Ohm Walsh Micro Talls: who's actually heard 'em?

Opinions vary on this one.

I set the sub's low pass (and I low cut the mains with an active x-over) just above the highest frequency hump or suckout that I want to EQ away. Basically my approach is to fix the room passively as much as I can, recognizing that below a certain frequency (which varies room to room), passive treatments tend to become ineffective and EQ is the only approach that works (for me, anyway, others may have had different experience here).

Note : EQ is much easier for reducing FR "humps" than it is for filling FR suckouts, so bear that in mind as you decide where to set the x-over point.

I've treated my room with lots of "passive" (including bass-buser type hemholtz devices) treatments, but IME these run out of steam somewhere between 70 ish and 120 ish hz, depending on the room. So I fix what I can passively, set the x-over just where the passive stuff starts to fail and let the EQ do the rest below that frequency.

I set slope, phase etc to get the smoothest response around the x-over point before applying EQ. There are two goals here - smooth overall bass response below the x-over frequency and smoothest response thru the crossover point. The latter helps insure an undetectable "hand-off" from main speaker to subwoofer and is absolutely critical for me. Since there are limited bands of EQ, you may have a judgement call in smoothing overall bass response versus super fine tuning the "hand-off". That is your call on the fly, made only (IME) via trial and error.

Many folks disagree with this approach and prefer a lower x-over point. That has never worked as well for me, but YMMV.

Marty

I use an emotiva Ultra 10 sub with my MWT's. I run the MWT's full range (they have almost no energy below 40 Hz)

I have the sub at low pass at about 50 Hz, so there is a slight overlap with them and the sub.

I avoid corner placement as much as possible with subs. I also try not to run a sub above 80 Hz, as they tend to get directional at that point. My goal is to have the sub sonically disappear, and that you only notice it when it's off.

Why is your x-over set so high @ 100 Hz?

Where is there an Ohm sub? I don't see it on John's site.

Finsup: I have a 7.4 HT system with all 100-S3 drivers. I use Yamaha's YPAO (RX-V763 with external amps), and it works fine. I also have a 2.1 system with 2XO's; an older HTR-5990's YPAO (no amps) works OK there as well.

Rbf1138: In my 7.4 system I have four Epik Empires, with the Empires EQ'd using an SVS AS-EQ1, x-overed at 80Hz. My 2.1 system uses an older ACI Titan XL with no EQ on the sub, x-overed at 80Hz. I also have a 4.1 system with two Microwalsh Short omnis for the mains. The sub is a Paradigm Ultracube 10, EQ'd with an Anti-Mode 8033, x-overed at 100Hz. All the subs work fine with the Ohms. I also have used the inexpensive Behringer 1124 Feedback Destroyer as a sub EQ and gotten good integration with the Ohms.

Frankly, I don't have the time, patience, money or know-how to EQ my sub/system. Right now I'm just trying to get the Velodyne setup so that I'm happy with it using it's built-in controls. An issue I still can't get past is that from album to album, artist to artist, the volume of bass will vary hugely.

I'll put on Deerhoof, and the bass will be waaaay too overwhelming and overpower everything. Then I'll throw on the Walkmen and it's nice and tight. I feel like I shouldn't have to be tweaking controls on the sub every time the song changes!