DIY Full Range Single Driver vs Retail Speaker

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Ironman129

Audioholic Intern
In my search for new speakers, I've come across full range drivers, namely Fostex and Audio Nirvana. Supposedly these full range drivers have amazing detail and imagery. Has anyone used or are familiar this these? Will I get better sound reproduction making my own cabinet with one of these rather than buying a $3000-$4000 Tower?
 
GranteedEV

GranteedEV

Audioholic Ninja
Supposedly these full range drivers have amazing detail and imagery.
Full range drivers are tricky.

The advantage, is that because there's no crossover, the apparent image source will be more coherent than if there's multiple drivers. That said, crossover designers like our very own TLS Guy and Dennis Murphy will put together sufficiently complex and coherent crossovers anyways.

The other advantage, is that because there's one driver with a fixed diameter, its shift from omni at Low Frequencies to narrow at High Frequencies will be reasonably smooth.

The disadvantages include

- No cone material is pistonic over a wide bandwidth, given a large diaphram. So you basically have to use a non pistonic cone material. That said, this aluminum driver looks pretty good:

http://www.solen.ca/pdf/ejjordan/jx92s.pdf

- A small driver (IE 3" or smaller) will be unable to reproduce lower frequencies at meaningful SPLS. Compromised dynamics are a form of distortion. For nearfield it might be acceptable but otherwise you're out of luck if you want bass. Small drivers will both lack capability to move air, and will also lack efficiency.
-A larger driver (IE 2" or larger) will narrow its directivity so much that it actually begins to beam high frequencies. While some amount of narrowed directivity can be a good thing (as it reduces the intensity of early reflections), full on beaming is generally undesirable because it means a head in a vice sweet spot that may not sound correct.
-Not using a filter could give you a sub-par FR.



Will I get better sound reproduction making my own cabinet with one of these rather than buying a $3000-$4000 Tower?
Considering the many awesome speakers in those price ranges (Philharmonic 2, KEF R700, Salk, Pioneer S3-EX, JBL 6332, Geddes Abbey, and Revel F52) I doubt it. Crossovers are just one necessary evil, and all speakers have their compromises.
 
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Ironman129

Audioholic Intern
So the claims of this company are not only can their drivers produce better sound but when you use an 8", 10", or even 15" full range driver that you wont need a sub as well. my question to them was, if full range single driver are so superior, why are they not mainstream? Why are people still using and building with multiple drivers and crossovers? I find it intriguing but if I will get better SQ from a multi driver tower, then I will continue my search for my new speakers!!! :D
 
GranteedEV

GranteedEV

Audioholic Ninja
So the claims of this company are not only can their drivers produce better sound but when you use an 8", 10", or even 15" full range driver that you wont need a sub as well. my question to them was, if full range single driver are so superior, why are they not mainstream? Why are people still using and building with multiple drivers and crossovers? I find it intriguing but if I will get better SQ from a multi driver tower, then I will continue my search for my new speakers!!! :D
i'd say full range drivers are mainstream - most car / PC / Bose type speakers use 'em. As for sounding better, it's all subjective preference. Some swear by them, like Planet10 HiFi. Others would want no part with 1-way speakers.

I say mess around with a 1-way vented bookshelf using the aformentioned jordan driver and see what you think for yourself. At worst you can use it as part of you PC setup if you feel dissatisfied with the tradeoffs.
 
H

Hocky

Full Audioholic
I have listened to a bunch of big dollar single driver set ups at audio shows and I didn't think any of them were particularly good. Sure, the midrange is nice and it is coherent, but detail is limited and both highs and lows roll off quickly in even the biggest dollar deployments.
 
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