Back chamber effect (Oris Horns)

by Don Reid, Rural Northwest Georgia, USA, Friday, March 08, 2013, 04:11 (1746 days ago) @ fu_man

Hi Fu_man,

Sorry to be slow to reply.

Yes the DSP unit I am using is the DEQX HDP-3. It is a digital crossover, phase and time correction, speaker correction, room correction, etc. component. It is a substantial upgrade over the DEQX PDC-2.6 I was initially using.

The bullet tweeters I am using are Fostex T-900a. The minimum crossover frequency Fostex recommends for this driver is 7 kHz. After studying Fostex published frequency response curves for the t900a I decided to not go below 7kHz despite the steep 96dB/8vo rolloffs. One reason for this is that I like things I build to be really reliable and trouble free. No blown tweeters for me. I tried higher nominal crossovers but I liked 7kHz best.

I know that for purists such as Bert and probably most of the members of this forum think using a DSP device such as the DEQX is a sin and a destroyer of good sound. I beg to differ.


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