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Post by Johnkenn on Sept 4, 2024 13:53:27 GMT -6
Make sure you turn your volume down and follow this link and click the "Drum Only" samples...then there's one called "Natural Room Kit - Roomy." As you slowly pull your volume up, does whatever he hits on beat 3 wildly distort your speaker? www.toontrack.com/product/signature-part-2-ezx/There's some frequency that - for lack of a better term - seems to overload my monitors. It's like an overtone spike so to speak. |
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Post by doubledog on Sept 4, 2024 14:24:36 GMT -6
assuming I got the right one (he's playing a 6/8 feel) and hitting a pretty hard rim shot on beat 4 actually (if we're counting 6/8). I'm just listening on earbuds but it might distort a little on a couple hits, but not horribly for me.
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Post by Johnkenn on Sept 4, 2024 14:31:04 GMT -6
I mean on your monitors...I think I've got some tonal resonance...
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Post by kcatthedog on Sept 5, 2024 2:36:37 GMT -6
Tweeters fail, maybe yours are starting to ?
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ericn
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Balance Engineer
Posts: 16,083 
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Post by ericn on Sept 5, 2024 11:36:17 GMT -6
There are 2 techniques for finding the trouble freq.
1 down load an RTA app for your phone, or sweep a narrow notch with a parametric EQ and see where it disappears.
I’m sure there are a couple of trouble frequencies with the Amphion HF driver waveguide, it’s a compromise with that type of design.
I got my start in speakers by trying to solve similar issues with some inexpensive stage wedges in my youth, the thing with a wave guide or horn is there are three common issues.
The physical resonance of the HF driver, the resonance of the horn and the connection of the driver to the horn.
The driver you can’t do much about. The horn in particular plastic molded or 3D printed tend to have a very annoying resonance, this is why JBL , EV and DDS horns are so thick and heavy. My solution back in the early 80’s was to simply take a hot glue gun and coat the back of the horn, it worked.
As for the horn driver connection, you have to be careful not to over tighten the screws because it’s way to easy to crack a horn. Higher Quality compression drivers designed to be mounted to horns will usually have a built in felt or cork gasket. In fact the mount used in old Altec, UREi & PAS Coaxes is a piece of drilled aluminum with cork glued to it. What we would when we ran into drivers without felt or Cork was to cut a piece of heavy duty felt into a gasket.
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Post by Johnkenn on Sept 5, 2024 12:44:57 GMT -6
There are 2 techniques for finding the trouble freq. 1 down load an RTA app for your phone, or sweep a narrow notch with a parametric EQ and see where it disappears. I’m sure there are a couple of trouble frequencies with the Amphion HF driver waveguide, it’s a compromise with that type of design. I got my start in speakers by trying to solve similar issues with some inexpensive stage wedges in my youth, the thing with a wave guide or horn is there are three common issues. The physical resonance of the HF driver, the resonance of the horn and the connection of the driver to the horn. The driver you can’t do much about. The horn in particular plastic molded or 3D printed tend to have a very annoying resonance, this is why JBL , EV and DDS horns are so thick and heavy. My solution back in the early 80’s was to simply take a hot glue gun and coat the back of the horn, it worked. As for the horn driver connection, you have to be careful not to over tighten the screws because it’s way to easy to crack a horn. Higher Quality compression drivers designed to be mounted to horns will usually have a built in felt or cork gasket. In fact the mount used in old Altec, UREi & PAS Coaxes is a piece of drilled aluminum with cork glued to it. What we would when we ran into drivers without felt or Cork was to cut a piece of heavy duty felt into a gasket. So it’s a speaker thing and not a room thing? |
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ericn
Temp
Balance Engineer
Posts: 16,083
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Post by ericn on Sept 5, 2024 12:54:41 GMT -6
