When considering 'neutrality' and 'most natural sounding' in a driver's characteristics one must also take in to account the other drivers that are used with it.
Driver cones made of different materials all have their own characteristic sound so sonic matching is important for the overall presentation of naturalness.
Mixing a metal coned woofer with a 2" - 4" paper midrange may not give you the most desirable oitcome, or the other way round. The tonal differences between the two may or may not be obvious initially but over time it may become tiring or not sound quite right.
It'll also depend on how you work the crossover as the drivers frequency responses over lap at the crossover point. Blending of drivers is an important aspect of loudspeaker design and can be easily overlooked when deciding on what drivers to use.
C.M
Driver cones made of different materials all have their own characteristic sound so sonic matching is important for the overall presentation of naturalness.
Mixing a metal coned woofer with a 2" - 4" paper midrange may not give you the most desirable oitcome, or the other way round. The tonal differences between the two may or may not be obvious initially but over time it may become tiring or not sound quite right.
It'll also depend on how you work the crossover as the drivers frequency responses over lap at the crossover point. Blending of drivers is an important aspect of loudspeaker design and can be easily overlooked when deciding on what drivers to use.
C.M
Not available for DIY, but maybe useful for a point of reference: for me the two best midrange deliveries came from Yamaha NS-1000 and only in recent years Vivid Audio Giya G1. While the NS-1000s are neutral and very dynamic, the Vivid G1s just seem to go on and on until well beyond tolerable listening levels. In fact, you could end up listening at damagingly loud levels because the normal cues to loudness (distortion/compression) are all but absent.
So, apart from smooth response - which is the first thing to look for - and absence of in-band resonance, the thing that takes you to the next level is low dynamic compression. For this, you might want to include pro drivers, because these are typically designed for low distortion at high operating levels.
So, apart from smooth response - which is the first thing to look for - and absence of in-band resonance, the thing that takes you to the next level is low dynamic compression. For this, you might want to include pro drivers, because these are typically designed for low distortion at high operating levels.
In my humble opinion, a 4 inch driver is too small to properly convey the "mid range".
So, this leads us back to defining the "mid range".
What are the frequencies of music notes?
Simple question, although I will qualify as heard because it's not a midrange driver if you get my drift, Jordan Eikona
Within the confines of a 4 inch driver:
https://www.parts-express.com/pedocs/specs/294-1120-faitalpro-4fe32-4-specifications.pdf
Obviously...this is not enough information to suggest what you want. But you know that. Maybe you do not exactly know what you want.
Price range?
Wattage?
Sensitivity?
If you want something cheap, that FaitalPro is great suggestion (personal experience with these little drivers) or look for Vifa TC9fd-18-8.
There were comments that 2"-4" midrange is too small...well, it all depends. Certainly the midrange covering 100Hz to 500Hz must be bigger, than the midrange covering 500 to 5kHz. Since Porsche has not provided much info, any speculation is pointless. Off course is you select midrange too big, it will start beaming terribly, and you have to bring crossover point with tweeter way low, stressing the tweeter and resulting in higher distortion. That's why there are 4-way speakers. It's all about right compromises.
This is a misconception IMO. There is much more than just the cone/dome material that contributes to the linear and non-linear distortion of a driver. The geometry of the cone/dome is perhaps even more important than the material that it is constructed from.
There is no reason that you can't pair any driver with any another driver. The crossover just needs to be designed properly to level match and implement a crossover point which hides the deficiencies of both drivers as much as possible.
I think a lot of people have constructed false opinions about the 'sound' of cone materials because they replaced x cone material driver with y cone material driver without adjusting the crossover to suit and it sounded like garbage, therefore influencing their opinion that all y cone material drivers are garbage.
I'm using a Tangband TB75-1558SE and it performs very well.
It does have power limitations though.
I cross my TB75 3" dome to 15" metal cone woofers and it works flawlessly.
Clean transition in any regard, be it frequency response, polar pattern or THD.
It does have power limitations though.
I'd second that. It's not about materials, but performance and crossover design.
I cross my TB75 3" dome to 15" metal cone woofers and it works flawlessly.
Clean transition in any regard, be it frequency response, polar pattern or THD.
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