Yuli_35 said:
When I used "Quite good" I meant impressively good 🙂
What I also meant is that the Astasia are easy to drive since my medium power amp was not having any problem at all even at high power volume in a relatively large room with high ceiling(chaptel converted in recording studio). I found that the Astasia have impressive dynamics.
Bi-wiring
Just some thoughts...
Have you considered allowing bi-wiring for bi-wiring or bi-amping or even tri-amping?
With a natural wood finish it could also improve even more the look...😎
Just some thoughts...
Have you considered allowing bi-wiring for bi-wiring or bi-amping or even tri-amping?
With a natural wood finish it could also improve even more the look...😎
hi chuk,
😎 .... what else to add .... nothing....
thank you.
Hi Fab,
thanks for the clarification .... you know i'm French and sometimes I miss few things ....
Your point regarding the amplification confirms what I've observed on my side as well as the technical aspects i've already go througth with Daze. a lot of work has been done in order to have an impedance as flat as possible as well as a very flat electrical phase. This combination makes these speakers easy to drive.
regarding the Bi wiring , this can be done very easily... just have to add additional connectors - and solder the Medium+Tweeter filter on one pair of connectors - and solder the Boomer on the other remaining pair of connectors and that's it !
I would say that if you build these loudspeakers and you already have 2amps... then it is really easy to do. Originally in my plans I was thinking about bi-amping ..; but I only have one amp at that time. So ....
Regarding 3 amping .... I'm not certain that I would go in that direction ... If you want to tri amp ... then go on active loudspeakers. From my point of view bi-amping is already an
expensive solution. however it is a good point.
Regarding the look and feel of the loudspeakers, Originally i was planning to have a wood finish : (my first simulation)
but finally Madam Waf ... decided .... (we all have to negociate sometimes... i manage to have new "BIG" loudspeakers, she decided the color of the Loudspeakers 😎 and everybody is happy
Brgds - Gilles.
😎 .... what else to add .... nothing....
thank you.
Hi Fab,
thanks for the clarification .... you know i'm French and sometimes I miss few things ....
Your point regarding the amplification confirms what I've observed on my side as well as the technical aspects i've already go througth with Daze. a lot of work has been done in order to have an impedance as flat as possible as well as a very flat electrical phase. This combination makes these speakers easy to drive.
regarding the Bi wiring , this can be done very easily... just have to add additional connectors - and solder the Medium+Tweeter filter on one pair of connectors - and solder the Boomer on the other remaining pair of connectors and that's it !
I would say that if you build these loudspeakers and you already have 2amps... then it is really easy to do. Originally in my plans I was thinking about bi-amping ..; but I only have one amp at that time. So ....
Regarding 3 amping .... I'm not certain that I would go in that direction ... If you want to tri amp ... then go on active loudspeakers. From my point of view bi-amping is already an
expensive solution. however it is a good point.
Regarding the look and feel of the loudspeakers, Originally i was planning to have a wood finish : (my first simulation)
but finally Madam Waf ... decided .... (we all have to negociate sometimes... i manage to have new "BIG" loudspeakers, she decided the color of the Loudspeakers 😎 and everybody is happy
Brgds - Gilles.
Hi Gilles
Nice sketches. I own MONITOR Audio RS-8 with cherry wood and the look is fantastic (it passes the WAF). I was wondering if you have a plan to design a smaller version of speaker for peoples with a smaller listening room...
Merci
🙂
Nice sketches. I own MONITOR Audio RS-8 with cherry wood and the look is fantastic (it passes the WAF). I was wondering if you have a plan to design a smaller version of speaker for peoples with a smaller listening room...
Merci
🙂
Hi Fab,
In fact Madam was ok with wood finish, but she prefers "piano" black.
On top of that as you mentioned it these loudspeakers are "Big", so the black color helps to "optically slim " these loudspeakers.
A Small Version of these speakers ????
