SomeGuy15

So if the satellites have an impedence rating of 6 ohms, why is a 3.6ohm load used when testing the amplifier? Also was a purely resistive load used to test the amplifier or complex impedences (ie. speakers). As you know a purely resistive load is much easier to drive than a speaker's complex impedence. And regarding the 1.8 ohm test... isn't this very low. Why is the minimum impedence used for testing instead of the "nominal" impedence? Finally regarding the term "short term continuous". What does this actually mean? Yamaha regards the short term power rating as the PMPO rating. Using simple electronics, if the sub amp was driven at maximum specs (160 watts into 2 ohms), it'll draw almost 9 amps. Can it actually be sustained for more than a couple of milliseconds? Wouldn't the amplifier IC overheat? ... This doesn't even include power to the satellites? How much power can the amplifier supply to the Promedia sub and sats continously for say 30 minutes without extra cooling or a power supply upgrade?

Sorry about the multiple posts. New ISP and its suxs bad. Obviously cheap unlimited accounts=shitty access. Klipsch moderators you might want to consider using flood control. I've seen some BBs which only allows you to post a message 1 minute after you posted your last. This will stop idiots like me posting the same message several times. Back to this thread, Outpatient I'd like to find out where you heard that better cables will noticeably improve sound quality. Like I said, I too originally believed that cables would improve sound (hence the esoteric cables I purchased) but my electrical engineering background and all the data I could gather on cables proved otherwise. Not only that, all controlled blind tests I've seen proves this to be true. I've never seen any proof that "brand-name" cables could change the sound of speakers. Thats why I've always used cheap 16-18 gauge OFC from the local eletronics shop for my speakers. Look at the previous link's Stereo review clip: "...Only that 16-gauge lamp cord and Monster cable are indistinguishable from each other with music and seem to be superior to the 24 gauge wire commonly sold or given away as 'speaker cable." ... and the costs of the 16-gauge cable....30c/foot Gold plated connectors I have no problem with. Gold doesn't rust and is very inert compared to copper and thus ensures a good connection. But you don't have to spend lots of money for interconnects with gold-plated connectors. I use a $4 OFC interconnect with gold plated connectors. Oh yeah... a while ago Stereophile said that Radio Shack cables are good enough and that spending more is really a waste of money. With interconnects look for a good termination where the wires soldered to connector and the RCA jacks fit snug and not loose. Hofy, explain your testing procedures and what differences you heard. This I gotta hear! Oh yeah, again from the above link... "Then we get into the more subjective evaluation. Suppose you're already using adequate size wire and have good connection at the speaker and amplifier. If you're then told the new wire will make an improvement, you will be looking for it and truly believe that you hear an improvement. Some people might go as far as saying "If I spent all that money for these cables, you can be sure I'm going to hear a difference." (rather than admit I wasted my money or have bad hearing)."

K27-R, I'm not doubting that you and your roommate believed that you heard a difference between the 2 cables, but unless the Pros came with utterly crap cables, say 1 tiny strand of aluminium, I highly doubt that any differences exist. If your roommate didn't know you changed the cables over, do you think he'll notice? If Klipsch could have noticably improved the sound of the Pros by spending an extra $1 per set don't you think they would have done so? I doubt that Klipsch is that stupid. Hofy, no offense but don't regurgitate marketing material. I bet you that the people who wrote that crap had no idea what it actaully means. Unless you have a sound knowledge of Maxwell, Gauss and especially transmission line theories, you cannot even hope to explain the variables involved when determining cable quality. What the hell is "interplay"? I've never even seen it in any textbook relating to EM. Uh.. electron migration? Yeah, whatever! I believe this is an issue in high speed VLSI designs but definately not in audio cables. As for RF noise, you find me a bunch of speaker cables which are insulated against RF... you won't (unless you spend WAY TOO MUCH money). The power passed through the cable is so high compared to RF noise that its effect is none existant. And acoustic influences. Its a piece of copper conducting electrons. I'd love to hear an explanation about how audio can effect flowing electrons. Pseudo-physics is always fun to listen to. Again I urge you to take a look at basic electronics/physics textbooks and find out the characteristics of copper and the effects of resistance, capacitance and inductance (you'll require some basic knowledge of complex mathematics too). What you'll find is that the inductance and capacitances of your copper cable is so low that at audio frequencies it will not be affected. Hofy, I bet that if you took a blind test where someone swapped your cable setup with the original Pro cables, you wouldn't be able to hear any differences. Oh yeah, again I emphasize. YOU'RE LISTENING TO CHEAP COMPUTER SPEAKERS WITH CHEAP IC AMPLIFICATION. Unless I see names like Dynaudio Evidence , B&W Nautilus 800, Electrocompaniet or Levinson, don't even think of spending lots of money on cables. I've been fooled by cable companies myself and am only trying to warn others. I've tried thick OFC cables for my MicroWorks, silver/OFC for the 6K setup, some $40 75ohm digital/video cable and even an estoric "Silver-plated high-purity Oxygen-Free-Copper Balanced cable" utilizing Telfon di-electrics etc from the Rotel CD-player to the amp. Every single one... no difference. Luckily I was able to return most of them. Apparently the dealer is used to people returning cables, coming back unsatisfied.

Well OuTpaTienT, I'm guessing you're one of the people using expensive cables? A bit on the defensive side aren't we? I didn't say anything about using thin AM antenna cable. All you need to use is reasonably low resistance copper cable (say 19 gauge) which shouldn't cost more than 50c/foot. Monster cable, along with the majority of "audiophile" cable companies, rips off customers who don't know better. Go ahead and spend $30 on a piece of 50cent piece of copper thread if you want. I bet that YOU wouldn't be able to tell the difference between AM antenna cable and Monster cable. Read the page totalkaos linked to. It clearly shows that the placebo effect in action. And BTW, I enjoy music, but not through cheap computer speakers. My bedroom setup is worth $2700 while the living room setup was bought for over $6000. I KNOW what real hifi is.

Hahaha, an improvement of 8 to 11! I'm telling you guys speaker cables make absolutely minimal difference (if any) to the sound quality. Its the placebo effect... you put in better cables so you expect better sound. But if a blind test was conducted you wouldn't be able to tell the difference. Even 24 gauge cables have a maximum resistance of 0.09ohms/m although its usually smaller. In the worst case scenario, say you have an 10 metre cable, the resistance is the entire length of cable is 0.9 ohms compared to 6-8 ohms of most speakers. Any idiot can plug this into a voltage divider equation and tell you that the power dissipated by the cable is NOTHING compared to the speaker. Plus, how do you explain "better midrange" or "better bass"? Again you can't, its the placebo effect again! The cable impedence characteristics have practically no effect at audio frequencies. Finally do you really expect cheap plastic multimedia speakers to benefit at all by upgrading the cables. Geez a little optimistic aren't we? In other words, if you're paying more than 30cents/foot for speaker cable for your Pros you're wasting your time and money. So I put it to you guys, do you REALLY hear a difference or is it all in your head?