gs5556
Responses from gs5556
| amplifier longevity Tube amps can last a long time because they are fairly easy to repair. Solid state amps, on the other hand, can have their lifespan limited by parts becoming obsolete. Lot of amps made in the 90's used transistors (very good ones by Toshiba and Mo... | |
| Does reducing gain setting on power amp increase chance of clipping? No. As long as the voltage of the signal (set by the gain) is less than the rail voltage it will not clip. BTW, never set the volume to 100% before sending the signal through. You never know. | |
| Why oscillation occurred within my amplifier circuit? From that schematic, if a small negative voltage is present at the NFB point between Q5 and Q6 the output current will start to run away and a small adjustment to the pot lessening the Vbe resistance will exacerbate it. That capacitor seems to blo... | |
| More expensive = better? You have to compare apples to apples. Price can reflect things such as built-in DAC card, phono section and/or headphone. The casework can add extra cost (engraving, anodizing, finish, CNC artwork, etc.). Also, if it is sold direct it's about hal... | |
| Star Grounding and the Home It's the same thing, a wire to each ground rod or one wire to all ground rods is still a parallel connection to the service panel ground lug. The star connection moves from outside to inside. However you do it, just make sure there is less than 25... | |
| Right Channel dropped out Bryston BP-26P (upgraded from BP-25P) Look into the RCA and XLR connector jacks with a bright flashlight to make sure nothing is stuck in there. To me this sounds like the right channel is shorted to ground. If nothing is in there, then the unit has to go back to the mothership. | |
| Tube Power vs Solid State Power Not true because amplifiers do not put out power to the speakers -- speakers consume power. Amplifier power output is the dissipation of heat. To simplify, if a speaker presents a 4-ohm load to a 12-volt ac signal, the speaker draws 3-amps from th... | |
| A/C power line polarity on new phono preamp I'm pretty sure that switch is for signal polarity, not AC power. | |
| Mono solves all Red and blue fuses mixed will give you purple fuses. No need to spend money on purple. | |
| Mark Levinson 5805 underpowered? You may have to adjust your volume and taper settings in the set up menu. | |
| Why are there no tube televisions anymore? Well done, OP, well done. | |
| Lower voltage caps If the DC voltage across the cap at all times is below 400VDC, then yes. Otherwise no -- the cap will stress out and turn into a wire or an open in the circuit. And maybe burn and create a mess, ruining everything around it. | |
| Why so many tubes? Power from an amplifier is dependent on three things: the gain of the input signal, the voltage at the output, and the power dissipation of the output devices. The more output devices there are (tubes or transistors) means the more power can be di... | |
| How hot is too hot? You have to measure the temp of both heat sinks under the hood with an infrared thermometer. If one is much hotter than the other, then it's a problem. Heat sinks shouldn't vary by more than 5 to 10 Celsius. If both sinks are the same temperature ... | |
| Aged components / service!? I have a CAT SL1 Signature preamp that I have been using every day for the past 28 years. Couple of years ago I measured the caps and all were to spec for micofarads and ESR.So the answer is... it depends. But for the most part, preamps do not gen... |