swervinburban Posted September 29, 2009 Report Share Posted September 29, 2009 (edited) Ok here goes. I was going to do a blow thru in my truck with three 95z 15's then I realized that 2 18's had almost the same surface area as 3 15's. So last week I sent my 2 15's back to DD to get upgraded and reconed to 18's. I wan't to have the box built before the subs come back but I'm conserened on how much port area I should run. DD calls for 6.5ft3 per woofer and 104 sq inches of port. I will be running the subs in around 10ft3 box so my question is should I still run the 208 sq inches of port DD recomends for 2 of these subs or should I run less port area because box volume is is smaller? Any advise will be appreciated wiether its for the amount of port area or the amount of volume for the subs. OHHH I almost forgot I plan on tuning the port to lower 30's. Thanks in advance everyone. Heres the specs DD has on the website for the 95Z woffers I dont know if this helps but I'll post it anyway SPECIFICATIONS Series Z95 Voice Coil Diameter 3" Magnet Weight < the Z Power Handling RMS 2000 Suspension 80mm Nominal Impedance .5 - 4.0 Ohm DC Resistance .5 - 3.6 Ohm Model Z9510 Z9512 Z9515 Z9518 Rec Box (cubic ft) 2 3 4.75 6.5 Port Area (sq in) 32 48 76 104 Port Length (inches) 22 21 20 19 Woofer Diameter 10" 12" 15" 18" Free Air Resonance Qts Qes Qms Vas Sensitivity Shipping Weight Edited September 29, 2009 by convectedfelon Quote Under construction soon to be: 2 DD Z9518's 8 lunar L1500's (500rms each) Secondskin Dampner pro 250a Mechman rhino alt 4 runs of 2/0 (installed) 4 batteries (installed) 6-5 1/4's, 2-6 1/2's, 2-4in all ma audio (installed) Link to comment Share on other sites More sharing options...
Gotloud555 Posted September 29, 2009 Report Share Posted September 29, 2009 Do you wants to do pencils and papers or box calculator to get the cuts? Quote Link to comment Share on other sites More sharing options...
swervinburban Posted September 29, 2009 Author Report Share Posted September 29, 2009 Do you wants to do pencils and papers or box calculator to get the cuts? I've been using a box calculator so far for all my calculations. Quote Under construction soon to be: 2 DD Z9518's 8 lunar L1500's (500rms each) Secondskin Dampner pro 250a Mechman rhino alt 4 runs of 2/0 (installed) 4 batteries (installed) 6-5 1/4's, 2-6 1/2's, 2-4in all ma audio (installed) Link to comment Share on other sites More sharing options...
Guest Cobrastang98 Posted September 29, 2009 Report Share Posted September 29, 2009 If you're gonna cut down the box size, then you're gonna want to cut down the port area also. What kind of power are u gonna be running per woofer?? Quote Link to comment Share on other sites More sharing options...
swervinburban Posted September 29, 2009 Author Report Share Posted September 29, 2009 If you're gonna cut down the box size, then you're gonna want to cut down the port area also. What kind of power are u gonna be running per woofer?? Well the amps are going to be 8 Lunar L1500's there rated at 500 watts rms a peice at 1 ohm on 12 volts, but we bench tested them at .5 ohms and at 14.7 volts(which is how I will be running them) and they each put out around 1100 watts. so I would say around 4k to each sub Quote Under construction soon to be: 2 DD Z9518's 8 lunar L1500's (500rms each) Secondskin Dampner pro 250a Mechman rhino alt 4 runs of 2/0 (installed) 4 batteries (installed) 6-5 1/4's, 2-6 1/2's, 2-4in all ma audio (installed) Link to comment Share on other sites More sharing options...
Boon Posted September 29, 2009 Report Share Posted September 29, 2009 (edited) 10 cubes... hmm I would do 165 square inches at about 20" long for a daily tune with those subs. EDIT: Never used a Z, this is based on 2515/3515/9515 experience... Edited September 29, 2009 by Boon Quote 10.x volts fo' life! Link to comment Share on other sites More sharing options...
smokeumtires Posted September 29, 2009 Report Share Posted September 29, 2009 a nice rule of thumb is 13-15 sq in per cube Quote Link to comment Share on other sites More sharing options...
Boon Posted September 29, 2009 Report Share Posted September 29, 2009 a nice rule of thumb is 13-15 sq in per cube True but DDs love them some port area... stiff suspension and all that good stuff. Quote 10.x volts fo' life! Link to comment Share on other sites More sharing options...
zfrerichs Posted September 29, 2009 Report Share Posted September 29, 2009 atomic's have stiff suspension and work well with mouse trap ports. i would go with what boon was saying, or pm bangin caddy he is a DD dealer and has a good amount of experience with DD subs Quote Roseville, CA Link to comment Share on other sites More sharing options...
smokeumtires Posted September 29, 2009 Report Share Posted September 29, 2009 so for a 12 2500 series off 1k watts wat would you recomend? 18 per? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.