Originally Posted by TheLion
@ Tom Danley or Ivan Beaver
Dear Tom and Ivan,
thanks for chiming in!
I am evaluating a few system options in preperation for my SH-50s.
I would appreciate it very much to hear your take on Room EQ. After disappointing results with a couple of EQ solutions (Audyssey Pro, parametric EQs,..) I have used a PC based approach for the past months. The application Audiolense is generating FIR based filters. It acts not just in the frequency domain but also in the time domain (Group Delay correction towards minimum phase).
I am wondering if you recommend using such EQ with your Synergy horns? Due to the technical aspects of your design (frequency/phase cohorency, less room influence due to controlled/narrow directivity) the interaction with a "time correction" FIR filter is pretty special.
I would love to hear your thoughts (+ about digital room correction in general)! Thanks
The real issue is not what to use, but what is the problem? There are certain things that can be "fixed" with eq, and other things that can't.
Offset drivers is one of the biggest things that plagues most loudspeaker designs. This is not a problem with the Danley products. So that is not something to be concerned with. All the FIR filters in the world cannot fix offset driver problems-except for a single listening position.
FIR filters do have some special properties to them, but they are not without their problems (signal delay for example).
They are not a "cure all"-even if you know how to use them properly.
There is no "magic pill" or box you can put in your system and it all start to "come together".
It really comes down to the tools available (products used in the job-measurement tools available and what you can see with them) and knowledge about both the measurement tool, the "processing tools", how sound reacts and interferes with itself and other objects and so forth.
Having all the best of everything does not mean that you will get great results. If you don't know what you are doing, then you could make it worse.
That is part of the whole idea behind the Danley products. We try to make the products as good as possible (amplitude/phase etc) right out of the box, so you don't have to apply a lot of corrective eq to get it to sound right.
Now aligning the various parts of a system together, level and so forth-that is pretty much straight forward and easy. Untill you get to the subwoofer part-and that may or may not be an issue-depending on the particular system.