why dont you go for a higher sensivity tweeter ? any "normal" 91/92db tweeter should work fine without atenuation of the full range
if you want higher sensivity 94db , even 96db ( check the vifa BC25SC-06/04)
http://www.europe-audio.com/Producten_c.asp?Productgroep_B_ID=676&Productgroep_A_ID=67
http://www.europe-audio.com/Product...p_A_ID=67[/url you can always use a Lpad too
if you want higher sensivity 94db , even 96db ( check the vifa BC25SC-06/04)
http://www.europe-audio.com/Producten_c.asp?Productgroep_B_ID=676&Productgroep_A_ID=67
http://www.europe-audio.com/Product...p_A_ID=67[/url you can always use a Lpad too
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You are looking to add some sparkle to the top end. You can't do anything about increasing the tweeter volume and you shouldn't do anything about decreasing the sensitivity of the FR. Add a 1.5 cap and see how you like it. It costs you but a few dollars to know if you are on the right track if you use NP electrolytic caps.
Cheers.
Cheers.
You are talking about the FE203eSR Limited Edition?
An externally hosted image should be here but it was not working when we last tested it.
If you want to add a tweeter passively, you need to get one that is more efficeit.
The only way you can make an 87 dB tweeter work is to biamp.
The budget option Fostex FT96H Horn Super Tweeter: Madisound Speaker Store
cheapest top mount (they go way up in price from there)
Fostex T90A Top Mount Horn Super Tweeter: Madisound Speaker Store
dave
As Cal implied earlier, the simplest way to taste test a passive add-on like this is a cap in series with the + input to tweeter, the value of which is determined by a formula that includes impedance of both drivers, and the desired XO frequency.
If both drivers were 8ohms (and approx same sensitivity) 1.5mF would give you a point in the region of 13500Hz - to calculate for different frequencies, use an on-line applet such as:
2-Way Crossover Designer / Calculator
From comments by other Ozians, and concept enforced by a package i just put in the postm the internet
dave
Bass reflex could well explain elevated (relative) levels of upper mids on up - I think it's fair to say that if there is any consensus on this class of Fostex driver, it's that they "work best" in some form of BLH - from as simple as BIB to more elaborate manifold designs. As to amps, these drivers are more than efficient enough that a DHT can be very delicious.
Do you have any BIB links. I will search this site for some. I have ordered a KT 120 maybe that is a mistake. Don't know any DHT amps or review on them. In the learning phase with tubes (Well everything for that matter lol ). People speak of 45 sets with the same glow in their eyes. Just looking at planet-10 phase plugs may help the screaming/ beaming.
Cheers
Cheers
T90a
Hi Ginge
I am in Melbourne and have the T90a tweeter from Fostex partnered with teh Fe208e sigma driver. i have horns so a slightly different box configuration than yours, but a very similar driver.
I bought my driver/tweeter from overseas (madisound) 3 years ago because it was significantly cheaper than sourcing a local provider. i have dealt with the local supplier for other fostex items, and they are fine, just more expensive. Postage these days is not a long wait from the US.
In my configuration, I have found the 0.68uF cap in series with the tweeter the best, and I would assume this would meld well with your set up. The 203 would already have more HF than the 208, so you could adjust this to taste. I found the 1.0uF cap a bit bright, and the 1.5uf overblown. The 0.47 was quite ok, but just darker, and less air.
I also run mine with a SET 45 amp which is great, but dont expect big bass or huge dynamics. What it does right is realism, and organics, but not fat bass or huge depth (which some people like).
good luck...Adam
Hi Ginge
I am in Melbourne and have the T90a tweeter from Fostex partnered with teh Fe208e sigma driver. i have horns so a slightly different box configuration than yours, but a very similar driver.
I bought my driver/tweeter from overseas (madisound) 3 years ago because it was significantly cheaper than sourcing a local provider. i have dealt with the local supplier for other fostex items, and they are fine, just more expensive. Postage these days is not a long wait from the US.
In my configuration, I have found the 0.68uF cap in series with the tweeter the best, and I would assume this would meld well with your set up. The 203 would already have more HF than the 208, so you could adjust this to taste. I found the 1.0uF cap a bit bright, and the 1.5uf overblown. The 0.47 was quite ok, but just darker, and less air.
I also run mine with a SET 45 amp which is great, but dont expect big bass or huge dynamics. What it does right is realism, and organics, but not fat bass or huge depth (which some people like).
good luck...Adam
Unfortunately Bib-zilla has not been able to update his site for a while now, but I would be surprised if someone hasn't already executed a BIB for this driver or its close cousins already. Although the enclosure for this size driver won't be physically small, they are a very simple construction - but dimensions are important.
A KT120 might be more power than the 203s require , but unless the particular amp circuit is poorly designed or implemented, there's probably no reason it couldn't sound wonderful.
45 is a deliciously sweet amp (personally far preferable to any 300B I've yet heard), but very limited in output power
I'd suggest you contact Dave via his commercial site e-mail link regarding any possible irreversible treatments to a driver such as the 203.
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