Half meter Power cable for Amp ? - Home Theater Forum and Systems - HomeTheaterShack.com

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post #1 of 15 Old 11-30-13, 10:47 AM Thread Starter
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Half meter Power cable for Amp ?

Hi - i am looking for a good flexible power cable for two amps - but they are very close to the power conditioner where i will plug them in and cant seem to find a 1.5 foot cable ?

the ones i am using now are OEM - from EMO for the XPA 5 which is nice but too LONG for me - and a PS Audio for my QSC GX 5 and again too long since i rearranged my Rack - i want to replace them both for something around 1.5 feet or at most 2 feet -

what would be the Min. gauge to use for the them - dont want to starve them of current but dont need to over do it - the PS audio cable i have is 3 feet but thick and not as easy to bend - it was fine before but now just too close and cant use them that long now

any one can recommend some power cable links etc, - price needs to be fair - i am not going for the thousand dollar cable - i like to stay under $100 for sure for each cable -

i was looking at audio advisor for the pangera i think - not sure if 14 gauge is enough for the AMPs ?

thanks
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post #2 of 15 Old 11-30-13, 11:50 AM
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Re: Half meter Power cable for Amp ?

A 14 gauge power cord is good for up to 1,800 watts. The XPA-5 has a maximum power consumption of 1,200 watts. In normal operation, it likely won't be drawing half that amount, so you're safe. Why not just cut the stock power cord you have to the length you need and attach an aftermarket plug ? Wattgate or Marinco are good, inexpensive choices.

http://www.parts-express.com/wattgat...clear--110-442
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post #3 of 15 Old 11-30-13, 02:33 PM
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Re: Half meter Power cable for Amp ?

exactly. a 16 gauge cord will be fine too. and just snipping your existing cord and attaching a new plug would be perfectly fine
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post #4 of 15 Old 11-30-13, 03:41 PM
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Re: Half meter Power cable for Amp ?

The pangea is a good value for money power cord. Do give it a test drive.
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post #5 of 15 Old 11-30-13, 03:44 PM
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Re: Half meter Power cable for Amp ?

this should do you fine

http://www.monoprice.com/Product?c_i...seq=1&format=2
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post #6 of 15 Old 11-30-13, 03:58 PM
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Re: Half meter Power cable for Amp ?

Depending upon why you need exactly half a meter you can just cut the cords you have. If you are shortening it to have a clean and tidy layout then cool. If you are shortening it because you think you will get better performance then you are wasting your time. Same with buying some "special" power cord.

The physics of providing power to any device is actually very straight forward and there is no magic. Honest. If your device has a maximum draw of 10 amps and your power cord can handle 15 amps there is no possible way to "starve" your amp of power. Cable for 15 amps is number 12. But that is still over rated to deal with a continuous 15 amps plus derating for temperature, etc. Power drawn by an amp is based upon the music and typically the bass frequencies draw the most. So if you have a powered sub then you will never get to the high end of the power draw.

The only feature that I would want to see for sure in my power cord is simple that it be stranded, which all power cords are. Stranded wire is flexible and has slightly better conductance but it is miniscule.

The bottom line is due to the laws of physics there is absolutely nothing to be gained by spending money on a "special" power cord. It might look cool and have gold contacts and they might even shield it but none of these features has any affect whatsoever on amplifier performance. The people who sell this stuff make it sound like it does make a difference but they are preying on those of us who want the best listening experience possible but don't have the background to understand that they are selling snake oil.

The power conditioner is the single best thing you can do. Don't sweat the wires.
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post #7 of 15 Old 11-30-13, 05:22 PM Thread Starter
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Re: Half meter Power cable for Amp ?

thanks for all the reply's - the reason for wanted to change out my power cords are for the size - they are just too long and i hate to see it behind my rack so much extra cable - this is the cord i just ordered for my yamaha CD player- http://www.audioadvisor.com/Pangea-A.../#.UpqatSctoTA

i didnt get it yet- i want to see how this one fits and test the length for the rest of my stuff -- if good i can get more for the other stuff -

but from what i am hearing here - a 14 AWG from Monoprice would be ok ? but what about shielding etc

my first concern is its thick enough to handle the current of the amps etc, - second is the shielding etc, inside - i dont want to introduce hum or any noise from the power supply - right now my system is pretty much dead quiet -

i have two PS audio cables - i am not looking to cut and make it shorter - i will ruin them for sure -

i like to try to sell them once i get new ones - they are great cables - and made a difference in the low end most - but i my amps were further apart from the power conditioner before and the 1 meter cable was fine then - now i have the EMO Amp - then power conditioner - then GX 5 amp - close and 1.5 feet is all i need now -

i have about 6 feet of the EMO amp now all tied up in the back - another 3 foot from the GX5 just too much extra cables -

my CD player also too long - etc, - i want to keep it neat -


so if i use a 14 AWG on the EMO AMP and GX5 - it would be enough to handle the current and wattage etc, ?

the OEM is pretty thick - very flexible which is good but too long -

thanks -
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post #8 of 15 Old 11-30-13, 07:59 PM
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Re: Half meter Power cable for Amp ?

Unless you have a Tesla coil running in your living room you don't need shielding for your power cord. The first thing that happens when the power enters your amp is that it gets isolated from the city power through a transformer, then smashed and filtered into a straight line. The only lines that ever get shielded in electronics are low voltage signal lines that are about 1 to 2 volts not 120 volts. Hum is a result of ground issues not shielding.
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post #9 of 15 Old 11-30-13, 08:02 PM
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Exactly. Him is ground loop issue. Not shielding
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post #10 of 15 Old 11-30-13, 09:16 PM Thread Starter
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Re: Half meter Power cable for Amp ?

ok thanks - always learning something - i read that low level hum can be from the power cables - 50 - 60 hz - etc, -

i dont really have a issue - and with the Emo XPA 5 and UMC 200 - its quiet - even more so -

the XPA 5 shows a power of 1800 watts - i would assume thats full load - which i do play loud - but not 100 % either and not for very long periods - just too loud -

i noticed the power cords on Monoprice - are good - 2 feet size - but i noticed they say for PC Connection - would this also fit my Amps and CD player - Oppo etc, also - ?


thanks -
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