #67 of 537 Old 12-24-2015, 02:06 AM
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Quote:
Originally Posted by LTD02 View Post
neither driver needs 10 cubic feet. that would be just wasting space. I was referring to output. you will have some good mains with the 2226, so your midbass is probably covered ok. unless you are thinking about a whole stack of drivers, I'd look to something that is more capable on the low end. perhaps 460ho or even um18. either of those can work well in a ported cab that is about 10 cubic feet--all in.
Basically what I was trying to ascertain, was, let's say you have all the space necessary for any size enclosure, and that you are trying to find the best bang for your buck subwoofer, with minimal restrictions on size and or placement. (This is just all hypothetical of course) let's say that you have a room that is 16ft by 18ft and that you want to build something that can play reference or close to it. Let's also assume that money is tight, and that our hypothetical friend has an existing iNuke3000dsp and a budget of $300 to $400 for drivers. Would he be best served buying some of the V.B.S.S. Dayton PA460's or the PA380's, or let's also throw in the Infinity 1260. How exactly do these three subs differ from each other?' My primary concern/questions are:

(All of the below assumes that drivers are optimized in a potted enclose designed for Maximum output from 20hz on up)

1. Which has more output between 20hz and 80hz
2. Which has has a better measured response?
3. How much extension can be expected from these budget based drivers?
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post #68 of 537 Old 12-24-2015, 03:37 AM
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Quote:
Originally Posted by Tip24/96 View Post
Basically what I was trying to ascertain, was, let's say you have all the space necessary for any size enclosure, and that you are trying to find the best bang for your buck subwoofer, with minimal restrictions on size and or placement. (This is just all hypothetical of course) let's say that you have a room that is 16ft by 18ft and that you want to build something that can play reference or close to it. Let's also assume that money is tight, and that our hypothetical friend has an existing iNuke3000dsp and a budget of $300 to $400 for drivers. Would he be best served buying some of the V.B.S.S. Dayton PA460's or the PA380's, or let's also throw in the Infinity 1260. How exactly do these three subs differ from each other?' My primary concern/questions are:

(All of the below assumes that drivers are optimized in a potted enclose designed for Maximum output from 20hz on up)

1. Which has more output between 20hz and 80hz
2. Which has has a better measured response?
3. How much extension can be expected from these budget based drivers?

it kind of depends what values you want to put in for xmax, but with reasonable assumptions 9mm and 16mm and 500 watts into each (might be a little high power for the infinity but it is tough to say and 16mm might be a little low for that driver), this is roughly the max ouput. as you can see where the 18" high efficiency sub really does well is on the upper end of the bass, but even on the low end it appears to have the edge, roughly. the 18 is also quite a bit more efficient so it gets to any given spl with less power.


this is just one sub with no room gain.


extension with ported cabs depends on where you choose to tune them. these are 18hz.


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post #69 of 537 Old 12-24-2015, 05:40 AM
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post #70 of 537 Old 12-25-2015, 06:52 AM
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Depends on where you prefer to buy from, but I'd be paying $60 for an Infinity, and the PA460 is $90.
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post #71 of 537 Old 12-25-2015, 01:26 PM
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Thank you for this thread. I read your description and i'm interesting to build this 'little' box myself.

I read a lot of technical specs but how does the sub sounds in reality ?

I own a sub and the driver is very hard but fast but not very deep. So i'm a little concerned the driver is to slow and maybe the sound is spongy.

So please try to describe how does the sub sounds?
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post #72 of 537 Old 12-25-2015, 02:08 PM
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Quote:
Originally Posted by rhodesj View Post
Depends on where you prefer to buy from, but I'd be paying $60 for an Infinity, and the PA460 is $90.
True. I managed to get my (4) 1260w's for $47ea shipped.
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post #73 of 537 Old 12-25-2015, 05:15 PM
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Has this thread derailed from the OP topic at hand? Back on the V.B.S.S. My dad got an iNuke 3000DSP and headed to his place tomorrow to play with our V.B.S.S. build.
cuzed2, BacHolz and mtg90 like this.
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post #74 of 537 Old 12-26-2015, 02:44 PM
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Given the width of these things, a cinema-88 could be built into the top and it wouldn't look that funny.

Sent from my HTC One M8
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post #75 of 537 Old 12-28-2015, 06:11 PM
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This is exactly the type of simple ported sub plan I have been looking for. I will probably knock out the case tomorrow. Is there a parts list for the bit parts? For example you mention a full-length port. Where exactly did you get these?

Also is a Bash 300 plate amp enough to drive one of these? Thanks so much!
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post #76 of 537 Old 12-28-2015, 06:28 PM
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The V.B.S.S. DIY subwoofer design thread

Quote:
Originally Posted by csarneson View Post
This is exactly the type of simple ported sub plan I have been looking for. I will probably knock out the case tomorrow. Is there a parts list for the bit parts? For example you mention a full-length port. Where exactly did you get these?

Also is a Bash 300 plate amp enough to drive one of these? Thanks so much!

