quality posts: 56
k9alliance wrote:Question: I have a non-powered sub-woofer that requires a pre-amp in order to connect it to my home theatre 5.1 system. Will this fit the bill? (The connector colors on the sub are grey and white...)
PS- If not, any suggestions?
A Power Amp is what you need to drive a non-powered subwoofer, not a pre-amp.
You already have a pre-amp; it's what lets you select what you're listening to and how loud. (It you have a receiver, it's included.) Hopefully, it has a "sub out" or "LF (low frequency) out" round plug in the back. You take an RCA cable (use a "subwoofer cable" if you want to spend extra) and connect one end to that output on the pre-amp (or receiver) and the other end to the input of the power amp.
The "2-channel multi-zone amplifier" in this Sellout would work fine (if it provides enough power). That amp is "bridgeable," which means you can join together the two stereo channels (left and right) to make one more-powerful channel, if your subwoofer (like almost all) has a single input (two bare-wire connectors, one grey and one white, make for a single input channel, in all likelihood).
How much power is enough? That depends on a lot of things: how efficient is the subwoofer? How large is the room (including ceiling height)? What are the floor and wall materials? Is it open to other rooms? What kind of music do you like to listen to? Will you be using it for movies? What kind of movies? How loud? Do you have downstairs neighbors? Best to discuss it with someone knowledgeable.
OTOH, for a medium-sized room, with a typically-efficient subwoofer, to listen to any music that doesn't have the word "thump" in its name at a more-or-less reasonable volume, the amp in this Sellout should work well. For watching movies, as long as you don't like it too loud, it should be okay (Michael Bay productions excluded).
Please bear in mind that all the above-mentioned factors can affect the suitability of the amplifier in your setting. I would think it's a good place to start, as long as you don't mind the possibility of re-selling it if it turns out you need more power.
P.S. Be sure to follow the instructions for bridging the amplifier; it's easy, but it's different from normal.
P.P.S. If you do need more power, you should go to 3 times as many watts, at least, to make a real difference. And that's 3 times the bridged power (stated in the manual, probably around 100 watts).
Shameful truth: once upon a time, I worked in a stereo store.
I'm supposed to buy something? But we're having so much fun with things as they are, I don't want to ruin it!
Purchases: 18 / 11 (nobody cares what, so I won't tell you);
Brownies of Cannabis: 1 / 12 (Thanks, Wootalyzer! -- would it help if I called them something else?).