atmasphere
Responses from atmasphere
| What is the “World’s Best Cartridge”? Regarding field coil ps variables @atmasphere has posted in the topic. Maybe he can help us here I doubt it. I'd be very concerned about adding the wires needed to power the field coil. They would have to stiffen up the arm since they would hav... | |
| Added an SUT...not sure I understood this Again: getting to the bottom of the hum thing might be a good idea too. SP-14s are older ARC preamps if memory serves (and a quick search says it was introduced in 1989...) - when was the last time the filter capacitors in it were replaced? If t... | |
| Added an SUT...not sure I understood this @lewm is right and so is @dover . At this point IMO the thing to do would be to get someone to remove those 100 Ohm resistors. SUTs are usually designed to drive 47KOhms (although Jensen makes one designed to drive opamps that expects to see 6.8K). | |
| Tube PHONO preamp interference - RFI, EMI, bad grounding? @filipm OK. That's 99 44/100% the EAR is at fault. What happens when it is not running off of the battery? | |
| Tube PHONO preamp interference - RFI, EMI, bad grounding? I would make sure the EAR is grounded via the power cord. @filipm That it makes more noise with the inputs shorted is telling. Of course you are living in a high RFI zone; that is why everything works fine elsewhere. Could you clarify this com... | |
| Cartridge Loading.....Part II Plus, db are units expressing the ratios of voltages, having nothing to do with current. Anyone? DeciBels refer to voltage, yes. The higher gain settings must invoke downstream gain stages that add to signal voltage output by the indicated db... | |
| Tube PHONO preamp interference - RFI, EMI, bad grounding? @filipm Although I agree with most of what @theaudioamp has suggested, I'm yet to be convinced this is actually the fault of the phono section, even though the phono section is clearly able to amplify the noise. First off the 12AX7s have nothin... | |
| Added an SUT...not sure I understood this @woofhaven1992 Sounds to me as if the SUT is wired backwards. If it were me to verify this I would grab a few adapters and hook it up 'backwards' and see if the gain increases. If it does, I'd send the unit back for repair and if not in warranty... | |
| MoFi controversy In the other side those woofers goes down to 16hz and common sense ( not with technical foundation. ) tells me that it does not play way higher than its crossover design at 450 and as a fact still have a first order filter through the in series i... | |
| MoFi controversy @rauliruegas After what I posted here : do you still think that I must return the caps to the woofers crossover? As @theaudioamp pointed out, some music may sound alright but other music may not; its likely the speakers will be less neutral d... | |
| MoFi controversy Which kind of problems could be to appear in the woofer or amps @rauliruegas Many woofers break up at higher frequencies. The breakups are great in a blues guitar amps but they really aren’t good for hifi. Breakups are portions of the cone th... | |
| MoFi controversy My last move was to take out the caps in the speaker woofers crossover and left only the pure silver ribbon inductor and I will try to do the same with the speaker tweeter silk dome. At the end the best cap is no cap at all. @rauliruegas One im... | |
| Looking for a preamp with XLR connections While balanced and differential circuits are usually superior, it is not universally so. I’ve seen measurements of at least half a dozen products for which the single-ended connections resulted in the same or better performance than the balanced ... | |
| MoFi controversy After Ampex/Quantegy went out of business, I had questions whether I could tolerate the sound of new tape... some of it sounds worse than PCM recording - just my opinion. @moonwatcher Tape does not have much of a 'sound'. Tape technology does. ... | |
| Solid state or Tubes preamp phono stage. @bigmac1963 Here's something to try: Put both preamps side by side. Do not use any loading on the cartridge other than the stock 47KOhms. Use the same LP and listen to both. Does one of them seem to play more surface noise than the other or soun... |