Database Update: HYanka BSF series subwoofers

These HYanka subwoofers are all over youtube, so I figured I'd put what I can in the database. They don't provide xmax figures, so I substituted 15mm.

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HYanka BSF-10-2

Design a subwoofer box for a HYanka BSF-10-2

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HYanka BSF-10-4

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HYanka BSF-12-2

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HYanka BSF-12-4

Design a subwoofer box for a HYanka BSF-12-4

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Database Updates: Kicker Competition Gold Anniversary Drivers to the database

50th Anniversary Kicker speakers in the database!

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Kicker Competition Gold 10

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Kicker Competition Gold 12

Design a subwoofer box for a Kicker Competition Gold 12

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Kicker Competition Gold 15

Design a subwoofer box for a Kicker Competition Gold 15

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Database Updates: Skar SVR Subwoofers to the database!

Update: We've added Skar SVR subwoofers to the database!

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Skar SVR-8 D2

Click here to design a subwoofer box for a Skar SVR-8 D2!

Click here to view subwoofer box designs for a Skar SVR-8 D2!

Check Amazon for pricing and availability of a Skar SVR-8 D2!

Skar SVR-8 D4

Click here to design a subwoofer box for a Skar SVR-8 D4!

Click here to view subwoofer box designs for a Skar SVR-8 D4!

Check Amazon for pricing and availability of a Skar SVR-8 D4!

Skar SVR-10 D2

Click here to design a subwoofer box for a Skar SVR-10 D2!

Click here to view subwoofer box designs for a Skar SVR-10 D2!

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Skar SVR-10 D4

Click here to design a subwoofer box for a Skar SVR-10 D4!

Click here to view subwoofer box designs for a Skar SVR-10 D4!

Check Amazon for pricing and availability of a Skar SVR-10 D4!

Skar SVR-12 D2

Click here to design a subwoofer box for a Skar SVR-12 D2!

Click here to view subwoofer box designs for a Skar SVR-12 D2!

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Skar SVR-12 D4

Click here to design a subwoofer box for a Skar SVR-12 D4!

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Skar SVR-15 D2

Click here to design a subwoofer box for a Skar SVR-15 D2!

Click here to view subwoofer box designs for a Skar SVR-15 D2!

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Skar SVR-15 D4

Click here to design a subwoofer box for a Skar SVR-15 D4!

Click here to view subwoofer box designs for a Skar SVR-15 D4!

Check Amazon for pricing and availability of a Skar SVR-15 D4!

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Database Updates: Skar SDR Subwoofers Added to the Box Calculator Database!

We added the Skar SDR series subwoofers to the subwoofer.tools box calculator database! Click the links to get started on your new subwoofer box!

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Skar SDR8 D2

Design a subwoofer box for Skar SDR8 D2

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Skar SDR8 D4

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Skar SDR10 D2

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Skar SDR10 D4

Design a subwoofer box for Skar SDR10 D4

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Skar SDR12 D2

Design a subwoofer box for Skar SDR12 D2

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Skar SDR12 D4

Design a subwoofer box for Skar SDR12 D4

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Skar SDR15 D2

Design a subwoofer box for Skar SDR15 D2

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Skar SDR15 D4

Design a subwoofer box for Skar SDR15 D4

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Skar SDR18 D2

Design a subwoofer box for Skar SDR18 D2

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Skar SDR18 D4

Design a subwoofer box for Skar SDR18 D4

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Why does streaming music sound awful in my system?

Why does streaming music sound awful when compared to physical media or a downloaded track? You connect the phone to the stereo, fire up your favorite music streaming service, find your favorite album and push play.

You're disappointed because the musical experience is as flat as the front of my khakis.

The reason it sounds flat is that it has been flattened out. The music amplitude has been constrained to a specific dynamic range. Loud peaks are quieted down and soft passages are pumped up. Streaming services call this "normalization".

Normalization is turned on by default because most of the audience streams from a mobile device to a small Bluetooth speaker or a stock car stereo for background noise.

Which is fine if you just want background noise.

If you're like me and want to experience the music, you need to experience the highs and the lows, the quiet and the loud. You gotta have all of that to really feel the music.

You need to turn off Normalization.

To turn off Normalization, grab your phone. Open your streaming service. Find the settings. Scroll down until you find normalization. Set it to off. 

Now that your streaming service isn't constraining your music, go rediscover your favorite albums all over again.

Why does your calculator produce different results than other calculators?

 

It's been a while since I posted a video. I've been busy. 

Over the summer of 2022 a user of the website reached out to me and asked why subwoofer.tools produced a different set of overall outside dimensions than another online calculator. The user asked which calculator produced the "correct" results.

The good news is, both calculators are technically correct. The best kind of correct. 

In this video, I explain why both calculators are correct, and I also provide a little bit of insight into a new feature I've been working on for the box calculator. Hint: there's a lot of math involved. 

Can I downfire or upfire that subwoofer? Do the math!

 Not all subwoofers can be upfired or downfired. Some subwoofer drivers need to be mounted on the vertical plane, firing into the room.

Determining this is easy: just make sure the woofer's suspension is strong enough to prevent gravity from pulling the driver down less than 5% linear excursion.

The formula looks like this:

We need to know a subwoofer driver's resonant frequency and Xmax. Resonant Frequency is simply the frequency that the driver will "ring" at. Xmax is maximum linear excursion. Our goal is to not lose 5% of linear excursion.

Example of the formula using a Rockford Fosgate R2D2-12 Prime Subwoofer driver, we can use it for upfire and downfire:

Example of the formula using an early 1990s Rockford Fosgate Punch 12. We should use this one to fire into the room: 

I hope this helps you with your subwoofer design!