R rotem Audiophyte Apr 21, 2013 4 0 0 Apr 25, 2013 #61 I'm using a jbl spyro probably 8ohms and a PC. I need to extend both the cables to right and left and also the cable from the PC to the sub.
I'm using a jbl spyro probably 8ohms and a PC. I need to extend both the cables to right and left and also the cable from the PC to the sub.
M markw Audioholic Overlord Nov 26, 2003 11,607 0 113 Apr 25, 2013 #62 rotem said: I'm building an experiment with a 20kHz signal and I need the best cable with the least attenuation for around 50m or more. I couldn't find from the spec of some cable what is the attenuation per feet for a cretin frequency. thanks rotem Click to expand... rotem said: I'm using a jbl spyro probably 8ohms and a PC. I need to extend both the cables to right and left and also the cable from the PC to the sub. Click to expand... And you want to extend that 50 meters? Dude, you need more than simple cables if you don't want signal loss at the far end, much less at the high end. Start thinking amplification. Can those speakers even do 20 khz? Last edited: Apr 25, 2013
rotem said: I'm building an experiment with a 20kHz signal and I need the best cable with the least attenuation for around 50m or more. I couldn't find from the spec of some cable what is the attenuation per feet for a cretin frequency. thanks rotem Click to expand... rotem said: I'm using a jbl spyro probably 8ohms and a PC. I need to extend both the cables to right and left and also the cable from the PC to the sub. Click to expand... And you want to extend that 50 meters? Dude, you need more than simple cables if you don't want signal loss at the far end, much less at the high end. Start thinking amplification. Can those speakers even do 20 khz?
R rotem Audiophyte Apr 21, 2013 4 0 0 Apr 28, 2013 #63 They can. and I can handle signal loss as long as I can predict it before.
Speedskater Audioholic General Feb 7, 2013 1,119 0 63 Apr 28, 2013 #64 At a length of 50 meters and a frequency of 20 kHz, cable self-inductance becomes more of an issue than cable resistance. What might work is if you can find a roll of Cat3 or Cat5 cable. You could parallel several cables. Connect all the solid colors to one terminal and the stripes to the other.
At a length of 50 meters and a frequency of 20 kHz, cable self-inductance becomes more of an issue than cable resistance. What might work is if you can find a roll of Cat3 or Cat5 cable. You could parallel several cables. Connect all the solid colors to one terminal and the stripes to the other.
Rickster71 Audioholic Spartan Jan 15, 2006 7,170 0 113 N.J. Apr 28, 2013 #65 rotem said: I'm using a jbl spyro probably 8ohms and a PC. I need to extend both the cables to right and left and also the cable from the PC to the sub. Click to expand... Isn't the volume control on one of the speakers? So you'll have to extend that wire too. How's that going to work, using the control 50m away?
rotem said: I'm using a jbl spyro probably 8ohms and a PC. I need to extend both the cables to right and left and also the cable from the PC to the sub. Click to expand... Isn't the volume control on one of the speakers? So you'll have to extend that wire too. How's that going to work, using the control 50m away?
Speedskater Audioholic General Feb 7, 2013 1,119 0 63 Apr 28, 2013 #66 Wait a minute! The JBL Spyro is a very, very tiny POWERED desk top speaker system. I'm not sure how it works/connected. Are you just going to cut the wires?
Wait a minute! The JBL Spyro is a very, very tiny POWERED desk top speaker system. I'm not sure how it works/connected. Are you just going to cut the wires?
M markw Audioholic Overlord Nov 26, 2003 11,607 0 113 Apr 28, 2013 #67 Well, duh! Speedskater said: Wait a minute! The JBL Spyro is a very, very tiny POWERED desk top speaker system. I'm not sure how it works/connected. Are you just going to cut the wires? Click to expand... You just realized this? As such, it's working off a signal designed to drive headphones, or self-powered computer speakers. IOW, little more than line-level.
Well, duh! Speedskater said: Wait a minute! The JBL Spyro is a very, very tiny POWERED desk top speaker system. I'm not sure how it works/connected. Are you just going to cut the wires? Click to expand... You just realized this? As such, it's working off a signal designed to drive headphones, or self-powered computer speakers. IOW, little more than line-level.
M markw Audioholic Overlord Nov 26, 2003 11,607 0 113 Apr 28, 2013 #68 Are you sure? rotem said: They can. and I can handle signal loss as long as I can predict it before. Click to expand... If these specs are what you're basing your experiment on, I'd rethink your plans. "Real" speaker specs include a decibel variation when they state a frequency range: (i.e: 40 -15 khz +/- 3 db) For all we know, they could be 15 decibels down from 1khz.
