boa12 Posted June 8, 2001 Share Posted June 8, 2001 i put this also under tech?, but then thought it might be better put here. thanks in advance. without getting into all the particulars, is there a general formula for calculating db loss away from the set point on a variable crossover on a sub? probably not considering my sub specs just give me 12db/octave initial, 48db/octave ultimate. f.e. if i set the cross at 80hz i figure it should be about -10db at 120hz. the tech at vel said though that it would be only about -3db.??? also, where does most LFE really lie? probably varies greatly by mix job, but for movie lfe i assume 60hz down. but what about music/concert lfe. figure that could go higher. ok the reason is my anal self just hates the idea of cutting off/losing LFE. but also want to lower that vel cross to jive better w/ the klf-30 fronts set to large on music. the classic bass manager's dilemma. thanks much. ------------------ Klipsch KLF 30 (front), KLF C-7, Cornwall I (rear) Velodyne HGS-18 sub woofer Monsterbass 400 sub interconnects & Monster CX-2 biwire & Z-12 cable Marantz SR-8000 receiver Sony DVP-C650D cd/dvd player Sony Trinitron 27" stereo tv Toshiba hi-fi stereo vcr Technics dual cassette deck Scientific Atlanta Explorer 2000 digital cable box Boa's Listenin Lounge: Klipsch RF-3 (front), RC-3, cheap little Technics (rear) Monster MCX Biwires Sony STR-DE935 a/v receiver Kenwood KR-9600 AM/FM stereo receiver (vintage 1975) Russound AB-2 receiver switch to RF-3 Teac PD-D1200 5-disk cd changer Technics direct drive turntable Sega Genesis game player Sub: None yet rock on! Quote Link to comment Share on other sites More sharing options...
boa12 Posted June 8, 2001 Author Share Posted June 8, 2001 nevermind, reading one of ray's old posts, doing some research, & actually doing some listening tests, i think i've answered both questions. my conclusions are that it's not a good idea to use the sub's crossover if you're attached to the receiver sub out which is also using it's own bass management crossover (usually 80-100hz which again is too high for most subs & large mains). & yes lfe does sound better if it's not cut-off also by the sub crossover. so i'm going back to setting the klf-30 fronts & c-7 to small (& forgoing their extra but interfering bass kick) for 5 channel stereo/music. but for 5.1 sources using direct mode so all channels are running full out. sorry for the momentary laspe of reason. or was it a glimmer of hope? ------------------ Klipsch KLF 30 (front), KLF C-7, Cornwall I (rear) Velodyne HGS-18 sub woofer Monsterbass 400 sub interconnects & Monster CX-2 biwire & Z-12 cable Marantz SR-8000 receiver Sony DVP-C650D cd/dvd player Sony Trinitron 27" stereo tv Toshiba hi-fi stereo vcr Technics dual cassette deck Scientific Atlanta Explorer 2000 digital cable box Boa's Listenin Lounge: Klipsch RF-3 (front), RC-3, cheap little Technics (rear) Monster MCX Biwires Sony STR-DE935 a/v receiver Kenwood KR-9600 AM/FM stereo receiver (vintage 1975) Russound AB-2 receiver switch to RF-3 Teac PD-D1200 5-disk cd changer Technics direct drive turntable Sega Genesis game player Sub: None yet rock on! Quote Link to comment Share on other sites More sharing options...
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