alrau1
Responses from alrau1
| Help with inverted phase Newbie Question If your preamp inverts phase on all inputs (some invert just phono, some invert just the line stage and some invert both), the easy fix is to swap the speaker leads (instead of red to + and black to -, connect red to - and black to + on BOTH speak... | |
| Amp broken? Geoff, The woofers flapping is due to an infrasonic oscillation, possibly due to a small-signal tube. The first thing you need to do is power up only the power amp . If the woofers flap, try swapping the input/ driver tubes from one channel to the... | |
| Who Was Your Favorite One Hit Wonder How about a 1.5 hit wonder? Remember "The Shoop Shoop Song" by Betty Everett? She also did a version of "Let It Be Me" with Jerry Butler. That makes her the only one-and-a-half hit wonder I know of! | |
| Floating ground: Any danger? Alternatives? It's completely safe, UNTIL YOU DISCONNECT YOUR INTERCONNECTS. The floating component may then kill you, if everything goes wrong a la Murphy's Law.The ideal is for every component to have a ground-lift switch, which keeps the case grounded while ... | |
| Dynaco St70 Static Jayboard, It would be a heck of a coincidence for both bias pots to go flaky at the same time. I don't believe in that kind of coincidence in electronics (which does not make it impossible, just improbable). It is far more likely to be something c... | |
| Dynaco St70 Static Have you done anything to make sure the static is actually originating in the amp? If not, WITH AMP OFF, remove both interconnects and power it up again. If the static's still there, it's the amp; otherwise, look elsewhere. If the amp is at fault,... | |
| Question: Why do people use... As the user of a solid-state preamp and vacuum tube amps, I have a different take on this. Since this is the reference system for my audio company, Virtual Image, I chose this particular solid-state preamp because, other than a slight leanness, it... | |
| Help, is it clipping? or cables? or...feedback. Scotty,Sounds like clipping to me. The giveaway is that the negative feedback helps--this lowers the gain of the amp. I assume you'll note further improvement upon lowering the volume control--if you do, you've been pushing the amp too hard. --Al | |
| Electrical question re dedicated line Peterd,You're on safe ground! :-) I almost mentioned the use of multiple (but connected) ground rods but figured it would just complicate things. I did the same thing--when the cable company stopped using their ground rod, I connected it to the re... | |
| Electrical question re dedicated line Mitchb,A dedicated line is one with no other devices on it. That's what you have, so long as you keep the other 3 outlets vacant. Save your money, or, if you're picky have the other 3 outlets removed and blank plates installed.Peterd,I once dealt ... | |
| Review: Dynaco Mark IV Amplifier Mark IVs are nice, but the specs are NOT as good as cited. Frequency response is +/- .5 dB from 10 Hz to 40 kHz. Power response is from 20 Hz to 20 kHz +/- 1 dB. I bet you found the triode mod made the amps seem louder, even though the power was h... |