Monotron Ext power supply

Discussion relating to the Korg Series. Monotron • Monotron DUO • Monotron DELAY

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SynthPlaer
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Joined: Thu Nov 07, 2013 8:48 pm
Location: Ohio

Monotron Ext power supply

Post by SynthPlaer »

Got Monotrons (Original & Duo)...
Love 'em, use 'em all the time...
Batteries are killin' me...
I'm going to add DC power plugs...
I have a switchmode 3v 1A power supply...
It measues 3.38v on the meter ?

My question:
Can the Monotron handle this power supply without any mods ?
(voltage dividers/regulators etc - most PS mods use these)
Is the extra .38v a dealbreaker ?
Is 1A okay to power both units ?
Dumb questions I know... but can't seem to find any answers on the interwebs. ](*,)
Thanx for any info
All Synths...All the Time
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DrHoo
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Location: North Wales, UK

Post by DrHoo »

My current Korg gear. MS20 Mini... & now the .... Oh, maybe not !
...Had a few other Korg things over the years.
aliasing
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Joined: Wed Mar 05, 2014 8:16 pm
Location: Italy

Post by aliasing »

Hi, I use a couple of 1.2V, 800 mAh NiMH rechargeable batteries for my monotrons and it works very well.
Using a bench power supply unit, with a voltage of 2.4 Vdc, the absorbed current for one monotron was about 60 mA.
I don't want to modify my monotrons, so I think rechargeable batteries work fine.
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otzcz
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Re: Monotron Ext power supply

Post by otzcz »

SynthPlaer wrote: My question:
Can the Monotron handle this power supply without any mods ?
(voltage dividers/regulators etc - most PS mods use these)
Is the extra .38v a dealbreaker ?
Is 1A okay to power both units ?
Dumb questions I know... but can't seem to find any answers on the interwebs. ](*,)
Thanx for any info
Bit late, but: YES, 3.38V is definitely OK. I use the 5V DC source and both (Duo and Delay) monotrons runs, BUT there is an issue with pitch scale on Delay, the pitch range of oscillator is accordingly wider (so, if you want to use CV input for pitch control and don't be surprised, you have to keep 3V. Duo has some better solution of this (as seen on scheme), so it keeps the frequency of note pitch accordingly to incoming CV (if any), no matter if the power source gives 2,5 or 5V.
Digitakt, ER-1, Volca Beats + Bass + Modular, Neutron, k-2, Microfreak, Liven XFM, Beatstep Pro, Keystep, UC-33e, few FX (Zoom G1four, Razzor DD+DS, EHX Platform+HolyStain, Samson C.com), Mackie 1202 VLZ4, pair of RCF AyraPro6
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