Members poomwah Posted January 24, 2009 Members Share Posted January 24, 2009 in this VERY quick and crude diagram, what would be the total resistance? 5.33 ohms? what would the total power handling be? Link to comment Share on other sites More sharing options...
Members PaulyWally Posted January 24, 2009 Members Share Posted January 24, 2009 I don't see any diagrams. Certainly not a "crude" one. Oh yeah... keep in mind that speaker "impedance" is not exactly "resistance". Not trying to be a stickler. Just trying to be acccurate. Link to comment Share on other sites More sharing options...
Members Renfield Posted January 24, 2009 Members Share Posted January 24, 2009 in this VERY quick and crude diagram, what would be the total resistance? 5.33 ohms? what would the total power handling be? First you need a diagram. Second you need to tell us what the speakers are. For total power handling, just add it all up straight, no funny math needed. Link to comment Share on other sites More sharing options...
Members poomwah Posted January 24, 2009 Author Members Share Posted January 24, 2009 lets try this again I know adding it up is simple, but what if you have a mix of series and parallel wiring ? doesn't that change the total? Link to comment Share on other sites More sharing options...
Members PaulyWally Posted January 24, 2009 Members Share Posted January 24, 2009 5.33 is what I'm seeing. Link to comment Share on other sites More sharing options...
Members poomwah Posted January 24, 2009 Author Members Share Posted January 24, 2009 ok, got that right... am I also right in thinking the max I could push through it is 200 watts? even though there are six of them... the top two being in series would be the "weak link" I think Link to comment Share on other sites More sharing options...
Members AluminumNeck Posted January 24, 2009 Members Share Posted January 24, 2009 600 watts Link to comment Share on other sites More sharing options...
Members mrcrow Posted January 24, 2009 Members Share Posted January 24, 2009 16/3 Link to comment Share on other sites More sharing options...
Members misterhinkydink Posted January 24, 2009 Members Share Posted January 24, 2009 600 watts Winner Link to comment Share on other sites More sharing options...
Members mrcrow Posted January 24, 2009 Members Share Posted January 24, 2009 32/3 ohms 1200 watts ? Link to comment Share on other sites More sharing options...
Members AluminumNeck Posted January 24, 2009 Members Share Posted January 24, 2009 Depends on how the speaker load given that diagram. I twould personally hesistant to push more the 400 watts with a distrobution scheme like that. Some loads are 4 some are 8 some or 2 and it is averaging out to 5.33. Hard to say what the true rating will be and the cabinet loading will have a big impact on what they not only produce for SPL but can handle for power. Link to comment Share on other sites More sharing options...
Members mrcrow Posted January 24, 2009 Members Share Posted January 24, 2009 thats 2 8 ohms in series =16running parallel to4 8 ohms in series =32 2/32 + 1/32 =3/32 reciprocal 32/3 ?? Link to comment Share on other sites More sharing options...
Moderators Kindness Posted January 24, 2009 Moderators Share Posted January 24, 2009 The thermal limit is next to irrelevant, the mechanical displacement limit is critical. You need a great deal more information to know anything about that cabinet's mechanical limits. Link to comment Share on other sites More sharing options...
CMS Author Craig Vecchione Posted January 24, 2009 CMS Author Share Posted January 24, 2009 lets try this again I know adding it up is simple, but what if you have a mix of series and parallel wiring ? doesn't that change the total? Is there a reason for this mess? Link to comment Share on other sites More sharing options...
Members L. Ron Hoover Posted January 24, 2009 Members Share Posted January 24, 2009 The impedance is 5.33 Ohms and the total power handling is 1200W, making the assumption that each driver can actually handle 200W at any given frequency. That's not a good assumption. The total power handling is equal to the sum of what each driver can handle. The math backs it up. In this case, 1200W is 80V and 15A. By Ohm's law each driver will drop 40V and have 5A running through it given 80V at the input. Basic circuit analysis. And what Kindness said. Link to comment Share on other sites More sharing options...
