Jump to content

rgarrett

Members
 View Profile  See their activity

  • Posts

    31

  • Joined

  • Last visited

 Content Type 

Posts posted by rgarrett

  1. Need help with a 4th order bandpass box

    in Subwoofers / Enclosures

    Posted

    I just built a 4h order and its best to do a removable port so you can play around with the tuning until you find the right tuning for what you are trying to achieve. I thought tuning the ported side higher would result in a higher SPL score but it doesn't. So I would suggest you start out around 45-50hz tuning and go from there. From my testing so far I gained 3db going from a 60hz tuned port(No port plug) to 49hz tuning with the plug in. Now I'm going to try a port tuned around 43hz and see if I still increase. Be patient and do alot of testing to see when and where you gain. My 2 cents

    Thanks for the advice. I am definitely going to do the removable port. Would you go with a rectangle port or multiple round/aero ports? Also I will be using about 4k watts, is there anything I need to look out for or be aware of with that much power in a bandpass?

  2. Need help with a 4th order bandpass box

    in Subwoofers / Enclosures

    Posted

    if you're going for spl, we can't tell you port tuning, only a termlab can. start at 45 hz and change it up from there. go for 13-16 square inches of port area per ported cube.

    Very true, but how does the tuning in a bandpass work. For straight ported boxes you tune below your frequency. It is the same for bandpass? I have heard the tuning should be higher like 50+. Thanks for the help

  3. Need help with a 4th order bandpass box

    in Subwoofers / Enclosures

    Posted

    Hello everyone, I am in the process of designing a 4th order bandpass box for my 2 Sundown Zv3 12s. This build will be mostly for SPL numbers but would still like to be able to play some music with it. I talked to Sundown and they said to use 1 cuft per sub for the sealed portion with a 3:1 ratio. So I have a box design with a sealed portion of 2 cuft and a ported portion of 6 cuft (all after displacement). The subs will be inverted firing into the sealed portion with the motor in the ported portion. The ported side will be 41" w x 20" d x 17" h (outside dimension). My question is about tunning. What should I tune the ported side to? Should I use a large rectangle port or round ports or aero ports? What port area per foot should I use? This is going in the trunk of my 2007 Ford Focus. The car peaks around 48hz. Any and all help will be greatly appriciated. Thanks.

  5. deleted.

    in Subwoofers / Enclosures

    Posted

    Just made the order last night, decided to go with a single 18" sundown Z v.3D2 for starters. Pretty excited to see how things work out, only 18" I have owned so far was a elemental designs 19ov.2 but that thing was a pos lol. Made this choice because it was only 40 bucks more then the 12" & over double the cone area. Now just need to find a nice amp to throw some juice @ 1 ohm to match.

    The 18 Z v3 sound really good. I heard two in an Avalanche and man were they loud. As for an amp, I really enjoy my Powerbass XTA 5000d and the Sundown NS-1 is pritty awsome too.

  6. deleted.

    in Subwoofers / Enclosures

    Posted

    What kind of frequency did you pull that number at? Also what kind of box tuning? Just wondering. Also how do you like how the Z sounds for daily? I really loved how the rd audio alpha sounded, it hit low to high bass with amazing precision and got pretty damn loud daily for a single 15. The z came across my mind a few times as well when I was looking through the sundown options.

    It was @ 48hz in an SPL burp box. I also just got my music box installed with 1 Sundown 12" Z v3 and let me tell you it is amazing. On music I am doing a 149db. The sub sounds amazing and would recommend if for daily play all day long. It is so load on music that I just broke my passenger side mirror, just fell apart. :)

    Im just not sure if the single 12" will be able to do those numbers high 20z - low 30hz range in a rex. Thing is wicked hard to make hit lows notes. I thought I did really well with the single 15 off the shitty planet audio amp but just wasnt enough to keep me happy.

    Check out the videos of my car:

    Burp Box:

    Music Box:

  7. deleted.

    in Subwoofers / Enclosures

    Posted

    I would recommend going with 2 Sundown Z v3 12" subs facing up with one large aero port facing backwards. I am using one Z v3 12" in my ford focus trunk car on a PowerBass XTA 5000d and hit a 152.4 in the kick on ~3200 watts. These subs are great and will take whatever power you want to push to them. Just my two cents. :)

×
×
  • Create New...