atmasphere
Responses from atmasphere
| The Carver Amp Challenge and the 21st Century and it's Failure One vast, gaping hole in Bob's idea way back then is the output impedance of the two amps involved in the test. If not identical, the one with the lower output impedance will dominate the results. And if its not obvious, another serious issue is s... | |
| Expanding questions about tubes in a preamp Getting rid of microphonic tubes is far more important than damping rings. They have a tiny effect by comparison. I would only use them if you already have decent tubes.Heat in tubes causes failure. The more damping rings and the like, the shorter... | |
| What Class D amps will drive a 2 ohm load You and Ralph are both just in product protection mode, it's so obviousActually, no. Again, I suggest you read the white papers of Bruno Putzeys and perhaps some of his interviews. Quite plainly, you have mistaken impressions about how class D amp... | |
| Really need some help finding a full range speaker I will add a third recommendation to look at the Audiokinesis Swarm subs; with them you will get good bass to 20Hz.The speaker you need to do 60Hz or so and up is then a fairly easy prospect as it does not need to be large! | |
| 2 different Bedini 150/150 Mk II Amps Are filter caps the same as power supply caps? Yes. It took a fair bit if disassembly to replace the larger caps. I suspect that varies from amp to amp though. | |
| Loudness - Why has the industry stopped producing amplifiers with this feature any longer? Yes, dusty, worn POTS and oxidized contacts on switches can be a problem. But that is why we have DeOxit ;-) DeOxit has a dicey reputation in this regard. Its not exactly the best medicine if you are dealing with a part that has the resistive ele... | |
| What Class D amps will drive a 2 ohm load The Mosfet output transistors themselves as well as the output filter, which both have not changed much since it’s inception. The GaN output transistors are maybe going to change that with optional far higher optional switching speed available, ... | |
| How to add depth for classical music What are some good recordings to test depth/layers?The Wand of Youth on EMI. Play the track with the Tame Bears and the Wild Bears.Any Decca or British RCA recording with Kenneth Wilkenson as the recording engineer.Most of the early RCA Living Ste... | |
| What is the order of importance of the parts of an analogue rig? What about SUTs (set up transformers). Should that be a separate category for those with MC cartridges?Not really. Some phono sections have enough gain on their own.I think you will find that the ability of the tone arm to properly track the cartr... | |
| 2 different Bedini 150/150 Mk II Amps We had one of the 150s come through our shop recently- desperately in need of new filter caps. Swapping them out was a bit tricky due to the construction, but once done the amp came right around. It proved to be one of the better amps we've had in... | |
| Educate me about gain and amp/preamp matching I’m actually surprised that the input gain of a preamp doesn’t really effect the output signal gain of the amp. I thought it would be additive or multiplicative (if that’s a word). Can someone explain why that is? Is it that the output signal g... | |
| Itching to upgrade preamp... There are balanced line tube preamps out there.Be advised that most high end audio products don't support the balanced line standard even though they are balanced. If they support the standard, things like ground loops go away and audible cable di... | |
| Classic, Cult, Affordable Class A Solid-State Amplifiers: Bedini, Forte, BEL I'm curious- the Bedini is old enough it clearly needs new filter capacitors in the power supply. Was that done before this shootout? | |
| Educate me about gain and amp/preamp matching Because the Quads are a panel rather than a point source, they are actually more efficient than the specs indicate on account of how that efficiency is measured (at one meter). This is because at one meter a lot of the radiated sound simply isn't ... | |
| Loudness - Why has the industry stopped producing amplifiers with this feature any longer? They proclaim Tone Controls = BAD!! Ummm... but there’s this thing they invented call a SWITCH..... and you and just switch them out of the audio path.... and don’t get me started on "oh but that switch is in the signal path and it degrades th... |