The Video:
My Conundrum:
I thought when you lower the resistance, you increase the power output of transistor based amps.
Reference:
Perry Babins 12volt.com site calculators
Dave Rats Findings/ Reasoning from what I understand:
"-You get more output power/ Watts (He did use the term efficiency as well) at 16 ohms vs 10 ohms (speaker) loads".
This might make sense to me if this was a Tube amplifier with a Transformer for its output (as he did mention 70v commercial audio system) as such I understand it, that's how one of the various Tube amplifier curcuit topologies work. Generally speaking, of what I have seen or read up on. (Noob on Tubes)
However, most pro audio gear that I know of to date has shifted to Class D Designs for live sound minus the Amp stacks for the guitar. Even so, for live sound, most of the sound from these is routed to the mixer to be amplified to the mains for larger venues.
The explanation seems to violate Ohm's Law. Electrical Power = Current x Voltage as stated by © Geoffthegreygeek.com 2020, as well as my own background & education in electrical power delivery systems and other sources. But I use the formula daily with LED's I work with and Batteries.
So, am I just not understanding what Dave Rat is saying? I highly respect the man. And I don't think he would be wrong. But something does not seem right?
A great simple explanation on Ohm's law is actually on Geoff website I always like the garden hose analogy.
I myself, became very Physically familiar with how electricity BURNS when I started trying to fix my own Christmas lights and experimented with converting them over to LED. (They do explode if you get it wrong!) and trying to work them off of a regular audio amplifier to have active Christmas lights instead of sequencing them with something like a controller or a dedicated circuit.
About the speaker wire and the 1 ohm calculation
I know it was just done to make the math simple, but 1 ohm speaker cables... That's a lot.
Rodger Russells site goes in depth about speaker wires and connections, and cable lengths.
(The webpage is a good read about how wire resistance and capacitance effects of signal, highly recommended as it shows the results on a O-scope)
Also, Rodger, from what I can recall worked at McIntosh and made some FANTASTIC SPEAKERS DESIGNS! So I know he knows his stuff. I wanted to include this from his site as a reference. And I encourage you to read the article he published on his website.
Here is the Conductivity rating in the industry standard unit of ICAS. More on ICAS Here
Excerpt from BlueSea Systems:
Notice the image depicting the physical amounts of the different materials you would need to meet the conductivity of either silver or copper.
Superconductors such as cryogenically frozen Mercury and other superconductors are not listed but again the chances of you using one of these materials either in your equipment is pretty much nonexistent. Still, would be fun to see what something like Carbon Nanotubes would be rated at if they could make wires out o those.
The thing that shocked me is that, Gold has a lower ICAS then Copper? Why do they use it on semiconductors instead of cheaper silver or copper? I know it does not corrode, but if we are talking about speaker wire resistance? I'm going to have to look into my own now as much of the
interconex I have purchased as of late actually include these gold-plated connectors. Which in itself is usually or using some type of solder to make the contact surface from what I understand.
Something to ponder about.
Anyways, would really appreciate if any of you could see where I made the error to Dave Rats findings. Thank you.
My Conundrum:
I thought when you lower the resistance, you increase the power output of transistor based amps.
Reference:
Perry Babins 12volt.com site calculators
Dave Rats Findings/ Reasoning from what I understand:
"-You get more output power/ Watts (He did use the term efficiency as well) at 16 ohms vs 10 ohms (speaker) loads".
This might make sense to me if this was a Tube amplifier with a Transformer for its output (as he did mention 70v commercial audio system) as such I understand it, that's how one of the various Tube amplifier curcuit topologies work. Generally speaking, of what I have seen or read up on. (Noob on Tubes)
However, most pro audio gear that I know of to date has shifted to Class D Designs for live sound minus the Amp stacks for the guitar. Even so, for live sound, most of the sound from these is routed to the mixer to be amplified to the mains for larger venues.
The explanation seems to violate Ohm's Law. Electrical Power = Current x Voltage as stated by © Geoffthegreygeek.com 2020, as well as my own background & education in electrical power delivery systems and other sources. But I use the formula daily with LED's I work with and Batteries.
So, am I just not understanding what Dave Rat is saying? I highly respect the man. And I don't think he would be wrong. But something does not seem right?
A great simple explanation on Ohm's law is actually on Geoff website I always like the garden hose analogy.
I myself, became very Physically familiar with how electricity BURNS when I started trying to fix my own Christmas lights and experimented with converting them over to LED. (They do explode if you get it wrong!) and trying to work them off of a regular audio amplifier to have active Christmas lights instead of sequencing them with something like a controller or a dedicated circuit.
About the speaker wire and the 1 ohm calculation
I know it was just done to make the math simple, but 1 ohm speaker cables... That's a lot.
Rodger Russells site goes in depth about speaker wires and connections, and cable lengths.
(The webpage is a good read about how wire resistance and capacitance effects of signal, highly recommended as it shows the results on a O-scope)
Also, Rodger, from what I can recall worked at McIntosh and made some FANTASTIC SPEAKERS DESIGNS! So I know he knows his stuff. I wanted to include this from his site as a reference. And I encourage you to read the article he published on his website.
Here is the Conductivity rating in the industry standard unit of ICAS. More on ICAS Here
Excerpt from BlueSea Systems:
Notice the image depicting the physical amounts of the different materials you would need to meet the conductivity of either silver or copper.
Superconductors such as cryogenically frozen Mercury and other superconductors are not listed but again the chances of you using one of these materials either in your equipment is pretty much nonexistent. Still, would be fun to see what something like Carbon Nanotubes would be rated at if they could make wires out o those.
The thing that shocked me is that, Gold has a lower ICAS then Copper? Why do they use it on semiconductors instead of cheaper silver or copper? I know it does not corrode, but if we are talking about speaker wire resistance? I'm going to have to look into my own now as much of the
interconex I have purchased as of late actually include these gold-plated connectors. Which in itself is usually or using some type of solder to make the contact surface from what I understand.
Something to ponder about.
Anyways, would really appreciate if any of you could see where I made the error to Dave Rats findings. Thank you.