Anyone built the Decca Corner Horn (TQWP)?

[Stevie342000]

Did Anyone ever build the Decca Corner Horn?

I have built the Decca Corner Horn. Posted here and at "drboarblogspot". Your drivers should work, lightconed drivers with highQ and high Fr works decently but best is low Q and low-mid Fr. Worst are high Q low Fr drivers like the KEF B200.

I was suprised how good DCH sounded with no damping what so ever! Felt glued to the walls improved them further and so on.

I thought you did as it was not clear hear but I later found your Dr Boar Blogspot, one version I saw suffered from the on line translator but the English version was OK.

From the parameters of the Richard Allen Driver I thought it should work as well, even though they are 12" drivers.

What I was concerned with was the bass end, how far did it go down?

Did you need a sub-Bass Woofer?

And was it all one note and pumping or honking at the low end?

The top end of course will be rolled off unless you use a Lowther or similar single cone driver, or that would be my assumption.

Any thoughts?

 

[DrBoar]

With the KEF B200 it was one note bass. The Peerless drivers on the other hand with Q around 0.3 and Fr at about 40 Hz, they sounded really good tight bass down to 40 Hz or so. The Philips 9710 has a 10 db lift above 2 kHz on axis and facing forward it sound quite bad. Facing backwards the end result is far more balanced.

The pipe exit is quite convoluted but in my testing a more conventional opening really did not change anything.

If I could get spousal approval of a pair of Deccas for the TV setup I would build a pair, they are that good and they look cool as well.