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Silverado DDZ build
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<blockquote data-quote="hispls" data-source="post: 8439919" data-attributes="member: 614752"><p>DD subs should use a tight gap, but it's more likely he didn't use the right size coil. I build '05 sigs and can use 2 playing cards all around the pole piece to shim and that's "tight" compared to most stuff.</p><p></p><p></p><p>You got hosed if they are actually that tight. 2 sheets of paper is not enough space to allow for the coil expanding when you heat it and will likely become an issue rubbing if turbulence inside the box tries to push those cones unevenly. It's not "the gaps are too tight" it's that you used the WRONG COIL! My guess that even the one that "works" will not last long if the coil is as tight as you say.</p><p></p><p>If you are careful with a chisel or even a wide flat head screwdriver you might be able to pry up the spider from the landing and re-glue (assuming you didn't misalign the cone too badly). You'll need to pry off the dustcap as well which will probably look ugly when you're done. If you're very very careful you may even be able to chisel the surround off of the frame and keep that intact enough to re-glue the whole thing.</p><p></p><p>The takeaway here is that you should probably build them up from parts yourself (where maintaining proper alignment is much easier) or buy the correct parts from DD.... and that Tantric did not give you a right sized coil.</p><p></p><p>Do you have measurements of the gap empty? I'm guessing it can't be any tighter than the subs I've built and the problem isn't the gap, but a coil that is too large for that gap!</p><p></p><p>Quit screwing around, quit making excuses for Tantric, and just order the correct parts from DD already.</p><p></p><p>Also, what is your "rise"? Can you post an impedance graph?</p></blockquote><p></p>
[QUOTE="hispls, post: 8439919, member: 614752"] DD subs should use a tight gap, but it's more likely he didn't use the right size coil. I build '05 sigs and can use 2 playing cards all around the pole piece to shim and that's "tight" compared to most stuff. You got hosed if they are actually that tight. 2 sheets of paper is not enough space to allow for the coil expanding when you heat it and will likely become an issue rubbing if turbulence inside the box tries to push those cones unevenly. It's not "the gaps are too tight" it's that you used the WRONG COIL! My guess that even the one that "works" will not last long if the coil is as tight as you say. If you are careful with a chisel or even a wide flat head screwdriver you might be able to pry up the spider from the landing and re-glue (assuming you didn't misalign the cone too badly). You'll need to pry off the dustcap as well which will probably look ugly when you're done. If you're very very careful you may even be able to chisel the surround off of the frame and keep that intact enough to re-glue the whole thing. The takeaway here is that you should probably build them up from parts yourself (where maintaining proper alignment is much easier) or buy the correct parts from DD.... and that Tantric did not give you a right sized coil. Do you have measurements of the gap empty? I'm guessing it can't be any tighter than the subs I've built and the problem isn't the gap, but a coil that is too large for that gap! Quit screwing around, quit making excuses for Tantric, and just order the correct parts from DD already. Also, what is your "rise"? Can you post an impedance graph? [/QUOTE]
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