georgehifi
Responses from georgehifi
| How do I power my 800D(3)s Tubes??? Not the best with this kind of impedance and -phase angle load in the bass kot.The 3ohm!! load between 80hz and 800hz is bad enough.But the 4ohms with -55 degrees of phase angle is an aprox epdr of around 2ohms!! at 70hzhttp://www.stereop... | |
| How do I power my 800D(3)s Symphonic Line Rg4 monoblocksYes these could be nice also, so long as they're not just bridged stereo ones. As they are BJT (bipolar) output devices. Not much independent tests done to see if they can almost double all the way to 2ohms, but they s... | |
| Class D Technology THD numbers, while appearing to be unusually good, may be partly the result of using too much negative feedback. I’ve never heard this amp, but too much negative feedback and you can end up with a soulless amp. You’ve got that right, anyone who’s ... | |
| HDCD rescue - it's possible, but man... I find a more interesting aspect, in that, there are HDCD discs that are not "branded" as such.Maybe the cover/label designer wasn’t told it was hdcd so it wasn't printed??Cheers George | |
| Class D Technology You should do a study to see if class d amp sound quality correlates strongly to switching frequency alone. I have, done numerous bench/listening tests, and tried to come up with my own cascaded output filters like Belcanto I believe did with thei... | |
| HDCD rescue - it's possible, but man... it appears to be a "gold" CD. These always fetch a little more at auction.Yes it is gold. What perplexes me is that both the HDCD version and the non HDCD version came from the same one off recording session. Not that I'm a recording engineer, but... | |
| Power setup for 803D's Family Room titannero, you have a very good speaker in the 803 Diamond, it would be a shame not to partner it with an amp that is probably going to drive it almost as good as it can be, for not too much money relative to what's best for it.Cheers George | |
| Class D Technology Yes, top manufacturers still use linear power supplies, but main reason is demand from people who, mistakenly, believe that if it has to be heavy to be good.Sez who???Cheers George | |
| Class D Technology 3 of the main reasons manufactures choose use smp (switchmode) power supplies.Size/weight, efficiency, and cost to manufacture. Well designed linear power supplies, are still the supply of choice for performance/noise and reliability. But they ar... | |
| Power setup for 803D's Family Room After reading i was also considering doing a Martanz AV8801 for this room with a Sunfire Cinema Grand. Marantz is good, but those B&W 803D's would be far better served with the Parasound Halo A51.Cheers George | |
| Class D Technology They have Ice modules in them minus the power section. The amps have huge analog toroidal power supplies. And massive caps for reserve power.This is a huge step in the right direction getting rid of another point of noise (the smp), with the added... | |
| Power setup for 803D's Family Room @titanneroThis would be good Parsound Halo John Curl design 60amp current, bi-polar output, 250w x 5ch, use whatever your HT receiver as the preamp still.http://www.parasound.com/a51.php Cheers George | |
| Class D Technology I cannot hear 500kHzNobody can hear 500khz, it the filter that has to deal with it and what's left over and the byproducts of it that is the problem.Read the link and carefully try to absorb it. http://epc-co.com/epc/GaNTalk/Post/13752 Cheers George | |
| Class D Technology Is there no need to advance in this direction in raising the switching frequency then?? Too many myself included think it is.Quote from manufacturer of these new transitors, who btw invented the Mosfet power transistor. " Higher PWM switching freq... | |
| Power setup for 803D's Family Room Impedance reaches a minimum of 3.65 ohms at 99 Hz and a phase angle of –56.23 degrees at 50 Hz. Read more at http://www.soundandvision.com/content/bw-803d-speaker-system-ht-labs-measures#M4GiYesABpc1cULl.99With these sort of impedances and -phase ... |