Component Advice for Small Room with Lively Surfaces


Would sincerely appreciate any recommendations and advice from the community for a system for a listening room in a new home. Here are the parameters:

  • listen mainly to classic rock from the '70s and '80s and enjoy a good, deep bass
  • room measures 15' W (along wall where components/speakers will be placed) x 14' L x 9' H
  • room has wood floors, glass on 3 sides and stone on the 4th side
  • fabric window shades are present on 2 of the glass sides
  • built-in wood album display built into one of the glass sides
  • want the ability to both spin vinyl and stream
  • budget up to $50k

After auditioning the MBL 116, N31 and N51, I was about to pull the trigger but am wondering if an omni would be the best choice for a room with these characteristics and my listening preferences? Unfortunately, I am unable to audition these components in my room. Would monitors work best or full-range floor standers?  I do appreciate a good, deep bass. Have to admit this is a very confusing and subjective process, yet I am wondering if anyone who has faced the same set of parameters has any thoughts?  Many thanks for any tips and advice you would be willing to offer. Very much appreciated.  
vanquish

Showing 2 responses by audiokinesis

In my opinion working "with the room" rather than "against the room" matters a great deal... especially in small, lively room. Two things come to mind:

First, we want the reverberant sound to have essentially the same spectral balance as the direct sound. When the reflections sound like the first-arrival sound the timbre tends to be nice and rich, assuming the frequency response is good.

Second, in general early reflections are much more likely to be degrade clarity and/or image precision (including depth) than later ones, so if possible we’d like to be able to "aim" the speakers to avoid strong early sidewall reflections. Ime the smaller the room, the more critical this becomes.

Two technologies which can meet both criteria without reliance on room treatments are: Dipole speakers, and horn speakers... in both cases, assuming they are "done right".

A dipole speaker with a well-behaved, uniform radiation pattern can generate a reverberant field which is spectrally correct, and can be aimed to avoid strong early sidewall reflections. IF they can be placed fairly far out from the wall - five feet is my recommendation - then the backwave energy arrives after a long enough time delay that it is beneficial.

A low-coloration constant-directivity horn loudspeaker can likewise be aimed to avoid early sidewall reflections, while offering greater placement flexibility than a dipole since it doesn’t need "breathing room" for the backwave. Horn speakers tend to be much more efficient than other types, which means they must either be quite large to produce good low bass, or else they usually need help from subwoofers for the bottom octave or two.

In an ideal setup with either speaker type, we can minimize the "small room signature" cues of the playback room while effectively presenting the spatial cues on the recording. Thus even in a fairly small and lively room, we can hear "more of the recording" and "less of the room."

Disclaimer: I am commercially involved with both types of speakers, which means that I voted for these ideas with my wallet, and you are of course invited to take this with as many grains of salt as you like. 

Duke
Vanquish wrote: "This makes a lot of sense Duke and I am wondering if there are any particular dipoles and horns that you would recommend?" 

In my opinion SoundLab fullrange electrostats do an excellent job in a wide range of rooms, assuming they can be positioned five feet in front of the wall.  Less than that and they can still work well, but we will need to diffuse the backwave or, as a last resort, absorb it.  SoundLabs have an exceptionally uniform radiation pattern across either 45 degrees or 90 degrees front and back, depending on whether you go with the new (45 degree) panels or the old (90 degree) panels.   I prefer the new 45 degree panels UNLESS a rather wide sweet spot is needed. 

I make low-coloration horn speakers with room interaction very much in mind, which includes something that I don't think anyone else is doing:  I include user-adjustable additional upwards-and-backwards firing drivers to fine-tune the reverberant field. The fairly directional output of these additional drivers bounces off the wall behind the speakers and then off the ceiling before arriving at the listening area, so it arrives after a sufficiently long time delay without requiring much distance from the wall.  My website is under revision but you can see my current models at James Romeyn Music and Audio.  Jim is my partner. 

You mentioned Texas... I'm located about an hour from Dallas. 

Duke