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Multi-Way Conventional loudspeakers with crossovers

Orthoacoustic simple two way Unity corner waveguide
Orthoacoustic simple two way Unity corner waveguide
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Old 1st April 2019, 02:02 PM   #11
TNT is offline TNT  Sweden
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The non longer accessible pictures - are they available elsewhere?

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More distortion to the people!

Last edited by TNT; 1st April 2019 at 02:10 PM.
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Old 1st April 2019, 11:37 PM   #12
AllenB is offline AllenB  Australia
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Tonal balance does come with simplified radiation. Congratulations on achieving this level.
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Old 2nd April 2019, 08:20 AM   #13
Circlomanen is offline Circlomanen  Sweden
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Quote:
are they available elsewhere?
No. They are sadly all gone. I am going to make new measurements and post both pictures of the setup and spl-graphs soon (as in the coming month or two).

There is a thread on the Swedish site hififorum.se with all my ramblings and thoughts along the development process, but it is only text (in Swedish).

Quote:
Congratulations on achieving this level
I only used Tom Danleys Unity and Stig Carlssons OA ideas and combined them into something slightly new.

Cheers,
Johannes
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Old 2nd April 2019, 08:42 AM   #14
Circlomanen is offline Circlomanen  Sweden
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OA-hörnmedutan.jpg

This is without EQ (red trace) and with EQ (yellow trace) measured with my Umik from across the room approximately 4 meters from the speaker.

I EQ mainly by ear, and check afterwards with REW and Umic, and this is where I usually end up. If I EQ to a flat level all the way up to 20 kHz the speaker sounds extremely bright and bass-shy, similar to other constant directivity horns or waveguides. A normal direct radiating speaker will reduce the radiation angle as the frequency increases. This speaker has a uniform dispersal pattern throughout its whole bandwidth, which tends to sound overly bright in a normal listening space.

The large waveguide increases the efficiency in the midrange from 180 Hz to 3,1 kHz, and this needs to be compensated with (DSP) EQ. I use my MiniDSP 2X4HD for crossover and EQ in this project.
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