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removable sub parrallel to mono?

Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=122424
Printed Date: May 15, 2025 at 10:05 AM


Topic: removable sub parrallel to mono?

Posted By: hoglunds
Subject: removable sub parrallel to mono?
Date Posted: June 24, 2010 at 9:51 PM

Hi,
I am working on a boat that has a woofer that will be permanently installed into the cabins enclosure, and also will have a custom enclosure that will be built into a removable bench seat in the boats back open area. I would like to be able to switch from series to parallel so when the bench woofer is removed, the one inside will be at 2 ohm and when they are together it will be at 4 ohm. I have 2 dual 4 ohm voice coil subs. I am not sure what would be the best way to go about it.

Would this work?
Amp + output to woofer 1+ (sub wired parallel)   
woofer 1 - to 30
87a to Amp-
87 to woofer 2+ (also wired parallel)
woofer 2- to relay#2 87
relay#2 30 to amp-
both relays 86 to fused 12v
both relays 85 to switched ground

Thanks for any help
    



Replies:

Posted By: i am an idiot
Date Posted: June 24, 2010 at 10:56 PM

Radio Shack sells a plug similar to the following, but it is larger than this one and will handle more current.  You will have to buy 2 of one plug and 1 of the mate, Wire the mate into the system, then wire one of the 2 to the woofer that is to be removed, then wire the other one with a jumper wire that shorts the 2 pins when the aux woofer is removed.  Attach the jumper to the system wire so you will not have to look for it when you remove the woofer.

https://www.radioshack.com/product/index.jsp?productid=2103448


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