I've no plan at that time, but you can if you want reduce the BR volume down to 40-45 liters (copmpares to the actual 62-65liters), using the CA22 - you can do it . But in that case you will not have the same level in Bass ... As a reminder, troels Gravesen for its PMS Loudspeaker did a cabinet of 40 liters with the CA22. - So it is possible.
Another option could be to use a Ca21, that requires less Volume than the CA22. the filter is exactly the same (slight change in the Med and tweeter level) - Note that I've simulate this filter as I've the CA21 measurement files.
BUT, you have to know that I've done a diffraction study on these speakers, and the position of each speaker has been determine precisely in order to minimize the diffraction - And everything is linked to the shape of the front panel of the loudspeaker.
In Clear .... If you want to reduce the volume with almost no impact on the xover, the unique way to do it is to reduce the depth of the loudspeaker. If you change the height, this will have an impact on the diffraction study I've done. I don't say that it cannot be done, i just say that this will have an impact.
I've just calculated that you could have a 25cm x 25cm x 116cm Loudspeaker with 40 liters. it is better than the actual 25 cm x36cm x 116cm.
If you want something even smaller, then the concept of the Astasia does not fit. ... or you will have to find a speaker requiring less volume, but in that case this is another story.
hope this will help.
Best regards. - Gilles.
In fact Madam was ok with wood finish, but she prefers "piano" black.
On top of that as you mentioned it these loudspeakers are "Big", so the black color helps to "optically slim " these loudspeakers.
A Small Version of these speakers ????
I've no plan at that time, but you can if you want reduce the BR volume down to 40-45 liters (copmpares to the actual 62-65liters), using the CA22 - you can do it . But in that case you will not have the same level in Bass ... As a reminder, troels Gravesen for its PMS Loudspeaker did a cabinet of 40 liters with the CA22. - So it is possible.
Another option could be to use a Ca21, that requires less Volume than the CA22. the filter is exactly the same (slight change in the Med and tweeter level) - Note that I've simulate this filter as I've the CA21 measurement files.
BUT, you have to know that I've done a diffraction study on these speakers, and the position of each speaker has been determine precisely in order to minimize the diffraction - And everything is linked to the shape of the front panel of the loudspeaker.
In Clear .... If you want to reduce the volume with almost no impact on the xover, the unique way to do it is to reduce the depth of the loudspeaker. If you change the height, this will have an impact on the diffraction study I've done. I don't say that it cannot be done, i just say that this will have an impact.
I've just calculated that you could have a 25cm x 25cm x 116cm Loudspeaker with 40 liters. it is better than the actual 25 cm x36cm x 116cm.
If you want something even smaller, then the concept of the Astasia does not fit. ... or you will have to find a speaker requiring less volume, but in that case this is another story.
hope this will help.
Best regards. - Gilles.
I have finished my Astasia 2 weeks ago. They sounds awesome. It's the best DIY speakers I ever ear. You can easily compare them to commercial speakers of $4 to $5K. for the price of $1.2K (CAN).
Thanks a lot Yuli_35 for your fantastic design. You did a great job. I hope more DIY will start an Astasia project to feel the pleasure of earing a sound of high quality.
Here's mine.
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Thanks a lot Yuli_35 for your fantastic design. You did a great job. I hope more DIY will start an Astasia project to feel the pleasure of earing a sound of high quality.
Here's mine.
Astasia 2
Wow
They are simply fantastic!
The finition is impeccable.
What wood did you take?
Can they be bi-wired?
Wow
They are simply fantastic!
The finition is impeccable.
What wood did you take?
Can they be bi-wired?
Re: Astasia 2
I dont know where you are living in Canada but if you are near Montreal you can ear the Astasia. You wont beleive it.
fab said:Wow
They are simply fantastic!
Thanks Fab
The finition is impeccable.
What wood did you take?
It's a red oak veneer
http://www.richelieu.com/produit/detail.php?fr=pgr&no=05489610
Can they be bi-wired?
No. the crossover design dont allow that
I dont know where you are living in Canada but if you are near Montreal you can ear the Astasia. You wont beleive it.
