[78-L] Tonearm/Cartridge Mismatch - Compliance Remedies?

[Nathan Coy]

Doug,

Thanks so much for addressing the tonearm weight location and sharing the
specifics of your experience along. I sometimes have reservations about
impacting how high quality components are designed to work so I was
inclined to ask more questions. What my concern was is that its modifying a
tone arm as opposed to using a tone arm designed heavier  tone arm for an
application and wanted to dig a little deeper. In the mean time I also
found a reference in the technics manual for the EPA-500 that when using
the EPA-501H wand that to add weight beyond 1.75 grams it should be done
with shell weight and not with the counter weight. This seems to partially
reinforce this practice in a manufacturer manual about ways/cases to add
weight when using lighter tonearms (or wands) also. So many formats, so
much to learn, on and on and on.

I'll have to dig up the Feinstein episode. It's always nice to see/hear
some visibility for recorded sound preservation.

Thanks again,
Nathan


On Thu, Dec 12, 2013 at 2:33 PM, Royal Pemberton <ampex354 at gmail.com> wrote:

> So in a way all those people who put coins on their tonearms thinking
> they'd make them track better had it half right....the added mass would
> help lower the effective resonant frequency of the tonearm/cartridge/stylus
> combination in those el cheezo players (which could potentially reduce some
> bass-related skipping issues) but they goofed by not re-adjusting tracking
> force back to the same pressure as it originally was.
>
>
> On Thu, Dec 12, 2013 at 10:09 PM, Doug Pomeroy <audiofixer at verizon.net
> >wrote:
>
> > Hi Nathan,
> >
> > The video showing my turntable and arm is in one of Michael Feinstein's
> > Public TV programs (the one titled "On The Air") but it is very informal
> > and I was not asked to explain much of anything, definitely nothing about
> > why I put a coin on the cartridge to increase its weight.
> >
> > You raise an interesting question about mass and moments of inertia
> > (I think), and I have no sophisticated answer for you.  I long ago became
> > aware that increasing the tracking pressure by decreasing the weight at
> > the pivot end of the arm is not the same as adjusting for the same
> tracking
> > pressure by increasing the mass at the cartridge end, which improves
> > tracking noticeably.
> >
> > Doug Pomeroy
> > Audio Restoration and Mastering Services
> > 193 Baltic St
> > Brooklyn, NY  11201-6173
> > (718) 855-2650
> > audiofixer at verizon.net
> >
> >
> > > Message: 10
> > > Date: Thu, 12 Dec 2013 10:11:12 -0800
> > > From: Nathan Coy <nathanpcoy at gmail.com>
> > > Subject: Re: [78-L] Tonearm/Cartridge Mismatch - Compliance Remedies?
> > > To: 78-L Mail List <78-l at klickitat.78online.com>
> > > Message-ID:
> > >       <CAKQkP5ACDeUSQZNBH4yH8KMKV=
> > A7w7JRXX2D6RRkNFXeiv7vvQ at mail.gmail.com>
> > > Content-Type: text/plain; charset=ISO-8859-1
> > >
> > > I am curious on this in respect to different effects on the tonearm
> based
> > > on where the weight is added. It seems like this is a case where the
> > > placement would make a difference based on the geometric relationships
> of
> > > the tonearm. Is that something that the videos speak to? So does
> > > concentrated mass on a head shell behave different than more mass
> > > distributed through a tonearm in general? and if so in what ways? Even
> > > different locations on the head shell could affect the way a fixed
> weight
> > > acts on the lever, is there a sweet spot? Are there advantages and
> > > disadvantages as opposed to just using a tonearm with more mass, a more
> > > compliant cartridge, heavier cartridge, or wand with more mass? I look
> > > forward to getting their experienced insights. You mention a video of
> Mr.
> > > Winner. I am curious if you could share the location of Mr. Pomeroy's
> > video
> > > whether in hard copy or online. These seem like they would be great
> > > resources, so if you could share links references that would be great.
> > That
> > > is of course with respect to copyright holders (tongue in cheek).
> > >
> > > Thanks, and please post a link to the video when it becomes available,
> > >
> > > Nathan
> >
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> >
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