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Hifonics

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Posts posted by Hifonics

  3. F150 Box Help!

    in Subwoofers / Enclosures

    Posted · Edited by Hifonics

    No, bear in mind that the pic is of generic dimensions, if you reaaly need a customized sketchup let me know.
    Ah, thanks buddy! I really appreciate it! I'll have to post some pics for you when it's done :)

    Is it really gonna make a difference having that 3 1/4" peice in there? Just curious!

  4. F150 Box Help!

    in Subwoofers / Enclosures

    Posted

    Sub forward port back?? most likely that won't help, Here is a suggestion port/ sub firing frontwards: Enclosure Specifications: Fb = 35 Hz Vb = 8.098 ft^3 External Height = 34 in External Width = 31.25 in External Depth = 20.75 in Port Width = 4 in Cut Sheet List: * All Dimensions in Inches. * Wood Thickness is 3/4 for all Parts. External Enclosure Parts: Front = 26 1/2 x 32 1/2 Front Internal = 25 x 32 1/2 Back = 31 1/4 x 32 1/2 Left & Right Sides: Side 1 = 19 1/4 x 32 1/2 Side 2 = 20 x 32 1/2 Top & Bottom = 31 1/4 x 20 3/4 L Port Internal Assembly Parts: Front to Back = 15 1/4 x 32 1/2 Extension = 3 1/4 x 32 1/2 Assembly guide (generic dimensions): SD-DB.jpg Left 0.05 cubic feet for bracing do some top to bottom and front to back cross bracing with dowel rods, port optimizations as well if you have the tools. Also 2.6KW calls for a solid electrical, that alone can reduce your output so look into that as well. Let me know any questions/comments.

    Thank you so much man! It looks really good! The extension you have written as 3 1/4 x 32 1/2. Is that a typo?

  5. F150 Box Help!

    in Subwoofers / Enclosures

    Posted · Edited by Hifonics

    ya? ok because when I first built my box I had people telling me sub forward port sideways. But I think my biggest issue is size. I think I'm choking that poor Mayhem lol. I should have built a bigger box but I was trying to keep 4 seats in the tuck... How much port per square foot should I have?

  6. F150 Box Help!

    in Subwoofers / Enclosures

    Posted · Edited by Hifonics

    I'm flexible. I can position the port up and sub up, or port front sub front. I don't want to fire back again because as it stands it does not sound as good as it could sound. As for rise, I don't know what its at right now.

  8. F150 Box Help!

    in Subwoofers / Enclosures

    Posted

    Hello everyone,

    I have a 4-door F150 and I'm looking to design a box that would sound good in the back seat. My sub is an 18" ascendant audio mayhem. Currently I have a 5.5cu/ft box behind the passenger seat. Sub forward port back. It just doesn't sound right... Not loud enough (compared to my 15" fi btl that I had... still a bit louder but not by much at all). I think the box is too small.

    I was just wondering if anyone had experience building boxes for trucks or would like to help me design a box that would be very efficient for my application. I have posted my max dimensions, amp rating and my sub's T/S specs.

    Thiele-Small Parameters

    18"

    Coils Dual 1 Ω / Dual 2 Ω

    Re 0.7 Ω / 1.4 Ω

    Fs 33.7 Hz / 33.2 Hz

    Qms 6.52 / 6.62

    Qes 0.29 / 0.27

    Qts 0.28 / 0.26

    Mms 307 g / 317 g

    Sd 1210 cm^2

    Vas 148.9 l

    SPL 94.8 / 94.9 1W/1m

    Bl 17.7 / 26.2 Tesla Meters

    Xmax 30mm (one-way)

    RMS 2500w

    Amp specs: (I am running my sub at 1ohm)

    RMS Power @ 4 ohms 850 watts x 1 channel RMS Power @ 2 ohms 1700 watts x 1 channel RMS Power @ 1 ohm 2600 watts x 1 channel Bridged RMS Power N/A Peak Power Output N/A

    In reality I'm probably seeing closer to 2k rms unclipped power.

    Max dimensions: 34H x 35.5W x 20.5D (D is for depth from front to back of the box)

    Thanks in advance for anyone who wants to help me... I'll also post a build log as I do this next one.

  21. Grinding Bit for Grounds

    in TOOLS and TESTING Devices

    Posted

    I was wondering if anyone knew of a drill bit that can be used to grind down the paint for a ground? I'm looking to make circular clean grinds to the frame. I saw steve use one in one of his youtube vids when he was installing HID's on his F150.

    I've been looking for a few days now and I can not find it anywhere!

  22. Your first amplifier - what was it?

    in Amplifiers

    Posted

    My first amp was a Bazooka 250. This amp had an option to be water cooled. I had it installed by a professional car audio shop..... they had the gain at MAX because they thought it was a volume knob. Bass boost was on. Bridged to 1 ohm (even though it was 2 ohm stable). You could cook eggs on that thing it got so hot. It never died.. I miss quality of the older gear.

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