georgehifi
Responses from georgehifi
| An interesting experiment If you use a passive volume control that is 30kohm it's approx highest (worst) output impedance is about 20kohm. This 20kohm combind with high (poor quality) cable capacitance of 100pF per foot, 300pf total for 1mt will give you a HF roll off of -... | |
| An interesting experiment "not a good match by traditional thinking"It's more than just traditional thinking, it's "Ohms Law", every stage of amplification design is based on on it and Kirchhoff's Law, without them you'd have a mess. And yes if it sounds good to him he may... | |
| An interesting experiment Oferi your Ice Power amp/s with 10kohm input impedance is not a good match for any passive pre or even some tube preamps. However your CJ MV60SE is 100kohms input impedance and this is a great match for a 10kohm passive preamp.Cheers George | |
| An interesting experiment Oferi hi, did you try just a 10kohm passive pot in place of any active pre, or your source/s direct to the poweramp if it/they have volume control facility? And what are the output impedances of your sources and the input impedance of your power a... | |
| impedance matching and interconnect capacitance With the output impedance of your ARC SP-16 at 260ohm and your capacitance of the cable at 661pf will make a HF filter at -3db at 926khz, no problem at all. And the spec for 1000pf max load capacitance of your ARC is the max it can take for it may... | |
| Lightspeed Attenuator - Best Preamp Ever? Yes, Photonman it's only when the cheaper cables get over 100pf per ft and a meter (3ft) or more long things can start to happen. eg: a bad quality high capacitance cable of say 100pf per ft and 1mt long would be -3db at 76khz which still fine but... | |
| Lightspeed Attenuator - Best Preamp Ever? I just saw in your previous posts that the capacitance you have is so small on both cables it does not even factor in which goes after the Lightspeed. As the Blue Jeans at 2ft you have at 13pf per foot will be -3db at 874khz!!! And the Bryston cab... | |
| Lightspeed Attenuator - Best Preamp Ever? I would put the lower one from the Lightspeed to the amp. Saying that what were the pF measurement for what lenghts of the both cables you have? And then I can then give you a -3db HF roll off point in khz.Cheers George | |
| Lightspeed Attenuator - Best Preamp Ever? Hi Devilboy, glad your enjoying the Lightspeed with your setup. There is no problem with the 51k Z of your amp. As we have done extensive A/B listenings tests on a very high rez system with amp input z loads from 300k right down to 33k, and only t... | |
| Preamp Noise with High-Efficiency Speakers I also know where your coming from, and I'm only condescending to those who deserve it. We’ll just agree to disagree. Cheers George | |
| Preamp Noise with High-Efficiency Speakers Yingtonggao's problem was too much system gain with his 104db speakers. As the low gain Cary poweramps seems to have now fixed. The cheapest way I suggested in one of my first posts a removal of gain by either going direct or the use of a passive,... | |
| Preamp Noise with High-Efficiency Speakers "being more ripe, full-bodied, and solid. I've bought and sold hundreds on audiogon."All preamps sound different,Yingtonggao this is why you've bought hundreds?? they do not all sound like straight wire with gain (uncoloured) otherwise they would ... | |
| Preamp Noise with High-Efficiency Speakers He hasn't said he's tried this new amp (Cary) direct yet.Cheers George | |
| Preamp Noise with High-Efficiency Speakers He has it all there, and won't cost him a cent to try it. He may even be in for a bigger/better surprise. After all it will be the most transparent/dynamic way of being true to the sound of the source there is going direct, as it is also a prefect... | |
| Preamp Noise with High-Efficiency Speakers Yingtonggao looks like high system gain may have be your problem with the other setup. This is what Stereophile said about the measurements on the Carys, looks like they have very low gain. Which is what's needed for a very efficent horn system. "... |