woofhaven1992
Responses from woofhaven1992
| Audio Research - should I replace the valves? Probably a bit of a production from the UK, but when it is tube replacement time on my ARC amp, I ship it to them. They will give the whole thing a once over, test the tubes, and replace as necessary. They are great to work with and don't keep it... | |
| Added an SUT...not sure I understood this @dover Feel free to dunk, it's apparently important to you. Yes, you are right that I initially indicated the incorrect sub-species of the OC9. You remain incorrect, however, about the correct loading with the SP14, which contains neither a head-... | |
| Added an SUT...not sure I understood this @intactaudio I misunderstood the intention behind your post then. Unfortunately, the question you have asked has a rather uninteresting answer. Everyone on this thread has been assuming I determined that the best sounding load for my cart was a l... | |
| Added an SUT...not sure I understood this from the cartridge POV, how can 3Ω be different than 3Ω? I am speaking primarily about the effects of the load on the electromechanical behavior of the cartridge and what impact that may have on the sound. You are correct in your conclusion, b... | |
| Added an SUT...not sure I understood this Yes, JCarr sort of contradicts himself a bit and ends up being half right. The reason a cartridge sounds different under a heavy load is because the low load impedance suppresses output voltage. But a preamp that is uninterested in output voltage... | |
| Added an SUT...not sure I understood this @dover The sheet that came with my cart says 20 ohms. AT has not been consistent with their specs on the OC9 series. More importantly, it sounds better around 20 ohms than at 100. Plenty of people agree with me on this. I'm not going to load it... | |
| Added an SUT...not sure I understood this Well this has been interesting, and now the mystery is solved. The prize goes to @mulveling for correctly deducing that when ARC last serviced the SP-14, they soldered 100-ohm load resistors in there. They did know I was using an MC cartridge, b... | |
| Added an SUT...not sure I understood this @intactaudio Connecting to the 40 ohm tap results in less gain that connecting the cartridge directly to the MM input. On the front panel of the SUT, there is a selector to bypass the transformer, to use the 40-ohm tap, or to use the 3-ohm tap, a... | |
| Added an SUT...not sure I understood this @rauliruegas Yes I have been using the SP14 with no SUT for some time, and the sound is great except for a touch of hum just at the level of the noise floor. I decided to fiddle with this SUT as a way of addressing that problem, which otherwise ha... | |
| Added an SUT...not sure I understood this @mulveling Thanks. Clearly there is something wrong with this SUT. There's no possibility of wiring it backwards since it has a built-in output cable and two sets of RCA jacks for inputs. You are right about the gain on my line stage. When pla... | |
| Added an SUT...not sure I understood this Well, as I said, I removed the load resistor when I installed the SUT. Thus, the SUT is driving my preamp's 47k ohm input impedance without modification. The pre-amp was just serviced and spec'd out by ARC, so I know there's no chance its impeda... | |
| Added an SUT...not sure I understood this @dweller the SP14 has a built-in phono stage. | |
| Added an SUT...not sure I understood this @noromance the SP14 does not have an MC setting. The expectation was that one would either just crank up the gain or use SUT or headamp. @jasonbourne52 I wish I had someone else in my orbit with an SUT to borrow, but my audio clan is very anti-v... | |
| Shouldn't This Sound Boomy? When I look at that graph, boomy does not come to mind but I wonder if over time you will start to feel like the sound lacks life or sounds a bit muffled. It looks like there is a big difference between the bass decay and the mid/high decay even t... | |
| Phono Stage Amp Could the issue be an ultrasonic peak of the Mc cartridge causing clipping at higher volumes? Think about cartridge loading. MC carts typically have increasing output as frequency increases, well into the ultrasonic range. Load resistors tamp this... |