I finally finished the Squelette amplifier
(Volume 23, “Mini Chip Amp”). The instructions were easy to follow. I built my chassis
from brass sheet and some cherry for the
endpieces. The metalworking is poor, but hey,
I’m a woodworker! Pictures of my amp are at
brianandonian.com/LM1875chipamp.aspx.
The amp sounds really good: no hum, noise,
or buzz. The headphone jack is a must. Ross,
thanks for the plans. This was a fun build!
—Brian Andonian, Plymouth, Mich.
AUTHOR ROSS HERSHBERGER RESPONDS: Thanks for
the pictures to drool over, Brian. I love the wood/brass
combo. As for the sound, don’t be shy about throwing
it at some high-end speakers. More than one audiophile
has been amazed by what these little chips can do.
Tell me it isn’t true! I saw the latest issue
of MAKE at a bookstore, and it was the same
size as every other magazine. I thought
Popular Science made a big mistake when
they “upsized.” Now you appear to be doing
the same thing. I’m very sad. Nostalgic, too.
But I’ll continue reading MAKE.
—Roger Garrett, Honolulu, Hawaii
EDITOR-IN-CHIEF MARK FRAUENFELDER RESPONDS:
The issue you’re describing is actually our MAKE Ultimate
Workshop and Tool Guide ( makezine.com/2011/workshop).
It’s not MAKE magazine but an annual special edition.
Have no fear — we love the size of MAKE as much as you
do and have no intention of changing the size!
I’m from a long line of makers, but my
training is in urban public health. In Compton,
Calif., most of the community’s health problems (poor food, housing, violence) can be
traced to the loss of factories and living-wage
jobs for blue-collar workers. Talk all you want
about retraining and scholarships, but we
have a lot of good people with good skills who
are makers, born to work with their hands.
MAKE AMENDS
In Volume 25’s Secret Knock Gumball Machine, page 95,
we listed the wrong clear plastic globe from 1000bulbs.
com. The correct part number is #3202-08020.
In Volume 25’s Sous Vide Immersion Cooker, page 107,
we listed the wrong clear acrylic box from Amazon.
The correct part number is #B000NE9VJE.
In Volume 25’s Primer: Make and Use an Arduino, page
65, we erroneously reversed power and ground for pins
J- 7 and J- 9. The text should read: “To connect the chip
to power and ground, jumper [...] J- 7 to right ground,
and J- 9 to right power (Figure G).” Figure G is correct.
In the calculation in Volume 25’s Remaking History, the
crank diameter is 6", not the “crank handle” (radius).
The equation is correct for a 6" diameter and 3" handle.
13 Follow us @make