Are you sure? rotem said: They can. and I can handle signal loss as long as I can predict it before. Click to expand... If these specs are what you're basing your experiment on, I'd rethink your plans. "Real" speaker specs include a decibel variation when they state a frequency range: (i.e: 40 -15 khz +/- 3 db) For all we know, they could be 15 decibels down from 1khz.
R rotem Audiophyte Apr 21, 2013 4 0 0 May 8, 2013 #69 I'm not basing it on a spec. I've checked it. I'm trying to extend without cutting the speaker wire, with RCA connectors. I was thinking about a regular extender, power cable. with RCA at it's ends and I will check the attenuation. I'm not sure how to extend the volume wire. I'm planing to test it mono to start with.
I'm not basing it on a spec. I've checked it. I'm trying to extend without cutting the speaker wire, with RCA connectors. I was thinking about a regular extender, power cable. with RCA at it's ends and I will check the attenuation. I'm not sure how to extend the volume wire. I'm planing to test it mono to start with.
M markw Audioholic Overlord Nov 26, 2003 11,607 0 113 May 8, 2013 #70 You do realize that you're obsessing over what grit polish to use on a turd, don't you?
Z Zene Audiophyte Sep 5, 2013 5 0 0 Sep 5, 2013 #71 Hi ... does the "Speaker Cable Gauge ... Recommendations" article apply to active tri and quad amped systems as well. Seems as if the power and higher frequencies would figure into the sizes. Thanks, Zene
Hi ... does the "Speaker Cable Gauge ... Recommendations" article apply to active tri and quad amped systems as well. Seems as if the power and higher frequencies would figure into the sizes. Thanks, Zene
Irvrobinson Audioholic Spartan Dec 7, 2004 6,754 0 113 Sep 5, 2013 #72 Zene said: Hi ... does the "Speaker Cable Gauge ... Recommendations" article apply to active tri and quad amped systems as well. Seems as if the power and higher frequencies would figure into the sizes. Thanks, Zene Click to expand... My advice is, don't over-think this. Use 12ga or 10ga for every connection. Ignore marketing nonsense about skin effect or whatever affecting high frequencies.
Zene said: Hi ... does the "Speaker Cable Gauge ... Recommendations" article apply to active tri and quad amped systems as well. Seems as if the power and higher frequencies would figure into the sizes. Thanks, Zene Click to expand... My advice is, don't over-think this. Use 12ga or 10ga for every connection. Ignore marketing nonsense about skin effect or whatever affecting high frequencies.
Z Zene Audiophyte Sep 5, 2013 5 0 0 Sep 6, 2013 #73 irv ... Thanks for your input. but that's as much misconception as a mfg. I'm not about to just grab some cable and fly with it because everyone else does it. Been at the game too long not to delve into what is really going on with the little electron buggers. For a tweeter 12 gauge makes little sense if it's crossed at a point where the impedance is quite high. The lower the cable resistance following is certainly not the answer. No offence to you personally. Zene
irv ... Thanks for your input. but that's as much misconception as a mfg. I'm not about to just grab some cable and fly with it because everyone else does it. Been at the game too long not to delve into what is really going on with the little electron buggers. For a tweeter 12 gauge makes little sense if it's crossed at a point where the impedance is quite high. The lower the cable resistance following is certainly not the answer. No offence to you personally. Zene
Irvrobinson Audioholic Spartan Dec 7, 2004 6,754 0 113 Sep 6, 2013 #74 Zene said: irv ... Thanks for your input. but that's as much misconception as a mfg. I'm not about to just grab some cable and fly with it because everyone else does it. Been at the game too long not to delve into what is really going on with the little electron buggers. For a tweeter 12 gauge makes little sense if it's crossed at a point where the impedance is quite high. The lower the cable resistance following is certainly not the answer. No offence to you personally. Zene Click to expand... Zene, you're lost. Have you read any of the cable articles on this site, under the AV Research tab? They're quite excellent.
