Click to view attachmentHi Guys.

-Have anyone auditioned these tweeters,are they worth of their price tag???
-where should they mount at
-active or passive set up to reach it's optimal ability
-Amp power to drive them.
Thanks for advice.

Cheers

Why, interested in getting a pair? I have a set...no wait, I actually use them in the car! Though I'm looking to sell them, since I got myself a new set of tweeters to play with....

have you got them in your car?
and if so
is it possible to listen

how are you running them?

They're good, but personally i dont think they are any better than the Morel Supremo (2/3rd the price) or Arvus QCT-1 (1/7th the price) tweeters

the cheaper D2904/710000 has a better f/r graph so id choose that tweeter over the R2904/700000

unfortunately due to the design the dome has a better off axis response than the ring.

I'm running them using active x/overs in a 2 way configuration. The tweeters are moulded into the a-pillars, aimed at the center of the dashboard with a 5 kHz/18db cut-off point. Soundwise, it's OK...but I suppose I could do better by tuning it some more.



Don't you mean that the 710000 has a better off axis response than the 700000? I've heard that as well. But the 710000 hasn't been released yet when I purchased the 700000...

5khz @ 18db/oct???

i would only venture there if you were using a 3inch or smaller dome mid...and even then i would use 12db/oct or even look at 6db/oct

now x-over for the tweeter is more dependant on the mid. If you use carbonfibre, kevlar (any focal mids), titanium, aluminium (any metal) then i would use something like 18 to 24db/oct around the 3khz region give or take 500hz.

paper and plastic (including dyns) tend to be more forgiving with breakup nodes. there for they are more suitable to 6 & 12db/oct slopes.


yes the "D" 710000 has a better f/r 30degrees off axis+++ and is cheaper than the "R" 700000. For the automotive enviroment i would say the 30degree off axis graph is more important in general than the 0degree. This is not home audio we can not sit in the ideal location or place the tweeters in the best spots most of the time. This is why i place more enphasis on the 30degree off axis graph and would choose the "D" 7100000 over the "R" 700000

D = dome
R = ring for scanspeak drivers

let us know what mids you are using then we might suggest a STARTING point for the x-over point. But you will still require proper tuning to get it right.

To be honest..I was amazed with the sound of scanspeak 9700 in my mate's car.. and I should say this scanspeak ring radiator will blow my mind and make me wanna sleep in the car

OK, I'm using Seas Excel 5" magnesium cone mids (code: W15CY001). Can you recommend the appropriate x-over cut-off points for them?

I may be mistaken, but from what I gather one should not rely too much on frequency response graph provided by the manufacturers because the environment that the speakers are gonna be used will affect how they sound. When tested inside an anechoic chamber the speaker driver may exhibit a rising frequency response for example, but upon using it in a car door or placed on the dash its response is considerably altered.

From my own experience, using a lower HP filter on the tweeter made the sound more "telephony-like" and harsh, hence the 5 kHz@18db/oct. Plus, I read it from somewhere that for a-pillar mounted tweeters 5 kHz HP filter is a good starting point, or even 6.3 kHz...ah, I remember now, it was Scott Buwalda who made the suggestion. And you know what? With my equipment, how the tweeters are positioned and aimed, taking into account my sonic preferences.......he's right.

But nevertheless, I am welcome to suggestion on just about anything car audio related so feel free to educate me.

Cheers,

Bon

ah ok

a pillar installs are very tricky

the r2904/700000 would definitely have a massive advantage over its cheaper cousin the d2904/710000. Rolled off 30-60degree ouput would be the only choice.

Yeah that setup now sort of makes sense. But the seas metal 5inch mid isnt the best to go to 5khz. I think in this case a nexcell seas mid would be a much much much better choice.

pitty that the tweeter sounds horrible below 5khz since it really needs to be lower to blend into the metal 5inch midrange unit.

"From my own experience, using a lower HP filter on the tweeter made the sound more "telephony-like" and harsh, hence the 5 kHz@18db/oct. Plus, I read it from somewhere that for a-pillar mounted tweeters 5 kHz HP filter is a good starting point, or even 6.3 kHz...ah, I remember now, it was Scott Buwalda who made the suggestion. And you know what? With my equipment, how the tweeters are positioned and aimed, taking into account my sonic preferences.......he's right"

for the tweeter setup he might be right but to do the same setup with 5-6.3khz x-over a dome mid is the only speaker that will match your tweeter. Even seas has to tame their midranges with the use of 18db/oct slopes and the use of notch filters.

FYI, the LP filter for my Seas is 2.5 kHz@12db/oct. So yes, there is an octave gap between the mid and the tweeter. I thought about lowering it to 2 kHz, but so far it sounds OK. The reason for the gap is to counter frequency response effects caused by the car's interior, so instead of EQ-ing a peak at 3-4 kHz by applying a cut if both drivers have the same cut off point (this had been verified by a friend's RTA) I just made a gap between the two; and that effectively reduces the peak and making the response flatter.

heard both 700000 and 710000
700000 are very good even thought the FR drops early then the 710000 it just blow of ur mind with it smoothest.
710000 are some what tad better in the dispersion ( added sparkel at the top end) but not as smooth as the 700000.
supremo are nowhere near.

just to add i hav owned tweeters hiquphon, maxfidelity , LPG nfa25 , Phd's pro. dyns.