I'm a bit disappointed by the smoothness and the brilliant of the paint...
I still have issues with paintbrush patterns and small dust particles that get glued in the paint during the drying... 😡
I put at least 3/4 coats of thin paint but I can't get it right. 😕
I found thi video : DIY How To Paint Mirror like Finish *Step by Step Using RustOleum Oil Based Paint / Part 1 - YouTube
I will try to apply it on the next speaker that I'm starting to build. 🙂
I still have issues with paintbrush patterns and small dust particles that get glued in the paint during the drying... 😡
I put at least 3/4 coats of thin paint but I can't get it right. 😕
I found thi video : DIY How To Paint Mirror like Finish *Step by Step Using RustOleum Oil Based Paint / Part 1 - YouTube
I will try to apply it on the next speaker that I'm starting to build. 🙂
6 dB filter require that the drivers are flat in impedance and frequency response two octaves on each side of the crossover.
The 4 Ohm bass speaker is 8 Ohm at 300 Hz and 20 Ohm at 1200 Hz so the crossover is anything but 6 dB. Zobel filters are the ting to use for woofer and midrange to flatten the impedance. Using resistors to attenuate mid and high range is common using both serial and parallell resistors. The good thing is that it flattens out the impedance seen by the crossover.
The 4 Ohm bass speaker is 8 Ohm at 300 Hz and 20 Ohm at 1200 Hz so the crossover is anything but 6 dB. Zobel filters are the ting to use for woofer and midrange to flatten the impedance. Using resistors to attenuate mid and high range is common using both serial and parallell resistors. The good thing is that it flattens out the impedance seen by the crossover.
Thanks for the info. 🙂
I agree with you because a small slope of filtering is not enough to compensate for impedance change. So, if the impedance is changing in the same area as the cutoff frequency, the filter's effect which is already very slow (6db/decade), becomes useless.
But my filter is 12db/decade.
Please have a look here. What do you think ?
http://www.diyaudio.com/forums/atta...3-way-project-french-touch-correct_12db_m.jpg
I agree with you because a small slope of filtering is not enough to compensate for impedance change. So, if the impedance is changing in the same area as the cutoff frequency, the filter's effect which is already very slow (6db/decade), becomes useless.
But my filter is 12db/decade.
Please have a look here. What do you think ?
http://www.diyaudio.com/forums/atta...3-way-project-french-touch-correct_12db_m.jpg
Hi,
So, I've just received the drivers and taken some pictures.
- Audax TW025A28
- Davis Acoustics 16GKLV6R (replaces the 16GKLV6M)
- Atohm D300P04
All in all, I've very satisfied with this driver choice.
The Audax very nice and compact, with its gold-plated titanium dome.
The Davis has this unique look, with its fixed cone at the center and its kevlar membrane.
As for the Atohm, it looks less "sophisticated" but much more "powerful", in the end that's not really a problem for a bass driver.
🙂
Here are some pictures.
So, I've just received the drivers and taken some pictures.
- Audax TW025A28
- Davis Acoustics 16GKLV6R (replaces the 16GKLV6M)
- Atohm D300P04
All in all, I've very satisfied with this driver choice.
The Audax very nice and compact, with its gold-plated titanium dome.
The Davis has this unique look, with its fixed cone at the center and its kevlar membrane.
As for the Atohm, it looks less "sophisticated" but much more "powerful", in the end that's not really a problem for a bass driver.
🙂
Here are some pictures.
Attachments
Also, I'm done with one of the speakers (see pictures below).
The other one still needs some paint on the front and back panels.
I tested the sound of the first speaker. 😀
It works very well. 🙂
First impressions are that the tweeter has a very good sensitivity compared to the rest. I might need to remove those resistors that I placed in the medium channel. The medium sounds slightly attenuated. The bass is ok.
The tweeter gave me really a good impression right from the start. It sounds neet and precise and yet not metallical at all.
The medium is good also, precise and a lot of power in reserve. I feel also that it is much less directive than on my old speakers. I can move around and still hear very well the music. The instruments and voices finally sound lound and clear.
