jcarr

Responses from jcarr

Telarc 1812 revisited
Bifwynne: There are three different versions of the Telarc 1812 that I am aware of, and they are cut differently. The original version was cut by Stan Ricker and has "SR" engraved in the deadwax (groove leadout area). The second version, cut by Br... 
2013 RMAF Analog Reports + Meet and Greet
Pcosta: Let me rephrase the above so that you're not forced to look up numbers on our website.Self-impedance 4.2 ohms, inductance 11uH, output voltage 0.56mV (measured with CBS test record; 5cm/sec., zero-to-peak, 45 degrees).Compliance at 100Hz: ... 
2013 RMAF Analog Reports + Meet and Greet
OK, Pcosta. Electrical data and mechanical compliance same as Atlas. Weight lighter at 9.2g.kind regards, jonathan 
2013 RMAF Analog Reports + Meet and Greet
Pcosta: Are you asking for a list of specifications or a technical description, or...?If so, I suggest that a separate thread be made, since it wouldn't feel appropriate to pollute this thread (LOL).If you visit our website, you can see a photo (o... 
Stylus Rake Angle
Lew, I haven't carefully studied the Arche headshell, so take this with however much salt as you want.Since the Arche's pivot for VTA adjustment appears to be placed above the top of the cartridge rather than at the stylus tip, it seems to me that... 
Telarc 1812 revisited
Hi Raul:>If a tonearm always is important the main actress is the cartridge and in specific: the cartridge self tracking abilities.That doesn't describe my experiences. I can take the same cartridge and install it in different tonearms, and get... 
2013 RMAF Analog Reports + Meet and Greet
Although I won't be there personally, my latest "Lyra Etna" cartridge design will be playing in public for the first time at the RMAF. I understand that one cartridge will be playing in the Vandersteen/Rick Duplissea room; other rooms have volunte... 
Stylus Rake Angle
Peterayer:>I wonder if anyone has thought about designing an arm which would automatically compensate overhang and VTF for VTA changes.Certainly. To maintain a constant VTF, the tonearm vertical bearing should be kept at the same height, regard... 
Stylus Rake Angle
Although my own experiments and experiences cause me to doubt some of the charts and statements on Yosh's webpage about VTA, overall it remains worth reading.http://www7a.biglobe.ne.jp/~yosh/vta.htmI will add that speaking as a cartridge designer,... 
Stylus Rake Angle
Wntrmute2: IMO, visual observation of SRA with USB microscopes is not a waste of time - if it is being done correctly (which I have found is another very big if). But as I wrote above, 92 degrees was never an industry standard. Even the Jon Risch ... 
Stylus Rake Angle
Nwright: what came as a surprise was when Stereophile (not Michael) switched around the photos and captions, so that the SRAs and cartridges in the published article didn't match up. Corrections were printed in a follow-up issue.FWIW, there never ... 
Lyra Delos and Soundsmith
Hi Bifwynne: I've been working on the documentation for a new tonearm cable that we'll be introducing shortly. It's a twin-axial shielded cable with very low capacitance (32pF for 1.2m, including connectors). The low capacitance is so that a wider... 
What is the "correct" VTA for the Lyra Atlas?
One parameter that will absolutely affect tracking performance is the effective mass of the tonearm. It may look crude, but adding pieces of mortite / blutak to the headshell is a good way to adjust effective mass.Unfortunately this method only al... 
Burn in Step up transformer with ipod.
If we analyze what a transformer is, it is a length of signal-conducting wire (s) that are wrapped around a permeable core. As a purely passive device, it has less to go wrong than with an active amplifier. The possible points of failure due to to... 
Similar sounding of Lyra cartridge ?
Here is link to an Audio Aylum post comparing the Delos with various other cartridges (including some mentioned in this thread):http://www.audioasylum.com/cgi/t.mpl?f=vinyl&m=880112hth, jonathan carr