Author Archives: Dan

About Dan

For a complete biography, stop by www.danmarx.org and click around for a while.

Measurement & Review of the AIMIYA A07 Power Amplifier

Posted on December 20, 2023 by Dan

A few months ago I purchased the AIMIYA A07 Power Amplifier from Amazon for a whopping $60 during Prime Day. I’ve had the unit hooked up to my simple studio setup and have been very impressed with it so far. … Continue reading →

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Inexpensive Crossover Upgrade for the OSD Nero MB5 Bookshelf Speakers

Posted on August 6, 2023 by Dan

So I picked up a pair of OSD Nero MB5 bookshelf speakers about a month ago and after giving them a listen and measuring their frequency response, I decided these speakers need an upgrade! In a previous post I updated … Continue reading →

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Big Brother Has Arrived – The Sonorous 12S Subwoofer Build

Posted on November 2, 2022 by Dan

Earlier this year I built the Sonorous 10S subwoofer and have absolutely loved this subwoofer. So when the opportunity presented itself to build a second bigger version of this sub, I knew I had to do it. And so I … 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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Detailed Measurements and Technical Review of the Crest Audio Vs900 Power Amp

Posted on July 2, 2022 by Dan

I have to admit, I’ve got the bug once again. After building and listening to my little Sonorous 10S Subwoofer over the last couple of weeks, I’ve suddenly got this need for more, more bass, more low-end bump, more rattling, … Continue reading →

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The Complete Design and Build of The Sonorous 10S Subwoofer – Hits 26 Hz!

Posted on June 18, 2022 by Dan

This subwoofer project was 6 months in making but after a couple of weekends of really focusing on it, I’m happy to say that it is finally done! This will be the complete (and exhaustive) detailed design and build review … Continue reading →

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