Zene said: irv ... Thanks for your input. but that's as much misconception as a mfg. I'm not about to just grab some cable and fly with it because everyone else does it. Been at the game too long not to delve into what is really going on with the little electron buggers. For a tweeter 12 gauge makes little sense if it's crossed at a point where the impedance is quite high. The lower the cable resistance following is certainly not the answer. No offence to you personally. Zene Click to expand... Zene, you're lost. Have you read any of the cable articles on this site, under the AV Research tab? They're quite excellent.
gene Audioholics Master Chief Administrator Jul 1, 2002 10,225 0 120 52 Florida www.audioholics.com Sep 6, 2013 #75 Zene said: irv ... Thanks for your input. but that's as much misconception as a mfg. I'm not about to just grab some cable and fly with it because everyone else does it. Been at the game too long not to delve into what is really going on with the little electron buggers. For a tweeter 12 gauge makes little sense if it's crossed at a point where the impedance is quite high. The lower the cable resistance following is certainly not the answer. No offence to you personally. Zene Click to expand... Cable resistance is the single most important metric with speaker cables at audio frequencies. Everything else is secondary. Reactions: Irvrobinson
Zene said: irv ... Thanks for your input. but that's as much misconception as a mfg. I'm not about to just grab some cable and fly with it because everyone else does it. Been at the game too long not to delve into what is really going on with the little electron buggers. For a tweeter 12 gauge makes little sense if it's crossed at a point where the impedance is quite high. The lower the cable resistance following is certainly not the answer. No offence to you personally. Zene Click to expand... Cable resistance is the single most important metric with speaker cables at audio frequencies. Everything else is secondary.
Z Zene Audiophyte Sep 5, 2013 5 0 0 Sep 6, 2013 #76 Irv ...reading like crazy and finding no scientific evidence other than personal speculation. Not good enough. Gene .. Are you saying the lower the better? If so, I find that hard to believe, also. Thanks guys, Zene
Irv ...reading like crazy and finding no scientific evidence other than personal speculation. Not good enough. Gene .. Are you saying the lower the better? If so, I find that hard to believe, also. Thanks guys, Zene
M markw Audioholic Overlord Nov 26, 2003 11,607 0 113 Sep 6, 2013 #77 Somehow, I think a brief detour to this thread might be appropiate at this time.
Irvrobinson Audioholic Spartan Dec 7, 2004 6,754 0 113 Sep 6, 2013 #78 Zene said: Irv ...reading like crazy and finding no scientific evidence other than personal speculation. Not good enough. Gene .. Are you saying the lower the better? If so, I find that hard to believe, also. Thanks guys, Zene Click to expand... Zene, what the heck are you reading? Did you read any of the articles on this site? Properly designed speaker cables exceeding the minimum AWG for distance and load impedance do not materially affect frequency response or distortion. I don't know what you're reading, but that's not opinion, it's measured fact. You're sounding like a person who either has an agenda, or has already drawn a conclusion without any knowledge. Reactions: gene
Zene said: Irv ...reading like crazy and finding no scientific evidence other than personal speculation. Not good enough. Gene .. Are you saying the lower the better? If so, I find that hard to believe, also. Thanks guys, Zene Click to expand... Zene, what the heck are you reading? Did you read any of the articles on this site? Properly designed speaker cables exceeding the minimum AWG for distance and load impedance do not materially affect frequency response or distortion. I don't know what you're reading, but that's not opinion, it's measured fact. You're sounding like a person who either has an agenda, or has already drawn a conclusion without any knowledge.
J jcl Senior Audioholic Sep 30, 2010 673 0 0 Sep 6, 2013 #79 Roger Russell of McIntosh fame has an informative web page on speaker wire.
gene Audioholics Master Chief Administrator Jul 1, 2002 10,225 0 120 52 Florida www.audioholics.com Sep 6, 2013 #80 Zene said: Irv ...reading like crazy and finding no scientific evidence other than personal speculation. Not good enough. Gene .. Are you saying the lower the better? If so, I find that hard to believe, also. Thanks guys, Zene Click to expand... Yes and the article I wrote about this clearly shows that: Speaker Cable Gauge (AWG) Guidelines & Recommendations | Audioholics High resistance has a much more profound effect on performance than capacitance or inductance for speaker cables, especially when dealing with low impedance speakers.
Zene said: Irv ...reading like crazy and finding no scientific evidence other than personal speculation. Not good enough. Gene .. Are you saying the lower the better? If so, I find that hard to believe, also. Thanks guys, Zene Click to expand... Yes and the article I wrote about this clearly shows that: Speaker Cable Gauge (AWG) Guidelines & Recommendations | Audioholics High resistance has a much more profound effect on performance than capacitance or inductance for speaker cables, especially when dealing with low impedance speakers.
