Hi,
I have a pair of SPH-170 drivers and planning to use them for low frequency support of these bookshelf speakers with A7.3 probably up to 150hz.
I prefer to make a sealed enclosure because of the faster transient response and some other considerations. Vented enclosure is also an option if it turns out that the sealed will cover similar low frequency spectrum as the single Alpair drivers.
According to the opinion of a person with a great experience in speaker design and the my following simulations in the WinISD Pro Alpha, the optimal sealed volume according to the linear x-mas of the drivers is 10L.
For the simulations I used a T/S params, measured from K+T, provided by the same person who has designed TL loudspeakers with these drivers and did measuments of several drivers, probably with similar results as the provided. (slightly different from those announced by the manufacturer).
Somwhere in the internet I saw that required sealed volume is 14L, but the linear x-mas looks exceeded at relatively low power according used T/S params for my simulations.
The system will be used mainly for background music and my goal is to achieve optimal balance between sound quallity and bass reproduction.
I'll be happy if someone share personal experience in similar use of these drivers.
Also I'm open for suggestions about the speaker enclosure.
I'm not sure if this the right section. If is not, please accept my apologies and move the topic in the right one.
I have a pair of SPH-170 drivers and planning to use them for low frequency support of these bookshelf speakers with A7.3 probably up to 150hz.
I prefer to make a sealed enclosure because of the faster transient response and some other considerations. Vented enclosure is also an option if it turns out that the sealed will cover similar low frequency spectrum as the single Alpair drivers.
According to the opinion of a person with a great experience in speaker design and the my following simulations in the WinISD Pro Alpha, the optimal sealed volume according to the linear x-mas of the drivers is 10L.
For the simulations I used a T/S params, measured from K+T, provided by the same person who has designed TL loudspeakers with these drivers and did measuments of several drivers, probably with similar results as the provided. (slightly different from those announced by the manufacturer).
Somwhere in the internet I saw that required sealed volume is 14L, but the linear x-mas looks exceeded at relatively low power according used T/S params for my simulations.
The system will be used mainly for background music and my goal is to achieve optimal balance between sound quallity and bass reproduction.
I'll be happy if someone share personal experience in similar use of these drivers.
Also I'm open for suggestions about the speaker enclosure.
I'm not sure if this the right section. If is not, please accept my apologies and move the topic in the right one.
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Ok, in this case you can still achieve a solidly performing driver in both vented and closed cabinet if you can spare the necessary internal volume. Something you will best know once you have tried it out.
My plan is to try sealed enclosure first. I created this topic just for additional information / directions because I don't have big experience in louspeakers design.
At first I thought it would be good to put speakers in a larger closed volume, (for example 25 liters) because of the lower bass, but later I realized that I was not quite on the right track.
At first I thought it would be good to put speakers in a larger closed volume, (for example 25 liters) because of the lower bass, but later I realized that I was not quite on the right track.
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Make a test cabinet a larger one, somewhat larger than Vas value, and also make a provison for a reflex tube, then stuff the reflex to essentially evaluate a sealed cabinet first. Also try to fix the cabinet with a movable panel to try different internal volumes. Placing closer to the walls and corners, you are likely to prefer a sealed cabinet but let that be your decision.
I like the approach with one universal cabinet which can finally be turned to ported or sealed!
I had something similar in mind but only for sealed cabinet, to be able to test differend iternal volumes. But nothing prevents me durring the development to try the sound of vented cabinet 🙂
Sharing ideas is a good thing!
I had something similar in mind but only for sealed cabinet, to be able to test differend iternal volumes. But nothing prevents me durring the development to try the sound of vented cabinet 🙂
Sharing ideas is a good thing!
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