almarg
Responses from almarg
| Is a single 20 amp dedicated circuit enough to run mono blocks Thanks for providing the additional info. The speakers have rather low sensitivity (84.5 db/2.83 volts/1 meter) per the SoundStage measurements, but as you indicated their impedance is high (10 ohms or more aside from the upper treble area, where ... | |
| Is a single 20 amp dedicated circuit enough to run mono blocks Chances are you'll be ok doing that, but not necessarily. It depends on the speaker impedance (the higher the better), the speaker sensitivity (the higher the better), and your preferred listening volumes (the lower the better). Each of the two mo... | |
| Tekton Double Impacts Wow! Awesome job, Bill! As is your detailed report on it. Congratulations!Best regards,-- Al | |
| Hum problem Hi Michael,To clarify, on my 70/70 there is a slight mechanical buzz (which I suspect to be transformer-related) for a few seconds just **before** the B+ relay closes, about 20 seconds or so after the amp is turned on. (I assume the relay is closi... | |
| Is DEQX a game changer? Both the HDP5 I own and the Premate+ are described as using low noise switching power supplies, and I suspect that the same supply is used in both. The power supply in the HDP5 is a commercially available sealed unit capable of supplying a maximu... | |
| Hum problem @swampwalker Michael, yes, increasing the amount of feedback lowers the gain of the amp, and therefore a corresponding reduction in the hum level is not surprising. The one possibility of harm if you were to spray contact cleaner on the switch w... | |
| Planar ribbon speaker and Tubes Not working Please help! P.S: In this case the lowest amplifier output impedance would be from the 2 ohm tap, in triode mode.Regards,-- Al | |
| Planar ribbon speaker and Tubes Not working Please help! I already tried various cables, all 3 of the amps Tabs 2,4,8 ohm (PL amps are 2,4,8 ohm in mono and 4,8,16 ohm in stereo) and I tried all of my 3 tubes. Have you tried triode mode? John Atkinson’s measurements of the non-HP version of the amp indi... | |
| Come on people....BASS! Regarding misuse of apostrophes I of course agree, but on occasion I (and perhaps others) have chosen to take a bit of poetic license and do that intentionally, in order to avoid possible confusion as to whether the "s" is part of a tube type desi... | |
| Need feedback on loudspeakers Congratulations in advance, Milpai! I'm sure you'll be very happy with the new speakers. And kudos for the thoroughness of your explorations which led to this choice.Best regards,-- Al | |
| Hum problem One more thing to try, although it may be grasping at straws: With the amp turned off, rotate the feedback control through all of its positions a few times, to wipe off or at least reduce oxidation that may be on its contacts.The condition of the... | |
| Cary SLI-80 with one blown rectifier tube, BUT STILL WORKS just fine. How? Thanks Ralph!Best regards,-- Al | |
| Cary SLI-80 with one blown rectifier tube, BUT STILL WORKS just fine. How? Gs5556 10-29-2017 The heavy red ac wires enter the anodes and the cathodes are connected to pins 4 and 6 and then they’re jumped over to the second tube socket. Re the comment I provided above in response to this statement, I just realized that th... | |
| Cary SLI-80 with one blown rectifier tube, BUT STILL WORKS just fine. How? The heavy red ac wires enter the anodes and the cathodes are connected to pins 4 and 6 and then they’re jumped over to the second tube socket. Thanks, Gs. A minor point, but I think you meant to say pins 2 and 8 for the cathode/filament connection... | |
| Hum problem And is there any way the speaker cables could be causing the hum? Capacitance? Inductance? I have read where some speaker cable designs can cause problems for a power amp. Thanks for your comment, Jim. You may be thinking of the fact that a few sp... |