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Active/Passive xover switch

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Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Cyklist Quote  Post ReplyReply Direct Link To This Post Topic: Active/Passive xover switch
    Posted: 13 June 2019 at 12:43pm
I have recently put together a pair of PM90 speakers and now finishing off fixtures on cabs

I am going to fit the C8/8 passive crossover for when I need the extra amp channels 

Any suggestions on a switch that can handle switching active/passive?, ie - switching two bms driver inputs from xover to extra pins on an NL8

tia
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Old Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote studio45 Quote  Post ReplyReply Direct Link To This Post Posted: 13 June 2019 at 2:26pm
You need a 6PDT switch. 
Wire driver and passive crossover inputs to middle terminals so:

1. xover input +
2. xover input -
3. 2" +
4. 2" -
5. 1" +
6. 1" -

Wire "passive" side of terminals so: (assuming you are using 3+/3- on NL8 as your amp input)

1. NL8 3+
2. NL8 3-
3. xover lo out +
4. xover lo out -
5. xover hi out +
6. xover hi out -

Wire "active" side of terminals so: (assuming you are using 3+/3- and 4+/4- on NL8 as feed for 2" and 1" driver respectively)

1. no connection
2. no connection
3. NL8 3+
4. NL8 3-
5. NL8 4+
6. NL8 4-

This way you only have the passive in circuit when needed and isolated if not.

Here is a suitable switch: 




Studio45 - Repairs & Building Commotion Soundsystem -Mobile PA
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Young Croc
Young Croc


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Cyklist Quote  Post ReplyReply Direct Link To This Post Posted: 13 June 2019 at 2:35pm
magic thanks, was looking at dpdt but did not remember type for extra poles

cheers for the breakdown on nl8 configuration Beer
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Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote APW Quote  Post ReplyReply Direct Link To This Post Posted: 13 June 2019 at 3:53pm
Farnell Part no. 2854838
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Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Cyklist Quote  Post ReplyReply Direct Link To This Post Posted: 14 June 2019 at 9:26am
yes bought it in farnell as digikey shipping is mad money
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