crazy sub

[cammedvtr]

well a little while ago my car got broke into and they pinched my sub smileys/smiley7.gif , so a friend of mine gave me a kenwood one to tide me over till i got another.

a couple of days ago i heard a loud bang when i went round a corner coming form the boot. i never noticed a sound difference and every thing was working fine.

today i decided it was time to tidy the wires up from the amp because i just slung the sub i when my mate brought me it.haha. as i lifted the sub out the boot i heard that bang noise again so i shuck the sub and it kept doing the same noise.

when i removed the sub from the box i found this...
http://i32.photobucket.com/albums/d41/awillerton/whatsthis.jpg

now i assume its some sort of resistor because its in the possie power lead. but why havent all the other subs ive even owned had one??? has anyone any ideas???? smileys/smiley4.gif

[Scott]

possibly a treble blocker, blocking the higher end frequencies to avoid killing it. Must admit if thats what it is i have never seen one fitted factory before?? Possibly fitted by your mate?

[KAMENi]

scott, you're right. it's an inductor, a coil, connected to keep the treble away from the sub. it "cuts out" frequencies with a 6dB/oct slope, with a value of 10.6 mH. i cant tell what frequency it's set on, i need more info on the sub

[cammedvtr]

cool people but i dont think my mate fitted it because he doesnt know his head from his arse.haha... anyway it works so its all good.. thanks for the comments people.. smileys/smiley2.gif

[KAMENi]

you asked "but why havent all the other subs ive even owned had one??? has anyone any ideas???? ", and we gave you the answer. it's not in standard package, you have to make your own

if you really want to know more about crossovers and stuff visit www.bcae1.com it has loads of stuff explained