Are peavey pv 2600power amps loud when liked to 2 1000 watt speakers at 4 ohm ?

The two input jacks are parallel connected, to allow you to chain extra speakers together. There is no facility on this model to bypass the crossover and bi-amplify horn and driver separately. Nor should you need to. Just make sure you use a power amp rated for at least 400 watts per channel at 8 ohms.

Peavey uses a protection network and sometimes it gets blown when too much power is sent to the speaker. The speaker may be blown however. Peak power for this is 800 Watts and 400 Program... That is NOT RMS power. Make sure your amp is no bigger than 300 Watts RMS driving this. If you are REAL lucky, maybe a lead has fallen off the speaker... Open the unit inspect and test the components.

First of all confirm if the speaker impedance is not lower then the recommended Ohms at the back of the Mixer speaker socket.You can use an 8 Ohms speaker on a 4 Ohms amplifier but not vise versa .
Next see if the fan on the mixer works. If not the Amp is getting very hot and this will lead to unwanted distortion. You can confirm if its a heat related issue by playing the mixer at low volumes for more than an hour and see if it distorts.

This makes no sense... 32 Watts and 12.8 volts... something to do with this speaker that is rated at 500 Watts???

If you are trying to calculate something for a car amp you don't understand how they work... that is the only thing I can think given the 12.8 volt thing you stated. Most high power car amps BOOST the incoming battery voltage up with a switching power supply. For instance, they might boost to 48 volts and that applied to a 4 ohm speaker would be 12 amps PEAK maximums. BUT the RMS power is one half that or about 288 Watts in round figures before considering losses.

Many car amps are designed to run with 2 ohm speakers... JUST SO THEY CAN CLAIM massive power values in their ads so you will buy them!

Passive speakers with 1/4 inch jacks do not define either as input as they are wired in parallel...

Assuming the speakers you added were each no less than 8 ohms this should NOT have overloaded your amp.If you have no sound you have probably blown your amp some way.

Note some amps can be blown if they are on and EITHER side of the speaker cable touches a ground. If the amp is running and a 1/4 inch plug is pulled, it shorts and can blow the amp.

150 watts should be easily handled by four Peavey speakers in the connection you described.. If the Peavey's are 8 ohms, then your total load was 8 ohms for the series/parallel arrangement which is well within the 2 ohm drive capability of the Crate according to specs.

I question if you really mean the speakers were in series? This requires a special cable to do this. Now if you mean they were "daisy chained" like the amp went to one speaker and another cable connected that speaker to another, then you REALLY had ALL speakers in parallel electrically which would be at the 2 ohm low limit of the amp... In either case, with only 1/4 of the 150 Watts to each, the speakers should NOT have been damaged. The amp MAY have been damaged. Try each speaker individually at a REASONABLE level to test.

If you plug into the effects loop out jack,OFTEN the connection to the internal power amp is broken so you might have to arrange a special cable as a wye to go back into the power amp as well as your external amp. In any case pwere ALL interconnected amps, etc from the same power source/receptacle for system safety.

usually combo amps are 8 ohm for guitar. a 16 ohm speaker load comes into play usually on half stack set ups. danville tec 10d, i would guess a ten inch speaker, which is also very common for guitar amps.

You CANNOT link the outputs of the amps. They need to drive seperate speakers.

You can tie the inputs together so they will send the same sound to their seperate speakers.

Max power for the Peavey 900 is 900 Watts RMS into a 4 ohm speaker in Bridge mode... That is enough to blow many speakers.

that depends on your speakers, not the mixer. the amp should be matched to the speakers, in watts and in ohmage. for example, 400 watt, 8 ohm speakers should get an amp that runs at 350-500 watts at 8 ohms.

Judging from the "10D", that most likely means 10 watts. 6.5 inch speaker, probably 8 ohms. Most amps of this nature have 8-Ohm speakers.

Their 12-watt and 15 watt amp have a 6.5". Their 20 watt amp has an 8". The 80 watt has a 12".

Hope this helps.