Two subwoofers for two channel music listening
You want your subs to be the deepest, tightest and driest they can be, the last thing you want is an amp driving another amp, that’s just wrong and gives one note bass, that’s why line level drive the best for them. The last thing you would want is to drive them from say a tube amps etc speaker output. Probably the only amp driven output that could compete with line level, would come from an amp like a Krells or similar, that have absolutely no ? on bass performance. Cheers George |
You take them from your pre/source, you can stick these on the pre’s output or the Belle’s input to get a line level to each of the subs. https://www.ebay.com.au/itm/1pcs-1-RCA-Male-Plug-To-Dual-2-RCA-Female-Jack-T-Adapter-Connector-Gold-... https://www.ebay.com.au/itm/Gold-1-RCA-Male-Plug-To-Dual-2-RCA-Female-Jack-Right-Angle-F-Adapter-Con... Cheers George |
You will get a cleaner signal (bass) from the line level, as an amps speaker output, is far dirtier. Also this is what happens inside a sub, follow the speaker level input and it goes through a "dropping opamp" IC11A and then goes to the "line level rca input opamp" IC11B then to the rest of the subs amps, so by using line level you also use one less opamp as well. https://ibb.co/3cmCWC8 Cheers George |
The very best way is, Method Three!! below. (proper stereo subs) I’ve tried them all. I use two actives in my second system (<40hz), each sub one sits behind each main speaker, and driven from left or right line outs. The left sub is run from left line out. And same goes for the the right sub with the right line out. Just experiment with the 180’ phase switch if you have them on the subs, as one way will be louder at the xover point you’ve used (where your mains roll off) and louder is the right phase, the other way will null out (dip) at the xover point. Then set your levels, so you can "just detect" them working on the lowest notes (if your mains are large ones like mine) Cheers George |
