Low tuning question

[LoudCrownVic 5,000+ posts]

So, people say that sound quality increases the lower you tune your box... So why not tune to 1htz?

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[concept11253 10+ year member]

Humans on average cannot hear anything below 20hz. You would not be able to hear it if it was 1hz. Same on the high end. Sounds about 20000hz cannot be heard by the average human.

 

[Worlddre 5,000+ posts]

now im sure the scientific reason behind this but if you tune retardedly low like that you end up with a really high f3

 

[danteBirosel 5,000+ posts]

So, people say that sound quality increases the lower you tune your box... So why not tune to 1htz?

It's called Audible Frequency. The human ear, generally can only hear between 20Hz and 20 kHz.

 

[LoudCrownVic 5,000+ posts]

I have no clue waht f3 is. Id think a box like that would be very inefficient.

 

[LoudCrownVic 5,000+ posts]

It's called Audible Frequency. The human ear, generally can only hear between 20Hz and 20 kHz.

YAH, but a sub doesn't have to PLAY that... The sq would be increased in the other frequnecies- according to the theory that a low tuned box makes a good sounding one.

 

[CELLERBR 10+ year member]

Wewll for one your port would be about 8 miles long LOL....

 

[swimfreak26 10+ year member]

SQ gets better as you lower the tuning because the frequency response curve levels off rather than peaking as much.

The main reason nobody tunes that low is that in doing so you approach the response of a sealed box which requires a TON less space. To give you an example...the port length of a 4 cube box with 54 square inches of port area tuned at 35Hz is ~23.6 inches. That same box tuned to 1 Hz would require a port that is 36,335 inches which is about 1400 cubes worth of port alone for a 4 cube box. Just not reasonable when you can acheive essentially the same results sealed.

 

[LoudCrownVic 5,000+ posts]

Wewll for one your port would be about 8 miles long LOL....

Indeed, the longer the better //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

 

[nissanrider06 10+ year member]

shiz nit

 

[geezy21unc 10+ year member]

i love the negro in the picture "worlddre"!! LOL!

 

[96civ 10+ year member]

SQ gets better as you lower the tuning because the frequency response curve levels off rather than peaking as much.
The main reason nobody tunes that low is that in doing so you approach the response of a sealed box which requires a TON less space. To give you an example...the port length of a 4 cube box with 54 square inches of port area tuned at 35Hz is ~23.6 inches. That same box tuned to 1 Hz would require a port that is 36,335 inches which is about 1400 cubes worth of port alone for a 4 cube box. Just not reasonable when you can acheive essentially the same results sealed.

Wouldn't having such a large port lower the excursion badly since that amount of space is like an infinite baffle?

 

[LoudCrownVic 5,000+ posts]

Wouldn't having such a large port lower the excursion badly since that amount of space is like an infinite baffle?

Yes, I was thinking the same thing... THe efficiency would theoretically **** on a box such as that.

You'd think there'd be an equation to find the median point of maximum efficiency to the point where the sound would be the best.

But then, SQ is subjective, efficiency is not.

 

[LoudCrownVic 5,000+ posts]

Does anyone have an enclosured tuuned below 28htz? That is the lowest I have seen.

 

[96civ 10+ year member]

Does anyone have an enclosured tuuned below 28htz? That is the lowest I have seen.

I'll have some MDF left over after I build my box I've been planning... I could build another dummy box tuned at around 24 for the h3ll of it.