Check out the SMD Store @!

Jump to content

Search the Community

Showing results for tags 'Tuning'.

More search options

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


  • System Of The Month
    • SMD FORUMS - SOTM sponsored by CE Auto Electric, XS Power, and Mechman!
  • General
    • SMD Official WcCarAudio Store - All SMD Products and MORE here!
    • SMD Official Amazon Store - All SMD Products and MORE here!
    • SMD Official eBay Store - All SMD Products and MORE here!
    • SMD Forums Technical Difficulty Area - have a technical problem with the site? let us know, we will try to fix it!
    • Tunez - All things music related
    • Security Center - Car/Home Alarms, devices, tactics, tips....
    • Air Ride / Hydraulics - Got Switches? Want Switches? Post here!
    • Suspension and Brakes (4x4, street drops) - Lift it, Drop it..STOP it!
    • Interior / Exterior / Paint - Detailing, washing, waxing,tricks of the trade!
    • Engine and Performance - Anything for that couple extra horses!
    • Wheels and Tires - The rubber hits the road here!
    • Member Rides & Builds -- Show off your whip, Show off your System!
    • Member Videos - Host 'em & Post 'em! System Vids / Off Topic
    • Just projects - Tons of SMD Builds here!
    • Off Topic - Random, Misc posts - the forum "Junk Drawer"
  • Equipment
    • General Audio - Can't find a category for your question? Ask here.
    • Pro Audio / Home Audio / Home Theatre
    • Head Units-Processors and Eq's
    • Amplifiers
    • Williston Audio Labs / OldSchool Stereo - Classic to Current Car Audio and Amplifier Testing Lab!
    • Amp Guts
    • Mid's and highs
    • Subwoofers / Enclosures
    • Electrical-battery- Alternators- Wiring
    • Second Skin Sound Deadening and Automotive Insulation!
    • Sonic Electronix - Great Selection Great Prices
    • DC Sound Lab - Big Bass on ANOTHER LEVEL!
    • XS Power Batteries / Chargers! (and other stuff too)
    • Mobile Solutions - Installer tool and training PARADISE
    • Sundown Audio - GREAT Amps/Subs! GREAT Customer Service!
    • Ascendant Audio Subwoofers/Speakers
    • MechMan Alternators and 12v Accessories
    • SKAR AUDIO - Performance Audio/Reasonable Prices!
    • CE Auto Electric Supply – Providing Solutions to all of your Automotive Electrical Needs
    • D'Amore Engineering - High Quality Car Audio Installation Tools & Accessories
    • - SMD / D'Amore Engineering Products (and more)
    • Pride Car Audio - Russian Manufacturer of Car Audio Equipment
    • Incriminator Audio
    • B2 Audio
  • WcCarAudio
  • System Design Knowledge Base
  • Fabrication, Fiberglass, Etc
    • Mark of C.A.F. (Car Audio Fabrication) - Fiberglass / Fabrication Custom install Tutorials & Techniques
    • Groundpounder2k2's Corner (Read Only Archive)
  • TOOLS and TESTING Devices
    • SMD Distortion Detector (DD-1) Topics
    • SMD Crossover Callibrator (CC-1) Topics
  • Competitors Corner
    • Car Shows
    • Competitors Corner
    • Team Discussion
  • Misc Stuff
    • Grown Folks Buziness....18+ Approved Members Only
    • Video Games (All consoles) Ratings, previews, demos......the latest
    • Computer Talk - News, technology, advice
    • Cell Phone Central - Sprint, AT&T, Verizon - All things Cellular
    • Big Boys Toys..(and girls too) dirt, sand, road, water.....discuss your toys here!
    • Guns and Ammo, etc. - guns, tasers, even lasers...all self defense weapons discussed here
    • Product Reviews - Post a review on a product you have first hand, personal experience with.
    • Tattoo Topics (and other body art) show off your tats! show off your piercings!
    • Political Arena - The one and ONLY place on this board to talk politics.
    • Help Wanted! (Job opportunities) - Need a job? Hiring?Know of a place that is? Post it. All fields welcome
    • Photo-Shop Gurus - Show off your photo-shop skills here.
    • Health and Fitness
    • Misc Electronics (non Car Audio related)
  • Misc. Manufacturers (Friends of SMD)
    • Rockford Fosgate – Car Audio for Fanatics (Read Only Archive)
    • Fi Car Audio Subwoofers
    • Maxxsonics (MBQUART, Hifonics, Autotek and Crunch) **** READ ONLY ARCHIVE
    • US AMPS / RE Audio - ****READ ONLY ARCHIVE
    • Kicker Car Audio! **** READ ONLY ARCHIVE
    • Audio Savings ****READ ONLY ARCHIVE
  • For Sale / Want to Buy
    • Want To Buy
    • Buyer / Seller Feedback
    • HOT Deals!
    • Premium Classifieds Section
    • For Sale: Car audio related equipment only
    • SMD Garage Sale - New and Used NON Car Audio Items
    • Trading Post
  • Online Dealers
  • Your Local Shop/Dealer & Special "Read only" forums
    • SPL Lab - caraudio and racing measuring devices
    • Audiotistics - Victorville, California - BEST SHOP in the High Desert!
    • Del Rey Customs - Innovative Solutions for Innovative People
    • Ground Pounders - Earth Shaking and still Driveable!
    • Performance Audio - Las Vegas, Nevada
    • Pulse Car Audio, Salisbury Maryland (Read Only Archive)
    • Michael Müller aka The Big Oki - Master Groundpounder!
    • Michael Hughes - AKA SPL2K
    • Defiant Audio - Smyrna Delaware (read only archive)


