15 amp circuit VS. 20 amp Circuit

I will run all 5 power amp at the same time . And it will be for home theater .

the light dimming issue, is happening with every base when I turn up  volume .

each subwoofer is 1000 amps , so potentially , 4000 watts can be drawn  just by the amps . While the 15 amp circuit can provide max 1800 watts. ( I’m better off to use a 20 amp circuit just for subs )

now with 3 bench mark at average 300 watts per amp , that’s about 1000 watts just from the 3 benchmark amps —-> , that can stay on the shared 15 amp circuit

the 2 McIntosh 1.2k amp, each can draw 1200 amps ( so definitely a dedicated circuit just for these 2 )

Adding up your wattage, I would recommend (4) dedicated 20amp circuits. Circuit 1 Have the MPC1500 with the MCD12000, C12000,  SR7015 & Streamer. Circuit 2 (2) MC1.25KW, Circuit 3 (2) AHB2, Circuit 4 (1) AHB2.

this is taking full capacity, which probably never used but done by the spec’s

Additional (2) 20amp circuits for the subs

When not just put in dedicated 20 amp outlets bigger 10 or 12 awg Copper wiring 

I used awg 10 using a 4 wire setup my audiophile friend  showed me .

hot ,neutral , common ground ,and a isolated insulated ground  on its own buzz bar and grounding  it works great and always quiet not sharing common ground with 

everything in the house.

And for sure a heavy Copper gold outlet  Pangea $99 super heavy duty grips power cords very well