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

Yes, make sure the rivers are tight and secure, but do not overtighten. This ca make a difference in the bass primarily.

With proper amplification and setup, the OHMs should do quite well, as well as most designs at low volume. An adjustable level sub might be one way to deal with Fletcher Munson at low volumes. Being able to adjust bass levels properly only when needed is the key. At higher volumes, it may be redundant for most recordings I would think. I would think your parametric equalizer should be able to make the desired adjustments for low volumes as well?

Thanks Newbee, Almarg has been saying similar.

Foster another possibility if all else fails is to make sure the tubes in the pre-amp are good.

Do yo still have other speakers to compare to? That would help determine whether the issue was unique to the OHMs or originating elsewhere perhaps.

Mapman, I will eventually replace the tubes. No other speakers to compare with however. Thanks

Foster, consider when you are going to change tubes that you will have an opportunity to change the tone substantially, + or - depending on the type of and brand of tubes you can use. I'm sure you knew that, but I was just thinking about your issue with the bass and low level listening and how it might improve with careful selection.