Axiom Home Page Forums General Discussion Home Theater How would I build an axiom home theatre for 1kish?

Can someone explain the Bi-Amping thing

My Receiver will let me use the B Speakers as fronts along with A. (right now I'm just using A, single Amp).

If I wire the A terminals to the bottom posts and the B terminals to the top posts, how will this *not* improve my situation? Wouldn't dedicating a 90W Amp to the woofers and a seperate 90W Amp to the tweeters effectively deliver more power? I mean, yeah, you're still getting 90W but its not split between drivers.

I would *think* (and I'm not audio engineer) that by taking drivers out of the equation for a given amp, effectively lowering the resistance. After all, a single 90W Amp now only had to drive 2 Midranges, not 2 Mids and a Tweet... now if the Amp is providing 90W and (as pointed out earlier) the speaker is now providing less resistance...

or do I need to go back to High School Physics?


snazzed

The way I am reading this makes me think you are looking for a low level line out which most AVR's have at least for subwoofers. If you want the rest of the channels as line level outs you have to move up the line to more expensive models.

Snazzed. Though you may have multiple discreet amps in your receiver, you still only have one power supply delivering power to all those amps and it is the limiting factor.

I don't know if this holds true for companies like Anthem that give their power ratings as all channels driven instead of 2 channels driven.

Just means their PS's are that much stronger.

Thats what I figured, but had never thought through the implications.

If Anthem specs out an amp at 90W x 5 does that mean that each amp channel is limited to 90W or that they very conservatively rate each channel?

Jon, the M22s are about average in sensitivity and use about 1 watt for a comfortably loud level(around 85dB)at a typical listening position. Of course, brief peaks in the source material will require much more power, but not likely anything that receivers such as the 589 couldn't supply.

Yes, you wouldn't want to drive them to the full rated power capacity. That refers to what the speakers, not you, can handle without permanent damage. Precautions to avoid permanent hearing loss should always be taken.

Byron, High School Physics can't handle this unless your school included audio amplifier technology in the curriculum. An HT receiver doesn't have separate amplifiers; there's one amplifier directing its output through several channels of output transistors. The output transistors act as valves to take the required amount of voltage from the one central power supply section to increase the incoming voltage at any instant, typically 25-30 times. The power supply section sets the limit on the maximum voltage that can be supplied to all the channels combined at any instant. Simply directing the same amount of maximum voltage available to a speaker through two sets of "valves"(one previously unconnected to a speaker)rather than one doesn't double the power available(as some imagine)and can't increase it by any amount. The output transistors in the several channels have no power of their own.

Ah, if it helps my sats are connected to my woofer only by banana plug, they are not self powered but rather my subwoofer works as an amp for my speakers, makes sense?

That's why I was thinking they could be plugged into an avr.

No, the amplifier in the subwoofer never powers speakers, it only powers the driver in the subwoofer. Apparently you feed the signal into your sub and one branch takes it into the sub amp to drive the sub, while another branch goes straight through into the speaker. Unless the speaker is connected to some other amplifier it's indeed self-powered. Note that the info you linked states that the satellites are "60-watt powered".

Okay so here is what my cart looks like. Just shy of 1600 dollars.

vp150 center channel
qs4 surrounds
m22 pair
ep125 woofer.

It is really close to the midi grand master 2k priced set. I only wonder if it's not "balanced" the way it is now. IMO it looks incredible but want to get one or two opinions before I punch the OK button on this order.

Also if you call axiom can you maybe sometimes get an extra 5% price cut if your buying something better than you had planned? I would gladly pay 1900 for the grand master set. :P It'd alleviate some worry about it not all being balanced out.

I'll try to call them up before work on monday unless they have sunday hours. :P Which I hope they do, can't wait to hear the audio.