There are 2 techniques for finding the trouble freq. 1 down load an RTA app for your phone, or sweep a narrow notch with a parametric EQ and see where it disappears. I’m sure there are a couple of trouble frequencies with the Amphion HF driver waveguide, it’s a compromise with that type of design. I got my start in speakers by trying to solve similar issues with some inexpensive stage wedges in my youth, the thing with a wave guide or horn is there are three common issues. The physical resonance of the HF driver, the resonance of the horn and the connection of the driver to the horn. The driver you can’t do much about. The horn in particular plastic molded or 3D printed tend to have a very annoying resonance, this is why JBL , EV and DDS horns are so thick and heavy. My solution back in the early 80’s was to simply take a hot glue gun and coat the back of the horn, it worked. As for the horn driver connection, you have to be careful not to over tighten the screws because it’s way to easy to crack a horn. Higher Quality compression drivers designed to be mounted to horns will usually have a built in felt or cork gasket. In fact the mount used in old Altec, UREi & PAS Coaxes is a piece of drilled aluminum with cork glued to it. What we would when we ran into drivers without felt or Cork was to cut a piece of heavy duty felt into a gasket. So it’s a speaker thing and not a room thing? Probably |
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Post by svart on Sept 5, 2024 14:57:41 GMT -6
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Post by the other mark williams on Sept 5, 2024 16:54:04 GMT -6
Make sure you turn your volume down and follow this link and click the "Drum Only" samples...then there's one called "Natural Room Kit - Roomy." As you slowly pull your volume up, does whatever he hits on beat 3 wildly distort your speaker? www.toontrack.com/product/signature-part-2-ezx/There's some frequency that - for lack of a better term - seems to overload my monitors. It's like an overtone spike so to speak. John, do you mean the one labeled: "4/13: Signature EZX -- Part 2 -- Natural Wood Kit -- Roomy"? If so, nothing is poking out over here at my place on any of those hits. Sounds clean. Sounds great, actually. |
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Post by Johnkenn on Sept 5, 2024 18:49:18 GMT -6
Yeah…I think I tried it without the Trinnov and same thing…Not a huge deal…would just be interesting to figure out why it’s doing that.
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Post by wiz on Sept 5, 2024 19:44:25 GMT -6
all good here...
sounds killer
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Post by seawell on Sept 5, 2024 20:24:26 GMT -6
Didn't hear any issues here.
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Post by Johnkenn on Sept 5, 2024 20:54:10 GMT -6
Yeah…uh…me neither
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ericn
Temp
Balance Engineer
Posts: 16,083
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Post by ericn on Sept 5, 2024 21:49:17 GMT -6
Stupid question have you tried that track with the speakers in a different room?
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Post by svart on Sept 6, 2024 8:16:36 GMT -6
what I hear is a resonance. It kinda sounds a little distorted but I don't think it actually is. It's just some kind of weird dissonance.
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Post by jaba on Sept 6, 2024 13:28:49 GMT -6
Sounds good here.
Listening on One18s which I believe you also have IIRC.
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Post by Johnkenn on Sept 6, 2024 13:29:01 GMT -6
It’s something that overloads on my end. Whether it’s a resonance within the monitor or in my room.
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Post by Johnkenn on Sept 6, 2024 15:40:35 GMT -6
Well...it's the Trinnov! I guess it's because of the boosts? I lower the Trinnov output to around -8db to cover for overs, but this just seems to be something inherent with the filters? Interesting.
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Post by WKG on Sept 6, 2024 19:06:40 GMT -6
Not hearing any problems here.
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Post by the other mark williams on Sept 6, 2024 19:09:15 GMT -6
Well...it's the Trinnov! I guess it's because of the boosts? I lower the Trinnov output to around -8db to cover for overs, but this just seems to be something inherent with the filters? Interesting. I was curious if the Trinnov was playing a role. Does the distortion ever go away if you lower the Trinnov even further? How low can you trim it down? Or is it the inputs that are going over? |
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Post by Johnkenn on Sept 6, 2024 20:12:44 GMT -6
Well...it's the Trinnov! I guess it's because of the boosts? I lower the Trinnov output to around -8db to cover for overs, but this just seems to be something inherent with the filters? Interesting. I was curious if the Trinnov was playing a role. Does the distortion ever go away if you lower the Trinnov even further? How low can you trim it down? Or is it the inputs that are going over? Doesn’t seem to be volume related. But it sounds like when you have - say - Sonarworks on and you don’t pull the volume down and it distorts. It’s not very often at all - my guess is it’s always been happening. |
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