what do you think is the best acoustic treatment

[goraman]

The prefect solution (headphones).

Food for thought, One of the best rooms sonically speaking was a largish den with a very old cork floor,wood walnut paneling from the floor to your shoulders and lath and plaster walls nearly full of these.

Mounted heads 2 feet apart on every wall.
And 2 book cases of law books.

[Alex_UK]

That sounds like a room from a Scooby Doo episode Jeff! Well, it would freak me out, and I'm not even Shaggy!

[Rare Bird]

The prefect solution (headphones).

[Macca]

The prefect solution (headphones).

.

Or as I call it, throwing the baby out with the bathwater...

[goraman]

Or as I call it, throwing the baby out with the bathwater...

A good headphone set up can be very magical.
My point is there is no perfect room treatment (one size fits all) for every room.
Creativity is far better served with a lot of time spent trying different things.

Remember good headphones are speakers that come with there own listening room.

[purite audio]

Actually there are active room correction boxes available that will do everything, literally everything, frequency response ,group delay, first reflections, impulse times etc, check out the Trinnov website.
Keith.

[MartinT]

I'm surprised that passive room treatment is dismissed by some users in favour of complex digital room treatment. Passive works very well and need not be expensive - there are solutions other than TubeTraps available at much lower prices. Plus, of course, your own selection of furnishings.

I have some experience of treating two rooms that have held my hi-fi system. If anyone wants to discuss it further, let me know.

[purite audio]

Can passive room treatment , replace bass lost in a suck out, or correct phase or group delay?
Keith.

[MartinT]

Can passive room treatment , replace bass lost in a suck out, or correct phase or group delay?

It depends on what is causing it. A suckout - no, but it could even out the bass response so that a nearby reinforcement in frequency is reduced. Group delay - possibly if it's caused by reflections from side walls. Phase? More likely to be speaker crossover anomalies.

[purite audio]

It depends on what is causing it. A suckout - no, but it could even out the bass response so that a nearby reinforcement in frequency is reduced. Group delay - possibly if it's caused by reflections from side walls. Phase? More likely to be speaker crossover anomalies.

Foam can absorb some frequencies it has to be extremely thick to absorb lowish frequencies, some diffusion absorbs ion will help with first reflections and the impulse time of your room.