I get power light but no sound. does the sub remote have to be connected in order to get sound out of this unit

You have connected it to the wrong power wire - one that is only active in service mode - first key position.
You should draw a wire directly from the battery (don't forget to add a 40 amps fuse on the wire) to the amps. If you don't want them constantly operational (you will have to manually shut them down) install a relay on the wire with the command coming from a wire from the instrument key position - second position of the key. Use a voltmeter to identify the wires.

sounds like a loose ground, or a loose positive cable or possibly a blow inline fuse, and the only power your unit is getting is from the remote. triple check all your connections. use your senses, smell the amp, smell for a burned order, this usually identifies if it is something internal. but it sounds like in your case (from experience with) a bad ground. If your gound or positive is connected but not tight it may be enough to power the remote circut, but not good enough to handle the actual turn on (Click) of the circut. powering the led light usually takes about .5 amps, but powering the turn on switch usually takes anywhere from .5 to 20 amps, then the inital charging of the capacitors that are internal on every amplifier... that quick charge pulls a decent amount of curren fast (usually the first 2-3 seconds) to fully charge a small amplifer after it has clicked on. hopes this helps

have you got the auto ariel lead from the head unit connected to the remote connection on your amp?
if not then that is your problem, it turns the power on when you turn on the unit. and turns it off when you switch unit off.

hope this helps

Your amp could be in protection mode! Sometimes turning up to high or wires touching will put in protection mode! It will have to be unplugged for a day or two to drain all power out of the memory. Leave accessorie/ignition wire hooked up, just not power and ground wiring. It should reset itself.

Double check your fuses. It sounds like you blew a fuse. Check the fuse for the radio aswell as the inline fuse for you amp. On some amplifiers there is a circuit breaker reset button. Check to see if your amp is equiped for that. I did find this quote for reset out of the owners manual.
Remote Turn-on
Automatically turns amplifier on when connected to the head unit's remote output. The
amplifier will turn on and off with the head unit to save current consumption. This control
also operates the reset circuit for the amplifier's protection. It must be connected with
the head unit in order to reset protection circuits.

I would double-check your RCA's on the amplifier. You should hear a thud if you unplug them. If not they are either not hooked up or defective.

first off the amp gets power straight from the battery. the amp is used to power the subs. the subs are suppose to be connected to the amp only( never the speakers).

for the second part you mostlikely killed the wires. you should get some one to look at it and check the wires. thee speakers might need to be re-wired

Instead of connecting it to the sub output, try it on the L or R output of your amp.
This will eliminate the Denon.
If this fails, you need to test the loudspeaker driver unit whilst disconnected from the sub amp. Use a 1.5v cell (AA or bigger) connect using croc leads to the speaker's terminals. If the speaker is OK, you should hear a click. If you hear nothing, the speaker unit is faulty.

check the remote cable from your head unit to the amp first.

is the remote lead properly connected to the head unit? if the power led is on then the power cable and earth must be good, check the remote lead 2 your head unit first, if thats all good try looking at the amp to see whether theres a small switch to adjust the output going to the subs, if its very low or right off then nothing will be going through to the subs. if its on high and fine it only realy leaves the neg and pos inputs from the amp 2 the subs.

cheers, adam