You can measure the approximate centre of acoustic radiation. With arta and 2-channel impulse meas you get a good idea. Use highest sampling frequency.
BlieSMa T34P-4 paper dome concept-tweeter:
https://hificompass.com/en/news/measurements/bliesma-t34p-4-paper-dome-concept-tweeter
https://hificompass.com/en/news/measurements/bliesma-t34p-4-paper-dome-concept-tweeter
Thanks for a great review, @HiFiCompass. Out of interest, what do you use for DSP corrections when doing your listening tests?
Will you try a passive trap circuit to tame the resonance? It should have benefits in reducing THD of harmonics of the resonance compared to active EQ.
This tweeter should be "bundled" with a fitting passive circuit to get it at least somewhat linear.
But that's not my cup of tea - I will stick with Beryllium 😉
This tweeter should be "bundled" with a fitting passive circuit to get it at least somewhat linear.
But that's not my cup of tea - I will stick with Beryllium 😉
For some reason my work computer has never allowed me to connect to HiFiCompass's site. Can someone post the response plot for this new paper T34? I've actually been wondering about this possibility since they came out with mid. Seems like a cool idea.
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I have to say, I am more in love with the T34A... But with a PEQ of -12 dB at 15k, this paper version might work out well...
So, the P-4 is not doped/coated at all? It reminds me visually of the Philips AD0210/SQ4 pair of 'felted' paper mid domes I have, and those aren't doped either. I honestly feel at least a doping of the tip of the P-4 should be required for best top-octave performance.
Even after correcting for it with a series notch filter?
I wonder what mechanism(s) are at play here.
The BlieSMa T34D-4 Diamond Dome tweeter review:
https://hificompass.com/en/reviews/bliesma-t34d-4-34mm-diamond-dome-tweeter-review
https://hificompass.com/en/reviews/bliesma-t34d-4-34mm-diamond-dome-tweeter-review
Alot of companies use silicone oil to impregnate their speaker cones anf surrounds with. It works very well but it needs the correct carrier material composition to not wick away over time. Many fullrange drivers with one piece cone/surrounds use silicone in the surround unless they coat it with something afterwards.
The measurements of the B&W 1" diamond dome tweeter for BMW cars:
https://hificompass.com/en/speakers...rs-wilkins-65139350327-1-diamond-dome-tweeter
https://hificompass.com/en/speakers...rs-wilkins-65139350327-1-diamond-dome-tweeter
Looks clean and fast, but too much H3 down low. Funny how they tout their new diamond dome as having so much more extension up top. It falls off quickly past 20k. A good Be dome will be better in this area despite the primary HF breakup.
Talking about timber of paper cones, would you consider MW16p more towards "stiffer paper" cone or "softer paper"?
Actually I tempted to coat my MW16p's paper cone surface with Visaton LTS50 (similar to those Seas coated paper cones), and since you talked about different paper cones a lot, I would love to know your opinion first 👍