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Active vs Passive x/o (please help) |
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Dub Specialist 
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 Topic: Active vs Passive x/o (please help)Posted: 21 February 2012 at 9:17am |
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hiya
i like too know your opinion's will a active x/o overide a passive x/o, for example ive got some old fane comps with passive's x/o in from 1.6kh so if i run them off a active x/o does it matter what frequency i change the active x/o at? will it make any difference b'cus the passive will overide the active? hope i make sense...
another example say you got some disco subs (what ever name) with passive's in it at say 120-150hz so again does it matter what i set the active at the x/o as the passive will win..
the reason why i asked for example with passives you can just plug in and play b'cus there pre set basicaly and thats what a mate of mine does , i lend some gear sometimes...as for me i run actives and some passives also jts pre amp...
so that was another reason i asked i think jts pre's tops/high's are set from around 3.5k n above so if i run them comps its too high them thay tend to distort around the 6-7k mark and sound nice from sed 1.6k in my opinion.........ive got a lot off testing to do before summer
 i know its not the best way to do it mix n' match actives/passive..so do it do any damage thanks......... Edited by Dub Specialist - 22 February 2012 at 3:42pm |
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Babylon Thay send the lies as fast as lighting and the truth by boat..as Linton Kwesi Johnson seh-Inglan Is a Bitch
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Earplug
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Posted: 21 February 2012 at 9:21am |
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If you leave them in, the passives will define the max/min frequencies you can use and the active won´t have effect. Better to take them out.
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Earplugs Are For Wimps!
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Dub Specialist
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Posted: 22 February 2012 at 3:39pm |
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so earplug yu saying basicaly the passive with overide the active? xover ive just tryed it from my jts-pre amp and the pre is overiding the passive the passive at from1.6kh / jts tops around 3.5kh-5kh, and doest sound no were near 1.6 its 3.5k an above defo..cheers..anyone got any more advise ...thank you..Edited by Dub Specialist - 22 February 2012 at 3:41pm |
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Babylon Thay send the lies as fast as lighting and the truth by boat..as Linton Kwesi Johnson seh-Inglan Is a Bitch
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lickweed
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Posted: 22 February 2012 at 4:07pm |
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if passive crossover is getting 3,5khz from pre(amp is getting and then passive) it will not play from 1,6khz,but whats the point of keeping passive crossover if you using active,i tried to explain as simple as i can
Edited by lickweed - 22 February 2012 at 4:12pm |
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My laptop is 24h on,when im log in dosn't mean im by computer!!!
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burningbush
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Posted: 22 February 2012 at 4:14pm |
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Always run active if you can- it sounds nicer. If it were me I would unplug/sell the passives...just re-read your post, so I see your problem is your "active" crossover is fixed at 3.5k, but you want 1.6k for your cds. Yes the high output should go to Bullet/ring radiator/etc. and your mid output will have to go through a passive to feed the comp driver and low mid/upper bass cab.
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Hud 'at ye bam
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Dub Specialist
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Posted: 22 February 2012 at 4:30pm |
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Babylon Thay send the lies as fast as lighting and the truth by boat..as Linton Kwesi Johnson seh-Inglan Is a Bitch
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Dub Specialist
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Posted: 22 February 2012 at 4:48pm |
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just thought if i go from the line/tape output from pre and go too next amp, i think that runs straight/full range/bypasse's built in x/o points, then i could use the comps at sed freq of passive x/o point...............
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Babylon Thay send the lies as fast as lighting and the truth by boat..as Linton Kwesi Johnson seh-Inglan Is a Bitch
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Earplug
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Posted: 22 February 2012 at 5:25pm |
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Right - I understood that the passives were at 3.5KHz and you were trying to drop them to 1,6kHz with an active - the exact opposite, but effect will be the same, ie nothing, as one of the filters is blocking the frequency you want...
 In any case, try the line/tape out and see what happens, but remember that you may have to reverse phase the comps (just to make things a little more interesting for you!  ). |
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Earplugs Are For Wimps!
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Nitz V1505
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Posted: 23 February 2012 at 9:54am |
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U could link the mid/hi main outputs and run them into an active crossover .
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LET THE BASS ROLL LIKE THUNDER
& THE TOPS LIKE LIGHTNING..... |
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burningbush wrote: