Speaker wire

[fpitas]

Banana plugs are perfect for the back of the amp or AVR. At the back of the front speakers I'm preferring the spades because of their angle and space saving. My on-wall speakers just use bare wire.

Well, use them if you like. I saw enough flakiness under ideal conditions that I won't.

 

[OldHvyMec]

What is funny to me, is a roll of #12AWG 50 foot or a pair from Ali Express cables that are terminated and 3 meter or so, is close in price.
20.00-30.00 for a roll, or 20-30.00 for a packaged pair of cables. There is no need to pick the ugliest thing you can find just because it works
either. Ugly is ugly. Do you willfully go for ugly women when you have a choice? I could argue a wheelchair will get you there or a bus
or your own car, transportation is transportation.

You could use Romex you dug out of a dumpster too. Personally I don't, BUT it doesn't mean I haven't. LOL

 

[sarumbear]

No it’s not a flexible cord’s maximum current rating is subject to how it is installed if for example it was covered with a thick layer of fibreglass then it would be derated. Nothing to do with audio or power use.

We are talking speaker cable, which is not installed and not covered. What you are talking is cable installed in buildings. No relation.

Think how the maximum current capacity of a cable is defined and you will understand what I said v

 

[Killingbeans]

A quick question, banana plugs are a must or it's just an easier way to connect the wire?

Mostly just for convenience.

There is no need to pick the ugliest thing you can find just because it works
either. Ugly is ugly.

You can get DIY cable sleeves in all kinds of designs and materials

 

[Doodski]

No it’s not a flexible cord’s maximum current rating is subject to how it is installed if for example it was covered with a thick layer of fibreglass then it would be derated. Nothing to do with audio or power use.

I use charts called free air and and enclosed to select current ratings of wire.

 

[sarumbear]

I use charts called free air and and enclosed to select current ratings of wire.

How do you select what current level to choose for a speaker cable?

 

[Doodski]

How do you select which current level to choose for a speaker cable?

Free air. Therefore the wire can handle more current.

EDIT: Providing there is no sheath around the cable and it's dielectric.

 

[sarumbear]

Free air. Therefore the wire can handle more current.

I meant the Ampere level?

 

[fpitas]

I always start with the cable risers I'm going to use, then select the cable that most closely matches those.

/

 

[Doodski]

I meant the Ampere level?

Like this?

Wire Size Chart for Conductors in Free Air

Wire Size Chart: Allowable Ampacities of Conductors in Free Air - 30C

wiresizecalculator.net

 

[Doodski]

More free air wire ampacity charts.>

https://www.uglys.net/docs/default-source/uglys-documents/errata/UglysResidentialWiring2017_Errata_Page2.pdf

Ampacity Chart | Wire & Cable Technical Resources | Lapp Tannehill

Determine the allowable ampacities of insulated copper conductors, single insulated copper conductors, and more from the National Electrical Code® Allowable Copper Conductor Ampacities tables.

www.lapptannehill.com

 

[sarumbear]

Like this?

Wire Size Chart for Conductors in Free Air

Wire Size Chart: Allowable Ampacities of Conductors in Free Air - 30C

wiresizecalculator.net

Let us select 14 AWB gauge wire. It has a resistance of around 15 Ohms for a kilometre, 30 Ohms for both lines. For a 3m cable cable that is around 0.1 Ohm. When a 4 Ohm speaker is fed by it, the bass frequencies will modulate the tweeter at around -30dB level. Maybe that’s not much but this is a forum where we diss DACs that measure less than 100dB SINAD.

This is why electrical charts are meaningless.

 

[Doodski]

Let us select 14 AWB gauge wire. It has a resistance of around 15 Ohms for a kilometre, 30 Ohms for both lines. For a 3m cable cable that is around 0.1 Ohm. When a 4 Ohm speaker is fed by it, the bass frequencies will modulate the tweeter at around -30dB level. Maybe not much but this a forum where we diss DACs that measure less than 100dB SINAD.

This is why electrical charts are meaningless.

Wow. Thanks for the calculations. Very revealing. When I used the chart I was wiring chemical trailers for fracking operations. Not for Hi Fi audio duty.
Like this stuff.>>

https://marvel-b1-cdn.bc0a.com/f00000000254230/www.nov.com:443/-/media/nov/images/products/caps/intervention-and-stimulation-equipment/chemical-additive-units/chem-transfer-van-overview.jpg?h=1080&la=en-us&w=1920&cropregion=0,0,1920,1080&hash=EE7A1E50CF1A6BCB253F5B1CBA178374

https://marvel-b1-cdn.bc0a.com/f00000000254230/www.nov.com:443/-/media/nov/images/products/caps/intervention-and-stimulation-equipment/hydration-units/trailer-mounted-hydration-unit-aerial-view.jpg?h=1079&la=en-us&w=1920&cropregion=0,0,1920,1079&hash=0C8B253AD702C91F0BFEFEEB0E221453

https://www.cheminst.ca/wp-content/uploads/2014/11/ChemEngMainPhoto.jpg

 

[sarumbear]

Wow. Thanks for the calculations. Very revealing. When I used the chart I was wiring chemical trailers for fracking operation. Not for Hi Fi audio duty.
Like this stuff.>>

https://marvel-b1-cdn.bc0a.com/f00000000254230/www.nov.com:443/-/media/nov/images/products/caps/intervention-and-stimulation-equipment/chemical-additive-units/chem-transfer-van-overview.jpg?h=1080&la=en-us&w=1920&cropregion=0,0,1920,1080&hash=EE7A1E50CF1A6BCB253F5B1CBA178374

https://marvel-b1-cdn.bc0a.com/f00000000254230/www.nov.com:443/-/media/nov/images/products/caps/intervention-and-stimulation-equipment/hydration-units/trailer-mounted-hydration-unit-aerial-view.jpg?h=1079&la=en-us&w=1920&cropregion=0,0,1920,1079&hash=0C8B253AD702C91F0BFEFEEB0E221453

https://www.cheminst.ca/wp-content/uploads/2014/11/ChemEngMainPhoto.jpg

My turn to say wow!

 

[Doodski]

My turn to say wow!

Oil and gas is big business for sure. They have all the cool toys.

 

[fineMen]

... will modulate the tweeter at around -30dB level. ...

Please explain, or was it just making fun of the o/p?

 

[sarumbear]

Please explain, or was it just making fun of the o/p?

I already explained and I wasn’t making fun. If you tell me what is not clear for you I will try to elaborate.

 

[thewas]

I already explained and I wasn’t making fun. If you tell me what is not clear for you I will try to elaborate.

Could you post the link to that explanation as I don't seem to find it either?

 

[sarumbear]

Could you post the link to that explanation as I don't seem to find it either?

There is no link. It’s Ohms Law and decibel calculation. Very basic.

As the most energy is generated by bass notes, the voltage drop caused by the cable resistance will modulate the high frequency signal that is emitted by the tweeter, which is fed by the same cable. In order to find the level of that, find the speaker wire resistance and divide that to the lower part of the speaker resistance. That’s the ratio that will modulate the voltage fed to the speaker unit. Convert that to dB. I chose 3m AWG #14 wire and 4 Ohm speaker.

 

[thewas]

There is no link. It’s Ohms Law and decibel calculation.

As the most energy is generated by bass notes, they will modulate the high frequency signal that is emitted by the tweeter. In order to find the level of that find the speaker wire resistance and divide that to the lower part of the speaker resistance. I chose 4 Ohms. That’s the ratio that will modulate the voltage fed to the speaker unit. Convert that to dab.

On which physical principle should a lower frequency signal modulate the a higher frequency signal in a wire? This is not a voltage divider or a total current brickwall limiter.