It doesnt exist? well heres a link of 20 motors on a flat bench now to actually answer the question you have to remember they are not really that comparible, btl is now neo, and the tsns is an 86lb woofer. the tsns uses a slightly larger spider, i have no idea about the btl's but im sure the better comparison would be the tsns and the btl n3. i wish i had pics to upload this tsns so everyone could see, but being new to this forum i am not sure. why insult a man's company? he builds good subs, just because they are different doesnt mean they suck? Been a field of lies for 4-5 years and taking customers money and never giving them anything for it. I would not take anybody's money knowing good and well what was really going on and lying about my buildings, machine shops, and build facilities in 2 other states that I think I have.. He finally showed up with something..AFTER I said that...what 4 years later? They aren't different...he does not machine anything himself, he does not have his own machine shop, I'd surely have doubts if they even have a magnetizer, much less could machine and build a motor from raw steel.