https://www.ciare.com/prodotto/?codice=HM500
This looks an interesting mid dome, priced around 60 Euros, with an FS of of 550hz and stated usuable range of 700-5,000hz.
Has anyone used or heard it?
This looks an interesting mid dome, priced around 60 Euros, with an FS of of 550hz and stated usuable range of 700-5,000hz.
Has anyone used or heard it?
These guys have some data:
https://dibirama.altervista.org/home-page/mid-range/604-ciare-hm500-mid-range-2-8-ohm-200-wmax.html
I compared the GD of some of the measurements.
https://dibirama.altervista.org/home-page/mid-range/604-ciare-hm500-mid-range-2-8-ohm-200-wmax.html
I compared the GD of some of the measurements.
I think the Morel mid domes are better IMO. The MDM55 sounds very good if the HP filtering is done right.
This Ciare model doesn't have a back chamber and therefore a rather high Q, which hurts performance. It tends to get a bit harsh sounding crossing right at the built in low end rolloff.
If you want a cheap 2" dome alternative, try the $30 Hivi DMB-A.
This Ciare model doesn't have a back chamber and therefore a rather high Q, which hurts performance. It tends to get a bit harsh sounding crossing right at the built in low end rolloff.
If you want a cheap 2" dome alternative, try the $30 Hivi DMB-A.
I don't find them harsh sounding at all. My problem with them is the dip/peak at higher frequencies that I think is caused by internal reflections.
Here's the raw response on baffle:
Here's the raw response on baffle:
Your dip/peak is in the same spot as the GD shift seen in off-axis measurement from dibirama. So it looks like it is in all of them based on a sample of 2. 😛
I imagine a high Q filter and putting 6000hz -10db down with an XO makes it go away?
I should probably clarify my choice of using the word "harsh", which was mainly intended to describe the way the dome sounds when driven harder around its lower resonance range - I'd probably describe it as a honking sound.
The potential rocking motion in a dome driver being played around Fs can generate significant non-linear distortion and can lead to VC rubbing at higher drive levels. Most cone drivers don't have this issue thanks to double suspension. Magnetic fluid can greatly help clean up the performance around Fs and you could also employ LCR impedance linearization, which reduces voltage drop throughout the resonance peak area when used with a passive HP filter. This mainly results in smoother FR around the HP filter slope rolloff. It won't however do much to tighten up the mids transient response or reduce much of the resulting THD.
The potential rocking motion in a dome driver being played around Fs can generate significant non-linear distortion and can lead to VC rubbing at higher drive levels. Most cone drivers don't have this issue thanks to double suspension. Magnetic fluid can greatly help clean up the performance around Fs and you could also employ LCR impedance linearization, which reduces voltage drop throughout the resonance peak area when used with a passive HP filter. This mainly results in smoother FR around the HP filter slope rolloff. It won't however do much to tighten up the mids transient response or reduce much of the resulting THD.