6moons fullrange measurements - Lowther vs. Fostex

[Defo]

http://www.6moons.com/audioreviews/f...rstwatt_3.html

Am I missing something when a 100$ Fostex driver measures so much better then a 1700$ Lowther? Please forgive my ignorance.

[chrisb]

Originally Posted by Defo

http://www.6moons.com/audioreviews/f...rstwatt_3.html

Am I missing something when a 100$ Fostex driver measures so much better then a 1700$ Lowther? Please forgive my ignorance.

well, how about that measurements tell only part of the story

[MJK]

Originally Posted by Defo

http://www.6moons.com/audioreviews/f...rstwatt_3.html

Am I missing something when a 100$ Fostex driver measures so much better then a 1700$ Lowther? Please forgive my ignorance.

If you heard both you would know the difference. Fostex makes a nice driver at a very attractive price, but it does not perform like a Lowther driver (even the lowest priced PM6C).

[planet10]

Originally Posted by Defo

Fostex driver measures so much better then a 1700$ Lowther?

Those are only on-axis (and 1 filtered) FR curve. Toole's new book summarizing 40 years of research shows that that by itself is of little help when it comes to correlation with what people find better.

Toole's metric, which he has shown correlates with blind listening tests, requires 70 FR measures in an anechoic chamber good down to the transition frequency.

Since that is not likely to be possible for any of us diyers we just have to listen, and use the FR measures we do make as a tool.

dave

[norman bates]

True.

I am no longer afraid of a rising response in a full range driver and a fe206e may be in my future.

The highs arn't supported as well 10' away (the larger the driver, the less off axis dispersion as you go up the freq range).

Or you just sit a little off axis.

I remember a comment about the fostex ft17 (perfect looking frq at madisound).
http://www.madisound.com/catalog/PDF...vers/ft17h.pdf

"Well, I was up too late last night Googling for the Fostex FT17 and there are many people recommending it. There were a couple of exceptions though, notably Dick Olsher who tried one with his BassZilla and found it made a spitting noise!" (from diyaudio)

and Olsher saying ft17 lacked resolution............ (can't remember but if forced I may be able to find it).

Yea, a waterfall plot, harmonic distortion, and IM distortion would help decribe a driver better than just a freq response.............

But I agree, those graphs SCARE me !!!!!!!!!!!


Norman

[MisterTwister]

might be a good idea to use a piece of foam in front of driver with rising response.

[Brett]

Originally Posted by Defo

http://www.6moons.com/audioreviews/f...rstwatt_3.html

Am I missing something when a 100$ Fostex driver measures so much better then a 1700$ Lowther? Please forgive my ignorance.

Those are Nelson Pass' measurements with a high output Z amplifier. The article is on the Pass DIY site in full under 'Current source amps and speakers', or something close to that.

[Brian Kingsbury]

Forget about the amps, fr, impedance graphs and w/e... what I want to know is HOW THE HELL does someone get those KleinHorns through the door into their house?!

[CLS]

Read the article.

The horn is assembled by several removable parts.

[Samuel Jayaraj]

Does anyone have similar curves and network specs for the Fostex FE168ESigma drivers? Thanks.