Speakers & the room


After a couple of years playing around with different speaker positions I came to a conclusion.My room sucks..No matter what I do I can't get it right..My room is about 15x24 with 3 different ceiling hights..My speakers are about 5' from the back wall and 3' from the sides.This seems to be the best but it's so far off from what I want.I have moved my listening position everywhere also.If I sit at the same distance away from the speakers as they are apart my imaging is great but I'm missing the bass and the extreme lows.And of course if I move my listening position farther to the back wall i get great bass but the imaging vanishes.I hear very large tonal changes with even small changes in my listening position.is my room doomed or is there help?My speakers are Artemis/EOS full range with tons of acoustic treatments from auralex.Any help would be appreciated..
spaz

Showing 1 response by martykl

Funny you should ask!

I use Verity Parsifal Encores (among others) and the sound in my current room (similar to yours) is nowhere near what it was in my previous listening rooms. The P/Es employ monitors jumpered to woofer cabinets like your EOS.

I looked into TacT/Lyngdorg/DEQX but they're mostly direct sales so it's harder than usual to get a handle on this rather expensive fix.

Instead, I inserted a $600 Velodyne SMS-1 and and a second amp between the woofer modules and the monitor modules of the Verity P/Es - no more "jumper madness" - for equalized bi-amping. The SMS is a room analyzer (20 - 200hz), 6 band parametric e.q. (20hz-120hz) and active crossover (very flexible low pass, 80hz @6db/octave fixed high pass). Bottom line: problem solved.

Caveats:

The included high pass is kinda bare bones. Verity crosses the woofers and monitors symmetrically @ 150hz 12db/octave. I'm crossing an octave lower, asymmetrically. The sound in this room is vastly improved, but a bit different than I recall out of the P/Es in past rooms. Still, the sound is not only improved, but very satisfying period.

If I want to really do it right, I'll add an appropriate high pass (e.g. Marchand) and match the factory's passive x-over. This will add another $800ish to the price tag, bringing the total to $1400 plus additional bass amps (I had appropriate ampliication on hand already) - hardly cheap.

Finally, tweaking response via the PEQ is a time consuming trial and error process. You see a "bump" and position the band below it, reduce level, broaden and narrow the "Q" and nothing happens! So you start screwing around in nearby bands and, eventually, you get improvements. I managed to take a broad 12 db (relative to 80db) bump, and a couple of narrow 7 to 8 db swales and equalize to +/- 3.5 db from app 38hz to 200hz.

Not only is the bass response vastly better, but the mid-band sounds much better. The trade is the sharp roll off at app 38hz. I can get more extended response, but it will come at the cost of relocating one band of eq to the lowest bass and screwing up the nice, smooth performance I have now.

Generally, I don't like to modify the intended installation of a great product like the P/E, but - in this circumstance - this approach worked for me in a situation similar to yours and you may want to investigate further.

Good Luck

Marty