Yes, ported designIs that a vent at the bottom of the cabinet?
Alan, I've never seen a slit like yours used as a bass port of sorts. Can you explain the advantages/disadvantages of having a slit vs standard oval ports for bass reproduction? Is it better SPL, distortion, frequency extension or something else?Yes, ported design
They are pretty common for transmission line style of folded ports.Alan, I've never seen a slit like yours used as a bass port of sorts. Can you explain the advantages/disadvantages of having a slit vs standard oval ports for bass reproduction? Is it better SPL, distortion, frequency extension or something else?
Alan, I've never seen a slit like yours used as a bass port of sorts. Can you explain the advantages/disadvantages of having a slit vs standard oval ports for bass reproduction? Is it better SPL, distortion, frequency extension or something else?
Ok, so it should be lower dB at 20Hz per your specs than is shown by the quasi anechoic measurements. Is adding more woofers a possible option to resolve this issue in the future (and possible improve efficiency) or would the 6dB of room gain make the response flat down to 20Hz?The Aus Hifi measurements are quasi anechoic, so no room gain. Their technique isn't as accurate as a Klippel NFS. They show its only a couple of dB down at 20Hz.
I dont think you will find another speaker in this class, or even vaguely close in price that manges that sort of low frequency extension.
Tweaks to the port would be more aimed at reducing the minor peak at about 50Hz, as this is more audible than anything happening at 20Hz, but this would also have the effect of slightly increasing the output lower down.
Ok, so it should be lower dB at 20Hz per your specs than is shown by the quasi anechoic measurements. Is adding more woofers a possible option to resolve this issue in the future (and possible improve efficiency) or would the 6dB of room gain make the response flat down to 20Hz?
No, the Sointuva only has 1 woofer. The rear devices are passive radiators. They serve the same purpose as a port. We use them in that design because parameters of that woofer would require a very long port that is difficult to fit in that size of cabinet.This speaker only has 1 woofer but the Sointuva bookshelf has 3 for almost similar frequency response. With added room gain, these frequency responses should be almost identical. Is this a fair assessment?
When you wrote that Aus HiFi measurement technique was not as accurate as the Klippel NFS, I assumed their measured FR plots were not accurate , that their -2dB @20Hz measurement was not as accurate. Your specs say it's 10dB down (F10?) at 22Hz.There is no issue. Why are you concerned about -2dB at 20Hz? Which would be more than compensated for by room gain. Most speakers dont manage that level of flatness in their main frequency range.
You can add more woofers. That will make it more expensive. Is there any need? Does the market want it?
Well, more is better (typical American psychology)There is no issue. Why are you concerned about -2dB at 20Hz? Which would be more than compensated for by room gain. Most speakers dont manage that level of flatness in their main frequency range.
You can add more woofers. That will make it more expensive. Is there any need? Does the market want it?
We need to revise the published spec , it is very conservative and taken from the initial modelling. Our measurements are closer to the Aus hifi data.When you wrote that Aus HiFi measurement technique was not as accurate as the Klippel NFS, I assumed their measured FR plots were not accurate , that their -2dB @20Hz measurement was not as accurate. Your specs say it's 10dB down (F10?) at 22Hz.
1) Is room gain able to flatten it out to +/- 1dB or better at 20Hz?
2) With such a low frequency extension, is a subwoofer necessary in 2-Channel or MCH setups? I'm not including media (movies) with deep subsonic frequencies?
3) These European monitor speakers, as reviewed in Audioholics, are priced the same as the Ukkonen ($5,900), but definitely not as pretty (as the candy red version) have similar performance. How do you think they compare?
The Sointuva seemed to go plenty loud in your room, and bass was surprisingly “there”.No, the Sointuva only has 1 woofer. The rear devices are passive radiators. They serve the same purpose as a port. We use them in that design because parameters of that woofer would require a very long port that is difficult to fit in that size of cabinet.
The sountuva, whilst having possibly the most extended low frequency response of any speaker of that size, does not go as low as the Ukkonen. Even with room gain. Plus it won't play as loud with more limited woofer displacement at the lower frequencies
It was a small room. Also, if you want to play really deep low frequency bass the woofer excursion starts to become an issue. These are all part of the reasons why the Ukkonen will perform better at the lowest frequenciesThe Sointuva seemed to go plenty loud in your room, and bass was surprisingly “there”.
I don’t now how they need to be played, but my NIOSH app was telling me that the time and level would make for a finite amount of listening.
@SmartOne_2000 how big is the room that you are considering that the speakers would go into?