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I do know that alot of countries that use 220-240 etc, the power is balanced power, 120 volts on the hot line and 120 volts for the net line, for 240 volts. In countries with 120 volts, the power is not balanced, it has 120 volts on the hot only. Some people, myself included use use Balanced power cond. or transformer and transforms 120 volts to Balanced power with 60 volts on hot and 60 volts on net. Alot of components will sound better on balanced power.This is the reason why countries with 220-240 volts may have a bit of a free upgrade as alot of Countries that employ 220-240, it will be balanced power!
Hi,In my country the 220V are two hot phases(118V + 118V) that by some trick I do not understand yet it give 220V(there is some loss of 16V).My SCD-1 is a USA model 120V, then I custom order a 2,5kg Toroidal transformer to decrease 220V to 120V, a mistake no good sound result, so I ordered a big one 6kg Toroidal, again bad sound.I ended to outstrap a wall outlet in my room with no cost to 120V(just one hot phase of 120-127V) and finally get refined sound from redbookCDs discs in the SCD-1.The Euro zone and Oceania audiophiles surely have a advantage with the 230V mains line, even being just one 230V Hot phase may be better than a 120V.Regards, Gustavo
Yes, but still alot depends upon the design. I have seen preamplifier designs that are minimal to say the least.Cheers.
Not to be rude, but this just isn't the case. Plenum rating refers -only- to the composition of the jacket of the cable. The idea is that a cable rated to be run in a plenum (e.g. HVAC vents, for example) won't start producing toxic gases until a somewhat higher temperature than a standard (i.e. non plenum rated) jacket. Stranded and solid core wiring appears with plenum or non-plenum rated cabling. Also - the assumptions you're making about the prevalence / use of stranded vs solid-core aren't really consistent either. Stranded cabling is seen most often when purchasing pre-made patch cables. Most bulk cable (e.g. 1000' rolls used for structured wiring) is solid core. Solid core cabling has somewhat better electrical properties for long runs but is also somewhat less flexible. Stranded cabling, in contrast, is both more flexible and longer-lasting in environments where the cable is typically kinked up, repeatedly coiled/uncoiled, etc (i.e. under one's desk, in one's bag, etc).The various CAT-X cables are specifications which dictate, among other things, the numbers of twists per inch as well as other minimum electrical and physical characteristics of the cable itself. It also specifies the particulars of termination. I won't comment on the correlation between the rating of a cable and applicability in analog audio applications but would tend to agree with you that for most purposes the distinction between, say, cat5 and cat6 probably don't amount to much in this sort of context. The big electrical wins tend to come for equipment that are using common mode noise suppression (i.e. Ethernet switches / NIC's), which isn't really the case for situations where all of the cables ended up twisted together to provide a single conductor (..or a pair of conductors, for that matter).
Yes I know Plenum is commonly used in offices and around florescent light balusters, AC and heating ducts and such. It’s also fire code mandatory in some places. However, all that has nothing to do much with Audio. In my experience, all plenum cat5 ive purchased was solid core, yeah ok maybe someone makes stranded wire cate5 plenum but ive not come across any. In places like HomeDepot, the spools of cat5 plenum they sell by the foot are solid core which is all that’s important here. Ive NOT bought any cat cable in a few years, haven’t had the need too so if things have changed… For audio usage, solid core has been superior to stranded cat wire for me and for most I believe or so ive observed. And yeah, dielectric is important too. It’s a matter of taste. Ive made dozens and dozens of speaker cables from all sorts of wire, I prefer a lite dielectric usually. With cat wire, you remove the outer jacket and discard. Each solid care wire has a very thin dielectric coating. Braiding helps to deduce noise.