The bass requires more power than the others. You can feel that it starts to move when you turn the volume button a bit more. But even though it is less sensitive then the others, you can always here a little bass and it is nice and neet. I like it in fact. It doesn't sound like it's saturating all the time, instead it goes much deeper in the low frequencies than my old speakers.
Let's see how it sounds with both speakers playing.
The other one still needs some paint on the front and back panels.
I tested the sound of the first speaker. 😀
It works very well. 🙂
First impressions are that the tweeter has a very good sensitivity compared to the rest. I might need to remove those resistors that I placed in the medium channel. The medium sounds slightly attenuated. The bass is ok.
The tweeter gave me really a good impression right from the start. It sounds neet and precise and yet not metallical at all.
The medium is good also, precise and a lot of power in reserve. I feel also that it is much less directive than on my old speakers. I can move around and still hear very well the music. The instruments and voices finally sound lound and clear.
The bass requires more power than the others. You can feel that it starts to move when you turn the volume button a bit more. But even though it is less sensitive then the others, you can always here a little bass and it is nice and neet. I like it in fact. It doesn't sound like it's saturating all the time, instead it goes much deeper in the low frequencies than my old speakers.
Let's see how it sounds with both speakers playing.
Attachments
Ok guys, I'm done with my project for now !!
I finished both speakers and now I need some time to listen to them 😀
I talked a little about the sound earlier.
I don't know if it's excellent, acceptable, medium or bad compared to others.
What I know is that is is much better than my previous speakers.
It lacks a little medium maybe.
The main difference with my older speaker is that the sound seems to come from everywhere. It's difficult to locate the speakers when you close your eyes. 🙂
I like the sound, really.
All I want to do now is just listen to all my music and have the pleasure of re-discovering everything 😀 😀
The paint work isn't as smooth and clean as I wanted but I guess it's ok. At least my wife didn't comment on that part... 😛
Ok, have a good evening !
PS : No comment on my living room ! 😛
I finished both speakers and now I need some time to listen to them 😀
I talked a little about the sound earlier.
I don't know if it's excellent, acceptable, medium or bad compared to others.
What I know is that is is much better than my previous speakers.
It lacks a little medium maybe.
The main difference with my older speaker is that the sound seems to come from everywhere. It's difficult to locate the speakers when you close your eyes. 🙂
I like the sound, really.
All I want to do now is just listen to all my music and have the pleasure of re-discovering everything 😀 😀
The paint work isn't as smooth and clean as I wanted but I guess it's ok. At least my wife didn't comment on that part... 😛
Ok, have a good evening !
PS : No comment on my living room ! 😛
Attachments
what height do you sit at to listen
those tweeters look to be anywhere between 1100-1250mm high?
those tweeters look to be anywhere between 1100-1250mm high?
Maybe the tweeter should go below. Here a design just showing that possibility.
GML: Custom 3 Way Speaker Design (Documentation Purpose)
GML: Custom 3 Way Speaker Design (Documentation Purpose)
Hi,
The tweeter is at 1,75m from the ground. 😱
Initially, I chose this position because I often listen to music when I'm moving around in my appartment. It is more or less at ear level when I'm standing.
In the end, I was really surprised how those dome tweeters are not directive at all. Of course when you are in front and look at the speaker it's more powerful, but the difference with other angles is really acceptable. 🙄
The explanation to this, I think, is that the tweeters have a 95dB sensitivity which is superior to the two other drivers.
What I regret now, is not having put the tweeter and the midrange closer to each-other.
At the time where I designed the speaker I didn't know it was better to make them as close as possible.
This is one of the new things I learned thanks to this project 🙂
The tweeter is at 1,75m from the ground. 😱
Initially, I chose this position because I often listen to music when I'm moving around in my appartment. It is more or less at ear level when I'm standing.
In the end, I was really surprised how those dome tweeters are not directive at all. Of course when you are in front and look at the speaker it's more powerful, but the difference with other angles is really acceptable. 🙄
The explanation to this, I think, is that the tweeters have a 95dB sensitivity which is superior to the two other drivers.
What I regret now, is not having put the tweeter and the midrange closer to each-other.
At the time where I designed the speaker I didn't know it was better to make them as close as possible.
This is one of the new things I learned thanks to this project 🙂
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