Hi all,
I am undecided as to which would be the 'better' choice to take for my dipole line array project.
I have a pair of Mundorf AMT17D2.1 dipole tweeters on the way. They are small and meant to have great extended treble performance.
In my head, I was thinking of mounting it in-between a pair of Bohlender Graebener RD40 planar drivers (in a sort of MTM style config).
As the RD40 is about 1m high, the mundorf will be at ear level which is a good thing. My concern is that due to the dimensions of the RD panels, there will be a gap of 6-8cm between the bottom RD40 panel and the mundorf tweeter and then another 6-8cm to the top RD40 panel.
Will the gaps end up having posibility of cancelling out the the benefits of wanting to go for a line array design?
Would going for the bigger RD75 (~2m length) panel with the mundorf tweeter mounted to the side at ear level be the more preferred choice?
Any advice appreciated.
Cheers
I am undecided as to which would be the 'better' choice to take for my dipole line array project.
I have a pair of Mundorf AMT17D2.1 dipole tweeters on the way. They are small and meant to have great extended treble performance.
In my head, I was thinking of mounting it in-between a pair of Bohlender Graebener RD40 planar drivers (in a sort of MTM style config).
As the RD40 is about 1m high, the mundorf will be at ear level which is a good thing. My concern is that due to the dimensions of the RD panels, there will be a gap of 6-8cm between the bottom RD40 panel and the mundorf tweeter and then another 6-8cm to the top RD40 panel.
Will the gaps end up having posibility of cancelling out the the benefits of wanting to go for a line array design?
Would going for the bigger RD75 (~2m length) panel with the mundorf tweeter mounted to the side at ear level be the more preferred choice?
Any advice appreciated.
Cheers
Hi Tuyen,
same idea floates in my head, since I saw an Infinity RS1 for sale.
There, the tweeters are beside the midrange array.
About placing the Mundorf between two planars: I guess you'll be on the safe side, if the wavelength at the crossover frequence doesn't exceed the 6-8 cm distance.
3 kHz is about 11 cm, so assuming 8 cm, the crossover point could be arround 4 kHz.
But maybe it's neglectable.
The same is valid, if you place the tweeter beside the midrange array; minimizing lobbing by keeping an eye on the wavelength.
I guess the side by side solution is better, because you'll be able to use more tweeters, so you are not so restricted in high, whenn you listen to it.
All the above mentioned aspects, are just based on the facts, I've read somewhere, means I didn't build such an array.
Regards
Olaf
same idea floates in my head, since I saw an Infinity RS1 for sale.
There, the tweeters are beside the midrange array.
About placing the Mundorf between two planars: I guess you'll be on the safe side, if the wavelength at the crossover frequence doesn't exceed the 6-8 cm distance.
3 kHz is about 11 cm, so assuming 8 cm, the crossover point could be arround 4 kHz.
But maybe it's neglectable.
The same is valid, if you place the tweeter beside the midrange array; minimizing lobbing by keeping an eye on the wavelength.
I guess the side by side solution is better, because you'll be able to use more tweeters, so you are not so restricted in high, whenn you listen to it.
All the above mentioned aspects, are just based on the facts, I've read somewhere, means I didn't build such an array.
Regards
Olaf
Go for one RD75 instead of two RD40. Less expensive and no discontinuities in the line array. Mundorf may not be needed, just install recommended RLC notch filter for the RD75.
Discontinuities in the line length is only cosmetical, as long as the gap is shorter than the shortest wavelength, the BG's have to deliver.
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Well I was actually thinking of only using the Mundorf to only fill in the high high frequencies ie. >10khz. The wavelength would be very small in which case. Thus as mentioned, probably better choice for going with the RD75 panel and if desired, mount the mundorf tweeter on the side at ear height.
I haven't heard the RD series panels myself but measurements show that they roll off in the highs. Quite a lot of EQ is required to boost them up. I was hoping to just use the Mundorf to fill the highs in instead.
thanks for your advice so far guys.
I haven't heard the RD series panels myself but measurements show that they roll off in the highs. Quite a lot of EQ is required to boost them up. I was hoping to just use the Mundorf to fill the highs in instead.
thanks for your advice so far guys.
I have the RD50's in combination with a Hypex DLCP. Added some eq at the top end and have no problems with the highs. Just try it first without a extra tweeter.
OK will do ds23man. Thank you 🙂
I'm just weiry after I was told from users of the Beyma TPL-150H AMT driver that treble response is fine. To my ears, it noticeably sounds rolled off and I had to augment the highs with a helper tweeter. So when I see this:
I start to think...
I'm just weiry after I was told from users of the Beyma TPL-150H AMT driver that treble response is fine. To my ears, it noticeably sounds rolled off and I had to augment the highs with a helper tweeter. So when I see this:
I start to think...
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