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EV DH1A users?


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I recently picked up a pair of DH1A and I am very pleased with them. Wondering if there are other users here and if any of you have used notch filters to smooth out the impedance peaks? Does anyone have a factory graph of the impedance on a plane wave tube? I am going to uses a Karlson K-Tube on my DH1A so the plane wave tube response should be good to go with in my situation. thanks for any and all feedback. Best regards Moray James.

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No, I have not - every application of mine has been with active xovers in the system.

Have you seen this?
http://www.fullcompass.com/common/files/17291-dh1a.pdf

Most of the EQ you need is above 5kHz, and even on the (not so great) HP9040 horn the impedance isn't affected much from the plane-wave response.

You could always purchase this guy for $100 and actually measure the impedance on your horn:
http://www.parts-express.com/pe/showdetl.cfm?partnumber=390-806

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  • 1 month later...

a few more questions. First have you been able to compare the 8 and 16 ohm versions of the DH1A? The overall magnitude of the 16 ohm version is lower than the 8 ohm version so I am curious about the sound difference.

Since I am thinking about a two way your comment about the K1132 is very interesting could you elaborate further on the K1132 and do you have a data sheet for it? Thanks a lot for the assistance. Best regards Moray James.

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