  • Off topic video's
  • Bass Demo's
  • Subwoofer Reviews
  • Installations
  • Tutorials
  • Build Series

Find results in...

Find results that contain...

Date Created

  • Start


Last Updated

  • Start


Filter by number of...


  • Start





Website URL







Found 53 results

  1. Hello everyone, I am in major need of understanding port measurements for slot ports with 3 common walls. I have built a few amazing sounding boxes in past and always guessed port length and got lucky considering I don't know anything about the math used to figure out ports. I have a Sundown SA 12d2 on a Sundown 1100.5 it is @1ohm and currently in a prefab box that sounds horrible. I am wanting to build a box between 2-2.5sqft as I've heard these subs actually need bigger than recommended. I'd like to tune between 27-33hz and require a solid bottom note and a flat curve that doesn't drop till well in the 100hz range. Width has to be 35" max and no less than 34" heigth max of 15" and max depth 16" Sub and port both face rear of trunk. I have both BassBox 6 Pro and Torres Tuning Calculator. Any help figuring out a box that hits the deep lows and has a strong full range will be considered. Also help understanding how to get the port measured and cut correctly. Any help understanding port ratio greatly appreciated as BassBox Pro always seems to give better designs with small width ports where as Torres I find bigger ports do better. Thank you for any and all help to tho that post suggestions!
  2. Lofty

    Help Tuning Box

    Building a box for 4 sundown E8's to go in the trunk to sit flush against the rear seats and port out the rear seat opening (ski pass). The attached picture has a rough draft of the design it is a angled box with dimensions of 36"width x 14"tall x 16"top depth x 24"bottom depth. Volume of each sub camber (RED) is 1.344ft3 and port area (BLUE) is 1.5" wide with a area around 18.75 tuned to around 33-34 hz. Mainly just need to know what happens to that tuning once it reaches the center chamber (with the front of the subs) and out the ski pass.
  3. Wantin2DropCheap

