Looking good, would be interesting to see in the future the directivities combined with the midbass horn.

I'll start a new thread when the time is right, but I can show some vertical measurements of both horns indoor. The room is about 40 m2 but it's L-shaped and there's cathedral ceiling. The sloping ceiling comes down behind the mic here, and ceiling height above the speaker is quite low. So this will effect the measurements some.

So here's the Vera Audio Sagarmatha 2-way horn.

This measurement was performed with our Vera Audio dual 18" subwoofer. Cross over at 120 Hz in this case. This subwoofer has some serious output capability, and obviously something that's needed to keep with our 2-way horn. And while it's not directly small, it's not huge either. Sorry for the cable and amp mess.

Not many will show measurements above a reflective floor. But this is IMO important because it's how the speaker will behave in a listening environment. Nice anechoic vertical polars doesn't necessarily lead to an even frequency response placed in the room. We designed this horn with this mind and it's possible we'll only present final vertical measurements this way but in a large space with heigh ceiling height.

The distance here is 2.8m, a typical listening distance for many. We're using a Hypex DLCP and at the moment with no FIR filter. For the final production model, a FIR filter will be used to achieve a linear phase and possible some other improvements.

Let's start with seeing how the horn measures when placing the

**mic at the floor**. 1/6 octave smoothing (all indoor measurement with no gating).

Mic placed 25 cm above floor. 1/6 oct smoothing:

Mic 55 cm above floor. 1/6 oct smoothing:

Mic 85 cm above floor. 1/6 oct smoothing:

Mic 100 cm above floor. Now we're at typical ear height. 1/6 oct smoothing:

Mic 130 cm above floor. 1/6 oct smoothing:

And finally mic placed 160 cm above floor. 1/6 oct smoothing.

Notice that we don't really have any serious vertical lobing here in practise, despite the distance between the two horns and we're using a IIR filter at crossover.

Let's loook at some overlays. I'm showing these with 1/3 oct smoothing which is the normal standard.

Obviously the low frequency changes with height and that's excepted in an acoustical space of this size. We can therefore also look at a graph above 100 Hz:

So this is a measurement above the reflected floor from floor to 160 cm above at 2.8 m distance. And with room influence, though we have some treatment. There's only one absorber at one side wall and three in the ceiling behind the mic where the ceiling is sloping downwards (wouldn't bee needed with a flat ceiling). There are four diffusers and two BAD Arcs (hybrid diffusion/absorption) on the rear wall and some bass traps in the room. I would say this quite unusual for a speaker to measure this even at various height above a reflective floor and with a ceiliing that's also mostly reflective.