jcarr
Responses from jcarr
| Who needs a MM cartridge type when we have MC? My experience with test LPs is that they often don't agree; sometimes the differences are minor, sometimes they are bigger. Use two different test records (of good quality) and you'll get two different frequency response curves. Likewise for cross... | |
| Who needs a MM cartridge type when we have MC? Hi Fleib:>The mechanical performance overwhelms the electrical and shunt capacitance combined with inductance serves to lower high frequency resonance.Overwhelm is not the appropriate word. I have some experience designing MM cartridges (for ot... | |
| Who needs a MM cartridge type when we have MC? Hi Fleib: Cartridge suspensions should only allow vertical, horizontal and 45-degree flexing modes, but in reality nearly all cartridge suspensions also allow twisting, and if a given suspension doesn't contain a tension wire, fore-aft motion as w... | |
| Who needs a MM cartridge type when we have MC? Hello Nandric:>everyone who can check the data with measuring instruments should get the same result. That is why such data are considered to be objective.This assumption may be suspect with phono cartridges, inasmuch as various measurable para... | |
| Who needs a MM cartridge type when we have MC? Hi Fleib:>it appears to be quite different from Technics' boron tube cantilevers and would seem to support the notion that there was more than just one source.Could be. It also could be that the boron for Denon and the boron for Technics were b... | |
| Who needs a MM cartridge type when we have MC? Hi Fleib: Cantilever assemblies can be built completely by the cantilever manufacturer, but it is not unusual for the cartridge manufacturer to provide raw materials and/or prefabricated components so that the cantilever manufacturer can complete ... | |
| Phono rig capacitance Dear Dfel: Here is an alternative way to envision what a SUT does.As a passive device, a SUT cannot create more energy. Its voltage amplification abilities are limited to converting the MC cartridge's output current into voltage. But since a SUT c... | |
| Phono rig capacitance Dear Dfel: When using a stepup transformer, any capacitance present on the secondary side of the transformer will be reflected back to the primary side (IOW, the phono cartridge), but multiplied by the square of the primary-secondary turns ratio. ... | |
| Who needs a MM cartridge type when we have MC? Fleib: Namiki still keeps stocks of tubular sapphire cantilevers, and possesses fabrication abilities for the raw sapphire material (I believe). OTOH they do not have any more tubular boron cantilevers, and I do not believe that Namiki were ever c... | |
| Who needs a MM cartridge type when we have MC? Regarding the reinforcement plate that was previously discussed in connection with the Lyra Atlas, I should add that the plate was nominally conceived of primarily for mechanical reinforcement, but it does also improve stylus mounting precision.Be... | |
| How long before your cartridge warms up? Hi Doug: your experience with altered VTF for different operating temperature is worthwhile, but with one caveat. Increasing the VTF will make tracking more secure and bring the SRA back to where it should be, but it will not compensate for temper... | |
| Who needs a MM cartridge type when we have MC? Hi Fleib: The Audio Technica pdf doesn't show the all-important cantilever internals, and the drawing itself requires additional notation before it makes sense.The "flexible suspension filament" is only flexible across a very limited length betwee... | |
| Who needs a MM cartridge type when we have MC? Dover: I expect that the X88D was a typo for XL-88D. It could have also been a prototype, but XL-88D production started in either 1979 or 1980, so probably a typo rather than a proto (smile).BTW, Mori-san is now doing a cartridge project with Taka... | |
| How long before your cartridge warms up? Hi Audiofun, all:The fundamental cause is that cartridge suspensions (particularly the elastomer dampers) change in mechanical characteristics as a function of operating temperature, and these characteristics also change with humidity. The tempera... | |
| Cartridges in general Dear Nandric: I suppose that I should contribute something to help keep your thread going.Why don't I write a little about the Stax CP-X condenser cartridge, and add a few words about condenser cartridges in general?Condenser cartridges possess ce... |