Not exact but close i think... Unfortunately, I am not familiar with making 3D computer models and have measured it in a practical way...tape measure has been photographed as best as possible from the same perspectives.
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One should not forget which amplifiers and music are used in Youtube clips.
You can't draw too many conclusions from these clips. They make it sound more or less the same. If you're lucky, you can make out the degree of detail.
You can't draw too many conclusions from these clips. They make it sound more or less the same. If you're lucky, you can make out the degree of detail.
All the best Wil, at least you will be able to compare your creation with the real one. I agree with you on costs involved to professionally build a cIone and over here, coming close to the real one and so ended up buying the Sibelius instead. My impression on sound is like what you shared🙂
I asked Pearl for some further information about their design but they declined. Possibly something special about their drivers/box design?
@acko, You can consider yourself lucky with original Sibelius speakers! For me the price was too high. Do you have a USB measuring microphone with which you can measure the frequency behavior with REW 1 meter in front of the driver and also just in front of the bass opening. With those 2 measurements we can determine whether our self-built cabinets are tuned in the same way. @Paulus NL has the same question…
Sorry, I don’t have any sound measuring instruments and have to learn about it also, time etc. thanks for the information and guidance - will check. this is what I asked Pearl also for some measurements of the frequency response but they will not reveal 🙁 however they are happy to talk on the phone only which I didn’t follow up …
… forgive my ignorance, whilst measuring equipment is not a problem shouldn’t all related tests be carried out in some anechoic chamber or similar. I have seen speakers carried onto quiet open spaces for these type of tests. Anyone here done something similar with their creations?
Pretty sure that is the accepted practice. 🙂
Or a fancy Klippel nearfield setup like the one Erin uses to test speakers on his youtube channel.
jeff
if you measure with the measuring microphone close to the driver (at 1 meter for example) the influence of the room is minimal. Certainly the measurement in front of the bass pipe is not influenced by the room. If you measure at the listening position you will see what your room does with that flat response that you measured close to the driver. In this way you can determine the optimal positions of the speaker and listening position. Problems of the room also come to the fore. A lot of knowledge is not required to be able to measure. You can download the program REW for free and a USB measuring microphone is not expensive. Videos explain how the program works.
I will have a look if there is free time in future. Right now very busy with other stuff to justify additional work … remain interested though especially how the room measures up🙂
btw, where did you listen to the Sibelius? Wouldn’t it be easier to do these measurements with arrangements closer to where you are
btw, where did you listen to the Sibelius? Wouldn’t it be easier to do these measurements with arrangements closer to where you are
It's a commercial product, not a DIY project, so in fairness it's not exactly in their interests to provide details to other parties.
haha, I listened to the Sibelius at Harley's in Belgium! I don't think he'll welcome me with open arms to come and measure ;-). By the way, Harley is a cool guy and the listening session was very pleasant. If I had had the money for it, I would have ordered the speakers right away! But making a speaker yourself also has its charms!
Excellent work Wil_NL! I was actually looking for something this from others also who have build speakers. and like you said it does not cost much to do. Are there anything like this for Pensils, FHXL etc?
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As I said, there is no big difference between Sibelius and other boxes.
A10.2 goes a little deeper than A10.3.
Depends on how you set the tuning frequency of the box.
From about 100hz, the frequency curve is determined almost exclusively by the driver.
Something that can affect is the width of the box.
A10.2 goes a little deeper than A10.3.
Depends on how you set the tuning frequency of the box.
From about 100hz, the frequency curve is determined almost exclusively by the driver.
Something that can affect is the width of the box.
