Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
Subs are not channel dependent so typically splitters are used to distribute the signal to powered subs. A single small amp to power these units should be fine. You will need to wire the subs (8ohm) in parallel in order to present a 4ohm load to the amp.
point of information : static loads like when you say 4 ohms are really meaningless . once the music is playing a speaker's impedance curve is all over the map .
the range depending on design can be 1 ohm or 2 , right up to 130 ohms or so on the other end .
when they say 4 or 8 ohms they are referring to just measuring the windings resistance wise . that means little once the actual music is the source.
some popular speakers were wicked for an amplifier to handle . speakers like the old dahlqust dq10's or rogers ls3/5a had wild curves. looking at the static measurement you would never have known it .
bass can put terrific demands on an amplifier . putting subs in parallel is not a good idea . you half the impedance making things even worse as you multiply current demands .. the best way is two channels for a pair of subs or else use 1 sub .
if you really want to see the behavior of a speaker you must look up the impedance curve.
for those interested in the technical aspect there is some good info here .
point of information : static loads like when you say 4 ohms are really meaningless . once the music is playing a speaker's impedance curve is all over the map .
the range depending on design can be 1 ohm or 2 , right up to 130 ohms or so on the other end .
when they say 4 or 8 ohms they are referring to just measuring the windings resistance wise . that means little once the actual music is the source.
some popular speakers were wicked for an amplifier to handle . speakers like the old dahlqust dq10's or rogers ls3/5a had wild curves. looking at the static measurement you would never have known it .
bass can put terrific demands on an amplifier . putting subs in parallel is not a good idea . you half the impedance making things even worse as you multiply current demands .. the best way is two channels for a pair of subs or else use 1 sub .
if you really want to see the behavior of a speaker you must look up the impedance curve.
for those interested in the technical aspect there is some good info here .
You're not going to get much bass out of in-wall subs, especially with a system in that price range. A small stand-alone powered sub can be had for $2-300. One sub, properly located, can sound much better than 2 that underperform.
Decent home theater speaker systems typically cost well over $1000. If your budget is very limited, it might make sense to save up for something better that you'll enjoy more than a very low end system.
keep in mind that many low end amplifiers carry the same bogus ratings as speaker ohms are .
they rate the output in to 4 or 8 ohm test resisters and while the power seems fine in to static resistive loads all bets are off with a real speaker impedance curve .
a good amplifier will have ratings at 8 ,4 and 2 ohms and the wattage output should be higher at 2 ohms than 4 ohms ideally but many times it just gets close or a bit less to 4 ohm . a poorly designed amplifier will drop like a rock in power at 2 ohm .
a typical good design would look like this hafler amp
"With both channels driving 8-ohm loads at 1,000 Hz, the outputs clipped at 325 watts per channel, corresponding to an IHF clipping-headroom rating of 1.05 dB. The DH-500 does not have a 4-ohm power rating, but we measured 452 watts per channel into 4 ohms and 392 watts into 2 ohms at the clipping point. "
a good amplifier will not just say 200watt . there is a whole lot more to that spec..
it needs to say rms power at x-distortion and tell you what the power is at 2,4 and 8 ohms in order to mean anything . they should also specify dynamic headroom too
Last edited by mathjak107; 08-16-2017 at 04:07 PM..
What is your goal? Generally speaking a built-in multi-channel home theater system from a no-name company that costs less than what one quality speaker from a well regarded firm offers is NOT going to deliver much satisfaction. You'll have holes in your walls and garbage sticking in them...
Perhaps it makes sense to consider a more affordable and higher quality non-in-wall system -- many folks would suggest that the impact of a high quality subwoofer together with a nice soundbar is the best solution for those with a modest budget -- https://www.amazon.com/Definitive-Te...ZY42DV84YBMEQT
What is your goal? Generally speaking a built-in multi-channel home theater system from a no-name company that costs less than what one quality speaker from a well regarded firm offers is NOT going to deliver much satisfaction. You'll have holes in your walls and garbage sticking in them...
Perhaps it makes sense to consider a more affordable and higher quality non-in-wall system -- many folks would suggest that the impact of a high quality subwoofer together with a nice soundbar is the best solution for those with a modest budget -- https://www.amazon.com/Definitive-Te...ZY42DV84YBMEQT
I'm not trying to open up a movie theater in my living room... Just something that sounds nice, is economical, and looks good. $700 for a single sub woofer is ridiculous unless you have no budget and love throwing away money.
My main goal is to have a clean look. No cables or speaker boxes hanging out.
Please register to post and access all features of our very popular forum. It is free and quick. Over $68,000 in prizes has already been given out to active posters on our forum. Additional giveaways are planned.
Detailed information about all U.S. cities, counties, and zip codes on our site: City-data.com.
Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
