Before deciding to run the Jordan JX92s full range, 2-way designs were tried with both this tweeter and the HiVi RT1C-A. The Peerless/Jordan combo crossed over at ~1300 Hz measured technically excellent but was a bear to get there and sonically didn't do it for me. Following up on why, a few different simple baffle treatments were measured to see if something was just missed in implementation. Maybe so. The Peerless sends so much energy orthogonal to its axis that even its 1.5 mm front plate 'baffle step' apparently requires careful consideration.
The composite graph below shows the frequency response deviations caused by the different treatments versus a bare tweeter. The big surprise is the felt sheet, a lot of wreckage for an absorbent pad 90 degrees off axis. BBC-style felt looks pretty good. All plots were time windowed to remove the effect of the baffle edge. The only hint about the felt sheet's impact is a significantly increased spike in the Energy Time Curve.
A Jasper Jig is expected today to recess the tweeter for optimal testing. If it improves on its already +-1 dB response, given the very low distortion it may get a second go with the Jordan.
Suggestions welcome or feel free if you want to see some of the other measurements.
The composite graph below shows the frequency response deviations caused by the different treatments versus a bare tweeter. The big surprise is the felt sheet, a lot of wreckage for an absorbent pad 90 degrees off axis. BBC-style felt looks pretty good. All plots were time windowed to remove the effect of the baffle edge. The only hint about the felt sheet's impact is a significantly increased spike in the Energy Time Curve.
A Jasper Jig is expected today to recess the tweeter for optimal testing. If it improves on its already +-1 dB response, given the very low distortion it may get a second go with the Jordan.
Suggestions welcome or feel free if you want to see some of the other measurements.
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I have pain to understand at the time of chineese real estate collapse, why Peereless gave up to sell those drivers to worldwide ressellers for us diyers ?
We had not time to trigger a purchase when they poped up ! So not many people are able to answer... too bad, it seemed to be a clever priced driver for the market -well maybe to huge diameter front plate but for sure a giant killer.
We had not time to trigger a purchase when they poped up ! So not many people are able to answer... too bad, it seemed to be a clever priced driver for the market -well maybe to huge diameter front plate but for sure a giant killer.
I regret not buying a pair of DA32TX00-08 at the same time but enough to meet today's minimum order quantity of 500.
Me too ! Notice how think a chineese company cause thinking the market is about 1.5 billions of countryfellows ! Is that he new fame of 3 zero % of margin traget ????!!!! No loudspeaker brand use them, so 500 units purchase is asking in between professionals suppliers that eat the benefits... What a pity !
The thing with chinese companies is that they are flexible and nothing is written in stone.
If they judged that they will sell more of their drivers to the speaker brands if the transducers could not be purchased by piece, they will try it. If they see they are wrong, they will again allow purchase by piece. That's what is so good about them.
If they judged that they will sell more of their drivers to the speaker brands if the transducers could not be purchased by piece, they will try it. If they see they are wrong, they will again allow purchase by piece. That's what is so good about them.
Following up after (mostly) flush mounting the DA25TX00. The routing was a fraction of a millimeter too shallow. A bit better performance is likely with a perfect flush mount.
The very impressive response, ETC and distortion results are nudging me toward another shot of mating it with the Jordan JX92S, which is equally impressive below 2 kHz.
The very impressive response, ETC and distortion results are nudging me toward another shot of mating it with the Jordan JX92S, which is equally impressive below 2 kHz.