    box tuning and db numbers HELP

    I have Made a strong double floor/double baffle box with window bracing out of 3/4 MDF just a bit larger than spec . I am using white sewer pipe so I can run the sweep 90's and dual 4" precision port flares top and bottom for a single 12 in a test box and keep changing my tuning, I have a cheapo db meter on the dash while running all my tests. Here's where I need you guys because I'm stumped. So why when I make the ports longer (tuned lower) would my 30 to 35hz range numbers drop? also why when I shorten the ports (tuned higher) would 56-62hz range numbers drop? I also cant figure out why I'm so peaky I have some notes like 40hz almost always falls on its face. Tuned at 31.5 and 32 it dies but tuned at 31 it doesn't? (I'm talking a whole 8db) I also usually have a drop at 42Hz,43hz,and 52hz. I'm just lost as to why the numbers are so jumpy between tests. Why its a steady climb with drops and then back to a steady climb then drops etc. I start at 30hz and go to 62hz during these tests. I honestly always thought the low range to a point would gain at lower tuning while sacrificing some higher notes and vice versa. Can someone tell me from experience in a test box with meter is this normal and how do you decide on a final tune? Is there an easy way to rid myself of the random peaks and drops? Every time I change the tune some numbers go up and some numbers go down but not consistently on either end as you would think. It seems random. I love the 30-40 range Thank you in advance for taking time to read and respond. This place is the best. If anyone can set me straight it will be here.
  4. Wantin2DropCheap

    Frequency Range of Subwoofers

    I have 4 Powerbass 1204D 12" subwoofers which have a frequency range of 31-500hz and I'm building a custom box Manufacturer recommends 10 cubic foot box (ported) tuned to 34hz subsonic at 37hz?? which confuses me? My question is if I tune my 10 cubic foot box (ported) tuned to 32hz subsonic at 25hz. (24hz would be half an octave lower than tuning or the unloading point as I understand) Will I be asking for trouble? or am I ok, I have done a lot of reading and still not sure on this topic I like the lows, at the same time I don't want to toast my subs. Any advice or input will be appreciated?
  5. I had gotten bored and started making tones so I could tune amps. I made them all in Audacity. They are just simple sine waves that are very easy to make, but I see a lot of people looking for Tones/Sine Waves/Frequencies/Hz Tracks/etc so I figured I could upload some and help them out. All tones are recorded in MP3 format at 320Kbps. They include: Tones for tuning your system: These Sine Waves are 2 minutes long each 40Hz: 0dB, -2.5dB, -5dB, -7.5dB, -10dB: Download 150Hz: 0dB, -2.5dB, -5dB, -7.5dB, -10dB: Download 500Hz: 0dB, -2.5dB, -5dB, -7.5dB, -10dB: Download 1000Hz: 0dB, -2.5dB, -5dB, -7.5dB, -10dB: Download 3500Hz: 0dB, -2.5dB, -5dB, -7.5dB, -10dB: Download 5000Hz: 0dB, -2.5dB, -5dB, -7.5dB, -10dB: Download ___________________________________________________________________ Individual Tones: 1-100Hz. I have matched them the the tuning tone amplitudes so you don't need to readjust your gain for a competition. 1 full set recorded at 0dB 1 full set recorded at -2.5dB 1 full set recorded at -5dB 1 full set recorded at -7.5dB 1 full set recorded at -10dB These Sine Waves are 20 seconds long each. 1-100Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download Alternatively, you can download them in smaller zips to get the tones you need without downloading all of them. 1-9Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download 10-19Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download 20-29Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download 30-39Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download 40-49Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download 50-59Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download 60-69Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download 70-79Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download 80-89Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download 90-100Hz: 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download ___________________________________________________________________ Tone Sweeps: 1 full set recorded at 0dB 1 full set recorded at -2.5dB 1 full set recorded at -5dB 1 full set recorded at -7.5dB 1 full set recorded at -10dB Each track is roughly 45 seconds long. Tracks are: 10-80Hz, 10-20Hz, 15-25Hz, 20-30Hz, 25-35Hz, 30-40Hz, 35-45Hz, 40-50Hz, 45-55Hz, 50-60Hz, 55-65Hz, 60-70Hz, 65-75Hz, 70-80Hz 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download ___________________________________________________________________ Tones for setting filters: 1 full set recorded at 0dB 1 full set recorded at -2.5dB 1 full set recorded at -5dB 1 full set recorded at -7.5dB 1 full set recorded at -10dB Each track is 1 minute long each. Tones are: 80Hz - 100Hz - 125Hz - 160Hz - 200Hz - 250Hz - 315Hz - 400Hz - 500Hz - 630Hz - 800Hz 1000Hz - 1250Hz - 1600Hz - 2000Hz - 2500Hz - 3150Hz - 4000Hz - 5000Hz - 6300Hz - 8000Hz 10000Hz - 12500Hz - 16000Hz 0dB Download | -2.5dB Download | -5dB Download | -7.5dB Download | -10dB Download
  6. Paul Kadoshnikov

