spatialking
Responses from spatialking
| Who makes your favorite vintage phono sections??? # 1 choice for me is my own design. # 2 choice is my old Spatial preamp. # 3 choice is my CJ preamp. | |
| What do you see as the downside of tubes? I have both types of amps in my living room. I find the biggest problem with my CJs are the fact that I can't leave them on 24/7 playing music like I do my solid state system. Heat is another matter. In the winter time, there is enough heat that t... | |
| So what do you think of Class D amp for subwoofers Muralman1: An interesting mantra that you have. Consider this along that line of thought: "If our understanding of Class D is deficient, which is in deed a valid argument, then also too are the designers whose understanding is also deficient, whic... | |
| So what do you think of Class D amp for subwoofers Kijanki, I sure don't know where you get your ideas on distortion but Class D amplifiers are not immune to any of the distortions that also affect Class AB or Class A. Unfortunately, using a Class D approach does not design any of them out. Shortc... | |
| Dahlquist LP-1 Passive/Active crossover Also, I found the original owners manual which I scanned into pdf format and I also have a schematic for an upgrade to it which I have been using for some years now. If anyone wants them they are welcome to them. Just shoot me an email. | |
| EMF/RFI isolation with aluminum sheet metal The FCC does limit what can be emitted from a Class D amp, along with everything else. But not every unit is tested, only one unit unless it is a new model or a significant change was implemented. Aluminum will do wonders for electrostatic noise i... | |
| isolation transformers hum Hum in a transformer is caused by eddy currents developing in the iron plates inside the unit. Other than being annoying, they don't cause a safety issue of any kind. However, that energy is part of what keeps a transformer from approaching 100% e... | |
| So what do you think of Class D amp for subwoofers Kijanki: I did go to the Icepower site and I downloaded his thesis. I skimmed through it yesterday and today at lunch and I focused on some of his major points. There is a lot there and he is certainly the first to put phased pulse code modulation... | |
| Tube amps that kick ass? Try looking for a used CJ Premier series amps. They run in your price range and are very good. I certainly am happy with mine. | |
| So what do you think of Class D amp for subwoofers Kijanki: Actually, a Class D amplifier uses a digital technique to reproduce the sound. The amp is actually a Pulse Width Modulator with a power output. Envision a one bit DAC reproducing the sound and you have an idea of what is going on in a Cla... | |
| So what do you think of Class D amp for subwoofers Kijanki, I don't believe any SMPS is quieter than a linear regulated supply regardless of what the diodes are doing in a linear PS. Sure you can design SMPS to switch on and off at zero crossings but you still have to deal with clock noise. If a S... | |
| So what do you think of Class D amp for subwoofers Kijanki, I forgot to mention that I agree with your statement that Class AB is not expensive to operate, I disagree with your statement that distortion mechanisms is the reason for Class D in audio today.The reason Class D is in audio today is the... | |
| So what do you think of Class D amp for subwoofers Kijanki: What you wrote is not exactly correct nor complete. The conduction current spikes you mention do exist in the manner you describe, however your analysis is not complete. First, the conduction spikes caused by diode action you describe are... | |
| So what do you think of Class D amp for subwoofers First, let me state I "fixed" the radiated noise from the Class D amplifier interfering with the FM radio. I bought a new antenna and positioned it 20 feet away from the Class D amplifier. Now, there is no audible noise in the FM. I also found tha... | |
| So what do you think of Class D amp for subwoofers However, when not listening to the FM radio, the amp sounds perfectly wonderful! I had some classical music on last night - piano, horns, and violins - and the sound was truly amazing! |