Where can I find a schematic for my Motorola HS-544 amp ?

You should NOT drive the amplifier into the clipping mode continuously. There is a possibility that you have fried your speakers or that they are the real problem. You haven't told us what you were driving, however this amp will deliver 450 Watts per side RMS at 8 ohms which means your speakers have to be rated at least that much RMS power for continuous. When speaker voice coils fry, they can wipe out amplifiers. Let us know what speakers you are using and how they are configured. This amp is going to be expensive to repair I can tell by looking at the schematic: Here is the schematic:

http://elektrotanya.com/qsc_plx2502.pdf/download.html

Scroll down to "get manual" and click to download it. IGNORE other download links.

This amp has circuits to boost the power supplies to the amps to handle the peaks. It is rather complex but the schematics are complete and have good explanations... some of the best I have seen. There are going to be a lot of destroyed components and great care has to be used after repair to "cold start" the unit to make sure nothing else is bad or it will blow up again. Most people do NOT have trouble with the QSC amps... so do tell me what speakers you are using and how they are configured so we can verify the design is correct. This amp is rated for 8 ohms so USUALLY only ONE speaker can be connected per side... and finding an 8 ohm speaker that can take 450 watts continuous RMS isn't easy. People fall for the advertising claiming "Peak" and "Program" power which are FAKE advertising... ONLY use continuous RMS power when sizing amps and speakers. There are MANY ways to cook out equipment... One is to boost the bass or the treble way up. Another is to NOT use balanced interconnect lines between mixers and your amps. Yet another is to NOT power ALL interconnected equipment from a single receptacle or power conditioning module. Please describe your setup further so I can help you more!

Here is the schematic AND everything you need to know about the speakers:

http://elektrotanya.com/gallien-krueger_800rb_sm.pdf/download.html

Scroll down to "Get Manual" on the site and click on it to download. It appears that the MINIMUM impedance on the trebel upper set is 8 ohms and MINIMU on the woofer is 4 ohms at the jack in each case.

Well i tried looking up that amp, but Fosgate sight is down. So assuming that the best power out of your amp is 2ohms off the bridged hookup, and the subs are 4 ohms per coil, the best way is to only use one side of each speaker and hook it straight the the bridge. Only using one hook up wont hurt anything, its just for giving you wiring options. And when adding up ohms of speakers, it goes like this. If you had two 4 ohm subs, that'll give you a 2 ohm load. If you hooked up all your hookups, it would be like having four 4 ohm subs, and would give you a 1 ohm load.

i personally like the audiobahn a.k.a. cheater amps ill go with the A2300hcx model

If you're looking for new tweeters, I'd start at e-bay, see if there's any that are matched with yours.

If not, look for (I presume) compression drivers, with the correct sensitivity (sound output at 1 watt) to your woofers. You may need to purchase an adaptor to make the new ones fit the horn.

Also, try to match impedance - if the old ones were 8 ohm, look for new ones that are 8 ohm. Use something different, and the crossover point won't be what's intended. It will either come in an octave too low (the tweeter would die) or too high (big hole in the frequency response).

http://www.audiosavings.com/content/ebay/SubWiring.html

this link will help u understand the wiring & how too wire your speakers...
as far as speaker ohms & amps go, 4 ohm speakers should be wired too 2) two ch. amps.
hope i was of sum help.

http://www.colomar.com/Shavano/dvc_spkr_wiring.html

Use the above site for several wiring schematics on dual voice coil speaker hookups. It will show how to wire for different impedance.
Also, I think the CVR 12's come in 2 ohm and 4 ohm impedance. See if you can check yours to determine which you have....

Hi there. If 10" speakers are 8 or 16 ohm, parallel them. If they are 4 ohm, series them. if "External speaker" output is rated down to 4 ohm. If no external speaker jack, you'll have to tap into existing speaker jack with a "Y". Check the minimum ohm load for the amp.
Thanks
Paul

Go to www.peavey.com/asstes/literature/specs/005584220_3.pdf. Apparently the 410 TVX can be used in 4ohm or ohm configurations just don't drop below 4 ohms and make sure your amp has the minimum required impedence. Hope this helps.

You can use any wattage speakers as long as they are not less than the watts from your amp. However you can still use lower wattage speakers as long as you don't turn up the volume full or two loud! Otherwise your damage the speaker.
HOWEVER you must get the ohms matched up right. You must never connect any speaker with a low Ohm to a high rated amp. Or you will blow the output stage transistors or IC.
Most Amps are 8 ohms, so you could connect an 8 or 16 etc, but not a 4 ohm.