briber500 Posted July 21, 2013 Report Share Posted July 21, 2013 I have 2 Pioneer 12's. They are 1000 rms and 3000max. they will be mounted inverted because port tubing is in the way so you can't mount normally. This is actually better because I maximize volume. Due to limited space my box is built with only 1.2 ft3 of volume. I wanted it tunned to around 38hz. I only have 4" round port diameter opening & tubing. To get that tuning I figured a port length of 18". My box is only 14" deep. My question is can I just 90 the tubing and add required length? If so I loose about 4" of port length with the 90, so do I add the 9" on the 90 or will it be shorter due to volume in the 90 thats not accounted for? How do I figure the volume of the 4" 90 bend to see if it affects the port length measurments? Does that even need to figured out? As long as box is tuned in the mid to high 30hz range Im cool with that. When current and vibration liquify solder and shake apart glass fuse in mydistribution block, wife says, "that's probably an indication you have too much!"My response is, "nope the older I get, the less I hear, so much more is required!" LMAO.... Link to comment Share on other sites More sharing options...
Jessica Posted July 21, 2013 Report Share Posted July 21, 2013 1.2cuft for both subs? I don't think that is enough for even one of those in a ported enclosure. Is that before you subtract the port displacement? Yikes. Rest in peace, walled 87 accord build log 03' Corolla build with AA Mayhem inside. My super random youtube channel and terrible camera work. Wiring comparison by CaptainzPlanetz Wire and fuse guide by Guest SyKo13 Link to comment Share on other sites More sharing options...
briber500 Posted July 21, 2013 Author Report Share Posted July 21, 2013 The box is a trapazoid. I believe I have volume figured correctly @ 1.20 per sub/partition and thats with nothing in the box. The box has a partition in it seperating the subs. So when tubing goes in the box, that tubing displacement should be deducted from the 1.20? Another question I thought of here, so both subs are hooked in paralell off one mono block amp should I have both subs in one air space or keep seperated? When current and vibration liquify solder and shake apart glass fuse in mydistribution block, wife says, "that's probably an indication you have too much!"My response is, "nope the older I get, the less I hear, so much more is required!" LMAO.... Link to comment Share on other sites More sharing options...
Jessica Posted July 21, 2013 Report Share Posted July 21, 2013 What model number subs do you have? I am guessing that box is just big enough for one 12. Rest in peace, walled 87 accord build log 03' Corolla build with AA Mayhem inside. My super random youtube channel and terrible camera work. Wiring comparison by CaptainzPlanetz Wire and fuse guide by Guest SyKo13 Link to comment Share on other sites More sharing options...
briber500 Posted July 21, 2013 Author Report Share Posted July 21, 2013 ts-w3002spl These: http://www.pioneerelectronics.com/PUSA/Car/Subwoofers/Champion+Series+PRO/TS-W3002SPL Im having a hard time finding recomended enclosure specs. Edit: Found it, woohoo! Specifications for Pioneer TS-W3002SPL Sub Watts MAX. Music Power: 3000 WattsWatts Nominal Power Handling: 1000 WattsFrequency Response: 18Hz ~ 700HzSensitivity: 89dBOhm Rating: DVC (Dual 2 Ohm Coils)Recommended Enclosure: 0.85 ~ 1.75 Cubic FeetDimensions: 13" x 8.1" (329 x 205mm)Mounting Depth: 7.3" (185mm) When current and vibration liquify solder and shake apart glass fuse in mydistribution block, wife says, "that's probably an indication you have too much!"My response is, "nope the older I get, the less I hear, so much more is required!" LMAO.... Link to comment Share on other sites More sharing options...
White Lightning Posted July 21, 2013 Report Share Posted July 21, 2013 The 4" pvc port tuning in my enclosure goes through 80 inches (40 inches for each enclosure) of port with 6 90 degree turns for a final tuning of 24 htz (all external port tuning) ... Everything seems to work fine ... Kenwood / HELIX / Linear Power (For The Love Of Music) / Brutal Sounds / OverKill Electric Co Questions About Sound Quality ?? Try Here ... Sound Quality, What does it REALLY mean ?? SMD SOTM Winner "White Lightning" 1997 GMT400 Chevy Silverado "The Green Dickle" 1994 GMT400 Chevy "Phantom Dually" Randal's 2007 Chevy Avalanche (we haven't named this one yet) Dylan's "Brutal" 17 Chevy Cruze RS Hatch Link to comment Share on other sites More sharing options...
briber500 Posted July 21, 2013 Author Report Share Posted July 21, 2013 The 4" pvc port tuning in my enclosure goes through 80 inches (40 inches for each enclosure) of port with 6 90 degree turns for a final tuning of 24 htz (all external port tuning) ... Everything seems to work fine ... What do you mean "external"? Tubing is outside of box? When current and vibration liquify solder and shake apart glass fuse in mydistribution block, wife says, "that's probably an indication you have too much!"My response is, "nope the older I get, the less I hear, so much more is required!" LMAO.... Link to comment Share on other sites More sharing options...
White Lightning Posted July 21, 2013 Report Share Posted July 21, 2013 Absolutely ... Kenwood / HELIX / Linear Power (For The Love Of Music) / Brutal Sounds / OverKill Electric Co Questions About Sound Quality ?? Try Here ... Sound Quality, What does it REALLY mean ?? SMD SOTM Winner "White Lightning" 1997 GMT400 Chevy Silverado "The Green Dickle" 1994 GMT400 Chevy "Phantom Dually" Randal's 2007 Chevy Avalanche (we haven't named this one yet) Dylan's "Brutal" 17 Chevy Cruze RS Hatch Link to comment Share on other sites More sharing options...
briber500 Posted July 21, 2013 Author Report Share Posted July 21, 2013 Thank you. I realized I posted in wrong section. This thread is probabally better suited in the port/enclosure section. Im going to reduce 4" pipe down to 2" and then I will only need 5" of length. *edit* The 4" ports that were cut in to the top of the prefab box from manufacturer, were stripped of my 4"pvc tubes I had installed and were resealed with original plugs. I then cut 2" holes in bottom corners on face of box were subs mount. With size and length of the tubes its tuned to 28hz. The B-Legit song that Steve plays in his woofer flex vid makes my front door windows shake like crazy! Its slightly uncomfortable when it hits the lowest part of the bass drop. Whats incredible is Im only using about half of what those subs can put out. I plan on getting twice the size amp so I can exercise the subs to their full potential. Im impressed so far cant wait to see them at full potential! When current and vibration liquify solder and shake apart glass fuse in mydistribution block, wife says, "that's probably an indication you have too much!"My response is, "nope the older I get, the less I hear, so much more is required!" LMAO.... Link to comment Share on other sites More sharing options...
notorious97200 Posted August 22, 2013 Report Share Posted August 22, 2013 You are saying that you will use a 2" pvc pipe, instead of a 4" one ? That is not enough port at all, even if you use 2 of them. Two 2" pipes are not equal to one 4" pipe. Be careful ! and yes, you need to substract port volume to the interior volume, or use externeal ports. What tuning do you want ? 28 or high 30's ? Personnally I always tune between 32 and 35 Hz. Good luck. black BMW X1 2.0 l 192 hp OEM head unit, Amplifiers : Audison AP 8.9 amp with integrated DSP and Ampere Audio 1200. Focal ES 100 K in front doors, and Dayton RS 180 for midbass under the front seats. 2 SSA DEMONS 10" subs, in a 2.6 ft3 ported box. SecondSkin Damplifier on front doors, and Luxury Liner Pro for the cargo area. Link to comment Share on other sites More sharing options...
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