Hey you sound geeks, I'm looking to build a new Boom Bike and would like to run all this past you. Please comment and help me out. : )

Goal: A compact, well balanced, light weight, energy efficient sound bike with stable well made components that can take the road. Cost? No expense limit but less is always best.

Requirements:

• Produce massive sounds approximately as good as Todd's sound bike. :)
• Use of a microphone and at least two other independent audio devices.
• Performance at peak volume for six to eight hours.
• Ability to circumvent DC power batteries and directly power device through AC external power source.
  • If possible charge batteries while plugged in. (Not a requirement.)
• When plugged in (or not) needs to power additional devices like a DJ laptop. Loss in peak performance during this time is acceptable.
• Future requirement: Electric assist "push" so that others who are not as strong can still use it. Loss in peak performance time during assist acceptable.

Shopping List So Far:

AOSOM Cargo Bicycle Motorcycle Trailer - Red and Black(L)

Price: $119

Folding FrameCubage about. 140 Liter.Specially strengthen Bottom.Trailer Weight: 35lbsMax loading : 180lbSize: 31.5x24x14inch (LxWxH)The size of the tires are 20"(Diameter) x 2.125"Length with drawbar is about: 54inchPackage Size:  28x22x14inch (LxWxH).

(2) Peavey PR-15-NEO 15In 400W 2-Way Speaker Neo +

Price: $219 each

Weight Unpacked: 31.31 lb(14.2 kg), Width: 21-1/2", Height: 28-3/4", Depth: 17"

Specs: Two-way sound reinforcement enclosure 400 watts program, 800 watts peak 8 Ohm One 15inch woofer with 2.375inch VC and lightweight neodymium magnet RX14 compression driver with a 1.4 inch titanium diaphragm 1 inch exit 90 x 40 degree constant directivity horn Tweeter protection Heavy-duty crossover Lightweight molded polypropylene enclosure Molded-in pole mounts system Heavy-duty metal grille.

(2) Sure 2x100W @ 4 Ohm TK2050 Class-D Audio Amplifier Board

Price: $44.00 each

2x 100 watt amplifier board integrates Tripath's high performance TC2000 and TP2050 chips. Powered by any DC voltage from 10V to 32V, this high efficiency design is capable of driving 4 ohm or 8 ohm speakers with up to 100 watts per channel. Volume control can be implemented via on-board DIP switches. An auto fan control function optimizes thermal management.

Possible Efficiency Modification: Is to remove the crossover in the Peavey PA speakers and install the Sure amp as instructed here. This may be a later project if I find I am loosing a lot of power. So it's possible I will only be using on Sure amp during initial phase.

---EDIT---

The best 800w amp I have found may or may not a be a digital amp it's rated Class FD which I assume means it's a push pull digital amp. But I don't really know. It seems to be efficient and I would totally go this route if it meant I could push the power I needed. 

Pioneer GM-D9500F Car Amplifier - 75 W RMS - 800 W PMPO - 4 Channel...

Boss PH3KD Phantom 3000 Watt Class D Monoblock Amplifier with Remote

Two of these look like they could push the power I need. Any thoughts?

Behringer XENYX502 5-Channel Mixer

Price:  $43.40

130 dB dynamic range, bandwidth ranging from below 10 Hz to over 200 kHz and up to 60 dB of gain and a +48 volt phantom power supply.

Batteries, I really honestly cannot make up my mind. Again cost is not an issue only capacity, weight and how many I need to buy to get the amount of power I am requiring. When I do the crude math I think the Shorai $176's are the best option but I am not sure.

• Shorai Lithium Ultra Low Weight Motorcycle Battery 18 AH PBEq 12 Vo... - Price: $176.95
• Shorai Lithium 9 AH PBEq 12 Volt LiFePO4 ATV and Motorcycle Battery - Price: $105.00
• ZIPPY Flightmax 5000mAh 6S1P 40C - Price: $89.79
• ZIPPY Flightmax 8000mAh 6S1P 30C- Price: $88.18
• ZIPPY Flightmax 5000mAh 4S1P 15C- Price: $29.99
• ZIPPY Flightmax 8000mAh 3S1P 30C- Price: $44.11

Power supply, again totally cannot make up my mind. In fact I am sorta at a loss how I would have both AC/DC power... All the inverters and supplies I have found don't seem to offer this option. Any thoughts?

And finally, how the hell am I going to fit all of this on the trailer? It's possible this is such a large setup that it would be unstable if I tried to modify the trailer design of the AOSOM. This may require me to build my own trailer but I have no metal working skills so I would have to outsource this. Anyone know of a good, and not busy as hell, metal worker?

Here is my rough sketch of what the trailer will have to have...