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blog: jackson pad: editing pass

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@ -15,42 +15,43 @@ i received my first ever noise complaint!
although electronic sets are audibly quieter, they still transmit a lot of energy
into the floor. when struck, vibrations carry from the drum into
the harness and from there into the floor. moreover, the kick and high-hat
pedal action mirrors the same action a person would make when stomping, so of
*course* that's going to annoy a downstairs neighbor.
pedal action mirrors that of a person stomping, so of
*course* that's going to annoy the downstairs neighbor.
# Options to decrease vibrations
## How to decrease vibrations
the most straightforward way to decrease floor vibrations is to decrease
the energy associated with each drum hit.
the energy associated with each hit.
for example, use [beaterless pedals](https://www.amazon.com/Yamaha-KU100-Beaterless-Silent-Pedal/dp/B00FI2PE1U).
if there's no beater imparting energy into kick plate,
that's obviously going to result in less energy transmitted into the floor.
if there's no beater imparting energy into kick plate then
that's less energy transmitted into the floor.
similarly, slamming the high-hat close imparts momentum from the upper cymbal
into the stand and from there to the floor.
beaterless pedals solve both these issues.
![Yamaha KU100 beaterless pedal](yamaha-ku100-beaterless-pedal.jpg)
but even with beaterless pedals, you still have the issue of snare/tom hits
vibrating through the harness. if you want to stop all these,
you'll need an isolation platfrom [like this](https://www.thomann.de/gb/thomann_drum_noise_elimination_podium.htm).
but even with beaterless pedals (if you're willing to go that route),
you still have the issue of snare/tom hits vibrating through the harness.
if you want to stop all these, you'll need an isolation platfrom
[like this](https://www.thomann.de/gb/thomann_drum_noise_elimination_podium.htm):
![](thomann-drum-noise-elimination-podium.jpg)
or you can place the set atop a riser.
or you can place the set atop a riser:
![](drum-riser.jpg)
i was very tempted by that Thomann podium, but it's priced a bit too aggressively for me.
cheaper options include placing the set on a big rubber or foam pad, similar
cheaper options include placing the set on a large rubber or foam pad, similar
to what you might put under a washing machine or an exercise bike ("anti vibration mats").
but after browsing drum forums i couldn't find many success stories from these approaches.
maybe that's just a bias from the people who frequent these forums and anti-vibration mats
work equally well, but i was intrigued by the other approaches i saw there.
# DIY solutions
## DIY solutions
the most infamous DIY approach within these drum communities is the *tennis ball riser*:
sandwich tennis balls between two large panels (or a panel and the floor), put the drumset
@ -62,7 +63,7 @@ creator (Brian Jackson) provides detailed build instructions, some convincing
noise measurements, a believable theory of operation, and i couldn't find anyone
who tried this *without* success.
# The Jackson Pad
## The Jackson Pad
initially proposed [on vdrums.com](https://www.vdrums.com/forum/advanced/diy/1095500-new-design-impact-isolating-platform-plans-and-guide),
i've mirrored the original [design document](./jackson-pad/Jackson%20Pad%20-%20Design%20Drawings%20-%202-10-2015.pdf)
@ -79,24 +80,24 @@ transforming mechanical energy into heat energy (compressing a gas causes it to
the heat will be transformed back into mechnical energy as the pressures balance,
but the effect is that sharp impulses of mechanical energy are imparted into the
floor over a longer period of time.
it's like applying a low-pass filter to original foot stomping.
it's like applying a low-pass filter to the original foot stomp or drum hit.
i'm a little skeptical of the heat argument, but overall i'm satisfied enough
with the theory of operation to give it a try.
# Construction
## Construction
the pad materials are super practical to source. it's all off-the-shelf lumber
that you can buy at a hardware store with a minimal number of cuts.
the stock 4'x4.7' design is just large enough
for a typical 4-drum + highhat + kick + ride + crash configuration with a stool that
doesn't have a huge footprint.
for a typical 4-drum + highhat + kick + ride + crash configuration and a stool
with modest footprint.
unfortunately, it's just large enough to not be practical to move around in a car.
unfortunately, it's just large enough to not be practical to transport.
i move homes every year or two, so i wanted to find a way to make it fit in
my stationwagon.
the stock plan is makes use of four 55.5" trusses which support fourteen 2x4s running
the stock plan makes use of four 55.5" trusses which support fourteen 2x4s running
perpindicular to them:
![Original Jackson Pad](plans-clean.png)
@ -108,12 +109,16 @@ which would secure the halves when bolted. with the bolts in place, you're left
a solid 48"x55.5" pad; with the bolts removed, you have two smaller pads that can
be easily transported.
the original design leaves four 40" boards of scrap from cutting the trusses.
you can trim these down to 2' and use those as the braces. the only addition to
Jackson's BOM is sixteen 4" bolts, washers, and wingnuts.
here's what the truss + brace system looks like when bolted together:
![](trusses-bolted-together.jpg)
when constructing the platform, keep the bolts in place and secure the 2x4s atop
each truss as normal (make sure to screw them into the trusses, and _not_ the braces)!
each truss as normal (make sure to secure the slats onto the trusses, and _not_ the braces -- otherwise you won't be able to detach the braces!)
![](first-2x4-secured.jpg)
@ -135,7 +140,9 @@ you can cut one piece of carpet to the full 48"x55.5", staple it, and let it fol
during disassembly. it'll take two people to carry it this way, but it probably looks
nicer when assembled than if you carpeted each half separately.
when you're ready, just unbolt the braces, slide them off, and then fold the platform:
## Disassembly & Reassembly
when you're ready, just unbolt the braces, slide them off, and fold the platform:
![](folded-1.jpg)