Get the flared ports from partsexpress for the amp I like inukes but if you want to use the bash amp it's at partsexpress to.
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post #77 of 537 Old 12-28-2015, 06:30 PM
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post #78 of 537 Old 12-28-2015, 11:00 PM
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The bash will work fine the iNuke would provide better limits and DSP but power wise it will be good to go. See my build thread...
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post #79 of 537 Old 12-30-2015, 06:53 PM
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How does it work that you can use shorter ports if closer to the back of the cabinet? Can this be modeled?
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post #80 of 537 Old 12-30-2015, 07:09 PM
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Quote:
Originally Posted by 383-s-10 View Post
The bash will work fine the iNuke would provide better limits and DSP but power wise it will be good to go. See my build thread...
This is what the dsp file looks like for the 20hz setting.



Some boost at 20hz, hpf at 20hz and I'm not sure what the DEQ is doing. The 15hz dsp file is more aggressive. If you are going to use the bash, probably best to stick with the 20hz port tuning.
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post #81 of 537 Old 01-02-2016, 03:22 AM
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I've been using sealed PA-18's since 2009, I blew 2 of them since 2009 so I only have 4. (I was planning on having 8 or 16 of them once I finish the 70kW amp upgrades. I'm upgrading as fast as I can, as always...)

I had the PA-18's activated in almost all of my youtube vids from 2009 to early 2013. Here are 3 old vids. (I only had 9 subs and 27kW back then...)

With my camera mic clipping like crazy like this you wouldn't be able to tell how loud this is or how dynamic/clean it is.
It is cop callingly loud I assure you. (With 4 of them I was able to crack some old single-sheet drywall near the fireplace.)
It definitely kicks you in the chest.

Last edited by BassThatHz; 01-02-2016 at 03:30 AM.
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post #82 of 537 Old 01-02-2016, 03:50 AM
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Found a better one...
You can really hear the room crying for its mommy in this vid. (2 Pac - Violent is almost ALL mid-bass, so it makes sense! )
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post #83 of 537 Old 01-02-2016, 03:56 AM
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A little o/t but, how would the PA380, or the PA460 or the Infinity 1260 work in a single cab truck in as large of an enclosure as is possible to fit either behind or under the seats? Are there any other subs under $100 that would give me similar performance?
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post #84 of 537 Old 01-02-2016, 10:07 PM
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Quote:
Originally Posted by Tip24/96 View Post
A little o/t but, how would the PA380, or the PA460 or the Infinity 1260 work in a single cab truck in as large of an enclosure as is possible to fit either behind or under the seats? Are there any other subs under $100 that would give me similar performance?
There are many subs in that price range, but few if any that are better.

Perhaps the Dayton Classic series might be better for a truck.
The HO-18 would be better, but it is MORE $$$
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post #85 of 537 Old 01-03-2016, 06:31 AM
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Originally Posted by chadamir View Post
How does it work that you can use shorter ports if closer to the back of the cabinet? Can this be modeled?

The cabinet wall becomes part of the port. You have to estimate the additional path length of the port as it makes a turn against the wall.
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post #86 of 537 Old 01-03-2016, 12:09 PM
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How would two of these compare to my two SVS PC-12 NSD?
Also, how is the output compared to the SI HT18 or UM18 in a sealed box?

EDIT:
Also one more question. I have the possibility to get a Inuke NU3000 without dsp, and a dcx-2496, both for the same price as a nu1000dsp.
Wondering if it is possible to set up these dsp settings in the dcx easy?

Last edited by haavardnk; 01-04-2016 at 03:46 AM.
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post #87 of 537 Old 01-04-2016, 08:40 AM
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EQ help/settings

I am playing around with a sub using this woofer acting as an "mbm" from 60-140hz and another playing 15-60hz. These dimensions don't work for me so I am trying to make some of my own

So far I'm liking it sealed around 4.25-5 cu/ft
QTC is below .7

Using 500w and the following EQ:
HPF - 60 (n2)
LPF - 160 (n2)
EQ - 70hz (Q2), 2 db

Able to get:
125 db @ 140hz
126 db @ 100hz
124 db @ 70hz (excursion maxes
120 db @ 60hz
116 db @ 50hz (hopefully won't be asked to go this low)

Are there other things in the EQ settings that others should know if they need to play around with designs?
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post #88 of 537 Old 01-04-2016, 03:00 PM
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The inuke also has dynamic eq. At lower volumes you can add more boost and it will reduce the boost as you raise the volume which will use the sub to its fullest all the time, not just at reference. Audyssey Dynamic EQ doors the same except you can't choose your own filters and rate at which boost ramps up/down.
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post #89 of 537 Old 01-04-2016, 04:55 PM
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Quote:
Originally Posted by corradizo View Post
The inuke also has dynamic eq. At lower volumes you can add more boost and it will reduce the boost as you raise the volume which will use the sub to its fullest all the time, not just at reference. Audyssey Dynamic EQ doors the same except you can't choose your own filters and rate at which boost ramps up/down.
So that's mostly what mtg did?

If so then this looks perfect!
Would match my 15-65 horn for like $150-200 on materials!
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post #90 of 537 Old 01-04-2016, 06:24 PM
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Quote:
Originally Posted by goonstopher View Post
So that's mostly what mtg did?



If so then this looks perfect!

Would match my 15-65 horn for like $150-200 on materials!

65hz and up you got it. Flex-12 it can go lower but will fill in that range your looking for and the eq is done like Pete is saying above.
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