What happened this time?! EQ With a Healthy Side of Hum. So I was on this job site the other day, with the classic set of challenges. The client had bought a high-end 2-channel system from the integrator: Wilson Duette speakers, Linn preamp, Moon/SimAudio power amplifier. After it was all up and running, the client complained there was "not enough bass". So, the integrator sold him a couple of JL Audio subwoofers and asked me to come along and make the whole thing work - setting crossovers, time-aligning the speakers, balancing levels, equalizing the response, and voicing. We used a trusty Ashly ne4400 DSP audio processor; it’s a pro-grade digital audio processor with EQ, crossover, delay, level - the works. When I got to the location, things were a far sight worse than just "not enough bass". The installation of the EQ hadn't gone quite right; they had no audio signal, but a *lot* of hum. Client was steamed. So in I dove. In cases like this, there
Calibrate it All! Is it worth doing a specialty audio calibration in areas of a residence outside the dedicated theater? Absolutely! Getting the spectral balance, bass management, and time synchronization of audio systems tuned for each and every environment is a pretty simple and cost effective way to upgrade the sonic experience. You can get good dialog clarity, smooth bass, and a reasonably good spatial rendition with an hour or two spent in every space. You do need to have some digital EQ functionality in the system, and that is getting pretty easy these days. I am not talking about auto-EQ, which I contend still doesn’t work right (unfortunately). I mean some number of bands of EQ for each channel that you can adjust while monitoring an analyzer application running on a laptop. That function is available in a number of multichannel amps (Sonance, Ashly, Powersoft, to name a few), in a number of receivers and decoders, and of course, as stand-along EQ devices placed betwe