Recone & enclosure modifications... it's getting closer to my goal

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Well... I changed the enclosure net volume for my BL-18 by -.5ft3 and if it gained I cannot tell. I'm still getting that sound at 44hz and above. I'm throwing darts at this point... lol. This is uncharted territory for me, I suppose I might be asking more from my sub than it's got possibly... idk... I'm clamping well above rated (3000+) and even with the additional spider it's possible it is well past the limits. I'll try another -.5ft3 change... my tuning will be around 42.5hz then so if this won't let me burp at cabin frequency (47hz) I think I've passed the subs mechanical limits. Everytime I downsize the box it lowers the impedance around tuning so I might negate the changes with additional power anyways. It looks like .5 rising to 1.4 if I go .5ft3 less on volume but hell... I'm gonna find out...
😂

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The volume change has worked, I still coil tap around cabin frequency but am able to get closer to 47hz than before. I'm hoping another .5ft3 might get me there. With the volume/tuning change I'll probably clamp more power at that frequency (47hz) so I might be chasing my tail... we'll see.
The coil tap starts at 44hz now instead of before the change at 42hz... from a 150.8db to 151.51db with only a small volume (.5ft3) change and consequent tuning change has me wondering if I might get lucky and break 152db with another identical change.
Testing, testing... but it's getting hard to shrink the enclosure anymore so I will have to be creative.
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So you don't actually listen to music? Just tones?
Omg... it's a daily... of course. I just change levels and x-over points for metering.
Who listens to tones only?.. I meter it with tones, listen to mainly old school rock/metal and some old school rap but really anything. I do try to avoid "whale song" at full volume... I kinda want this sub to last long enough to sell eventually after the Platinum 18 gets installed, For now I'm chasing numbers with the same enclosure and having fun doing it trying to maximize db's.
 
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Holy Port!
I think I found my max volume to be able to burp at cabin frequency... around 6.2ft3 and this BL hangs barely. I'm just careless with this FI anymore and don't care, I'm gonna send it I think and soon... 151.85db without the aero tonight while testing, maybe I'll lose a touch of volume before I attend another event but once the Aero/RS 18 goes in there (redesign) I will be around 5.75ft3 with a spread of 35hz at 5.6ft3 or 5.9ft3 around 42hz depending on length.
The flare is big for sure...15.75" externally flared... I like it.
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Should be a nice easy design, adjustable from 35hz to low 40's... time to get busy
 
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I installed dual 1/0 for the main run today after double power/grounding almost everything along with a dual lug on my 250A Alt, let me say 1st... "What?... you know better"...****user report**** just driving around on music it's a noticeable gain after just a power wire upgrade. Duh!... a single run of 1/0 for clamping 3K+?... now it is a different animal altogether and loves those nice moments when it outputs... 152db was the goal and I'm close... barring a failure or brain fart it should be there now.
Time to incorporate an aero into the mix and see what happens...
 
I might hold off for a bit putting the Resilient Platinum in there, I'm still finding out what I can pull out of this Bl.

18771

18772


I screwed up and forgot to vent the cabin on the 1st run, it managed a152.2db sealed in the kick.
Time to test and tune now.
 
I changed tuning then forgot to sweep last event, 152.4db still... clamped 3500 watts in no wall 7k, 3k stock I managed a 151.6db 2915 watts clamped.
I feel it was pretty much plateaued with the Fi without a meter and a bunch of testing so...
I pulled the Fi out and installed the Resilient and lowered the tune mid-30's. I like it so far after a day.
My dash/firewall is flexing and misaligning the fan for the AC/heater under the dash so it screams/whines until I wrench on it to realign the fan with the firewall mounted half of the heater box. This tin-can "Isuzu Passport" sure don't like the stronger lows now.
Meh... It might be a gain...
🤷‍♂️

I think im clamping less with more output too... It's hard to get it under 13v
The output made my teenagers eyes snap open... & he's used to the bl
 
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I've had a couple demos of the entry level Resilient subs and they were impressive, I can only imagine the Platinums.
I'm an idiot for waiting so long to drop it in there, it's been decorating my living room for 3-4 months now. It seems to take my power no sweat... on that note I've heard of crazy clamped numbers without fail but even if I'm clamping 2500 or less it sure seems to have gained to the senses. Oldest complaint out there... "it feels louder but meters lower"... there's a Friday get together locally so I'll find out then.
Hell... it's only the second day & I haven't even played it today.. that lil' (72lb) woofer still needs to be loosened up a bit but even now I'm a RS Platinum fan. That BL I had was nice but this joker is in another league.
 
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I'm an idiot for waiting so long to drop it in there, it's been decorating my living room for 3-4 months now. It seems to take my power no sweat... on that note I've heard of crazy clamped numbers without fail but even if I'm clamping 2500 or less it sure seems to have gained to the senses. Oldest complaint out there... "it feels louder but meters lower"... there's a Friday get together locally so I'll find out then.
Hell... it's only the second day & I haven't even played it today.. that lil' (72lb) woofer still needs to be loosened up a bit but even now I'm a RS Platinum fan. That BL I had was nice but this joker is in another league.

I'm very curious to see some numbers
 
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