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

[Nathan Coy]

Granted the technics recommendation is a slightly different thing as it is
adding uncompensated weight, still seems to relate somewhat though. Nice
explanation Iñigo.



On Thu, Dec 12, 2013 at 4:01 PM, Nathan Coy <nathanpcoy at gmail.com> wrote:

> 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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