Amp for passive subwoofer connection issue

Tulipomania

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Jul 2, 2017
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Hi all,

Any help would be incredible.

I am trying to connect my Denon AVR1911 to my LG S63T1 1000W speaker system. Reasoning for the receiver is that the speakers came without the home cinema player.

The subwoofer has a peculiar bespoke plug - like so:

https://goo.gl/images/vYDsd3

Of course Lg does not make converters and nothing is compatible. So most likely course of action is to cut it off and use the universal speaker wires. The LG receiver had a built in power amp meaning the subwoofer is passive.

Now I need to connect my passive subwoofer to a single plug "pre out" in my Denon receiver. I understand I need to get a power amp to do this. My questions are:

1) will something like this: http:// for a picture here: https://goo.gl/images/XuMDcU

Is this Sufficient? If not what are some alternatives (that do not include buying a new active sub and are <$50)

2) how would I wire this (incl cable names/types, plugs, etc

I'm an audio rookie so really struggling to find the right answers, but hoping someone in the community here can support!

Many thanks,

Roel
 
The ones you link to are 12v car stereo amps and would require an additional 12v dc power supply to be used at home. You don't really need a stereo amp and would only be using one half of it but it would work.
The original HTS says it had 167watts for the sub. Since that figure is as fake as the ratings on the amps there is no way to be sure how much you really need or how much the amp actually has. If you have too much power you will blow the woofer so being getting less lower is less likely to be a problem than too much.
The RCA subwoofer out of the receiver connects to one of a pair of line level inputs on the amp. The speaker wire would connect to the same channel speaker terminals as the input (right or left doesn't matter).
You will need to set up the receiver so it knows you are using a sub. This will steer bass from all the channels to the subwoofer. Use the speaker set up menu or if the receiver has a mic and auto setup you can redo that.
 
The ones you link to are 12v car stereo amps and would require an additional 12v dc power supply to be used at home. You don't really need a stereo amp and would only be using one half of it but it would work.
The original HTS says it had 167watts for the sub. Since that figure is as fake as the ratings on the amps there is no way to be sure how much you really need or how much the amp actually has. If you have too much power you will blow the woofer so being getting less lower is less likely to be a problem than too much.
The RCA subwoofer out of the receiver connects to one of a pair of line level inputs on the amp. The speaker wire would connect to the same channel speaker terminals as the input (right or left doesn't matter).
You will need to set up the receiver so it knows you are using a sub. This will steer bass from all the channels to the subwoofer. Use the speaker set up menu or if the receiver has a mic and auto setup you can redo that.
 
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