I enjoy music outdoors, particularly at the beach.  I have built a number of boomboxes and such but I have always wondered what it would take to power a zen amp.  This came up on my facebook feed:

https://www.jackery.com/products/explorer-1000-portable-power-station?gclid=EAIa...

I wonder if this could be used to power something outdoors and/or power a small rig indoors with pure battery power?

Could any of you EEs figure out if this thing could run an amp/dac for any reasonable amount of time?

Also, one of my current indoor projects is to build a larger scale outdoor sub.  I've incorporated a couple of smaller 6.5" subs in various boomboxes powered by a small 2.1 chip amp parts express sells.  They are fine, but I wanted to run something with a little more ooomph.  

So I am buying (backorderd) a 10" dayton sub that I'm going to try in a 12"X2' sonotube with baltic end caps with a 3" port.  The 10" is 91db efficient (2.83/1M).  I'll run this separate from a boombox which does not have a sub.  The small subs I have used are less efficient and put out quite a bit of bass so I hoping this will work well.

I've been using 13.8V lithium and literally run chip amps for days.  But they are class D efficient.

I've also powered my DAC with 12v batteries.  Currently running my dac with 12V linear power supply.

Dig my sub Donnie.  I think you have used a sonotube, right?

Seems you and I have been doing a lot of conversing out here Donnie.  Maybe we just have too much time on our hands or our projects are boring...

My sonotube sub is getting closer to complete.  I need to figure out a grill for it and do a final coat with Duratex.

At first I was not impressed, but I let it play a while and then messed around with the amp settings.  Those 2.1 chip amps with crossover, bass volume, mid/treble volume, and brightness can make just about any speaker sound OK to pretty good.

I gained some lower bass for sure.  Its not overly loud running on just 12V but I imagine I will up that to 24.  In order to get danceable bass, I may have to add a separate tube and maybe go to two amps.

I did acheive the goal of a lightweight "box".  Its very lightweight so carrying it to the beach will be easy.  I'm a little concerned about the tube getting dented but we'll see.

Yes, more power!

The drill battery wouldn't fit in the current case, but I may end up building a new amp case.  I have a source for good quality compact batteries that seem to last forever, but not sure what they have around 24V.

I may end up with a five piece system - 2 DIY DM 945s, 2 subs and the amp case.  

Wheels won't work because I am on the beach.  I have a concrete mixing tub that I use like a sled to pull my stuff over the sand to the spot where I set up my fire, table, cooking stuff and of course, LED party lights.  I end up making a couple trips.

Palo,
I love 945's. My pair of oversized clones always end up back in my garage, they are perfect for my workspace. I've built several speakers to replace them but nothing comes close.
Snappy bass and those HiVi ribbons are so goooood.

Anyway, More Power is always good! Too much is just enough.

Donnie here is the speaker portion of the system.  945s with about 5 coats of duratex.  And the tube sub.  I had to put the grills on to keep the drivers from getting damaged.  In a homage to Randy I put handles on the 945 clones.  
I haven’t figured out a handle for the sub yet.

It is very loud even with only 12v.  Not sure I need 24v.  

Today I am building the amp box.  The amp shown is parts express.  Not sure the picture is actually posting.

....interesting...I was fortunate to work with a bunch of young engineers...it was enjoyable to listen to there ideas...they seem to look at things in different ways, then come up with some good ideas...like this person...cool and functional

Greg

Took the rig to the beach   I was surprised by the imaging. https://i.imgur.com/2GRXLrQ.jpg[/img]