Interesting. I ordered them on aliexpress as one of the woofers in my blast was blown. They claim to be jbl bb2 woofers. Maybe a different version?

Your sound track test work on my mtx 5500 12s

Yo mystonermind420 where you been at, I miss your stuff

Hey man! Love your bass tests.

hi

@@doodle9 was sap

They used to. Idk if they're still in business.

@@speakerblowupmanlee5921 Ok, thanks!

Magnet size and coil size

@@anxiety1209 Good to know, but what's the algorithm like to calculate watt and ohms?

@@GalaxyYT. If you disassemble and tested enough speakers you'd eventually gain the ability to guess the power handling and quality of a speaker. I'll make this long story short as much as possible (When i say coil im referring to voice coil) 1 inch coil = less than 50w 1.5-2 inch coil = 50-150w 3-4 inch coil 100-300w And bigger one's than those would be more powerful but it's not very common to find such big coils on normal speakers as for magnet's all you wanna look for is the bigger it is the better (typically the height of the magnet) and try sticking a screwdriver in it the harder it is to remove from the magnet the better Also look for a extended pole piece and pole vent as those would allow for a taller coil and cooling aka more power. And lastly suspension. If a speaker is soft it would handle less power since it will move more than a stiff woofer and most likely reach mechanical limit easier. For ohm's you cant really guess that by looking at a speaker you'd need a multimeter with that. (Ik it's long but I've made it as short as possible i could make it much much longer:p)

@@anxiety1209 fair enough, i'm really a noob at speaker n subwoofer technology.

I took it out from a boom 2. Might show up on aliexpress in the future idk.

😂😅

Not really for the bass department. It doesn't have the xmax some of these do and its fs is pretty high

@@Luke-qs2cg the fs is only 2hz higher then the homepod woofer 53 vs 55 the 4mm xmax is also not to bad can be pushed a bit higher then that without problems.

Fs don't matter that much. The q values are what to look for when building drivers. It helps you decide what type of enclosure to use. As for the bass response, it depends on your design

@@speakerblowupmanlee5921 the general values of the driver and a good sim software if the best place to start. Though, yes, it's not that simple, I'm simply referring to it's ability to reproduce bass through the simplest mechanical constraints being the fs and xmax. Resonate too high and you can't play an octave under, not enough xmax and you simply can't move enough air at low frequency, these 2 things along with driver size give you a half decent idea of what it's capable of in the lowest register and at volume. A 4 inch moving 4mm isn't going to magically hit you with jaw dropping 40hz dubstep bass at 100db outdoors. Displacement matters when it comes to bass output. That's all the point I was making. The tcp115 is a great driver for sure, but it's limits have been thoroughly explored in a multitude of builds and it's most certainly not going to win any small speaker bass awards. For that I would look at more of the nd series which is already used in a couple popular models and kits or any number of various long throw small size woofers especially from the likes of tangband and peerless who have plenty of models in the smaller sizes for real low bass output. I'm surprised I haven't seen any peerless sds series woofers in any of these as of yet, or things like the tang band w3ho. Time will tell. Probably a driver price issue. And a box volume issue.