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RCA to speaker wire connection

post #1 of 9
1/26/12 at 12:53am
Thread Starter 
So I have an Onkyo HT-R340 amplifier and it doesn't have an RCA plug at the back for the sub, it has a speaker wire connection though see manual. Now I just bought a sub which has a RCA and high impedance speaker wire connection for those subs which doesn't have an RCA. I was planning to use this, however this means that I will need to connect these subs to Speaker B section on my amps. If I do this then it will not be possible to get a full 5.1 because the sub is on speaker B and all the other 5 speakers is on speaker A. Onkyo doesn't allow a 5.1 system to be fully functional when speaker A and B both selected. So what is the workaround for this any suggestions?
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post #2 of 9
1/26/12 at 1:08am
Quote:


I was planning to use this, however this means that I will need to connect these subs to Speaker B section on my amps

No you don't. The Onkyo R340 has a dedicated subwoofer output that uses speaker level output. You dont need to use Front B output at all.

the subwoofer output on the Onkyo only has one speaker terminal, not a left/right. Just connect it to the left speaker level input on your subwoofer.

How many subwoofers do you have, one or two? Your wording confused me a little.
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post #3 of 9
1/26/12 at 1:08am
There are special cable adapters available, which, when hooked up in parallel to stereo speakers, derive a mono sum signal with a resistor network build into the adapter. On the other side of the cable a RCA connector allows it to be plugged in directly in the Line input of the sub.
That cable adapter provides the same functionallity as the high power (speaker) inputs on your sub. Those have to be connected in parallel with the existing speaker pair (stereo). The sub then generates the same mono sum signal to its own built in power amp. Just switch the sub to high level inputs in this case.
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post #4 of 9
1/26/12 at 3:37am
The RCA out on the receiver is not powered, it is designed to be used with a powered sub...so you would need an external sub-woofer amp to power your sub, so cables alone will not do the trick,,if you get an amp it will have RCA in and speaker wire out...
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post #5 of 9
1/26/12 at 9:39am
Thread Starter 
Quote:
Originally Posted by afrogt View Post

No you don't. The Onkyo R340 has a dedicated subwoofer output that uses speaker level output. You dont need to use Front B output at all.

the subwoofer output on the Onkyo only has one speaker terminal, not a left/right. Just connect it to the left speaker level input on your subwoofer.

How many subwoofers do you have, one or two? Your wording confused me a little.

Well yea I only have one sub, it does have a dedicated R340 speaker level output, but it's speaker wire not RCA. The sub has 4 wire (a + and - for each the right left speaker). Now how do I connect this 4 wire output intoa 2 wire input in the receiver. That is my confusion
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post #6 of 9
1/26/12 at 9:54am
Quote:
Originally Posted by TheRekz View Post

Well yea I only have one sub, it does have a dedicated R340 speaker level output, but it's speaker wire not RCA. The sub has 4 wire (a + and - for each the right left speaker). Now how do I connect this 4 wire output intoa 2 wire input in the receiver. That is my confusion

Your sub is mono, so use the left speaker input and you'll be fine. I understand your confusion - you see the left and right and think they should both be used. Not in this case. + out of the receiver into red on sub (left), - out on receiver into black on sub (left). Make sure you have no loose strands and you're good to go.
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post #7 of 9
1/26/12 at 8:28pm
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Originally Posted by Raven312 View Post

Your sub is mono, so use the left speaker input and you'll be fine. I understand your confusion - you see the left and right and think they should both be used. Not in this case. + out of the receiver into red on sub (left), - out on receiver into black on sub (left). Make sure you have no loose strands and you're good to go.

how do you know that my sub is mono? is the sub for the energy act 6 mono?
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post #8 of 9
1/26/12 at 8:47pm
I used that term referring to the fact that you are running one subwoofer (and one is all you need), whose signal will be integrated to handle the lowest frequencies for the whole system, so yes, mono. The important thing to know is that if you wire the sub as instructed, you will get the result you are seeking.

If you were running another sub with either a separate source or channel within the system, you would be running in stereo, if that makes sense.
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post #9 of 9
1/26/12 at 11:25pm
Thread Starter 
Quote:
Originally Posted by Raven312 View Post

I used that term referring to the fact that you are running one subwoofer (and one is all you need), whose signal will be integrated to handle the lowest frequencies for the whole system, so yes, mono. The important thing to know is that if you wire the sub as instructed, you will get the result you are seeking.

If you were running another sub with either a separate source or channel within the system, you would be running in stereo, if that makes sense.

Yea that made sense, just confused that there is a right and left in the subwoofer, making it look like stereo
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