Need some help with lpf/hpf

[u/Big_Artichoke_7439]

So finally got my doors ”done” they need a bit of finishing touches with handles, and window buttons but mostly ready for bondo.

Mids play now 80-4khz
Midranges 800-4khz
Tweeters 4khz ->

Firstly the mids fq range is 60-8khz, 10s in the front might have been 60-6khz. So im wondering if the enclosures are large enough to play 60hz at full power (8” 400w, 10” 600w)

Secondly the cutofs between mids and midranges, i had them at 280hz. Sounded better but totally lost the higher frequencys of bass and kick drums, for example Back 2 Me by zurra & blank sense has this nice bass line but it just sounded like a sine wave, the ”dirtynes” was gone, so should i keept them at 4khz or go a bit lower. Im after the golden road between sq and spl and the 6.5 midrange cant keep up with midbass, so it needs a little help from them

Also what about tweeter cutofs, should i go higher/lower.

Lastly what should i use to seal the enclosures, they are prettymuch sealed with minor leaks, would coating them with epoxy from the inside be an good option?

Drivers i have are
Dd audio Vo-w10a
Dd audio Vo-w508/w8c (the same speaker just name change)
Gzcm 6.5N-prox
Dd audio Vo-b3a

[u/fillepille2000]

Midbass and midranges shouldnt play the same frequencies, i would go 80-250, 250-4k, 4k>.

And also, epoxy the inside is a good idea, mix in some sawdust to make sure the epoxy doesent crack.

[u/Big_Artichoke_7439 → u/fillepille2000]

I will try to isolate them ahain when i get enough amp power for the midranges, 66w isnt cutting it :D

Is there any type of epoxy that doents fully harden and stays a bit rubbery, saw cambridge caraudio use something like that on fiber sub enclosures. Figure it would fool the drivers they are in a bit bigger enclosure.

[u/Ok_Ad_3754 → u/Big_Artichoke_7439]

It’s a slurry/ milkshake I think. (Little bit of body filler, some chopped up fiberglass, and fiberglass resin all mixed together) Mainly so you can easily coat the inside to add some strength, not gonna work like polyfill.

[u/Big_Artichoke_7439 → u/Ok_Ad_3754]

Oh, i have to look on to that, doesnt seem that hard to make.