tc-7 question

[mr_imperial 10+ year member]

Is it a dual 3 ohm or dual 4 ohm? I was at the site and one part says 3 and the other says 4. Just wondering which one it is:fro:

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[pzaully 10+ year member]

Your amplifier will see dual 4ohm nominal. How you wire it is up to you.

Pzaully

 

[mr_imperial 10+ year member]

o ok that helps alot so it should be the same as any other dual 4 ohm and i can wire it to 2 or 8 ohm right

 

[pzaully 10+ year member]

o ok that helps alot so it should be the same as any other dual 4 ohm and i can wire it to 2 or 8 ohm right

First question no, second question yes. Some subwoofer manufacturers do not list their dc impedance and some do not list their nominal impedance. TC does both so thats why you might be coming up with 2 numbers. For your application, base it off the nominal impedance and yes it would be either 2 or 8ohm (or 4ohm if you only use one vc for some hopefully extravagant instance) being presented to the amplifier.

Pzaully

 

[mr_imperial 10+ year member]

o ok. thanks for all the help

 

[Wkbdkid 10+ year member]

Take a DMM to the coils an see what they say, then youll find out exactly what is, rather than guessing. My tc7 is a D4

 

[mr_imperial 10+ year member]

ok. mine should be also because thats what is says above "add to cart" but i was just making sure because later on down the page it had dual 3 ohm

 

[pzaully 10+ year member]

Because a voice coils impedance changes with frequencies its hard to say what exactly it will be presenting on a given frequency. Rolling some dmm checks during each tone check is going to be pretty tiresome and I honestly suggest just adding a percentage to whatever the manufacturers specs. Though yes, you could sit there and find out what is the exact impedance a sub plays at at each frequency. Getting this exact is just crazy and nothing id ever attempt, shoot for it if you want.

Pzaully