    Port design question

    In regards to the image, here is my design for 2 warden 21" subs. Box is about 17.5 cubes total after displacement and some bracing. Port will be about 12" wide by 22.5" (internal dimensions) long about 33hz tuning (270" port area). So my question is, I can leave the spot underneath the port without a separator wall, or I can add a separator shown on the right. Aside from adding bracing to the box, would it lower port tuning a little? (in the thought of the air will hit the divider and move up, as if adding some port length?) If the subs allow I may make the port slightly longer, but tuning would max go to 31hz even if i add 6 inches internally to the port. So I dont think I will extend it if the box allows. The port will be pretty close to both woofers. I intuitively don't think it'll affect port tuning, but would it cause any issues adding the separator almost up to the port? Or if anyone has some input on changing where the port goes. The sides are very close to the vehicle walls so a port to the side may not be the best. And there isnt room to port forward.
  7. I swore there was a section on lighting but maybe I'm wrong...anyways, about 2 years ago I ordered a set of 55w 12000k HID low beams from DDM tuning and I love them, and haven't had any problems...except one, THEY'RE EXTREMELY HOT. Like you could cook an egg on one! They're the Raptor Ballasts btw. And today I actually mounted them (took me 2 years) with the provided mounting equipment. Before they were just tucked away and one was wrapped in fabric more/less. (I stuck it in the battery cover...) They're now mounted in the open (still safe from everything) but now they can get a lot more air around them, however they're still really hot. In Volkswagen's whenever you disengage your E-Brake your lights go on at 66% (about) so they're always on, and because of the ballasts they're pretty much on 100% all the time. I don't really mind them being on all the time, even at 100%, but they're just so hot that I was wondering if that's normal and if I can cool them anyway....Thanks!! PS Sorry about the long
  8. Juan1988

    Amp tuning

    What should I set the knobs labeled "Width" and "Center" my previous amp didn't have these knobs and hit lowsend clean below 30hz but theven amp I have now hits dirty
  9. When getting a box is it more important to get the correct tuning or the correct size? either 32 hz but .25 too big or just right size but 37 hz, sub requests 32.
  10. I am hoping someone can explain bandpass and how the port tuning works. I recently had a friend give me a bandpass box with a kicker cvr 12d2 in it... the box measures 15"h 20"w 8. 5"d both sealed and ported side having these measurements. 2 tube ports 3.875" What i don't understand is way it sounds for the ports it has??? According to every port calculator iv used its tuned at 95hz! Am i measuring port frequency wrong or does bandpass create a different port frequency that is measured differently. Also can someone explain bandpass and how you tune one. I AM ASKING, CAUSE THIS BOX SOUNDS AMAZING DESPITE THIS QUESTIONABLE PORT FREQUENCY!
  11. Hi Im building a subwoofer enclosure for 2 12' type r subs (2kRMS) and wanted to know what size enclosure i should use. I have depth of 17 height of 15 and width of 35 max. I was thinking around 5.5 cubes I want to tune the box to around 32 hertz and want very low bass. What diffrence does a larger enclosure make over a smaller one? Also how big should i have my port i will be using a slot port but wanted to know if a port which its height is less and width is more is better than a port with a larger hight and smaller width. I was thinking a 4' wide and around 9 heigh is thw width fine? All help appreciated
  12. nmartinez18

