I didn't think XK-R100's are being made anymore. That being said, they're nice units. I have one in my car and I like it. =-=Andrew Andrew Ohnstad, Operations Manager, ALM AudioWorks aco@almworks.com http://www.almworks.com Personal Home Page (Info on my car!) http://andysaudio.base.org ----- high-ish voltage output (so gain controls on external amps can be turned down which will reduce noise and improve soundstaging) --- Todd Marcucci: >Voltage on decks???? Mon, 05 May 1997 07:41 I didn't realize higher-end units had higher voltage outputs but the answer is simple (you were right): Noise. The higher your output (assuming your signal is clen in the deck) the higher your signal to noise ratio over your signal path will be. Noise stays constant but the signal is greater in effect reducing the noise in comparison to the signal. It will also make things louder unless you decrease the gain to compensate. Todd Marcucci marcucci@tamu.edu enzo@idirect.com (Adrian Henderson) wrote: >What does the differnec involtage on high end units do for them? Vs. >one with lower output voltage? Someone was telling me it has to do >with reducing (eliminating) the engine noise? ----------------- Erik Robsarve: >Voltage on decks???? Mon, 05 May 1997 10:57 Adrian Henderson wrote: > > What does the differnec involtage on high end units do for them? Vs. > one with lower output voltage? Someone was telling me it has to do > with reducing (eliminating) the engine noise? He was right. By increasing the output voltage from 2 to 4 V you have effectivly halved the inducted noise into your rca's, in many cases the input stage in your amp can be quite noisy (hzzzz) and a higher output voltage then enables you to turn the gain down. -- Erik R, SASCA competitor, SWEDEN >|=========================< E >===========================| >| My homepage: http://hem.passagen.se/gute | >| My e-mail : erik.robsarve@era.ericsson.se | >|----------------- ------------------ From: m1brennan@aol.com (M1 Brennan) M1 Brennan: >Voltage on decks???? 5 May 1997 12:55 enzo@idirect.com (Adrian Henderson) Asks: What does the differnec in voltage on high end units do for them? Vs. one with lower output voltage? Someone was telling me it has to do with reducing (eliminating) the engine noise? You are on the right track, increasing voltage can decrease noise. It is more difficult to induce noise into a higher voltage line, so you are less likely to pick up noise on the way to the amplifiers as well. A much overlooked advantage to higher voltage output is also increased resolution. Take for instance your system that puts out 2V max. Your highest output is 2V, half output is 1V, no output is 0V. If you double that voltage, your highest output is now 4V, the middle 2V and the bottom still 0V. Now you have twice as much voltage to work with when creating your signal. More distant or delicate sounds have a greater chance of being heard. Also, in regard to turning down your amplifier gains, this is becuase your amplifiers now need to do less work. If your output rail voltage is 24V, and your input voltage is 2V, the signal has to be amplified 12 times to get to the output voltage. However, if your input voltage is 4V, you only have to make the singal 6 times greater than it originally was. -Michael Brennan Killer car stereo! See where I listen! http://www.omac.com/weblink/~worldofmb/html/index.htm IASCA Zone 5 Competitor Liasion Committee Web Page: http://www.omac.com/weblink/~worldofmb/html/zone5.htm m1brennan@aol.com (M1 Brennan) ---------
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