Mackie is vague on this.
Can this 4ch mixer be powered by battery?
What, how, pin-outs, etc???
TIA!
http://www.mackie.com/products/402vlz3/pdf/402VLZ3_OM.pdf
Quote from: 6o6 on March 12, 2010, 02:04:14 AM
Can this 4ch mixer be powered by battery?
What, how, pin-outs, etc???
The three pin AC jack looks suspicious. It might be AC-only...
Call the pre-sale dept. and ask what it says on the AC adapter, which voltage etc. If it outputs DC, you should be able to replace it with a battery (at least in theory), but you will probably have to craft a custom cable. YMMV...
Quote from: sunjan on March 12, 2010, 06:25:33 AM
Quote from: 6o6 on March 12, 2010, 02:04:14 AM
Can this 4ch mixer be powered by battery?
What, how, pin-outs, etc???
The three pin AC jack looks suspicious. It might be AC-only...
Call the pre-sale dept. and ask what it says on the AC adapter, which voltage etc. If it outputs DC, you should be able to replace it with a battery (at least in theory), but you will probably have to craft a custom cable. YMMV...
Done and done
Waiting on their response...
I might have to break out a hacksaw and outright modify the wee beastie.
I may drop the Oades a line as well.
Oh, puke! sales@mackie.com is defunct.
Trying support tech email next and maybe the support forums ::)
I had one of those before I got my UA-5. It takes ac power on that multi pin input and is not convertible to DC input.
My guess is that you could run the mixer circuits as such on DC power but it very much depends on the exact setup. But it will not generate phantom power.
I have seen a few of these circuits and it seems like most have a very simple circuit to create the phantom power. For the electrical design people the circuit is known as a Voltage multiplier.
http://www.play-hookey.com/ac_theory/ps_v_multipliers.html
// Gunnar
Quote from: mshilarious on March 14, 2010, 02:44:20 PM
Voltage multipliers only work with AC. If you are trying to create the correct DC supplies for a mixer, you need DC converters for the required voltages. +15/-15V is typical (possibly only +12/-12V), plus +48V for phantom and sometimes a low-voltage rail to drive LEDs or logic circuits. The VAC input would be dropped across a +15/-15 transformer, then regulated and filtered. The +48V would be multiplied off of the +15V rail, and the low-volt supply is usually dropped from the +15V too, unless there is need for high current on the low voltage rail, in which case there will often be a separate secondary winding on the transformer to generate the low voltage rail.
Converting this to DC would require at a minimum the +15/-15V converter (there are off the shelf solutions for that) and +48V (which has to be built with components--I published one such circuit last year). Also note the unit's listed power consumption of 8W--that's probably a maximum, and typical consumption is probably much lower, but that is a huge load for a battery so you'd need to pack plenty of power.
Thanks for the tips.
No answer from tech support, and no luck getting a schematic yet, either.
The DC power doesn't intimidate me, but a quiet, switchable P48 would be new territory.
I usually lug 140WH with me, so another 50 wouldn't be noticed ;D
I want a schematic before I bust out a $bean on an experiment!
?
http://taperssection.com/index.php?topic=133283.0
Not familiar with Samson but it's battery powered. ;D
Behringer makes the UBB1002 or UB1002. It's larger, but runs on 9V batteries. I've used it and it sounds pretty good. Clean sounding.
Well, everybody is asking this... so I'll do it: I'll build a battery box for the 402, and since some people asked for it, I'll throw in
INSERT jacks ^-^
see battfor402.blogspot.com/ (http://battfor402.blogspot.com/)
RL