What is the simplest way to connect speaker to radio?

There could be several potential causes for the issue you described with your Kustom Quad 100 Dfx amplifier. Here are a few possibilities to consider:

1. Power issue: Check the power source and connections. Ensure that the amplifier is receiving stable power without any fluctuations or interruptions. Faulty power cables, loose connections, or inadequate power supply could cause the intermittent cutting out and restarting.
2. Speaker or speaker wiring: Examine the speaker(s) and the wiring connecting them to the amplifier. Loose or damaged speaker cables, faulty speaker connections, or even damaged speakers themselves could lead to the intermittent behavior you're experiencing.
3. Overheating or thermal protection: Amplifiers often have built-in protection mechanisms to prevent overheating. If the amplifier is overheating, it may shut down intermittently to cool off before powering back on. Ensure that the amplifier has proper ventilation and isn't placed in an environment where it's prone to overheating.
4. Internal component issues: There might be a problem with internal components such as transistors, capacitors, or resistors. These components can sometimes degrade or fail over time, causing intermittent issues like the one you described. In this case, it may require professional inspection and repair.
5. Other external interference: Consider any other factors that could be causing interference with the amplifier. Nearby electrical devices, radio frequency interference, or even faulty instrument cables could potentially disrupt the amplifier's performance.

It's worth noting that troubleshooting electronic devices can be complex, and it's often best to consult with a qualified technician or reach out to the manufacturer's support for assistance. They will have the expertise and knowledge to diagnose and resolve the issue specific to your amplifier model.

Check wiring and connections to the speaker that is not working. Reverse speakers to localize problem.

Simplest is to use the LR button at the bottom of the channel strips you want to send to the main mix. Make sure you set the gain for each channel in use so that the clip light just occasionally blinked then back off a fraction.
If you want to use sub channels assign the strip to the appropriate one 1/2 or 3/4 and the assign the sub to the main mix and bring the subs up.

usually with a blown speaker you will get sound but it sounds like there is an abundance of paper very loose on the speaker, so if there is no sound at all try taking the box apart if you are familiar with stuff like this and check to see if there are any loose wires or blown capacitors

The bad news is it could be any of them. or it could be the lighting- CFL's and regular flourescent lighting are bad for audio, as are switching supplies used in TV's, microwave ovens and some musical gear. They are worse than lighting dimmers for noise.

The thing to do is start at the speaker itself and work through the chain of devices to find the one distorting. An old transistor radio is useful here. Most actually do have enough power to faintly drive a large speaker- listen for scraping and rattling- it would mean the voice coil windings may have come loose or the coil form is damaged from heat.

Move back to the amp input and try again- this time listen for a clipped sound if the speaker checked out okay. It would sound like the Charlie Brown adults in the cartoons. That would be a failure of an active component in the amp. If you now hear rattling or scraping- the speaker voice coil is bad and should be repaired or replaced.

If it sounds good, move back to each deck. apply your radio- volume turned down to an input it one is provided. Each should sound clean like the amp did. If no sound or distorted sound is found here- which is the most probable location, it is likely one of the IC chips is at fault. Likely a 4558 if an IC fault, otherwise suspect dirt or hair on the encoder connected to the spin platters.

Couplers and adapters available at any Radio Shack

Do you live near an airport or some other place with a lot of radio traffic? I've had a similar problems with some of my speakers because of intense radio frequencies. if the problem persists in other places that the speakers are placed, perhaps you might need to run some shielded cable to block interference.

UPS will not help this. Make sure you are using GOOD quality balanced cables, preferably XLR to connect to powered speakers. Make sure ALL (read that "ALL" closely) of your equipment is powered from the SAME receptacle or power module... this means run power to your mixer or speakers alongside your audio lines or snake between the units. This includes ANY other devices tied into your mixer with the exception of truly ground lifted DI's.

Good way to pop speakers is to run them on stage power and mixer from plug at the rear of a room... The common mode ground noise will exceed the common mode capability of the audio inputs and fry them.

In case you don't have one, here is a link to the manual:http://www.peavey.com/assets/literature/manuals/80300573.pdf I don't know if you are using a separate crossover between the mixer and the amp but here is the simplest explanation.I just reread your question and I don't even know whether you have a Peavey amp. Run proper cables from the main output of your mixer to the main inputs of your power amp.They will be 1/4"shielded cables or Balanced XLR cables. Do not use unshielded speaker cables to hook the mixer and the amp together.Run speaker cables from the speaker outputs of the amp to the input jacks of your speakers.Make sure the impedance of your speaker cabinets equals or exceeds the impedance rating marked on your amp. Here is the link to the newer model PV2600 manual:http://www.sweetwater.com/store/media/pv2600_doc_manual.pdf Don't use Speakon cables unless your speaker cabinets are equipped with Speakon input jacks. Banana plugs aren't as solid a connection as the binding posts are.

Always check your cables and connectors on them to make sure the cable is good and the connectors are not loose. This sounds like a bad cable or connection between the line output of your mixer and input to your stereo.