6TH Order Bandpass for HDC315-A Coming SOON!

[Fuknmovin 10+ year member]

Well here is the custom ordered 1" thick cabinet grade MDF I orded for my latest build, this is going to be a MONSTER I hope! I got 80Inches to design it for me as I have no experience with bandpasses but really wanted to get the most out of my sub. the design is going to look something like this below but I am not sure how I will place it in the truck either ports up or possibly to the side or rear, I will try each to see what works the best and final install it after testing. this is going to replace my current setup whichis a 4cuft tuned to 40Hz with three 4" aeros port up sub at 45* forward that sounds good but I want more! I should have at least most of the build done by sunday evening as I will be out of town Sat but I will keep you all posted as to the progress and vids will be posted when finished. This is going to get around 3500-4000 watts so it should POUND!

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[Villeza1 10+ year member]

Same boat, no experience with band pass boxes. But an AQ HDC3-A 15" on 4k will be pretty d@mn loud. I'd do 3k not 4k tho. All the best

 

[Fuknmovin 10+ year member]

Yeah, I will likely keep it at 3500 but I think it'll take it though as long as 80 knows his stuff! Have you seen the build that Thors hammer has been doing?

 

[Twisted_0912 10+ year member]

nice i cant wait to see this. did he design it for free? if so im gonna have to hit him up, i really want to try a nice 6th or 8th order. i have no idea how to design them though:crap:

 

[jmanpc 5,000+ posts]

Isn't a 6th order more like a ported box firing into a ported box? Not just two different ports with different tuning and a woofer in the middle? Looks like it'll add up to nasty cancellation to me.

 

[Mr. Slate 10+ year member]

Not as easy as you think.

 

[80INCHES 5,000+ posts]

Isn't a 6th order more like a ported box firing into a ported box? Not just two different ports with different tuning and a woofer in the middle? Looks like it'll add up to nasty cancellation to me.

parallel tuned

wat u talking about is series tuned

80

 

[Fuknmovin 10+ year member]

Hey there he is! Thanks again, I will have it built soon!!

 

[jmanpc 5,000+ posts]

I still don't understand how the ports will be in phase with one another. I'm not hating or anything, just confused.

 

[Fuknmovin 10+ year member]

One is for the ported chamber behind the sub and the other is a "loading" chamber for the front of the sub if I understand it correctly, the two chambers are tuned so they work together to produce the THUNDA! LOL! I will find out tomorrow how it works hopefully!

 

[Mr. Slate 10+ year member]

They're tuned to the same frequency?

 

[Blue Fury 10+ year member]

They're tuned to the same frequency?

Absolutely not, take a look at the sketch

 

[Mr. Slate 10+ year member]

Can you explain what are the two frequencies?

 

[mlstrass 5,000+ posts]

where does the sub go in the drawing? What's the advantage to a 6th order?

 

[Fuknmovin 10+ year member]

Well from what I understand they are tuned together to resonate together and create the sound production you desire, I could be wrong though since I let 80Inches design it and not myself as I only know they are extremely efficient in their tuned frequency range, more so than a std ported enclosure, if done correctly. I got a few pieces cut tonight and should get the rest cut tomorrow and start the glue and screw process! The sub goes in between the two enclosures with the magnet assy going in the larger cavity. I have seen a few of these type of boxes do some serious damage with even a small sub so I know they work if you know what you are doing.....I don't here, but I am sure 80 does!

 

[jdawg 5,000+ posts]

they are tuned to different frequencies, from what i hear they can be peaky, but I never played with one

 

[mmouse57 10+ year member]

the sub fires into chamber#1 that pressure which is tuned via the port effects the tuning of the low end or chamber#2

these boxes are made to play a really narrow freq band but yeild a very nice +db boost at the tuned freq of chamber1 and 2.

do it wrong and oyu have a mess for sound. these boxes are very boomy sounding if oyur into tight acurate bass 'SQ lovers' this box shouldnt ever be a thought in your head, but they can prodice some serious SPL in the freq band if its tuned right //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[80INCHES 5,000+ posts]

the sub fires into chamber#1 that pressure which is tuned via the port effects the tuning of the low end or chamber#2
these boxes are made to play a really narrow freq band but yeild a very nice +db boost at the tuned freq of chamber1 and 2.

do it wrong and oyu have a mess for sound. these boxes are very boomy sounding if oyur into tight acurate bass 'SQ lovers' this box shouldnt ever be a thought in your head, but they can prodice some serious SPL in the freq band if its tuned right //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

agreed

80

 

[bigbangtheory 5,000+ posts]

So I guess if the design is straight and you build it right, then it should stuff your balls in your anus!

Good luck!

 

[Fuknmovin 10+ year member]

Lol! Uh?