Fostex F120A vs FX120 or Alternatives

[Dr. ODD]

HI All
I am planing to build a Projekt with a widerange Unit plus Bass. I dont want to use bigger Chassies because of dispersion. I tried the FE108 Sigma and the FE127 but there is still a bit of "paper Sound" and distorsion which I dont like. Does anybody has listening Experience whith the F120A or FX120 ( they are on my "worth a try" List ) or has anybody other Favorits for this use.


Bernhard

[Dr. ODD]

OK

Does anybody know somebody who knows these Chassies?

[THOR]

Hi Bernhard May I sugest the Jordan JX92S FR speaker with sub ?
I couldnt be happier with mine

[Dr. ODD]

Thank you THOR
I fear a littel that te Jordans have a very low bass whithout electric crossover? it cold cost me SPL max ??
What kind of musik are you listen whith it ?
Bernhard

[navin]

i have been investigating such a combination for a while. the reasons are:

1. I believe every exrta component detract something
2. keep design very simple using only 1st order XO

my design calls for a 7-8" woofer capable of delivering 95db at 2m with a 8-10W amp mated to a wide range unit from 300Hz up capable of the same (95db at 2m with 8-10W).

the amps in intend to use are solid state for bass and tube (el84) for widerange. the Xo will 1st order PLL-XO (passive line level).

actually the jx92 i hear needs a super tweeter so i would suggest the jx53.

from the fostex range i would suggest a FF85k.

the jordan jx53 costs about $120 the FF85K cost about $30.

each of these can then be XOed over to a 7-8" woofer. in the case of jordan the JX125 or JX150. in the case of fostex though I am a bit stumped.

I have looked at the FW208N as one alternate but it costs $160 and it has a very low Qts (0.2) which makes it unsuitable for TL or ML-TL. I am hence stuck looking for a good 7-8" woofer that can work in a 20-22liter box and produce 45hz (-3db). While I have an approximate budget of $70 for the woofer I can strech it if the "right" woofer is found.

my goal is for a TL bass and a open baffle fullrange. also i am hoping my design is flexible enough to incorporate a second fullrange in a vertical array with the 1st if more SPL is required. I know this will lead to comb filtering but this can me compensated by tilting the box a bit backwards.

[Dave Jones]

Originally posted by Dr. ODD
HI All
I am planing to build a Projekt with a widerange Unit plus Bass. I dont want to use bigger Chassies because of dispersion. I tried the FE108 Sigma and the FE127 but there is still a bit of "paper Sound" and distorsion which I dont like. Does anybody has listening Experience whith the F120A or FX120 ( they are on my "worth a try" List ) or has anybody other Favorits for this use.


Bernhard

Before you throw away the Fostex speakers, try painting them with some varnish.

[navin]

have u considered the ff85k

[Dr. ODD]

Hi Thank you
Dave I dont want to throw them away. At the moment I just Punished them being a surround Speaker
Narwin I think the FF85 k is to small for the Speaker I am thinking of.

Bernhard

[joensd]

Not that I have listened to those...
but what about the Visaton B200?
Quite a recommended chassis and at the moment Visaton is planning "tours in germany" where you can borrow the "Solo50" for a while to have a listen to them at home.

As I´m still heavily playing with my Tangbands and am a bit short of time I still haven´t finished my ML-TL with the Gradient W160AL8.
That driver only costs 24€ was featured in HobbyHifi and Klang+Ton and at least one forum member build a speaker with it which he really likes.

http://www.spectrumaudio.de/
I wouldn´t buy it there but you can have a look at quite a few fullrangers including the Gradient.

[planet10]

Originally posted by joensd
what about the Visaton B200?

Excellent, very excellent. High Q, big Vas, means BIG box (or big baffle). Some claim a rising HF... the set i have don't exhibit any such issue.

dave