    Need Help Tuning Sub

    I have a 12" Type R wired to 2 ohms with about 400-450 watts RMS Alpine amp running to it. When tuning the gain and bass boost, I have trouble finding distortion even with gain fully dialed. I was wondering if you have any tips to setting the gain, and listening for distortion.
  13. I took Andrew McCullough's recommendations for HDC3 & HDC4 box sizes & tunings here How do these specs look for an HDC3.118 (copper coil) being run of a FSD Audio FZ2600? 5.20 Cubes net 33.03 Hz tuning freq 9.66 Square inch port area per foot (8" x 18" aero) 18.5H x 36W x 21.5D (1 baffle on top 1 on both front and back). This is for music btw.
  14. 1.5" x 1.5" Thickness MDF Is the bracing blocking the aero port out too much? I was thinking about maybe removing the center vertical bar or the horizontal one, maybe even both.
  15. Here's my box design so far for a SoundQubed HDC3 18" Box Specs: 20.75H x 35W x 21.5D. Displacements used are .23 (Sub) and .05 (Dowel rod). 5.95 Cubic Feet @ 30.26 (Cubic feet might be slightly higher due to window). This also takes into account 3 baffles and port outside of the box. Port Specs: 19" total length 7.920" Inside diameter .240" thickness, PVC 12" outside flare diameter 49.24 square inches port area. Still deciding on an amplifier, should be anywhere from 1750-2250W. 1/0 OFC Big Three. 150 amp stock alt. XS Power battery to come later. I still might go slightly larger on the box, every 1" wider gives it .20 cubic feet to net. I know people use 45s in slot ports to smooth out air flow but should they be used in aero port boxes? If so should I just use a 45 for the corner next to the port or all 4 corners? Thanks guys!
  16. Need to build a box for 1 XFL1522 for daily listening. American Bass only gives specs for SPL boxes and they don't reply to any of my emails. It will be powered by a Crescendo Audio S1500.1. I also plan on putting in a .5" lexan window (roughly 12"x18"). I'll paint the inside with a Shellac based primer and oil based paint. My last box I built was pretty basic and consisted of 4 90 degree corners and a port bracing with sub and port facing the same way, wires ran out of port and no carpet. I've thought about maybe trying to brace the box more, any thoughts? Here's what I've been thinking so far. 4.0 cu. ft. after displacements 26-32hz port tuning ~55 sq. in. port area (slot port) 4 90 degree corners and 1 port brace Sub Up Port Back WINISD (26 vs 28 vs 30 vs 32hz @4.0 cu. ft.) Green is 26hz Red is 28hz Blue is 30hz Yellow is 32hz WINISD (4.0 cu. ft. vs 4.5 cu. ft. @28hz) Green is 4.0 cu. ft. Red is 4.5 cu. ft. Side Note: What should I use to seal my box considering ill be painting over it? I used all silicone last time but I've been thinking that I could just use a caulk instead and be fine. Also for the Lexan window would something like this be a good gasket? Ill also use silicone and some threaded inserts. Thanks for any help guys!
  17. dylan117

    4th order tuning?

    hey guys, im wondering how to determine the tuning of a sealed section of a 4th order. i know sealed boxes dont ecactly have a "tuning" but ive heard they have an Fs. so in a 4th order, how do you get one to play really low? like below 20hz. ive also heard its good to tune the ported section to the sealed sections Fs. ive had a good amount of experiance with 4th orders so im just seeing how much of this is true. im wanting to convert my current 6th order wall into a 4th order for 3-4 FI SP4 18s and want it to play down to 20hz or lower. is there a formula for determining the Fs (tuning) of a sealed section of a 4th order? thanks for any input!
  18. Andrew Storlie

    port size and shape help

    Ok so im set now on getting a dayton ultimax 15 for my sub stage in a 4cubic foot box tuned at 25hz... i want dual ports so that the box is symmetrical, so areos are the best option. Im trying to figure out how much port area i need for this sub. Problem is the tuning is so low that the port has to be long. Going a large port area makes it a really long port and making it smaller may give me port noise or not enough port area. Any help on this would be nice The sub im getting The box will be made out of solid red oak wood made for counter tops. 1.5" thick all around. I plan to use 1" round over on top and side edges and then do a nice dark cherry stain on it.
  19. BassAcoustics

