Moved across town and now my BA 7800 surround sound speakers not

If you are talking about the driver cones in each of the units, then it's odd that they should have gone, unless they have driven too hard or damaged (say by a child poking them). Double unit speakers have a crossover built into that separates the sound into treble and midrange or bass.
If the sound coming out is "treble" the high frequency that shows the bass units are not working.
Make certain all the wiring is good to the speakers and if you can see the bass speaker check it is not damaged.
If you need to, go inside the units and connect a 1.5 battery across each speaker terminal for a second. If it "pops" then it's working.

Ok, so we know the connections are correct, the speakers all work properly.

The only other thing I can think of is: is your PC actually sending signal to the rear speakers? Have you set it to 5.1 surround, and are you playing something in surround sound? The best way of checking (personal preference) is use some kind of racing game, reverse into something and you'll get a broken window effect in the rear speakers.

So, check to see if your PC is sending the rear effects, double check to make sure the actual speakers work (you could plug an MP3 player into the rear speaker input.

If this doesn't help, feel free to reply.

FIRST- double check that the center channel is hooked up in the center channel connection. we have all made this mistake. second if you are watching a movie through a dvd or bluray player be sure that both your audio L/R rca's or hdmi cable's are plugged in. I do not know if your are on cable or satellite? Double check the connections. Be sure that the that if your can select your sound preference turn it to 5.1 surround or matrix. hope this helps

1. You should be able to connect the midi up to the digi 001, if not get an 002, 003. The 001 is so outdated and will not support newer pro-tools software especially plug-ins.I know I had the 001. Now with the 003 rack(love it).and PT 7.4. Research how to plug a midi device into PT.
2.Would google EMU XL compatability.
3.refer to 2.
4. No just memory(RAM)
5.cool...yes why couldn't you?
6.You should be able to come out of the digi, then to a power amp, then the BAs

check whether the wire is connected properly on both the ends

connect ur rca cables from the main left/right sockets of dvd to into audio input in tv

This may be a software issue. If you only had two speakers before, the software will not use the rear speakers.
Go to Control Panel. Click on "Sound and Audio Devices". Under the Volume Tab, at the bottom, you will see a picture roughly representing the type of speakers.
Click on the Advanced button.
Click on the arrow in the pick box, and choose Surround Speakrs or the 5.1 Speakers.
Click Okay. Try the speakers again.

I'm amswering my own question here, but I should have looked a little harder before posting here.

The link below to Gateway support provides the info I was looking for. I remember now that I did not receive a manual as such with my Gateway, but was directed to this info.

http://support.gateway.com/s/SOUND/speakers/7003229/7003229nv.shtml

First you need to make sure that all the speaker wires are connected to the unit securly. next make sure that they are wired into the correct spots. then check and make sure that it is on the correct mode. please write back

After using the method of last resort (RTFM) I discovered that Yamaha 7.1 amps assign an order of priority to the speakers. The surround speakers have higher priority than the surround-back speakers. I had connected the rear speakers (in a 5.1 configuration) to the surround-back speaker terminals and since nothing was connected to the surround terminals the E-6 error happed on auto-setup.

I eventually fixed this by connecting the rear speakers to the Surround L/R terminals and then, via the manual setup menu, set rear surround = NONE. This causes the amp to route the rear-surround signals to the Surround L/R terminals. The auto-configure then completed successfully.