I've been thinking about improving the polar response, power response, and directivity for my next speaker. Here is what I'm thinking of, can anyone please comment if this works, and if what I'm saying is correct?
So I'm thinking of using a Scanspeak D3004/6020-10 deep chamber tweeter and a Scanspeak 10F/8424G as the midrange. I'm thinking of using a 1700Hz LR4 crossover between the two for the following reasons:
1) The midrange's off axis response starts dropping at above 2000Hz at 60 degrees, by crossing at 1700Hz, the midrange is well below the beaming point which should hopefully result in a very flat power response all the way up to around 5000Hz.
2) The 1/4 wavelength at the crossover frequency is just slightly smaller than the centre to centre spacing between the tweeter and the midrange, which should minimize both vertical and horizontal lobing.
Question: I'm not quite sure about this part. I'm not sure if it is the 1/4 wavelength or the wavelength of the sound wave that I need to watch out for lobing.
Next, I'd like to get better off axis performance on the high end of treble. Would a waveguide do what I want?
It seems Pellegrene Acoustics is no longer in business, so I'm not sure how I can do a waveguide. But what I'm thinking is to get a small waveguide that'll give me controlled directivity above 5000Hz.
Any comments would be greatly appreciated.
So I'm thinking of using a Scanspeak D3004/6020-10 deep chamber tweeter and a Scanspeak 10F/8424G as the midrange. I'm thinking of using a 1700Hz LR4 crossover between the two for the following reasons:
1) The midrange's off axis response starts dropping at above 2000Hz at 60 degrees, by crossing at 1700Hz, the midrange is well below the beaming point which should hopefully result in a very flat power response all the way up to around 5000Hz.
2) The 1/4 wavelength at the crossover frequency is just slightly smaller than the centre to centre spacing between the tweeter and the midrange, which should minimize both vertical and horizontal lobing.
Question: I'm not quite sure about this part. I'm not sure if it is the 1/4 wavelength or the wavelength of the sound wave that I need to watch out for lobing.
Next, I'd like to get better off axis performance on the high end of treble. Would a waveguide do what I want?
It seems Pellegrene Acoustics is no longer in business, so I'm not sure how I can do a waveguide. But what I'm thinking is to get a small waveguide that'll give me controlled directivity above 5000Hz.
Any comments would be greatly appreciated.