gs5556
Responses from gs5556
| Toroidal transformer on tube amp Torroids are smaller and lighter, which is the main reason they’re used is SS gear. Using a torroid as a mains transformer on a tube amp is okay, but it has a wider footprint, so it’s a matter of allocating real estate that usually takes priority ... | |
| Burn in after repair? What amplifier is it? How old is it? How long have you had it? What were the symptoms that something was wrong? Who did the repair? Is the amp connected to the same electronics and speakers then and now? | |
| PCM1704 Can we assume you checked the electrolytic caps around the DAC voltage reference pins are not damaged or shorted and the +/- 5V Vdd reference voltages are correct? | |
| 43 dB noise level from speaker with amps (not including pre-amp) Decibels are logarithmic, not linear. If the noise floor is 45 dB and you add another 45 dB from your speakers, the combined dB is 48. If you double the noise and add 90 dB to the ambient, the combined level is 90.00014. The numbers to the right o... | |
| unison simply four no sound Is there a time delay circuit that turns on the high voltage after the heater voltage? Something there could have gone bad such as a charging capacitor used as a timer. | |
| Fuse Direction for Pass Labs Amp and Preamp One of the things about this hobby is you can extrapolate things to the ridiculous. Fuse direction is one of them. How do you know that by switching the fuse it is the metallurgy of the fuse with respect to the AC source that makes it sound differ... | |
| Installing dedicated 10 gauge lines Calling an electrician is the best advice. They will assess what can and can't be done within your budget. Also, it's not written in stone you have to go behind the walls. Surface mounted conduits such as WireMold can bring power to almost anywhe... | |
| Life of KT 150 Tubes If this is the first and only set of tubes you had, my first instinct would be a faulty production batch from the factory. I wouldn't suspect the amplifiers unless the problem happened with one amp. Moreover, a bias current of 55 to 60mA means the... | |
| Does Anyone Buy Schiit for the Sake of Schiit? What makes you think that Schiit's workmanship and material is of inferior quality? If their products came in milled aluminum cases with fancy engraving and sold through a dealer network, their prices would easily triple. "Good For the Money" is a... | |
| Current Questions It's easier to think about it in terms of energy storage than volts and current. The more energy an amplifier stores, the more current can be drawn from it. It is similar in concept to an electrical outlet for a speaker to "plug into". An electri... | |
| Tube amp question If you use the KT150, I would bias it to 80ma. Based on the amp power specs for the EL34 and 6550, the bias settings of the tubes and 500V at the plate, the amp operates in Class A/B and the output transformer is about 6500 ohms in Ultralinear. Th... | |
| Will skinny-leg diode restrict amperage compared to fat-leg bridge rectifier? The 'fat legs' are for mechanical connections to the rectifier, either quick connects or soldering, and do not reflect current carrying capacity. If the diameter of the Cree assembly leads is 1mm or more they will easily carry up to 35 amps. Diode... | |
| How to tell the current from the amp As eric said, the rating into different impedances tells you more about the amp’s capability, and you should couple that to your room size and speaker requirements for selecting a power rating. Keep in mind amplifiers do not put out power, the sp... | |
| Focal Kanta No. 2 Speakers hum with speaker with speaker cable disconnected Moved speaker, same problem... shorted the outputs, problem gone. Other speaker is (and has been) quiet. Time to give Focal a call. Looking at their literature, they developed what they call a 'Neutral inductance Circuit" which does balancing act... | |
| Focal Kanta No. 2 Speakers hum with speaker with speaker cable disconnected Swap the speaker positions (place the right speaker in the exact same spot to the half inch). Does the right speaker now hum and the left stay quiet? If so, then there is something inductively coupled to the speaker. Is there a basement underneath... |