Build report: Retro style Ruby miniamp

[TryingToDo613]

Very nice build. And thanks for the advice about the batteries. That clip is also very good. How many miliwatts should a power supply be rated for if you want to run it as 12v?

Don't be down about samick guitars. They build half of american brand name imports along with Cort, another maligned name. For some reason samicks don't sell good in the US but people are willing to pay 3 times as much for the same guitar with a Dean, epi or ESP logo.

[Foxpaw]

I used a 300mA rated adapter. (Good for Boss pedals too.) While I was building the circuit I measured how many milliwatts it used at heavy chords, maximum volume and gain. I can't remember exactly, but I think it was about 70-80 milliwatts.

I am primarily a bassist, but I like my Samick guitar... My bass is a Craftsman. (Maybe "Carlo Robelli" in the US?)

[squigglefunk]

I love my ruby halfwatt amp! Here's a clip:

http://lumpygravyband.com/sounds/halfwatt.mp3

and a pic:

Wow! Really-really-really awesome... What gear have you used? (guitar, cab, effects, mic, etc...)
The most wonderful ruby clip I have ever heard!
Thank you for posting this...

sure, I think the guitar was a fender squier 51 into a Boss SD-1 into the ruby amp (I built mine with no tone or volume controls, as they aren't really needed to me) into a 2x12" 4 ohm bandmaster cab loaded with an eminence V12 and a EV 12L (I miced the EV) I added reverb afterwards with garage band. The mic was a samson R11 (budget 58 knockoff)

glad you liked it!

[jrem]

How many miliwatts should a power supply be rated for if you want to run it as 12v?

Put on something that is big enough to handle it, say 500ma.  Put a one ohm resister in series with the b+, then put your DMM leads set to volts across that resistor.  The reading will be the milliamp current draw (you're dividing by 1, so the voltage drop is in effect the draw in ma).

Regards, John.