Not breaking in a woofer = bad voice coil?

[Telegon80 10+ year member]

well of course there are hence the 90% in my post...
my RF amp was made in the usa, but just cause its made in china doesn't mean its a piece of junk. its a piece of junk if the manufacture doesn't give a shit and says "make it as cheap as possible". the chinese don't make shitty products on their own, they make shitty products cause we ask them to.

it ultimately falls on the shoulders of QA and QC as well as how thorough the engineers were when they sent over their drawings/files.

From experience I've seen awesome factories put out shoddy products and when i looked into it in depth i usually found that they really had limited information on what was expected of the final product... aka sub-par drawings with not enough dimensional information, sub-par assembly drawings and instructions or none at all!

haha! yeah, but the parts to assemble it are 90% made in China //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

yes of course. part prices for stateside manufacturing is too prohibitive. Upside is that the communication will be somewhat better and you'll be able to visit the factories over the weekend but I still encounter problems with manufacturer's in the US.
Like I said, it falls on the shoulders of the Engineers to make sure the drawings have all the information, it falls on the shoulders of the QA managers to make sure all parts that arrive are to spec and in usable condition... and lastly on the shoulders of QC managers to make sure all finished products are inspected tested and in working order.

In China, sometimes Lead Engineer is also draftsman, and QA manager and QC inspector at the same time... and if your factory sublets to another factory then youre screwed cause you dont even know who is making your parts!

 

[pzaully 10+ year member]

Don't mean to hijack your thread, but breaking in a sub has little to do with its mechanical limits or it breaking. Nothing youve done would have caused the failure you mentioned.

I'd contact the seller/company and see about getting it replaced. Best of luck.

Pzaully

 

[trunks9_us 10+ year member]

yea man they must be defected cause my jbl gti subs one of them is defected and i thought i blew it up to lol maybe i did blow it up not sure but i know it doesnt work.

 

[helotaxi 5,000+ posts]

The sub will still move under its own power if the coils were wired in parallel and one coil was still good. That one coil will still move the cone.

 

[type[s5] 10+ year member]

The sub will still move under its own power if the coils were wired in parallel and one coil was still good. That one coil will still move the cone.

This was the case with one of my old type R's. Wouldn't power on when both VC's were wired, but powered on when only one of them were wired back to my amp.