    6th order bandpass

    This is my first 6th Order box I have attempted to create. For those of you that have the experience, do you guys mind telling me if this box looks promising? It's going to hold 2 Power Acoustik Mofo 15's. It is tuned to 32hz / 51hz
  20. Hey! i was just wondering if, and if it's smart to use different port sizes for each chamber in the enclosure? I have 2 of the same subwoofer and I have built a couple of boxes now and I have always wodered if I used different tuning for each of the subs and seperate them in 2 chambers if I get more full range bass and still the same high output and soundquality? I was thinking something like 30Hz for one and 40Hz for the other? Right now I have a box witch uses 2 subs in one chamber with 1 port. Will I loose any db by seperating them into chambers? Thanks for any answer
  21. Andrew Storlie

    wall port tuning help

    im building a wall for 4-15" HDC4s, 16.75ft^3 before sub displacment, tuned 37hz, 17in^2 per cube port area. each sub will be running of a BC3500d from crescendo. so far my box design... will simply sliding the port to the center and putting 2 subs on each side effect the tuning if i keep the port length and area the same? i like the look of center ports alot more then driver side ports......
  22. Hey Guys, excellent pieces of equipment, i just had 1 or 2 questions with regards to tuning them. Should i leave the EQ setting on my head unit flat at all times? would it mess up the input signal if i adjust it? other features like loudness and SLA should i leave those off too? (i don't use the Srtv) and for tuning the EQS, should i set back the frequency dial s to (0)? and as for the clarion i don't know if it has a built in Line driver so i have the outputs close to max i have the EQS set so that when music is playing it would flash at the 5volt indicators dynamically or should i get it to flash more steadily Any tuning tips would be great guys thanks in advance
  23. dstnparr

    Box for 2 AB HD 's

    I am getting 2 american bass hd 15's for my 2009 ford focus. I am going to have to build the box inside my car and I am not entirely sure what size to make the box. I was thinking that I would go with a 6.8 cu. ft. box after taking off the volume of the mdf and tuning the port to right around 32hz. Does anyone have any ideas that could improve my box or help me hit a higher spl?
  24. EraOfDiscovery

    Need Help With Port Length

    Well, here I am again up at 1 AM, this time on Christmas, about to lose my mind trying to design a box for my (2) SA-18's. I've got all the measurements entered into Torres (will list below) and have got the cubic footage and tuning I want, now my problem is trying to design this box on Google SketchUp, i know the port length is the measure down the center of the port and the physical port length is the measure of the actual wood used, but i can seem to transfer these numbers over too my design without it making me want to blow my head off. If I use the physical port length, the actual port length isn't right. If I use the actual port length, the port doesn't bend like it says it should. I don't know what measurements to use. If someone could just toss this box together on Google SketchUp and post a screenshot with the measurements shown, that would be SO helpful. Thanks, and Happy Holidays. -EraOfDiscovery (All wood is 3/4") Outer Dimensions Box Height 27.75" Box Width 48" Box Depth 27.75" Gross Volume 18.54 ft3 Net Volume 13.48 ft3 Port Height 26.25" Port Width 8" Port Length 25" Physical Port Length 16.25" Port Bends Yes Port Area 210 in2 Tuning Frequency 32hz Common Walls 3
  25. Can anyone tell me the freq. that the SA-12 single box design... is? According to my calculations, it is around 27hz, but I'm using a port calc, and I'm not even close to being a port expert. Thanks in advance!