Tag Archives: filter

DIY Swans M3 Tower Speakers Get an Upgrade for 2024!

Posted on July 9, 2024 by Dan

I’ve had a pair of Swans M3 speakers since around the year 2000 – that was 24 years ago as of this writing – they were one of the first pair of really nice speakers I had ever built at … Continue reading →

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Building a Notch Filter for the Beyerdynamic DT 770 Pro Headphones with Measurements

Posted on January 14, 2024 by Dan

In this article I’ll go over how I designed, built and tested a passive notch filter for the Beyerdynamic DT 770 Pro 250-ohm closed-back headphones and include measurements using REW of the different filters responses. I bought these headphones over … Continue reading →

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Simulating Subsonic Filters and Subwoofer Response-Excursion Effects

Posted on July 8, 2022 by Dan

So this is going to be a Part II to my original post from 14 years ago where I first discussed the topic of proper subsonic filter design in conjunction with subwoofer enclosure modeling. It’s been a while, but I … Continue reading →

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How to Properly Design a Subsonic Filter

Posted on November 23, 2008 by Dan

I’ve got an old XEQ-2 active crossover made by EV that I’ve been using for the crossover on my subwoofer for my home theater. The one thing I always disliked about this EQ was the 30-Hz built-in high pass filter. … Continue reading →

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