I ran into a problem. I have a monoblock sub amp, and my car has a stock sub in the spare wheel well. I wanted to take the high-level input from that and connect it to my amp, but the amp expects left and right inputs. Not sure how to wire this… do I connect both, or just one? Should I run them in parallel?
The sub channel carries both left and right signals. Just use an RCA splitter.
Zuri said:
The sub channel carries both left and right signals. Just use an RCA splitter.
There aren’t any RCA outputs, just a red and black wire running to the stock sub.
You can connect the mono output from your factory amp to both the left and right high-level inputs. If your aftermarket sub amp is also mono, you can just use one side since the amp sums them anyway.
Cody said:
You can connect the mono output from your factory amp to both the left and right high-level inputs. If your aftermarket sub amp is also mono, you can just use one side since the amp sums them anyway.
Can I wire it in parallel and keep the stock sub while using it for high-level input?
@Skylar
Yeah, high-level inputs have very high resistance. They just tap into the signal so the amp knows what to amplify. It won’t put any strain on your factory amp, so you can keep the stock sub and still use it for high-level input.
@Cody
Thanks! Quick question—are the high-level input connectors on an amp just standard ATX connectors? They look like it, but I’m not sure. My amp didn’t come with the plug, and the manual doesn’t say what it’s called.
@Skylar
If you bought the amp new, it should have come with a harness for high-level input. If it’s used, you might have to track one down. Different amps use different connectors, so there’s no universal plug—it depends on the brand and model.
@Cody
One last thing… should I wire just one channel or connect both to the mono output?
Skylar said:
@Cody
One last thing… should I wire just one channel or connect both to the mono output?
If the amp is mono, it won’t make any difference—it sums the signal anyway.
Cody said:
You can connect the mono output from your factory amp to both the left and right high-level inputs. If your aftermarket sub amp is also mono, you can just use one side since the amp sums them anyway.
It’s a monoblock amp, so I guess that means it’s mono? Not 100% sure, but it only has a single speaker output.
@Skylar
Yeah, if it only has one speaker output, it’s a mono amp. Even though it has left and right inputs, that’s just for summing the signal. If your stock sub is already mono, then the audio is already summed.