I just looked into this with help from several of these same posters.
As Stanwal noted... this is the Rel subwoofer solution. They provide a special cable to hook the sub to the mains.
they design their sub so that is very high impedance. which I understand to mean that your power amp will not be loaded up with this kind of connection.
However, I don't think most subwoofers are designed this way and I would be very careful to wire it up this way. I would differ with Bdgregory and suggest you contact your sub manufacturer just to be sure. (not an expert on this one)
I do know that the standard way to use high level inputs is to go Amp to Sub to Main speakers and the Sub uses a fixed highpass filter to send the upper frequencies to your mains and then a low pass cut off to select the sub cutoff frequency. As Stanwall suggested I would... I did not like the effect of going through the sub's high pass filter in my system.
As Stanwal noted... this is the Rel subwoofer solution. They provide a special cable to hook the sub to the mains.
they design their sub so that is very high impedance. which I understand to mean that your power amp will not be loaded up with this kind of connection.
However, I don't think most subwoofers are designed this way and I would be very careful to wire it up this way. I would differ with Bdgregory and suggest you contact your sub manufacturer just to be sure. (not an expert on this one)
I do know that the standard way to use high level inputs is to go Amp to Sub to Main speakers and the Sub uses a fixed highpass filter to send the upper frequencies to your mains and then a low pass cut off to select the sub cutoff frequency. As Stanwall suggested I would... I did not like the effect of going through the sub's high pass filter in my system.