Classic old question - All about tuning Freq

osix
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1. What is tuning Freq ?

2. Where do i Adjust the Tuning Freq ?

3. What kinda Range i am looking at for Bass ?

4. What is the prefer Tuning Freq ?

5 If i listen to Hiphop , what Tuning freq who be good for me ?

6.Can i Tune my Sub at 50hz or higher Tunign freq ?

7 Can i tune my Sub at 100hz or higher ?

8.what is 0 db

9. What is is this + - 2 db i alway heard about .

10. My sub Fs is 31hz can i tune below 31hz

11. My 4th order bandpass is have a Tuning Freq of 60hz - is it too high ?

12. How do i reduce the tuning freq ?

13. can Tuning freq be below 20hz ?

14 What type of Tuning Freq i should use for different type of Music .

Free free to add to the question or answer them //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

hope it help some newbie like me too //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 
1. What is tuning Freq ?

This is the frequency in which your enclosure's port resonates. At this frequency, the sub will have limited cone movement and the port will be doing the majority of the sound output. When you make a ported enclosure, you are creating a Helmholtz resonator. If you would like more information on it, google it.

2. Where do i Adjust the Tuning Freq ?

Tuning frequency is based off of enclosure NET volume, port area (a two dimensional section of the port), and the length of the port.

3. What kinda Range i am looking at for Bass ?

That depends on the environment, music of choice, and frequency response of choice. The typical bass frequency range for music is around 25-100hz.

4. What is the prefer Tuning Freq ?

There isn't and it 100% depends on the individual and their goals for their system.

5 If i listen to Hiphop , what Tuning freq who be good for me ?

That depends on the goals for your system. Tuning higher will yield more output around the tuning frequency but will lower output below that frequency. If you tune lower, you will have a boost in output but it will not peak as loud as if you had tuned it higher. It will more than likely be louder at this lower point but not at the higher frequencies.

6.Can i Tune my Sub at 50hz or higher Tunign freq ?

You can but your frequency response will not be very nice too far below tuning. This will also cause a peak at and around 50hz.

7 Can i tune my Sub at 100hz or higher ?

You should not tune an enclosure for a subwoofer to 100hz.

8.what is 0 db

It's commonly used as a reference point for output. It's like saying room temperature is 22* C and anything above that is + whatever *C and anything below is - whatever *C.

9. What is is this + - 2 db i alway heard about .

See above. You may be thinking about a -3dB point. This is the spot also known as the half power point and where the signal is now down 3dB from the reference level.

10. My sub Fs is 31hz can i tune below 31hz

Yes.

11. My 4th order bandpass is have a Tuning Freq of 60hz - is it too high ?

No.

12. How do i reduce the tuning freq ?

Lengthen your port, while keeping port area and net volume the same. Increase your net volume while keeping port length and port area the same. Decrease your port area while keeping the port length and net volume the same.

13. can Tuning freq be below 20hz ?

Yes.

14 What type of Tuning Freq i should use for different type of Music .

You usually want to tune around the lowest frequency that is in your music choice. Many people don't listen to music with much content in the low 30s so they might want to tune higher than that to gain more output. Others may not want the extra gain of tuning higher and might like the extra low end that a low tuned enclosure has to offer. Tuning lower will usually smooth out some peaks in the frequency response but may make things boomy around the tuning frequency.

 
Everything referenced to tuning frequency is going to depend of the sub and the system goals. There is no generic "best" tunig freq. What works really well for one sub might not have an even similar result with a different one.

For each sub there is a combination of box volume and tuning freq that will result in the flattest freq response. Tune that sub above that freq and you will get a boost in peak output at and above tuning but the response will roll off more quickly below that freq. Tune lower than optimum and you end up with reduced output and you might get an improvement in low end extension. Go too low and you end up with response very similar to a sealed box. Increase box volume above the optimum and you create a response peak similar to the one created by tuning higher than opt. Go smaller than opt. and you depress the output and decrease the low end response.

There are some tricks you can use. High tuning and a big box will be really efficient at one small freq range. High tuning and a small box will give fairly flat response but with limited low end extension. Larger box and lower tuning can milk a little low freq extension out of subs that want a fairly high tuning.

 
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