Notoriousj76 Posted November 4, 2011 Report Posted November 4, 2011 I finally came up with something that makes sense according to all of my research. For those who have seen my other posts, I'm learning. Give me some feedback please, it would be much appreciated. Working with an HCCA 15 d. the old one from the 90's. With a sundown SAE1200d v2. So the sub and amp are about percectlly matched. Hopefully this design handles the power well, it should according to what I've read but I'm no master, this is afterall my first 4th order. Front Chamber - 1.3 ft3 @ 51hz *will two 3'' pvc ports suffice? I have them laying around. Rear Chamber - 3 ft3 WinSD calculates flat respone from 37 to 77 hz which sounds amazing to me... very musical and a good daily setup. Hopefully I get some feedback on this one.
Ray Posted November 5, 2011 Report Posted November 5, 2011 About 6db down from doing it the other way. 1.3sealed 3.3ported with 45sqin tuned to 42 2008 California state record holder 157.2 Bassrace2009 California state record holder 157.0 BassraceRollin 50's 158.7db2009 King of Cali Bassrace2009 USACi score 160.5 @ 42hz
bumpinTL364 Posted November 5, 2011 Report Posted November 5, 2011 37 sounds a little high but that all depends on what type of music you want to listen to... masterbation is free, and even saves you money.sorry but someone had to say itsorry, Jimmy...beat you to it (no pun intended) LOLDON'T get a wife. Best advice I never got, and now it's too late My build: 12" DCON in a dorm room. New/current build: 8" woofer, custom amplifier block, fiberglassed speaker pods
RAM_Designs Posted November 5, 2011 Report Posted November 5, 2011 Honestly, if you're looking for a wide flat response, just stick to ported. Making a bandpass box flat from 30-70hz is going to result in a box that isn't very efficient compared to what a 4tg order BP is capable of. Ported will give you about the same output and will be easier to build while also taking up less space. Also, the group delay will be higher with the BP box as well. Ryan Miskin - owner of RAM Designs I have my PM's turned off, please email at <script data-cfhash='f9e31' type="text/javascript"> /* */</script> 2200+ designs since March 2011...
Ray Posted November 5, 2011 Report Posted November 5, 2011 My bp plays from 28-57. I prefer it over vented. For sure All depends on how its oriented in the car too 2008 California state record holder 157.2 Bassrace2009 California state record holder 157.0 BassraceRollin 50's 158.7db2009 King of Cali Bassrace2009 USACi score 160.5 @ 42hz
Notoriousj76 Posted November 15, 2011 Author Report Posted November 15, 2011 damn.... there is a lotta shit that goes into this. I keep hearing more terms I'm unfamiliar with... Turns out the speaker has a bad coil anyway so I'll be using the motor and turning it into an 8 and likely throwing it in a tline since I have more experience with them. Is it true to taper your line as it progreses by the way?
Notoriousj76 Posted November 15, 2011 Author Report Posted November 15, 2011 Peaks very high but doesnt appear to be flat on the chart... how about to the ear?
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