Originally Posted by tOMZY
I currently have a stereo based system which I sometimes use for watching movies as well. For that reason I would love adding a subwoofer to my setup. The problem is that my integrated stereo amp doesn't have a subwoofer output.
Could I connect the subwoofer directly to BDP-105 an let the OPPO do the bass management? Would it work like that?
Welcome to the forum of audio lovers tOMZY!
Yes, you can and as long as your subwoofer is active, i.e has a built in power amplifier. Disable/Bypass its lowpass filter or set it to the highest frequency possibleif no bypass switch is available.
- Use the MCH outputs of the 105 instead of the Stereo outputs for the setup you are looking for.The LF/RF go to your intergrated stero amp and the SUB output to the subwoofer.
- Choose the crossover frequency between your sub and the mains. For the sub, you can set it in the Oppo setup screen by setting the speakers to "Small" and entering your distance/trim settings. The choice of xover frequency depends on the capabilities of your main speakers and sub itself. Its best to set it at least an octave(twice the frequency) above the rated low-end frequency response of your speakers.
For example, if your speakers are rated to go down to 30Hz, set your xover to at least 60Hz, with 80Hz probably being the ideal. You shouldn't ever go above 120Hz or else you'll start to hear dialog through the subwoofer, which is not desirable.
Lastly, match the output levels of the sub(via its volume/gain control knob) to equal the output levels from your mains using an SPL meter and an audio test/calibration disk. Pink noise works great for these kinds of tests.
Make sure you get a extremely capable sub that you can afford to buy, i.e musical, rated with excellent low frequency response(below 20Hz) and with wide overall bandwidth.
Hope the above is clear and works for you...