intactaudio
Responses from intactaudio
| Elrog 300B vs Takatsuki 300B tubes What I am referring to is the filament voltage at turnon and this has little to do with the value of the cathode resistor. If the filament glows brighter at first and then settles down to "normal" it is being unduly stressed on turnon. This goes... | |
| Elrog 300B vs Takatsuki 300B tubes May it be that the filaments of the Elrogs are very bright after switching on the amp for 2 or 3 seconds and then the brightnes is decreasing within the next about 5 to 10 seconds?Brightness on turnon that slowly dies down is a sign of overvoltage... | |
| Phono stage w/automatic Load-Impedanance. Allen was a big proponent of using the "Neumann" time constant in his designs which shelves the response with a corner at 50Khz. Using a "normal" riaa puts the info at 750Khz about 32dB below the value at 20Khz but including the "neuman" drops tha... | |
| Phono stage w/automatic Load-Impedanance. heyThe cartridge is not physically generating at these frequencies.Agreed....It's an electrical resonance at a particular frequency which can cause overload or oscillation.doesn't this contradict your first statement? In order to excite a resonanc... | |
| Phono stage w/automatic Load-Impedanance. I have simulated it using J_carrs model and indeed considering the simple ideal model a MC cartridge can in theory resonate with cabling capacitance in the Mhz range. However in spice, you are feeding a signal from a generator that has no problem ... | |
| Phono stage w/automatic Load-Impedanance. Can someone please tell me how this resonance in the MHz range is being excited? dave | |
| cartridge demagnetization Lyra carts such as the Delos use a paramagnetic grade of iron for the coil formers, i.e. will "conduct" magnetism but resist storing it, so residual magnetism should be minimal anyway?I think you mean "soft magnetic" instead of paramagnetic.dave | |
| Is it worth refurbishing my tube Marantz? In any case look at the tubes inside. Sid used the telefunken ecc803s in many of these and the tubes inside may match the value of the 7C.dave | |
| NAGATRON HV9100 Well Vinyl Engine says it was $400 new but doesn't mention if the pre-preamp was included. It also mentions that it is "rare" I for one would like to hear any info on this cartridge and have been digging with little real info being found.please gi... | |
| NAGATRON HV9100 I have one with a broken cantilever. Have been looking for another to see what they are about. No idea of what their value is... maybe try ebay and let the market decide.Really rare or esoteric things can be all over the map. If you find the right... | |
| MC Step Up Math In addition to what Al has said above. Once you understand that there are two different things at play here that should have no fixed relationship to each other, it becomes a little easier to understand. One is the load the cartridge wants to see.... | |
| Clearaudio Azimuth Optimizer V Fozgometer For a bit more than the Fozgometer, you can get a copy of Adjust+ which does azimuth, speed stability, overall speed and frequency response measurements.It is computer based so all the data is available for future reference.If you download the man... | |
| Audio Desk Systeme Record Cleaner I wrestled a 3 day loan of one from Robert at Ultra Systems for RMAF and was cleaning records nonstop at the display table for the show. Cleaned 165 records over the three day period without any issues. I simply changed the fluid after the second ... | |
| New Schroeder linear tonearm, any thoughts? Hi Doug,even with an IP contract in place, you are still at a situation where a corporation with deep pockets can do what they want to litigate the life out of the small guy.sadly it happens and many corporations operate by simply comparing the nu... | |
| New Schroeder linear tonearm, any thoughts? @Frank - are you ready to retire on regular monthly royalty payments? I know some good IP attorneys. ;-)Alas even if patented a manufacturer with deeper pockets than the inventor can simply buy one reverse engineer it and come out with their own. ... |