Recent content by dave slagle

  1. dave slagle

    Miyajima Labs 1.0 mil Infinity Mono

    I would never play a mono record with a cartridge with low or no vertical compliance. At high frequencies where the velocities are the highest due to the riaa curve the pinch effect causes a conical profile to have movement in the vertical plane and if there is no compliance to absorb this...
  2. dave slagle

    Zero Distortion: Stacked Quad 57s

    for example????
  3. dave slagle

    Zero Distortion: Stacked Quad 57s

    I'm with you on the broad strokes but in order to get surgical precision you either need to go digital or use steep slope filters, both of which are sonic deal breakers for me. dave
  4. dave slagle

    Zero Distortion: Stacked Quad 57s

    I think this is key. I would bet the bulk of the bad experiences with EQ's are with the 10 band units we all had in the past. In those, each band was an octave. In order to make this work steep high Q filters are needed and that is exactly the type of filter that has the 'all the king's...
  5. dave slagle

    Zero Distortion: Stacked Quad 57s

    agreed 100%... It can even be argued that having multiple tonearm cartridge combos for different flavors is simply a means of adjusting EQ. I suspect the bulk of the bad name given to equalizers (and tone controls for that matter) is due to their implementation and not the underlying concept...
  6. dave slagle

    Zero Distortion: Stacked Quad 57s

    the line level signal that drives the quad amps also drives a permalloy 50 amp that drives the speaker level inputs of the plasma.
  7. dave slagle

    Zero Distortion: Stacked Quad 57s

    This becomes a very slippery slope and ultimately comes down to what you are trying to achieve. If the goal is replication of some mythical straight wire with gain then I agree with your premise. However; if the goal is creating the most enjoyable individual listening experience then it can be...
  8. dave slagle

    Zero Distortion: Stacked Quad 57s

    The plasma tweeter adds a significant amount of air and ambiance to the overall setup. dave
  9. dave slagle

    Zero Distortion: Stacked Quad 57s

    Hey, JP is fighting the registration spam-bots so until he can respond and I will handle many of the technical questions in the meantime. The speaker cabinets are made by a craftsman in Maryland to this specific project. In the original '57 design a single amplifier drives an input...
  10. dave slagle

    Thick Vinyl Records

    it was proposed to me last year during the lecture at the ETF that thinner 120-140g records are better since the material flows better, keeps a more even temperature while pressing and cools quicker and more uniformly leading to more consistent results. The swiss copywriter that proposed this...
  11. dave slagle

    HumminGuru - an inexpensive desktop RCM

    hey Neil, great work!.... any opinions of following your procedure above with the 25% premix in the nalgene bottle and then mixing several 1 gallon jugs of distilled water at once by putting 22-33 drops in each? This would provide several gallons of ready to use solution.
  12. dave slagle

    Anti Skating?

    I see no spot for the age of the damper in the formula used for low frequency cartridge resonance. Sure, as a damper ages its properties may change. This change would be included in the compliance part of the formula and should not invalidate it. In fact *if* the formula is to be trusted, this...
  13. dave slagle

    Anti Skating?

    the math says that doubling the mass should 1/2 the Fres and in my experiences I have yet to see this happen. the Korf audio guy found the same thing but in his case he changed the compliance. http://korfaudio.com/blog70 dave
  14. dave slagle

    Anti Skating?

    Try this experiment: Take a situation where the calculated and measured resonant frequencies match and add weight to the headshell to double the mass and see what happens to the measured and calculated resonant point. dave
  15. dave slagle

    The pure analogue LP purveyors, in order of excellence in presence

    to get back on topic. I believe the above requirement excludes anything that had been cut on a Neumann cutting lathe without the MT-75 or similar console since the preview to set the groove pitch is analog but then the signal is digitally delayed and then fed to the cutterhead. The MT75 has...
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