Featured Building an openable subwoofer box!?

[Jimi77 Premium Member]

Yes. Unfortunately, people care too much about the looks. I guess that's why they installed it that way. They said it will get a grill down there but I doubt it will hold the impact of a speed bump.

If a speed bump or other road hazzard doesn't take it out, I think exposure to the elements will destroy it.

 

[AnthonyO 10+ year member]

If a speed bump or other road hazzard doesn't take it out, I think exposure to the elements will destroy it.

 

[Jimi77 Premium Member]

Interesting. I'd be worried about having to maintain/replace that foam constantly.

 

[BrazilianBassBuster]

Our (my) hearing drops off pretty quickly at ~30hz. It's more a sensation than hearing when you get that low.

For me, it's the other way around. The pleasurable bass only happens at 30 Hz and down.

I have just done a test hearing on this track:



I did it using my Sony MDR-XB700 headphones. The specs say it reproduces from 3 Hz to 28 kHz:

I'm also using a Fiio headphone amplifier which is currently receiving an analog input from the onboard Realtek audio device of a Gigabyte motherboard, with all equalization turned off. Hopefully, this is a reliable setup for this test.

Results:

At 10 Hz I can notice the vibration, but it isn't quite a "musical tone" yet. Then, with enough concentration, I can hear the "musical tone" beginning at 15 Hz. Then, starting from 15 Hz, I notice a gradual change in tone. This tone change is very mild in the beginning but becomes more noticeable from 18 Hz onward.

Conclusion:

It makes sense for my hearing capabilities and tastes to have:

1. A 4th-order high pass filter tuned to 15 Hz (-3dB@15Hz)
2. A subwoofer that extends down to 15 Hz and if possible with a slight gain in the 18-22 Hz range.

 

[Old_Slapper]

This topic reminds me of the old days where building stash boxes into subwoofer boxes was a big thing.

 

[BrazilianBassBuster]

This topic reminds me of the old days where building stash boxes into subwoofer boxes was a big thing.

Are you talking about the 90's? That's when I began creating car and home systems. Initially, I was trying to build a good dipole or IB setup. Then I began to create boxes after WinISD was released.

I see that now we have a much greater variety of powerful drivers that are more capable. But I think the reproduction of the lower end is still a big thing because the requirements of physics remain the same. Or am I missing something? (I need to make this question because I have been away from it over the last 15 years)

Anyway, I see the idea of using the car well might be getting popular, but I haven't yet seen anyone creating an openable subwoofer box. Have you?

 

[shredder1 10+ year member]

pleasurable bass
3 Hz to 28 kHz:

Fiio headphone amplifier


At 10 Hz I can notice the vibration, but it isn't quite a "musical tone" yet.

Conclusion:

It makes sense for my hearing capabilities and tastes to have:

1. A 4th-order high pass filter tuned to 15 Hz (-3dB@15Hz)
2. A subwoofer that extends down to 15 Hz and if possible with a slight gain in the 18-22 Hz range.

Anyway, I see the idea of using the car well might be getting popular, but I haven't yet seen anyone creating an openable subwoofer box. Have you?

Seek help my friend, someone is talking to you thru inaudible frequencies. 1st a 6th, headphones as a baseline then lets explore a full cabin IB setup. Gimme a break and shitpost somewhere else... please.

 

[BrazilianBassBuster]

@shredder1 , I won't quote your last post because I find it to be inappropriate and lacking in any sort of constructiveness. PS: If you ever do a hearing test, you'll notice they always use headphones.​

 

[shredder1 10+ year member]

@shredder1 , I won't quote your last post because I find it to be inappropriate and lacking in any sort of constructiveness. PS: If you ever do a hearing test, you'll notice they always use headphones.​

Constructiveness? I'm all about solid advice but to spitball your every harebrained theory and start multiple threads to shitpost the forum and for what? Your headphones play lower than my car?
I guess you win

 

[CertifiedHoodClassic]

@shredder1 , I won't quote your last post because I find it to be inappropriate and lacking in any sort of constructiveness. PS: If you ever do a hearing test, you'll notice they always use headphones.​

your headphone test told you that you could hear 15 hz musically. That's bull lmao.

 

[BrazilianBassBuster]

your headphone test told you that you could hear 15 hz musically. That's bull lmao.

You should research before reacting this way. There is a scientific publication about this:

Olson, Harry F. (1967). Music, Physics and Engineering. Dover Publications. p. 249. ISBN 0-486-21769-8. Under very favorable conditions most individuals can obtain tonal characteristics as low as 12 cycles.​

​

Under ideal laboratory conditions, humans can hear sound as low as 12 Hz and as high as 28 kHz.​

From previous tests that I made many years ago, I could not hear anything above 18kHz, but on the low end, I still have good sensitivity, despite my age of 45. And if you want an example of music that hits the low end, there is Bass 305, founded in 1992 and still actively producing content.

 

[BrazilianBassBuster]

Your headphones play lower than my car?

It depends on how you have designed your car system. You can't hit something if you haven't targeted it. But the car has great potential, if you explore it, to play 20 Hz or even 15 Hz much louder than headphones.

Headphones that target the low end can usually beat subwoofers when there is no car cabin gain (such as home subs). It's not the same experience, though. In my experience, the headphone hearing is somewhat limited. My headphones are big but not so special. They were relatively cheap and couldn't play 15 Hz or 20 Hz loud, but maybe 80 dB or 90 dB. There was another headphone model from the same series that was even bigger, but I couldn't find it for sale. Also, I'm not using any special cabling and I don't have a dedicated sound card. As a result, with my equipment, the low end comes with some high-frequency hiss.

I guess you win

But I'm not competing dude. I don't even have a working audio system at the moment.