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<blockquote data-quote="sundownz" data-source="post: 7883727" data-attributes="member: 549523">As a speaker moves both up and down you must have adequate clearance for the desired level of excursion in the rearward direction behind the spider; otherwise the spider will smash into the top plate. Being that we are shooting for over 4-5&quot; p-p on these frames (depending on the size) -- we need to have 2-2.5&quot; or more of space behind the spider to the top plate.You also need adequate depth from the spider to the surround to ensure lateral coil stability (no ticking) and also to have enough cone depth so the cone doesn&#039;t rub against the spider at high levels of travel -- both 4 and 12-spoke frames are quite problematic in 10&quot; size when using the 8&quot; landing... and when using the lower landings you are limited by a smaller spider and less rearward clearance.So the summary is actually simple -- for the speaker to move more we need a taller basket //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif</blockquote>

[QUOTE="sundownz, post: 7883727, member: 549523"] As a speaker moves both up and down you must have adequate clearance for the desired level of excursion in the rearward direction behind the spider; otherwise the spider will smash into the top plate. Being that we are shooting for over 4-5" p-p on these frames (depending on the size) -- we need to have 2-2.5" or more of space behind the spider to the top plate. You also need adequate depth from the spider to the surround to ensure lateral coil stability (no ticking) and also to have enough cone depth so the cone doesn't rub against the spider at high levels of travel -- both 4 and 12-spoke frames are quite problematic in 10" size when using the 8" landing... and when using the lower landings you are limited by a smaller spider and less rearward clearance. So the summary is actually simple -- for the speaker to move more we need a taller basket [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] [/QUOTE]

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