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PostPosted: Thu Jan 23, 2014 4:04 pm 
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Forum it was posted in.
Saw it after I gave home audio advice.


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PostPosted: Thu Jan 23, 2014 4:07 pm 
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the context is also buried in the lingo ... <running 4 6.5" 2 way> and ... <that the stereo shop installed>
you have to have followed that path at some point to pick it up
prism


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PostPosted: Thu Jan 23, 2014 4:25 pm 
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I must be coming down with something to have missed that.....

Apologies to all...


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PostPosted: Thu Jan 23, 2014 4:26 pm 
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soundfreak wrote:
I'm wondering what's the best guage to use for a 125W 4 channel amp running 4 6.5" 2 way Infinity speakers?

I currently have the 18ga that the stereo shop installed, but i am thinking it's too small. Maybe some 14ga would yield better sound quality?

thanks


I will ask the question that should have been asked before any advice was given out.

What is the distance between the Amp, and Speakers?

It is impossible to give an answer without this information...

Regards
Ohms

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PostPosted: Thu Jan 23, 2014 4:27 pm 
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Erik wrote:
I must be coming down with something to have missed that.....

Apologies to all...


You are not alone Erik, I missed it too. :oops:


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PostPosted: Thu Jan 23, 2014 4:29 pm 
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After I read your post, I was certain it had nothing to do with car audio! :lol:


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PostPosted: Thu Jan 23, 2014 4:36 pm 
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AudiOhm wrote:
soundfreak wrote:
I'm wondering what's the best guage to use for a 125W 4 channel amp running 4 6.5" 2 way Infinity speakers?

I currently have the 18ga that the stereo shop installed, but i am thinking it's too small. Maybe some 14ga would yield better sound quality?

thanks


I will ask the question that should have been asked before any advice was given out.

What is the distance between the Amp, and Speakers?

It is impossible to give an answer without this information...

Regards
Ohms


An educated guess would be about 12 feet for the front speakers and 8 for the rears.


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PostPosted: Thu Jan 23, 2014 4:42 pm 
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soundfreak wrote:
AudiOhm wrote:
soundfreak wrote:
I'm wondering what's the best guage to use for a 125W 4 channel amp running 4 6.5" 2 way Infinity speakers?

I currently have the 18ga that the stereo shop installed, but i am thinking it's too small. Maybe some 14ga would yield better sound quality?

thanks


I will ask the question that should have been asked before any advice was given out.

What is the distance between the Amp, and Speakers?

It is impossible to give an answer without this information...

Regards
Ohms


An educated guess would be about 12 feet for the front speakers and 8 for the rears.


Obviously you are fishing...18AWG is plenty, don't waste your money...

Regards
Ohms

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PostPosted: Fri Jan 24, 2014 9:12 am 
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Well one other issue i have with the original install is that the 18ga running from the amp does not run directly to the speaker. Instead it seems they ran it to before the door and attached it to the existing factory wiring harness which is probably about 20ga if that. So there two things here: 1) they spliced it in instead of a steady single length 2) the existing wire looks really wimpy - barely anything to screw down on the speaker crossover terminals.


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PostPosted: Fri Jan 24, 2014 12:13 pm 
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soundfreak wrote:
Well one other issue i have with the original install is that the 18ga running from the amp does not run directly to the speaker. Instead it seems they ran it to before the door and attached it to the existing factory wiring harness which is probably about 20ga if that. So there two things here: 1) they spliced it in instead of a steady single length 2) the existing wire looks really wimpy - barely anything to screw down on the speaker crossover terminals.


Are we talking about 125W/ch or 125-watt 4-channel amp (hopefully RMS). If so, very crude calculations shows that 125/4 = ~30 Watts. 30 watts / 12 volts = ~2.5A. 18-20 AWG will happily take on that much current, since it's not a continuous (i.e. power) current draw.
If you want to upgrade even to 16 AWG (it will take 3.7A continuous current), then sure.
http://www.powerstream.com/Wire_Size.htm


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PostPosted: Fri Jan 24, 2014 12:20 pm 
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here are the specs - i'm running 2 ohm speakers:

Specifications:
• 4 Ohm RMS Power: 75 Watts x 4
• 2 Ohm RMS Power: 125 Watts x 4
• 4 Ohm Bridged RMS Power: 250 Watts x 2
• PEAK Power: 1000 Watts
• Frequency Response: 10Hz – 40 kHz
• S/N Ratio: >100dB
• Damping Factor: >200 @ 100Hz
• Channel Separation: >65dB
• Minimum THD: <0.05%
• Input Voltage: 150mV – 5V


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PostPosted: Fri Jan 24, 2014 5:03 pm 
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Is there something distinctly wrong with the sound quality now? Making a continuous run from amp to speakers is better practice than splicing in to factory wiring. If you are doing the work yourself just buy some 16ga and go for it (or 12ga, if you want, though it's not likely to give you an improvement). If you are paying for the installation consider what you are willing to spend, and what the labour involved is.


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PostPosted: Fri Jan 24, 2014 6:51 pm 
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What price would you pay for confirmation bias to kick in?


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PostPosted: Sat Jan 25, 2014 3:12 am 
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The sound is ok but when I noticed it was only 18 ga and spliced into the factory wiring I couldn't help but think better wiring would help improve it. I would do the work myself. I've got some credit at 123 Ink Cartridges so I could have a spool of 50ft of wire with it.


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PostPosted: Sat Jan 25, 2014 6:36 am 
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soundfreak wrote:
The sound is ok but when I noticed it was only 18 ga and spliced into the factory wiring I couldn't help but think better wiring would help improve it. I would do the work myself. I've got some credit at 123 Ink Cartridges so I could have a spool of 50ft of wire with it.


At the end of the day, that's what's our hobby is all about. If you are going to do it yourself and if your amp/speakers terminals will take the wire gauge, why not give it a try?


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