Woofer with 2 sets of Terminals?

SamClassA · 15th November 2006, 10:35 PM

Hi, my Woofer (Seas CA25RE4X/DC) has 2 sets of terminals?
Aparently it has 2 layer voice coil with seperate terminals.
Do I just connect to one set of terminals?
Any help appreciated.
Sam.

Tuukka · 15th November 2006, 10:53 PM

Functionally, yes, you could connect to only one set. Ideally, both should be used, as this will provide the full efficiency of the woofer. 4ohm load for a parallel connection and 16ohm for a series connection. The T/S provided by seas is for a parallel connection. Using a series connection would change the electrical parameters. Using only one of the coils would change the electrical and mechanical parameters.

http://www.seas.no/seas_line/woofers/H372.PDF

SamClassA · 15th November 2006, 11:41 PM

thanks tuukka,
unfortunately I designed my crossovers asuming the woofer was an 8ohm driver, so I would only connect to one set of terminals? Would that compromise on the characteristics of the driver and not perform to its max capabilities?

15th November 2006, 10:35 PM	#1
SamClassA diyAudio Member Join Date: Jul 2006	Woofer with 2 sets of Terminals? Hi, my Woofer (Seas CA25RE4X/DC) has 2 sets of terminals? Aparently it has 2 layer voice coil with seperate terminals. Do I just connect to one set of terminals? Any help appreciated. Sam.

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15th November 2006, 10:53 PM	#2
Tuukka diyAudio Member Join Date: Oct 2002 Location: Suomi	Functionally, yes, you could connect to only one set. Ideally, both should be used, as this will provide the full efficiency of the woofer. 4ohm load for a parallel connection and 16ohm for a series connection. The T/S provided by seas is for a parallel connection. Using a series connection would change the electrical parameters. Using only one of the coils would change the electrical and mechanical parameters. http://www.seas.no/seas_line/woofers/H372.PDF

15th November 2006, 11:41 PM	#3
SamClassA diyAudio Member Join Date: Jul 2006	thanks tuukka, unfortunately I designed my crossovers asuming the woofer was an 8ohm driver, so I would only connect to one set of terminals? Would that compromise on the characteristics of the driver and not perform to its max capabilities?

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