Members PaulyWally Posted January 24, 2009 Members Share Posted January 24, 2009 thats 2 8 ohms in series =16running parallel to4 8 ohms in series =322/32 + 1/32 =3/32reciprocal 32/3 ?? Close... there are only 2 series connections in there.Here's the grouping: two 8 ohms in series (16 ohms)[running parallel to]two 8 ohms in parallel (4 ohms)[running in series with]two 8 ohms in parallel (4 ohms) Break it down further: two 8 ohms in series (16 ohms)[running parallel to]two 4 ohms groups in series (8 ohms) The math: 1/Total Impedence = 1/16 + 1/8 = 5.33 Or: Total Impedence = 1/(1/16 + 1/8) = 5.33 Link to comment Share on other sites More sharing options...
Members AluminumNeck Posted January 24, 2009 Members Share Posted January 24, 2009 Well wattage is a rating of heating power it does not really express how a speakr will tak a given amplitude and Fq at a given output. Link to comment Share on other sites More sharing options...
Moderators Kindness Posted January 24, 2009 Moderators Share Posted January 24, 2009 Well wattage is a rating of heating power it does not really express how a speakr will tak a given amplitude and Fq at a given output. Not really. It is both. Link to comment Share on other sites More sharing options...
Members AluminumNeck Posted January 24, 2009 Members Share Posted January 24, 2009 well the voice coil power rating is a heating rating. The mechanical power rating is something entirely different. Speaker loading will affect both. Link to comment Share on other sites More sharing options...
Members PaulyWally Posted January 24, 2009 Members Share Posted January 24, 2009 well the voice coil power rating is a heating rating. The mechanical power rating is something entirely different. Speaker loading will affect both. You are correct to some degree. Yes, there is an explicit heat dissipation at DC resistance. But in a speaker system (or in any A/C system for that matter), you can't differentiate heat dissipation vs. mechanical power usage. They are very much related and fluctuate against each other as frequency changes. Impedance and Q curves need to be plotted out to get an accurate idea of how the speaker system will react to x watts at y frequency. The only way you can make it simpler, is by doing what most people do... comparing the wattage output of the amplifier to the wattage rating of the speaker. Link to comment Share on other sites More sharing options...
Members poomwah Posted January 24, 2009 Author Members Share Posted January 24, 2009 the mess was an attempt to get a 610 using all 8 ohm speakers with an impedence over 4 ohms Link to comment Share on other sites More sharing options...
Members PaulyWally Posted January 24, 2009 Members Share Posted January 24, 2009 the mess was an attempt to get a 610 using all 8 ohm speakers with an impedence over 4 ohms Why "over" 4 ohms? What is the exact purpose and reasoning? Maybe there's a different way to accomplish what you're after? Link to comment Share on other sites More sharing options...
Members Renfield Posted January 24, 2009 Members Share Posted January 24, 2009 Why "over" 4 ohms? What is the exact purpose and reasoning? Maybe there's a different way to accomplish what you're after? His amp can only handle down to 4? Link to comment Share on other sites More sharing options...
Members poomwah Posted January 24, 2009 Author Members Share Posted January 24, 2009 renfields right as usual :]I might have a solution though, I have a chance to trade my 810 for an avatar 115 and 210 (8 ohm)... then I can just put the 8 ohm 210 on top of my 8 ohm 410 and have 4 ohms :]I just don't know if his 115 is a delta or kappa (it doesnt say on the cabinet what the power handling is) Link to comment Share on other sites More sharing options...
Members PaulyWally Posted January 24, 2009 Members Share Posted January 24, 2009 His amp can only handle down to 4? Gotcha! For a second there, I was thinking there was a reason he didn't want to go down to 4 ohms... regardless that he simply can't with six 8 ohm speakers. Link to comment Share on other sites More sharing options...
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