jcarr
Responses from jcarr
| 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... | |
| Who needs a MM cartridge type when we have MC? Fleib: The joint pipe is usually made from aluminum or duraluminum, which although at 2.7g per cubic cm is heavier than beryllium (1.85g) or boron (2.46g), is certainly lighter than diamond (3.5g) or sapphire (4g). Keep in mind that a component th... | |
| Zyx Universe. O.24 mv vs .48 mv with low eff spkrs Audiotomb, there should be no issue if the volume knob is near the end or all the way up. Usually, all that a volume control does is attenuate the strength of the incoming signal, which the preamp circuit then amplifies by a fixed amount of gain. ... | |
| Who needs a MM cartridge type when we have MC? Hi Nandric: In every phono cartridge that I have seen, the cantilever rod is joined to the pivoting part of the cantilever assembly by means of a slightly larger tube called the "joint pipe". Joint pipes of different length make it possible to cha... | |
| Zyx Universe. O.24 mv vs .48 mv with low eff spkrs Hi all:The reasons why a designer may want to make low-efficiency speakers is usually because he needs to make a lot of bass from a small enclosure, or is striving for a very flat frequency response, and is using the crossover to burn off (correct... | |
| Anyone try the replica B-60 Fidelity Research VTA? Dear Lou:IMHO, analog audio today is saddled by more than a few unjustified myths and misbeliefs. These unfounded beliefs are fettering the progess that audio engineers are able to make, and are also preventing audiophiles from extracting the full... | |
| Channel Balance on Dynavector XV1-S Hi Moryoga: Changing the azimuth will affect the channel crosstalk, but will not accomplish much for the channel balance. A difference in channel output levels (balance) is better addressed with separate channel gain controls in either the MC head... |