Okay, I'm a newbie when it comes to speakers and that kinda stuff. As
of a few days ago I had a fully working Logitech X-540 speaker system
for my computer. Not the loudest in the dorm, but able to contend
with
them. Then my subwoofer went out. Logitech, being the great company
that they are offered me a full replacement if I sent them the wired
control module (set won't work without it).

So.
I have a fully fuctioning new set in the mail, destined to arive
sometime soon, and the old set with 5 fully functioning speakers (5
of
6, minus sub). I'm going to buy spliters so I can hook both sets up
(10 satellites, 1 sub). The problem is power consumption. I know from
my digital electronics class that a system pulling nearly double it's
recommened power isn't good.

The subwoofer doubles as the amp/hub of the system so I don't think
it's replacable. Is there a way I can suplement it with another 120
watt amp? Or should I buy an amp that can handle both systems and a
new sub (because the sub doesn't have an output)?

news:1bb5a7a8-6602-46c6-8b36-e440bae82bf1@k2g2000hse.googlegroups.com...

If, by splitters, you mean attaching two speaker to each amplifier output,
you might run into problems. You'll pull twice the current from the amp, and
the amplifier might not like that (ie, it will pop fuses or even blow the
output stages). It's not a good idea.

If I read you correctly, you want another amplifier that can, at least,
drive the five "windfall" speakers.

Here's what I'd do...

When the replacement unit arrives, set up the system, make sure it works
correctly, and give yourself a few days to kick back and think about what
you want to do.

Adding a second 5.1 amp is no big deal; you'd simply split the sound card
outputs with Y cables to feed the Logitech system and the new amp.
Furthermore, you should be able to open the "dead" woofer to access the
driver directly.

There are other possibilities, such as using a second amp to drive all 10
mid/tweeter speakers. Each channel of the amp must be able to drive two
speakers at the same time. For example, if the speakers are 8-ohm, the amp
must be able to handle 4-ohm loads.

By the way, when I attended Caltech many years ago, we were awakened on exam
mornings with Wagner.

A lot of this is Greek to me.
Let me clarify.
On Feb 6, 8:29 am, "William Sommerwerck" <grizzledgee...@comcast.net>
wrote:

Yes, that is what I planned on doing and I figured that would be what
would happen if I did it.

Yes

So I would have two speaker systems basically going to one sound card?

What is the 'driver'? I've already taken it apart and thrown some of
it away (mainly the box and the speaker). What I have left is what I
would call the 'motherboard' it has the I/O and a bunch of capacitors,
but I don't think it would work considering I had to cut the power
cord, and the controls have been cut off to be shipped back to
Logitech to prove I had a X-540

I think the speakers are 8 ohm's, were would I hook up an ohmmeter to
tell? The specs on Logitech does not say. Logitech says this:
Total RMS power: 70 watts RMS
Satellites: 45 watts RMS (2 x 7.4W front, 15.4W centre, 2 x 7.4W
rear)
Subwoofer: 25 watts RMS
Total peak power: 140 watts
Frequency response: 40 Hz - 20 kHz

From: http://www.logitech.com/index.cfm/speakers_audio/home_pc_speakers/dev...

If they were 8ohm speakers, whouldn't the amp need to support 16 ohms?

If I go this route, can any system hook into a computer sound card? I
have both digital and analog outputs on my sound card.

Wagner? How plays clasical music at that high of a volumn?

Thank you for your time, I apprecate any help I can get

If I were to buy a reciever like this (off of ebay):
http://www.retrevo.com/search/v2/jsp/downloadPage.jsp?doc=dbee8e022f8...

Would it work. I'm going to buy more wattage than I need so I can
upgrade later if desired.
What would the requirements for the longitech speakers be?

Is there a guide that can help me? Cause I have a million questions :P

news:47a3e3f8-1a25-490c-8af0-e4e11d5b5805@d21g2000prf.googlegroups.com...

And that's the problem with having to help someone at a distance.

I would simply suggest setting up the replacement system and enjoying it.

Even if you connect the windfall speakers to another amp, the system is only
going to play slightly louder -- 3dB -- which isn't worth the investiment in
another amplifier.

Ask Logitech whether you can safely parallel the windfall speakers with the
new ones. They'll probably say "no".

Why only 3dB?

On Feb 6, 4:29 pm, "William Sommerwerck" <grizzledgee...@comcast.net>
wrote:

news:62074b14-08f4-482d-a0cc-396024231d92@f10g2000hsf.googlegroups.com...

<<Why only 3dB?>>

Two identical signals (correlated) will add to be 6dB louder. But these
signals aren't identical:

The speakers will be in physically different positions, so the arrival times
will be different.

The speakers will excite the room differently because they're in different
places.

The speakers will, unless extremely high-precision devices (which they
aren't) differ from unit to unit.

Two completely uncorrelated signals will add to be 3 dB louder. These won't
be *completely* uncorrelated, though; my guess is they'll add to be maybe
4dB louder, depending on the room. And your imaging will be significantly
worse because of the multiple starting points for each signal.

I'd go with this suggestion:

To which I'd add: keep the windfalls for spares the next time something
blows up.

Or get another amp and set them up in another room.

Peace,
Paul