Author Archives: Dan

About Dan

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

Simulating Subsonic Filters and Subwoofer Response-Excursion Effects

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

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!

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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3 Simple Modifications that Make the Jamo Concert Series 93 II Speakers Really Shine

Here are 3 simple modifications I made to a pair of Jamo Concert Series 93 II bookshelf speakers that give them a much more balanced and more neutral sound with better bass extension better vocal response. I’ll do a complete … Continue reading

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Sealed 15″ Ultimax + MiniDSP + Crown XLS 1002 + Remote Trigger = Killer Subwoofer Project!

About a year and a half ago the wife and I decided to retire our old entertainment center and completely make over our family room. We bought a new TV, a huge couch/sectional, a new area rug, a new leather … Continue reading

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How to Build a Rockin’ Outdoor Speaker Setup with Sump Pump Subwoofer

At long last, here is the complete write-up on how I installed a killer outdoor speaker setup, complete with 12″ subwoofer, using mostly gear from Craigslist, Amazon, Crutchfield and The Home Depot. I’ll go into how I designed this outdoor … Continue reading

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