I have a pair of M3Tiis, powered by a Musical Fidelity AC3 amp (85 watts at 8 ohms, 170 at 4 ohms, 340 at 2 ohms) in a room measuring roughly 18 ft by 18 ft. The room is not ideal for sound (it has a wall of french doors and quite a bit of gym equipment in it). The M3s sound lovely at low to medium volume levels, but to my ears they seem to congest a bit in the low end when handling tough material at higher volume levels. (At the price, I am definately not knocking them.) Would you recommend adding one (or two) subwoofers and if so which ones? How would I wire them to the M3Tiis? There is no separate subwoofer line out on the amplifier. I am interested only in music (no home theater) and in purity of sound. I listen to a wide variety of music and absolutely detest sloppy base. Space is a consideration. Thanks.

For your room and considering you are looking at music only application, I would recommend the EP125. This will add the deeper bass you are looking for and clean up your low frequency performance at high volume. The EP125 will accept high level input from your receiver so it is no problem to hook it up without a line level sub out from the receiver.

Ian Colquhoun
President & Chief Engineer

Thank you for your advice. Do you think two subs are called for? I understand that the ears cannot pinpoint the direction of sound at low enough frequency levels, but I don't know whether the high end of the subwoofer's range is high enough that using only one subwoofer would ruin the stereo separation. Your thoughts?

Your best options would be either the EP175 or the EP125. The EP175 would be the best all round match in your room but the EP125 would work just fine if you to keep the size to a minimum. Both of these sub-woofers have high level in and out so you can hook them up to the speaker outputs from your amplifier.

Ian Colquhoun
President & Chief Engineer