how to implement bi-amping wiring inside top cab |
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bob4
Old Croc Joined: 29 February 2004 Location: Finland/Germany Status: Offline Points: 1843 |
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Posted: 09 June 2017 at 10:22am |
I have a hi/mid cab with built in passive crossover. I want to add a bi-amping input by adding another 4-pole speakon, wiring straight to the drivers. My question is, do i need to add a switch to disconnect the passive crossover when i bi-amp, or can i just leave it as it is?
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cravings
Old Croc Joined: 30 January 2007 Location: Ireland Status: Offline Points: 7442 |
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the switch is a bit of work. you need a 4pdt switch. do you want to do this permanently or do you want to be able to switch back? you could just remove or totally bypass the passive crossover by just wiring the drivers straight to the nl4.
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bob4
Old Croc Joined: 29 February 2004 Location: Finland/Germany Status: Offline Points: 1843 |
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Hello cravings, thank you very much for the diagram! Should be doable. I have the components for a pair of compact tops lying around. Have to build cabs + buy an inuke 3k dsp. I could either run passive stereo, or active mono, and mayve get a second inuke for stereo biamp later if feasible.
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cravings
Old Croc Joined: 30 January 2007 Location: Ireland Status: Offline Points: 7442 |
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i found wiring the switch quite difficult. it'd be much easier to just run them biamped by disconnecting completely from the passive crossover. but up to you!
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djkeet
Registered User Joined: 26 December 2011 Location: England Status: Offline Points: 462 |
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I'm thinking of doing something like this but I need to make it tamper proof as I don't want to keep opening the cab to get at it I suppose that's down to the type of toggle switch. Craving could you explain what the 20uf cap is doing ie surge, smoothing,freq? Cheers Edited by djkeet - 25 June 2017 at 8:48pm |
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cravings
Old Croc Joined: 30 January 2007 Location: Ireland Status: Offline Points: 7442 |
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it's not my diagram, mine is much worse heh. but the cap is.. look up capacitor in series with compression drivers and there have been a bunch of threads on them. it's a protection for the comp driver.
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djkeet
Registered User Joined: 26 December 2011 Location: England Status: Offline Points: 462 |
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OK that makes sense then if its protection
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bob4
Old Croc Joined: 29 February 2004 Location: Finland/Germany Status: Offline Points: 1843 |
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hey guys, one more question……. The diagram that cravings posted makes clever use of two speakon sockets, enabling biamp and full range mode, both with the option of parallel output to a second cab…. what if I were to simply install three sockets: one with +/-1 going to the passive crossover input for full range operation, and two parallel wired sockets, which would have +/-1 going straight (or with a protection cap in series) to the HF, and +/-2 going to the woofer.
I need the parallel output only for biamp mode. Would having the passive crossover outputs connected to the drivers while bi-amping affect performance in any way?
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cravings
Old Croc Joined: 30 January 2007 Location: Ireland Status: Offline Points: 7442 |
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yes it would. you need to switch the passive filters out.
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bob4
Old Croc Joined: 29 February 2004 Location: Finland/Germany Status: Offline Points: 1843 |
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thanks again cravings…..
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