Re: Re: Astasia 2
I want to believe ! in fact I have already heard the Astasia from Denis in the DIY day in Montreal on last March 14th 2009.
Yes I live on the south shore of Montreal. I think I saw your post on http://www.quebecaudio.com/forums/ . I will communicate with you on the other forum.
thanks
johnny52 said:
I want to believe ! in fact I have already heard the Astasia from Denis in the DIY day in Montreal on last March 14th 2009.
Yes I live on the south shore of Montreal. I think I saw your post on http://www.quebecaudio.com/forums/ . I will communicate with you on the other forum.
thanks
Hi
I am really impressed by this project and would like to try it.
Would you post the schematics of the XO so I can start studying it ?
Regards
Ricardo
I am really impressed by this project and would like to try it.
Would you post the schematics of the XO so I can start studying it ?
Regards
Ricardo
Hi Ricardo,
Here a better link for the schematics.
http://audiomania.info/printview.php?t=15271&start=0&sid=912692b2d9105b0d2b67250f2d356f7d
Also you should look here for issues with this project and other ideas related.😎
http://www.diyaudio.com/forums/multi-way/146388-mca15rcy-replacement.html?postid=1863513#post1863513
Hi,
These are the correct links with the correct schematics.
Plan
Xover
SPL
Impedance
Burst decay
CSD waterfall
CSD Sonogram
Now the forum cut the link 😕
These are the correct links with the correct schematics.
Plan
Xover
An externally hosted image should be here but it was not working when we last tested it.
SPL
An externally hosted image should be here but it was not working when we last tested it.
Impedance
An externally hosted image should be here but it was not working when we last tested it.
Burst decay
An externally hosted image should be here but it was not working when we last tested it.
CSD waterfall
An externally hosted image should be here but it was not working when we last tested it.
CSD Sonogram
An externally hosted image should be here but it was not working when we last tested it.
Now the forum cut the link 😕
Here is the revised schematics of the XO after a year of earing and tuning by Denbret. In the red box you have the new value. In blue, above the red box, it is the old value.
I have done those modifications on mine and I assure you that it is a +
Thank you Jerome69 and Johnny52
My pevious experiments with my friend´s OB gave me enough insight to really understand XO schematics 🙂
Now i finally can work on my own speakers where I want to use the Audax mid drivers and the VIFA Vifa XT25TG30-04 tweeters.
It will take a while but I will surelly do it !
My pevious experiments with my friend´s OB gave me enough insight to really understand XO schematics 🙂
Now i finally can work on my own speakers where I want to use the Audax mid drivers and the VIFA Vifa XT25TG30-04 tweeters.
It will take a while but I will surelly do it !
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I just would like to ask that in the end what was the final results of the Astasia project?
I really don't understand why some people didn't like but I think that the Seas MCA15RCY is a very good midrange driver with nice presentation. I also used in a 3-way vintage speaker with good results. Thanks for the info.
Regards,
Karl
I really don't understand why some people didn't like but I think that the Seas MCA15RCY is a very good midrange driver with nice presentation. I also used in a 3-way vintage speaker with good results. Thanks for the info.
Regards,
Karl
Because the perfect speaker (or driver) does not exist, but even if it did, some would not like that perfect speaker due to personal preferences or imperfect listening rooms and so on.
Anyway the MCA15RCY is an excellent midrange driver and maybe the dislikes of the Astasia is not due to the midrange driver but can be that tweeter too, which is more a divisive driver imo.
Yes, exactly you are right and I know...this is a neverending story 🙂
Otherwise I put the MCA15RCY in a Vintage speaker and I got wonderful results, this is an excelent driver with many details. I tune by ear, a frequency curve is just a rough help.
I am looking for a maatching tweeter, the 27TDFC could be a good choice?
Otherwise I put the MCA15RCY in a Vintage speaker and I got wonderful results, this is an excelent driver with many details. I tune by ear, a frequency curve is just a rough help.
I am looking for a maatching tweeter, the 27TDFC could be a good choice?