For a boomy room, what panels will reduce mid-bass

Sayhi5,
I think you need a strategy, one of which may be:
* Problem Identification - first use a SPL meter and test tones to isolate the offending bass mode frequencies. These test measurements across a wide bandwidth should be recorded in say an Excel spreadsheet and will become your 'baseline' from which to compare alternative speaker-listening position changes and the addition of acoustical treatments

* Moving Speakers &/or Listening Position - try putting your listening chair 38% of the room's length away from the back wall, assuming your speakers fire down the length of the room. Take measurements and record them. Try moving your speakers to 1/3 the room length away from the front wall - measure and record. Try moving your speakers closer together so that they are farther away from the side walls and toed in 30degrees.

* Bass Trap Placemnet - assuming you are like most folks and opt for the low cost fiberglass filled traps, their effectiveness is maximized when pulled out from the wall a distance that equals 25% of the offending frequency. For example, if the problem frequency is 100Hz then the front of the fiberglass filled trap should be out from the wall 33.9" (1130/100*12*0.25). Consider this a starting point for experimentation because walls with doors or windows cause that room dimension to be longer for acoustic purposes due to less rigidity. So if you have a door on the long wall then the width dimension will likely appear acoustically longer than it actually is, so experiment by starting at 33.9" and then moving the bass trap closer to the wall in small increments - measure and record each move. Try the bass traps in all four room corners from floor to ceiling and also in the middle of the front or rear wall.

* Buy VS Build (DIY) - building bass traps is pretty easy and is less costly than commercial products, but to each his fancy. I've built hemi-cylindrical diffusers and filled their cavity with OC 701 to act as a bass trap. This does two things - traps bass and prevents mid/high freq absorption so as not to over dampen the room. Just a thought . . .

good luck. let us know how it goes.

I too have an acoustically wayward room and for decades suffered from boomy bass which no amount of messing about with speaker positioning seemed top fix. And I love deep, tight, articulate bass.

I'd read of bass traps, but the problem lies in borrowing them to try before you buy and, with a subwoofer, floor space is limited. I also don't fancy sticking panels all over the walls.

Eventually, in the wake of the expiry of my Pink Triangle D:AC, which I couldn't get repaired, I bought a TacT pre-amp/D:AC with Room Correction, which worked wonders in the bass, though getting the midrange and treble palatable is a challenge and a half. Though I still have it after six years and on many but by no means all albums manage to obtain great results, I'm not sure I'd recommend it. It's just too much of a trial to get right.

However, the Lyngdorf RP-1 RC unit is designed to go between an analogue pre- and power amp (or, with an integrated amp, in the tape loop) and is reportedly very good. It may not have the endless adjustability of the TacT (which some have said may be no bad thing), instead offering a choice of six factory preset voicings. Reviews indicate that most people seem to be quite happy with the Neutral voicing. As well as having a less overtly digital sound than the TacT (a devil to iron out), it also incorporates an electronic crossover to facilitate use of a subwoofer or two.

It isn't a D:AC, accepting and outputting only analogue signals with, reportedly, minimal influence, so you won't need to ditch any of your existing kit. As an alternative to wall panels and bass traps, it's certainly worth investigating.

A nice and inexpensive way to tame you room is to purchase a nice decorate 5
x 9 rug and hang it from the wall behind the speakers. I use a couple of pieces of carpet tack strip and nail that on 16" on center and then just hang the rug from that. I have one on the front and rear walls. Cheap and can look very nice as well.

Good luck

While a tapestry / carpet hung on the wall looks nice and tames high frequencies by absorbing them, it'll not reduce the room boom of lower frequencies that the original poster had enquired about - it's too thin and there isn't enough of an air space behind it.

If anything, hanging a tapestry carpet on the wall will reduce the high frequencies and throw the sonic spectrum further out of balance and exacerbate the room boom problem.

Kevinzoe

That has not been my experience. My guess is that with the system in question here we are not talking low bass but 120hz. The usual suspect.