atmasphere
Responses from atmasphere
| Are Pre-Amps necessary? And to all, active preamps have volume controls as well, and most times not as good quality as the better passives pre's usually use. Also active pre's use many other distorting/colouring components in them. At least passive pre's usually only ... | |
| Amplifiers in use with big Harbeths (Mon 40 series) that work very well responds well to tube beauty but with the big woofers you will certainly give up something on the low end in the trade@jjss49 Just so you know, this statement is false. The size of the woofer has ***nothing*** whatsoever to do with how a tube amp ... | |
| The smoothest amp you've heard? Exactly how or why they would introduce phase shift down to 1/10th the cutoff frequency isn't revealed or explained.In any case, why just those frequencies? What about 20kHz cutoff frequency causing a 2kHz phase shift?A 20Hz cutoff will induce pha... | |
| Anyone try using a 5751 in place of a 12AT7? For starters, a 12BH7 might sub a 12AU7 pretty well, if the circuit can support the additional filament current, but its not a sub at all for a 12AT7!The difference in mu is significant with any tube. The circuit has to be optimized to take advant... | |
| I'm a Dummy, Tell Me About Turntable Mats I pay no attention to it, because my listening seat is far enough away from the turntable that I never hear it while I am trying to concentrate on what is coming out of the speakers. What’s the big deal?Anyway, I view it as a "problem" endemic to ... | |
| What are ways to fix speaker dips in my speaker or audio room I have recently hired an acoustic engineer and after a day of measuring room acoustics and he came back with what I needed to fix and one of my speakers dip at 54 HZ and would DSP help or a lot of bass traps in the frequency work better?@shawar... | |
| Are Pre-Amps necessary? It makes sense no pre would be most transparent, resolving, the straight wire concept. Go back earlier in this thread to see what a straight wire isn't always the most neutral. The problem is that a passive volume control isn't a bit of wire. If i... | |
| Tube question: any sonic difference in 6SN7 vs 6H30 vs 6H80 in the amp's signal position? The 6C33 was used for the power supply for the Mig's radio system and was remarkable for its power handling capabilities. The first audio amp using this tube was built by a Mr. Dakasue in 1977. The first American design to use this tube was the... | |
| How long can a electrolytic capacitor last un-used? If she is quiet with no buzzing or humming that is good. @grannyring It may well be running with half of its rated capacity though- and at risk of imminent failure. A cap that is 20 years old is at its 'half life' which is my way of saying that a... | |
| Tonearm adjustments on the fly @atmasphere, The Schroder CB's bearings are ceramic, even harder. It is reported to have the lowest friction of any captured bearing arm made. Whether that is true or not I can't say but it is a very sensitive arm and it will move with just the... | |
| Subwoofers going into standby with low volume listening (New Integrated Amplifier). Should I ditch the Y splitter (not use the line inputs) and just run the single RCA to each sub's LFE port, setting the crossover to "LFE" on the subs?Yes. The splitter isn't helping. But since there isn't enough output, I'd consider using the s... | |
| The smoothest amp you've heard? many tube amps are closed in on top, not airy. so they may be butter smooth, but it’s a circuit artifact overlayed over all the music, and not ’the’ music. @mikelavigne The quality of smoothness is a lack of higher ordered harmonics; also a lack... | |
| Firing up old tube amps. Should I worry? Best advice is to inspect them for bulges or leaks, then use a variac to raise the voltage slowly and give the capacitors time to re-form.They won't have bulges if they've been sitting.The traditional means for reforming/testing the filter caps i... | |
| Are Pre-Amps necessary? but look how much longer that has taken than anyone thought.About 40 years so far and still counting... And now tape is back after a long hiatus. And we're already to the point where the industry doesn't want to make CDs anymore. For digital, stre... | |
| Subwoofers going into standby with low volume listening (New Integrated Amplifier). But dually concerning is that even when I crank up the volume on the subwoofer, they sound extremely tame and subdued.It sounds like the volume controls on the subs are set too low. This will help them sound less subdued and also stay on more.BTW ... |