No, because in a pure amplifier the radio part is always missing.
Depends on what your definition of "receiver" is, but most of the time - to the amplifier. Consider: if the receiver is some form of a device that receives some signal, and then decodes it to audio, then the receiver will hook into the amplifier, which in turn will drive the speakers (so the speakers go to the amplifier) if, on the other hand, the receiver is a part of a wireless connection between the amplifier and speaker, then it really serves the role of a cable, so in essence you're again connecting the speakers to an amplifier (only using the receiver as an intermediary) You would have to specify your case.
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Is this sentence supposed to be question? Any superheterodyne receiver will have an IF amplifier. It doesn't matter whether TV or radio.
ideally "line out" on the receiver to "audio in" on the amplifier, left and right... If there isn't a "line out" use the the "audio out" but keep the volume on the receiver relatively low to prevent overdriving the inputs on the amplifier.
class C
Speaker cable is used to connect the speaker outputs on audio devices such as a receiver or amplifier to the inputs on the speaker(s).
As a frequency receiver
The receiver is the amplifier for all the speakers, except usually the sub, which is most common with its own amplifier.
radio frequency amplifier intermediate frequency( If strip) in a superheterodyne radio mixer /demodulator Audio amplifier
Exciter Input filter/amplifier Demodulator power amplifier audio processor
It depends on the specific models of each, but typically, Yes. Of course you will need a 12VDC power supply for the amplifier, though. You will also need a AV receiver with a preamp output. You cannot run speaker level outputs into the input of an amplifier.
I always try to match an amplifier or receiver that is rated within the following range: from .8 times to 1.5 times the RMS rating of the speakers. The impedance of the speakers should not be rated below 5 ohms unless the amplifier/receiver is conservatively rated as 4 ohm stable.