New idea for portability

What if you could rig a laptop battery to the back of an mpc1000? all it would take are power adapters right??? n then you would have a totally portable mpc. Anyone else ever have this idea? Would u use it?

just a thought

actually this video makes me not want to mess with laptop batteries.
http://www.gadgetizer.com/gadgets/batteries-powercells/

im gunna get one of these:
http://www.xantrex.com/web/id/233/p/1/pt/5/product.asp

i heard someone say that the mpc1000 uses less energy than a laptop, n that thing gives a laptop like 2.5 hours so itd work out

^^^^^
Did you try this? If so, how is it wworking out?

This would be really dope if this ish works. I thought it was not possible, using battery's to run the 1k. I thought I read something about it. I believe Akai wanted to built in something like an battery in it in the first place, but it wouldnt have not much use cuz the 1k needs far more power the battery could supply. Or this was just a marketing thing so some peeps would also buy a 500.

If u want' to be sure, I think Nym can put some light on this subject

So jay, how did that battery thing work out?

You could definitely hook a battery up in there to power the MPC, it certainly isn't doing anything fancy or high powered...

More the problem you're going to need to deal with (especially if you want to be able to go powered or battery) is how you get the battery power in between the power supply and the rest of the MPC. There are some serious capacitors in there and they could at least seriously hurt you if you discharge them on yourself and could quite possibly kill somebody if they were unlucky.

Worse still, if you stick a battery in there how are you going to get it to charge while on power and power the MPC when you are off power. If there are any serious Electrical Engineers on the forums here I bet one of them could figure out how to get a battery cell in there and possibly come up with a kit, but again this is a pretty dangerous mod. I wouldn't want to figure out how to do this... sell the parts... and then have to worried about getting sued because somebody shorted themselves to a cap or forgot to unplug while they were taking the thing apart.

I have to admit though, would be a good use of some of the extra space inside that box. I was thinking about how I might be able to squeeze a phono or mic amp in there for recording, but battery power would probably trump those features.

^^^

My thought was to make it like a battery pack that the 1k could sit on top of. And to make it rechargeable in the same way you recharge a high end remote control car. That way you wouldn't have to mod the MPC in any way.

I am an electronic engineer.

If you are serious about putting a battery INSIDE the MPC then you need to have at least half a clue about what you are doing.
I would suggest you look at the service manual. (it was posted on here by some kind soul. go and find it)
You will then discover that you need to provide +12V, -12V and +5V supplies.

You need to measure the current consumption of each power rail under normal operation to determine the total power consumption. Then work out how long it needs to work off of battery power. Now you need to get a battery which is up to the job.
Good luck getting a battery with 3 different outputs. I suggest you go for a 12V battery, sub regulate this to get the +5V and derive the -12V by using a simple 555 based circuit (try googling negative voltage generator circuit).

Obviously the battery must fit inside the box somehow, so this may dictate what battery you use. Building circuits to convert one DC voltage to another is pretty simple and you can probably find lots of information on the internet I'd imagine.

onetwothree NOT IT

Your not going to get the battery to mount inside the 1k. There isnt any room for anything. I think the idea of the battery under would be the most logical. but in all reality what type of lifespan are you looking for on this thing? ANd how much weight before its no longer practical for portability?

When this topic started a few months ago I thought of an external battery.
Just like those old rechargeble battery units u had for the gameboy back then:

I just plug mines into the wall.

For internal, it's really not like the thing has a bunch of room inside. There is some here, some there, but not just an empty space. The HD space is the only place, and that assumes you don't have a HD obvioiusly. The battery in the link looks promising but i realize why the 500 lacks alot of features. Between the stereo outs, assignable outs, midi, spdif, and record ins, that's alot of recabling for me if were to be on the go. Even with out that, it's not hard to find an outlet.

hi sorry to drag this one back up- but have required to get my 1k running off battery for an upcoming show (next monday)> the issue being the internal requirement for 12v, -12, 0,0,5v and 5v power post the internal transformer.

By using two batteries, one with the poles reversed and a -12v regulator (a 7912 i think) and the other with 12v (7812)and 5 v (7805)regulators i managed to get it working. i used the - off the normally oriented battery and the + off the inversed summed together to get a common for the two 0volt rails. It ran for a couple of minutes and then crapped out- possibly due to using <1a regulators. The 1k still worked with 240vac (phew) - i've now got some regs with higher amp ratings and heatsink and a fan so I'll let you chaps know how the experiment goes. So far looks pretty hopeful.

The batteries werent laptop but pretty big, similar to these http://uk.rs-online.com/web/search/sear ... &R=5375494 space isnt an issue for me on this gig.

if you try this no responsibility accepted for melting your mpc- let me melt mine