intactaudio
Responses from intactaudio
| Advice on SUT for Koetsu Rosewood - EAR MC-4, Slagle/EMIA, other Hey Tom,Transformer "misbehavior" (ringing etc) is a function of source and load values. With a known source (cartridge impedance) and load (47K+||100pf) the transformer can be wound such that it gives the desired behavior. This is a completely ... | |
| Advice on SUT for Koetsu Rosewood - EAR MC-4, Slagle/EMIA, other The K&K link does not "back" what Ralph says. Ralph states (correctly) that for any given source there is one load that will make the transformer act in the manner for which it was designed. The K&K link assumes the transformer to be a p... | |
| Advice on SUT for Koetsu Rosewood - EAR MC-4, Slagle/EMIA, other That's a bit of a surprise- your response on AudioAsylum lead me to believe otherwise. I can point you to a number of other examples should you need more proof.I think we are missing each other on a few of these things. I have no doubt that assum... | |
| Advice on SUT for Koetsu Rosewood - EAR MC-4, Slagle/EMIA, other Dave didn't believe me when I commented on AudioAsylum some years back that interwinding capacitive coupling is affected by loading, and thus to get flat frequency response loading is a pretty important aspect of transformer use.I still don't beli... | |
| Advice on SUT for Koetsu Rosewood - EAR MC-4, Slagle/EMIA, other Indeed the 47K is there for MM inputs to properly load a MM cartridge. The 47K value is not a liability for an active MC stage but when the turns ratio of a SUT is considered things change. The 47K value reflects to the Cartridge as 47K/Turns rati... | |
| Advice on SUT for Koetsu Rosewood - EAR MC-4, Slagle/EMIA, other Over a decade ago I made the below linked post and still stand by it 100% today.https://forum.audiogon.com/discussions/thoughts-on-cartridge-loading-with-a-sut?highlight=intractaudiohttp:// Some basic takeaways I have found.-Loading the secondary ... | |
| Mono Reissues and the Conical Stylus The warning against playing a stereo record with a mono cartridge stems from the fact that the early mono cartridges didn't have or need any vertical compliance. The lack of vertical movement effectively chews up any vertical modulation found in ... | |
| Mono Reissues and the Conical Stylus I have heard a low hour zero compared to one that had been retipped with a Boron / microridge combo in a direct comparison and I felt that while the retipped cartridge was no longer a Miyajima, the sound was superior. The most surprising thing I ... | |
| Mono Reissues and the Conical Stylus I don' think anyone would disagree that the 1 mil. conical stylus, while optimal for early mono records, wasn't ideal for later stereo records. I agree that the 1 mil conical is not a goof choice for micro-groove but I also do not believe it is th... | |
| Mono Reissues and the Conical Stylus Just measured a bit closer and the groove with is closer to 3 mil. I should also clarify that the 2.2 and 3.2 mil numbers I gave are the "average" from the link below and not a hard spec.https://dgmono.com/2018/04/06/deep-groove-mono-and-the-grea... | |
| Mono Reissues and the Conical Stylus Goofyfoot,the groove width of the London ffrr is about 2.5 mil which is above the max spec for microgroove. Since the groove is v shaped the width has little to do with whether a conical will properly trace it. the only issue that can arise is a... | |
| Mono Reissues and the Conical Stylus That is my understanding. I just looked at a 1955 London ffrr (Ted Heath ant the London Palladium) and the groove is a V. The bottom does have a slight radius. A stereo cutting stylus specified by Ortophon has a 3-4µm radius which would explai... | |
| Mono Reissues and the Conical Stylus I think there is some general confusion about the bridging concept used to sum the stereo signal to add the lateral movement and null the vertical and a cartridge that only picks up information in the lateral plane. My take is that if the coils... | |
| Mono Reissues and the Conical Stylus Can anyone provide a reference to the "U" shaped groove and how it is cut?dave | |
| Mono Reissues and the Conical Stylus How exactly are mono records cut with a stereo cutterhead any different from those cut with a mono cutterhead? The only difference I am aware of is the groove width / depth but the cutting stylus and groove profile is a "V" for both.dave |