ben29555

yellow line is in between the 2 its 5.5 cubes ported to 50 hz and 2.5 cubes sealed Gain SPL

ok but now im stuck between which of the 2 i should do the one tuned to 50 hz or the one tuned to 60 hz edit: a guy on smd told me this awhile ago and its how i designed my first box so you think i should just stick with that? or maby make the port tuned to 50 insted of 60 band passes are tricky rule of thumb for a 15 you need 1.5 cubes sealed and for an 18 roughly 2 cubes sealed 2-1 ratio is musical 3-1 both musical and spl 4-1 way to peaky and there usually tuned roughly to 60 hz so for your 18 you'd need roughly an 8 cube box 2 sealed and a 3-1 ratio you'd need 6 cubes ported then comes the guessing/trial error shit and when you play with port area and what not and play with shrinking the box to dial it in

heres my all of the boxes Lime Green: my current ported box Blue: the planed 4th order from above. 6 cubes ported, 2 cubes sealed, tuned to 60hz Red: 4th order after playing with sizing and tuning. 5 cubes ported, 3 cubes sealed, tuned to 50 Gain i read some guide to using Winisd and it said "When the line peaks above the flat 0 line, it tells you that there will be more power going to those frequencies within the peak than there will be elsewhere. When the line dips below flat, less power is produced. " So that means that when the lines are above the red flat line their will be less impedance raise and more power output. Red: i will have more power output from from 33 to 50hz they my current box (green) but slightly less from 50hz up. blue: i would have about the same range of frequencies as my current box (green) with more power out put. please tell me if my statements are correct. SPL Red: more lower end output then current box and slightly less 50 hz up blue: will be louder on higher end but not on lower end correct?

already have a ported box and i want to try something different so i figured a 4th order

i am aiming to get real low and loud i don"t what it to be real peaky but i don"t care much about the real high end. all the songs i have a listen to regularly the highest notes were around 55 hz. with the curves the way they are now do you wink i will get those results? or sound i change tuning or sizing of chambers?

bump

Gain Phase Plot SPL Group Delay

Can someone explane what these charts mean? i don"t understand what these mean but the first cart being the highest at 50hz makes me think that i won't be able to hit lows well. i listen to slowed music 90% of the time i just want loud and low. i don"t really care about anything above 50hz or so. box is a 4th order 2 cubes sealed 6 ported tuned to 60hz 90sq in. of port. if i am right about not being able to hit low how can i change that? lower tuning, make chambers smaller? (8 cubes is the most space i have so can"t make chamber bigger without making other smaller)

im pretty sure that the amp is only 2 ohms stable so get the d1 and run it series to 2ohms if you got space wold get a 15 or 18 for more cone area then sell the old kicker box

what program are you useing tp determine the box volume after all the extra wood on the inside for braceing?

i got another question wouldl it be louder it i have the port up or back if i have it up i can make the box a bit bigger

oo seems a little 2 expensive though wanna stay under 300 if possible

what do u mean by head room

probly a Audioque 1200d

plan on making a box for a box for a DC level 4 18" what do you think?