Topic: KORG MR-1 External Power Source

[Nick's Picks]

or your cooking some dogs in your gear bag (and sizzlin' the onions on the apogee).


I have not tested the output of my AC/DC adapter, but i'm pretty sure it outputs 5v.
I would bet that 6v would power it fine...but i'm not going to do that unless I bust it open again, find the chip that handles the incoming power and see what its tolerance is.

[H₂O]

psp2>mr1 eh?  I might have to hear that!

problem #1.  no problem.  thats the unit being powered / charged etc .. by the external.  Mine does the same thing.  runs for a long time though, and that is whats key.

#2.  sounds like cable issues to me.
I guess you need to order one from that hydra guy.


here's to another DSDeliceous recording!!!

On #1 thanks for the input - good to know that I wasn't going crazy
On #2 I think the cable between the MR-1 and the PSP is fine - took it apart and looks very solid.  Thinking back when I broke down one of my actives was not screwed in exactly right so I think the issue is here.   I will try again this Sunday at Bethel - I'll keep a set on the HDD and let you listen prior to the show if you would like (since you will be there - I know Carl).

[Nick's Picks]

yea...that'd be great.
:-)
see you there

[H₂O]

I believe it's OK to hook up a couple of 7805's in parallel... so then you have twice the capacity.  In theory anyway.  I'm quite sure I read that somewhere... never tried it myself.

On the whitepapers I have seen for a few linear regulators, they show a way to run high current sources using one regulator.   They accomplish this by using a high current transistor in addition to the regulator.

Check the white papers of the regulator that you choose to use and may be this is a supported option instead of running 2 regulators in parallel.

[Nick's Picks]

or...
just buy a PR battery and be done.
:0

[BlackCrowe]

This looks like a good, cheap, neat, small and comfortable option as well...may even have the correct rectangular power plug, maybe someone with both a Korg MR-1 and Sony PSP can check if it fits...

http://cgi.ebay.de/externer-Li-Ionen-Power-Akku-Accu-Batterie-Sony-PSP-NEU_W0QQitemZ120184357068QQihZ002QQcategoryZ100828QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

[swordfish]

Hello,

I hope it is OK that I'm using this old thread!

After years I got my Korg MR1 back, but the internal and an external battery won't charge anymore. 

Unfortunatley the link(http://www.premiumpowerproducts.com/Products/PowerBank.html) won't work anymore, any suggestions which small powerbank I shall buy.

Thanks in advance,

SF

fyi..  I found a small external Li-Ion battery pack that works with the MR-1 at Frys Electronics.  It's called the Powerbank and costs $60 at Frys.  It has a capacity of 4400mAh (@3.7V).  There's a switch on the Powerbank to select 5V, 6V or 8.4V.  The PowerBank is pretty small (3.3"H x 2.3"L x 0.84"W) and weighs 4.4oz, perfect for stealthing.  It has a charging indicator light and a series of indicator lights showing how much charge is left.  It comes with all types of connectors for cellphones, ipod and other electronic devices.  And a leather pouch to carry everything. The barrel connector labeled 04-D is the closest fit for the MR-1.  I found it to be a bit too tight a fit, so I filed down the yellow tip a bit around the outside of the barrel.  Fits perfectly now.
I recorded a show last night using the MR-1 and PowerBank.  I ran the MR-1 powered off the PowerBank from 7:30pm when the opening bands started til the concert ended at around midnight.  The PowerBank supplied the power for the entire evening.  The internal battery on the MR-1 still showed a full charge.  And there was still enough juice left in the PowerBank to play back the concert on the MR-1 listening through my earphones.   So I'm very satisfied with it so far.  This is more power than I'll probably ever need recording a gig.

Here's a URL link if you'd like more info on the Powerbank.   You can download the manual from the site, too.

http://www.premiumpowerproducts.com/Products/PowerBank.htm

[jb63]

Hit me up on Friday and I will solve your mr1 needs.

So it doesn’t power up at all right now?

[swordfish]

Hit me up on Friday and I will solve your mr1 needs.

So it doesn’t power up at all right now?

It doesp power up with the wall outlet and the transformer. But the internal battery works only for a minute or so, if I pull the transformer plug .  Might need an old battery pack if someone has one collecting dust.

Or a small power bank the size of the MR 1 and a "good" cable to connect the two.

[jb63]

That one minute is tough. You can use it to hot swap the battery box that holds 4 AA cells. So you can buy 2 of them and you are adding the weight of 8 AAs to your bag.

https://www.adorama.com/kobatpmr1.html

They are discontinued but it can’t be hard to build one or 2. You can borrow one from me to check it out.

Here’s what you need to find for a usb battery.

https://www.amazon.com/gp/customer-reviews/R2CCS1DKUWF5WT?ref=va_cr_lb

Here it is in Canada. Which is all I could find right now.

https://www.amazon.ca/Tera-Grand-7800mAh-Digital-Display/dp/B00F02UKYE

[swordfish]

That one minute is tough. You can use it to hot swap the battery box that holds 4 AA cells. So you can buy 2 of them and you are adding the weight of 8 AAs to your bag.

https://www.adorama.com/kobatpmr1.html

They are discontinued but it can’t be hard to build one or 2. You can borrow one from me to check it out.

Here’s what you need to find for a usb battery.

https://www.amazon.com/gp/customer-reviews/R2CCS1DKUWF5WT?ref=va_cr_lb

Here it is in Canada. Which is all I could find right now.

https://www.amazon.ca/Tera-Grand-7800mAh-Digital-Display/dp/B00F02UKYE

thanks for the info....I will look into the options...I am also looking to buy a used or new sled....contacted Korg and the don't have replacement batteries of sleds in stock anymore.