Hi remlab,
Have you not the spl bump above 1500 hz ? Is it flat at 1 m or at listening position ? Any high end missing ? How did you manage the bafle step loss then ?
Thank you
Many thanks
Have you not the spl bump above 1500 hz ? Is it flat at 1 m or at listening position ? Any high end missing ? How did you manage the bafle step loss then ?
Thank you
Many thanks
I am getting the bump on the 10f's at one meter. At the listening seat, not as much. Slightly off axis is the probable reason. once again , please excuse the squished vertical scale. that bump looks small but its actually about 3db
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Many thanks Remlab, I have both 8424 model somewhere on the shelves, I planed a horn but have no skill for diy horns whatever foam or else. What your saying is great because Iplanned a 4.5 k hz passive XO (a little dip in the 2 to 4 k area is what I like. But good news to know you can XO higher 🙂
Noticed also the horn model from Joseph Crowe 🙂
Edit There is also a little1 litter curved box from Visaton that is cheap and should be good filled of felt or any good stuffing....
Noticed also the horn model from Joseph Crowe 🙂
Edit There is also a little1 litter curved box from Visaton that is cheap and should be good filled of felt or any good stuffing....
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If you go high, just make sure you keep the acoustic centers as close together as possible. Three inches on mine. A 3" wavelength is 4.5khz, so I'm good at my 4khz XO point
Thanks remlab.
Joseph Crowe ref was a cd not a horn... I mistaked !
here is the load I talked about for unskilled people as I & that could be pushed to 1l with eavy stuffing in it : AK 10.13 | Visaton
Joseph Crowe ref was a cd not a horn... I mistaked !
here is the load I talked about for unskilled people as I & that could be pushed to 1l with eavy stuffing in it : AK 10.13 | Visaton
That's another thing I should have said that I forgot to disclose. After trying several different crossover points, it simply sounded best at 4khz. That is still pretty high, but not "super tweeter" high. Sorry about any confusion that may have caused.
But I'm on passive XO, nothing active & EQ yet... so more or less what I have planned around 4 K, hey !
Thanks...
Thanks...
About as flat as I can get it without EQ, eight feet away at the listening seat, 1/3 octave smoothing. Had to abandon 8th order for 4th order. It was just to hard to integrate
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thanks for this measurement.
That's pretty good ! This was with the super tweeter ? Don't you like something a little more in the last two octaves ?
That's pretty good ! This was with the super tweeter ? Don't you like something a little more in the last two octaves ?
The REW program with the miniDSP microphone can only measure up to 24khz(48khz sample rate). The tweeter I'm using is almost ruler flat up to 40khz.
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http://www.zaphaudio.com/temp/Vifa_OT19NC00-.25chamfer-FR.gif
This is rear mount with a chamfer, which causes a few bumps in the response up high. It says "Vifa", but it got a name change in the years since this was posted
This is rear mount with a chamfer, which causes a few bumps in the response up high. It says "Vifa", but it got a name change in the years since this was posted
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All of my audio playback equipment has a sample rate of up 96khz, so if I stream 24bit/ 96khz music from(in this case) AmazonHD, it will preserve the data all the way to the output of my speakers. Even if it's not native 24/96 music, it will still get upsampled to 96khz, which at least helps out a little bit