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Triticum's Improved Port Area Calculator


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Just now, strangeduck said:

5k 

Yours is kinda a special situation.  No matter what you do you are going to lose a lot of output to port compression.  A port big enough to accommodate that level of power density just isn't practical. 

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5 minutes ago, Triticum Agricolam said:

Yours is kinda a special situation.  No matter what you do you are going to lose a lot of output to port compression.  A port big enough to accommodate that level of power density just isn't practical. 

Yes, you know my struggle. We have discussed it. Lol

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2 minutes ago, strangeduck said:

Yes, you know my struggle. We have discussed it. Lol

Yup, I remember now :-)

"Nothing prevents people from knowing the truth more than the belief they already know it."
"Making bass is easy, making music is the hard part."

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U7qkMTL.jpg  LgPgE9w.jpg  Od2G3u1.jpg  xMyLoO1.jpg  9pAlXUK.jpg

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11 minutes ago, WalledSonic said:

So whats the downside of running a smaller port than necessary?  Port compression and increased impedance rise?

Im happy with my results.  Although everyone is trying to modify it live so it kicked me out on my 3rd run.  

Thanks Triticum.

The biggest drawback of too small of a port is decreased output around tuning and port noise.  

Port compression can eat up a significant amount of your output.  At around 30 m/sec I've measured about 3 dB of compression with the testing I've done, so that's like half your amp power being wasted.  Above 30 m/sec it can really get ugly.  

"Nothing prevents people from knowing the truth more than the belief they already know it."
"Making bass is easy, making music is the hard part."

Builds:

U7qkMTL.jpg  LgPgE9w.jpg  Od2G3u1.jpg  xMyLoO1.jpg  9pAlXUK.jpg

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This is awesome. Once I get back home later I will check it out and compare to some simulations in WinIsd and let you know my results. I'm glad you made this. I can't stand the in2 per ft3 rule. 

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21 minutes ago, DLHgn said:

This is awesome. Once I get back home later I will check it out and compare to some simulations in WinIsd and let you know my results. I'm glad you made this. I can't stand the in2 per ft3 rule. 

I'm glad you like it!  Let me know if you find anything that doesn't look right after playing around in WinISD

"Nothing prevents people from knowing the truth more than the belief they already know it."
"Making bass is easy, making music is the hard part."

Builds:

U7qkMTL.jpg  LgPgE9w.jpg  Od2G3u1.jpg  xMyLoO1.jpg  9pAlXUK.jpg

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1 hour ago, Triticum Agricolam said:

Yeah unfortunately since I used Google docs, multiple people can change the results at the same time.  I don't know of a better way to set it up other than this though.  

If they download as an excel file and open it in excel, they wont have to worry about others interactions.

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This is pure gold! Thanks man!

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Your calculator agrees with many of my designs, i like it.

 

I noticed that your calculator does not take subwoofer size and quantity into account like other calculators I've seen. Could you explain why that value is not used?

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On 12/5/2014 at 8:06 PM, juan777 said:

See yall there, I'll be the drunk Mexican with aviators on.

On 12/6/2014 at 10:32 PM, boom50cal said:

I did see Juan LMFAO! He REALLY WAS the drunk mexican with Aviators on!

 
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