Large speakers plus EQ, what have you done?

pickindoug, these eq units are what you need, but they are probably "one-offs" made especially for my "one-off" tri-amped Super Big Reds with their "one-off" electronic crossover. I bought these from a recording studio that went under.

Yamaha NS-5000. 12 inch woofers. 26 hz. Very satisfied

I also have the NS-5000 with a CODA #16 amp and is a really great coherent sound. I do not want to eq anything on this system or add any subs. I have used convolution filters with other systems that were in smaller rooms with different speakers,

I will be buying an open baffle speaker in 2026 that uses multiple 16-inch woofers, and the bass on that speaker is setup using some sort of analog eq. I think there will be 5 Eq settings on the bass. That speaker sounded so good that I am going to get it and flip back and forth with the NS5000. 

Another way I have eq'ed bass is using the services of Mitch Barnett of Accurate Sound CA. His solution works with digital streaming servers such as ROON. I used that with my old Thiel CS3.7 which were in a too small room. I got some genius level convolution filters made by Mitch for that room, speakers, and listening position.

I just purchased a White Instruments Model 4856 graphic equalizer. I only set it up Wednesday so I can't say much about my satisfaction with it. I'll be playing with it for a few days. 

I can tell you it's extremely quiet. I tried a Schiit Lokius and found it produced both hiss and hum, so I returned it. The White added no detectable noise. 

White Instruments was in high end studios for decades. I think they are still in business. 

@erik_squires 

A little follow-up. A few months ago I tried using a HPF and sub to deal with my low end issues. That was pretty successful below 80hz, but I still had other things I wasn't satisfied with. I bought the White EQ to work on those. But I eventually realized I could take a different approach and use the EQ to deal with all the frequency issues. Today I worked on that and essentially eliminated the need for the sub, although I'm still working on integrating it below 40hz. 

My speakers are stand mounted but do have a pair of 12" woofers that put out plenty of bass. I resisted using an equalizer because of potential phase issues so went with the HPF and EQ on just the low end. But the White Instruments unit has excellent phase coherence and I'm not hearing any smearing or imaging issues. I'll continue to tweak, cause that's what I do, but I'm pretty happy with what I'm hearing.