Originally Posted by leadliner
i have had the same experience with mine, i guess its ok to use a y connector. the manual says to just plug in left/lfe. what gives..
It is always okay to use a Y and hit both inputs on the sub. However it is usually not required to achieve maximum performance. In most cases using a Y split will double the input voltage as both inputs still receive the same voltage but it is summed before the amplification stage.
The variables here are,
1)The output voltage from the receiver's sub out RCA jack (and how this varies with both master volume and bass level control changes)
2)The input sensitivity of the subwoofer jack(which is controlled by the GAIN control on the sub---remember, the gain control is not a volume control)
3)The input impedance of the subwoofer jack(and how it relates to the impedance of the subwoofer output jack on the receiver).
In about 499 cases out of 500(estimate of course), a single mono cable to either input will provide all the "gain" needed to push our products to their full potential. A few times a year we'll run into one of these cases where something in the gain structure chain just isn't allowing the subwoofer to "see" enough input voltage to reach its performance capabilities.
I would say, as a rule of thumb, if you need to have our gain control set any higher than the "3 o;clock" positioning on the dial....try an inexpensive Y cable.
Power Sound Audio