BIG exponential sub tuned to 22Hz

[madam]

Hi Everyone...... and a Happy New Year!!!!

I've just finished a crazy sub.... It's tuned to 22Hz.

I use a Peerless XLS-12 (830500 if I'm right) and it rocks the house 4 only 2 watts!!!!!


The drawing contains MILIMETERS!!!!!!

[carolus]

....my best wishes for this "new" year ....
You are a lucky man with your construction (home made?).....congratulations.
What is your configuration (2/3/4 way or more) and filter (passif/actif)?
Al horns (drivers)?
Allez, salukes

[Dr.EM]

Sounds awesome, got any photos of your construction? Drawing suggests it would just barely be able to stand tall in the average room, full floor to ceiling.

[MaVo]

I am interested in doing something similar. Can you post your simulations please? On a sidenote, the path looks rather short for a 22hz tuned horn.

[madam]

Originally posted by carolus

You are a lucky man with your construction (home made?).....congratulations.
What is your configuration (2/3/4 way or more) and filter (passif/actif)?
Al horns (drivers)?
Allez, salukes

Defenetly not home-made. I chose a Corp. with CNC machines and other stuffs!! It must be made perfect... otherwise.... unwanted vibrations

Originally posted by Dr.EM
Sounds awesome, got any photos of your construction? Drawing suggests it would just barely be able to stand tall in the average room, full floor to ceiling.

I made it as cut it in half (longways) Use only 1 speaker. ..... but U can lay it on it's side...... (even use it as a bed

Originally posted by MaVo
I am interested in doing something similar. Can you post your simulations please? On a sidenote, the path looks rather short for a 22hz tuned horn.

This is from the late 70's early 80's...... It's made with compromises...... you would need at least double size horn for 22 Hz..... (you couldn't moooooove it.... even the 1 speaker construct weights with 30mm MDF/plywood something about 120-130 Kgramms)

[Rademakers]

This is from the late 70's early 80's...... It's made with compromises...... you would need at least double size horn for 22 Hz.....

Still the horn path seems more like a 1/4 wave length of 45 -50 Hz (rough quess). Where does the quoted 22 Hz originate from and how much dB is it down?

Best regards Johan

[AndrewT]

one can truncate a 22Hz exponential horn, but this is simply a pair of W type upper bass horns.
It will not reproduce well down to 22Hz, no matter what drivers are put in there.

It's certainly not a sub-bass horn.

This is from the late 70's early 80's......

It's more likely to be a copy of a small cinema speaker from the pre-war era.

[Horexx]

This project reminds me of the
D.B. Keele: K151 or 2240H "W" Horn
http://www.geocities.com/loudspeaker...eele_W_Box.doc

A simulation of an 18 Hz Sub you can find here:
http://www.audioheritage.org/vbullet...ad.php?t=14848
Some comments are added.

Peter

[djk]

The design shown is an adaptation of the Olson (RCA) bass horn, adopted for the Shearer (MGM) system.

The original performance with a stacked pair in 4Pi with wings was 55hz.

In 2Pi they are good to 40hz (from personal experience).

[Eva]

Considering the dimensions shown in the drawing from the first post, it looks like a 45Hz horn. This is unless something important is missing.