Home Speaker Asylum

General speaker questions for audio and home theater.

RE: Speakers in rooms - final thoughts

I haven't seen Kal's review yet. I also don't have first hand experience with the DEQX in my system. I've only heard it as part of a couple of demos (NHT and Kyron). But I have researched it extensively, along with Trinnov and Lyngdorf/TacT.

I think DEQX is an awesome way to go if you're a after a fully active bi- or tri-amped system, particularly if you're a speaker builder. But if you're only going to use it as an equalizer and not use it's crossover capabilities, it's a harder sell.

The DEQX approach is to first equalize each speaker to be flat on-axis with FIR filters using anechoic measurements, which is fine as a general principle but may or may not be the right thing depending on the design of the speakers. But you can't really measure anechoic bass, and FIR filters are not suitable for equalizing bass frequencies. It also offers parametric EQ using IIR filters, which CAN correct the bass. But these filters are mono so you can't correct the bass response independently for each channel which is a serious limitation. Also, from what I've read on forums, subwoofer integration with DEQX is a chore and requires you to be an expert with the tool.

I would love the opportunity to compare the DEQX PreMATE or HDP-4 with a Lyngdorf DPA-1. On paper at least, I think the Lyngdorf approach is probably better suited for a typical audiophile whereas the DEQX is more oriented towards the DIY-er.


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