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If you are using the amp in stereo mode, then you will require a separate amp for the monitors and the input of that amp are taken using BALANCED TRS cables from the monitor jacks. If you are using the amp as MONO and monitor, then connect NO MORE than two 8 ohm speakers to the Speakon plug on the back labeled for use as monitor. Refer to your user manual... they have detailed photos of the connections. If you lost your manual, you can download another from the Behringer site. There are settings you need to do to configure the unit after connecting your speakers. The small slide switch has to be set to the center position for Main/Mon. Make sure it is centered as many people have had it slightlyu off and the system will NOT pass audio. You need to set each channel "monitor 1" level control to send the monitor signal to the MONITOR mixing bus. You will then use the MONITOR 1 slider to control the amount sent to the monitor. Be VERY careful of grounding the sleeve of 1/4 inch jacks that originate at the Speakon power amp outputs as the SLEEVE of channel A is the HOT side and you can blow the power amp for the channel... it is EXPENSIVE to repair.
The speaker connections are on the BACK and are "Speakon" connectors... These are special plugs and these apparently can also accept 1/4 inch plugs. It appears that the MINIMUM impedance should be no less than 4 ohms, NOT 2 ohms. One of the back connectors is for the mains, the other ois for the monitor soeakers. The FRONT connections are line level which doi NOT drive speakers,
You best rewire the cabinet to put the two speakers in series. Wire one speaker plus to minus of the other and bring the other lead, one from each speaker to your jack on the cabinet. The amp output impedance is what is set on the switch... for two 8 ohm speakers you would use both jacks to the two speakers BUT ssince you have 4 ohm speakers the ONLY option is for two in series and set the switch to 8 ohms. The amp is ONLY 30 Watts so don't expect too much sound output... You should get a nice CLEAN sound at a reasonable level. If you drive the amp too hard it will clip and you will get garbage.
First off it's outputs to your speakers. If you had an extra set of powered or amplified speakers you could "Y" cable your speaker outputs. Your passive speakers won't work without an amp. You really need powered speakers or an amp for your extra speakers. (if you had powered/amp'd speakers you could run them off one of you "aux" out for monitors. Do not daisy chain your speakers connecting twi together, you'll change the resistance/ohms and damage your speakers. Trust me, I do this for a living.
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!
You have to make a choice... you can tie two main speakers to the "B" channel and the two monitor speakers to the "A" channel.
The speaker configuration slide switch is set to MON1/MONO. The main slider controls the volume of the mains and the MON1 slider controls the level of the monitors in conjuction with the rotary MON1 knobs for each channel.
Each output should not be loaded heavier than 4 ohms. This would be a max of two 8 ohm speakers for each output.
You haven't mentioned what model and manufacturer the mixer is. I will have to guess and say that the monitor out on the board isn't providing signal to the powered monitor or the monitor out on your board is powered and is now damaged by plugging a powered monitor into it. Carefully reread your manual and determine if the monitor out on your mixer is powered or line level. Reread also and make sure that the signal you are monitoring is assigned to monitor out, levelled correctly etc. If you find that the monitor out is passive (line level) try hooking it up to an external power amp and speaker. A guitar amp will do for testing purposes. Start with a low input volume on the amp. Also make sure that if it is passive to use a shielded cable from monitor out to input. If your board has powered monitor outs you can use a speaker cable from monitor out to speaker input (non powered monitor speaker).
Assuming they are ALL mains and not for monitors connect this way:
Connect the passive to the A and B powered outputs. Please read my tip on Fixya regarding hazard of grounding speaker leads on channel A of PMP mixers.
Connect each pair of active speakers to the Main L and R 1/4 inch jacks using TRS balanced cables. Power these speakers from the SAME receptacle or source, even if it means running an extension cord to your mixer from where the actives are plugged in. FAILURE to do this creates a hazard of ground loops and ground bounce that can damage equipment. The Main L and R 1/4 inch jackls can drive more than one active speaker... these are line level signals. Make sure to use TRS balanced cables for this.
Peavey XR 8600?? Well it's 600w per ch. at 4 ohms/per side. So, whichever mode you use (Main, or Main/Monitor) you are best to have a 4 ohm total load for each channel of amplification. Ex.--Mains only, one 4ohm speaker per channel will give you 600W per side. Or two 8ohm speakers per channel in parallel, which makes a 4 ohm total load.
Main/Monitor mode---treat it the same way. one 4ohm, or two 8 ohms parallel. per channel.
Your best situation is to have a 4 ohm total load for each channel of amplification to get your 600W.
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