Hi all,
I'm thinking of building a center speaker in a D'appolito configuration with a D2905/9700 shielded tweeter and two 15S8530K01 or 18S8535 mid/woofers. It will be a rear bass reflex box with 570x210x300mm.
Which of these mid/woofers do you think would be best for a center speaker ?
The tweeter is the same one used in the Proac CC2, which is one of the best I've heard.
Since I have no knowledge on building the XO, I was thinking on asking Madisound, Northcreek or others to design and assemble it. Do you have any further suggestions on other desgners that might be able to do a good job?
Thank you for your help,
Faberian
I'm thinking of building a center speaker in a D'appolito configuration with a D2905/9700 shielded tweeter and two 15S8530K01 or 18S8535 mid/woofers. It will be a rear bass reflex box with 570x210x300mm.
Which of these mid/woofers do you think would be best for a center speaker ?
The tweeter is the same one used in the Proac CC2, which is one of the best I've heard.
Since I have no knowledge on building the XO, I was thinking on asking Madisound, Northcreek or others to design and assemble it. Do you have any further suggestions on other desgners that might be able to do a good job?
Thank you for your help,
Faberian
I wonder how Planet10's favorite drive would work in a center chn. I am referring to the Jordan. You wouldn't even need a x over, I think
the woofers are sheilded the tweeter would have to be over 6" away from a CRT to avoid distortion. if oyu are using plasma or LCD you dont need to sheild drivers.
the 8530 uses a smaler box. how big a box can you accomodate. if you dont need to sheild then why not the other SS woofers.
the 8530 uses a smaler box. how big a box can you accomodate. if you dont need to sheild then why not the other SS woofers.
Hi!
The 9700 is not shielded, but I was trying to get a replacement tweeter for the Proac CC2 (that uses the 9700) which I believe is shielded. If not, I'll have to consider other options (or ask Northcreek to shield a 9700 for me).
The SS mid/bass woofers I referred are both shielded, so no problem there.
The mid/bass were selected precisely due to the fact that they are shielded, but you do have a point regarding using them with LCD or Plasma.... Nevertheless, I guess it would be better to use shielded drivers. We never know the future and I don't to be limited due to magnetic fields...
I have Sonus Faber Electa Amator 2 as front speakers, which I believe uses modified 8545 drivers. The 8535 are similar, so I probably wont go much wrong in voice matching. The 9700 tweeter is even better than the one used in my Amators. It's sweeter and more adequate for voices. I think it would be great for a center speaker.
My question is: would 2x 18S8535 workout in a center speaker? The 15S revelator are a bit more expensive (and probably better than the 8535), but I'm afraid they wont be able to go down to about 45Hz @ -3dB. The dimentions of the box were defined having the Dynaudio Contour T2.1 in mind. I cannot acomodate the Proac CC2 (or else I would buy one!), but 570x210x300 or 570x210x320 maximum, would be acceptable.
I just got a quote for a XO with these drivers. About $500
... I guess I have to keep searching for a XO or assemble it myself (when and if I can find a reliable schematic...
Faberian
The 9700 is not shielded, but I was trying to get a replacement tweeter for the Proac CC2 (that uses the 9700) which I believe is shielded. If not, I'll have to consider other options (or ask Northcreek to shield a 9700 for me).
The SS mid/bass woofers I referred are both shielded, so no problem there.
The mid/bass were selected precisely due to the fact that they are shielded, but you do have a point regarding using them with LCD or Plasma.... Nevertheless, I guess it would be better to use shielded drivers. We never know the future and I don't to be limited due to magnetic fields...
I have Sonus Faber Electa Amator 2 as front speakers, which I believe uses modified 8545 drivers. The 8535 are similar, so I probably wont go much wrong in voice matching. The 9700 tweeter is even better than the one used in my Amators. It's sweeter and more adequate for voices. I think it would be great for a center speaker.
My question is: would 2x 18S8535 workout in a center speaker? The 15S revelator are a bit more expensive (and probably better than the 8535), but I'm afraid they wont be able to go down to about 45Hz @ -3dB. The dimentions of the box were defined having the Dynaudio Contour T2.1 in mind. I cannot acomodate the Proac CC2 (or else I would buy one!), but 570x210x300 or 570x210x320 maximum, would be acceptable.
I just got a quote for a XO with these drivers. About $500
... I guess I have to keep searching for a XO or assemble it myself (when and if I can find a reliable schematic...Faberian
Hi,
As I know there is no available shielded SS tweeter. You can consider Vifa, Peerless, etc. instead.
Have you seen these plans?
http://audioclone.free.fr/proac2.5center.JPG
http://audioclone.free.fr/cctwo.html
The first one is a center design for the ProAc 2.5 clone, using a shielded SS woofer, and a Vifa tweeter.
The second is a ProAc CC2 clone, but the drivers are not shielded!
I think putting 2 pieces of 18S8535 in such a small box you mentioned (~36L) is far not ideal. But you can quick-check it using any box simulation software you have.
Saci
As I know there is no available shielded SS tweeter. You can consider Vifa, Peerless, etc. instead.
Have you seen these plans?
http://audioclone.free.fr/proac2.5center.JPG
http://audioclone.free.fr/cctwo.html
The first one is a center design for the ProAc 2.5 clone, using a shielded SS woofer, and a Vifa tweeter.
The second is a ProAc CC2 clone, but the drivers are not shielded!
I think putting 2 pieces of 18S8535 in such a small box you mentioned (~36L) is far not ideal. But you can quick-check it using any box simulation software you have.
Saci
I think that the Proac CC2 tweeter is a shielded 9700. If so, that will be the tweeter to get.
As I mentioned before, the dimentions of the box were inspired on Dynaudio's Contour T2.1 center speaker. This speaker also uses 2 x 6.5" drivers, although I realize that the Dynaudio drivers are diferent from SS 18S8535. The CC2 clone is too big for me.
How much bigger do you think the box would have to be to hold 2 x 18S8535?
Do you think that using 2 x 15S8530 could give be 45Hz@ -3dB?
Faberian
As I mentioned before, the dimentions of the box were inspired on Dynaudio's Contour T2.1 center speaker. This speaker also uses 2 x 6.5" drivers, although I realize that the Dynaudio drivers are diferent from SS 18S8535. The CC2 clone is too big for me.
How much bigger do you think the box would have to be to hold 2 x 18S8535?
Do you think that using 2 x 15S8530 could give be 45Hz@ -3dB?
Faberian
1. i have never been a fan of MTM or WTW centers. I prefer W MT W if you need to have a full range center. however given your budget you can use a MTM just dont keep the tweeter between the woofer but slightly above like you see done by B&W et. al.
2. the future will be more and more LCD (even plasma will make way for LCD due to limited life of plasma and better color rendition of LCD esp. blacks) so accordingly sheilded speaker will be not required.
3. the amator uses a 8545 with slight modifications to cone and mag ckt. if i were you and were in this budget i'd get drop the CRT concept and go plasma (much cheaper than LCD today). once you are there you can choose the 8545 as you center speaker woofer.
4. the 8530 is also a great option. it can amek a lot of bass for it's size.
hope this helps.
2. the future will be more and more LCD (even plasma will make way for LCD due to limited life of plasma and better color rendition of LCD esp. blacks) so accordingly sheilded speaker will be not required.
3. the amator uses a 8545 with slight modifications to cone and mag ckt. if i were you and were in this budget i'd get drop the CRT concept and go plasma (much cheaper than LCD today). once you are there you can choose the 8545 as you center speaker woofer.
4. the 8530 is also a great option. it can amek a lot of bass for it's size.
hope this helps.
Thank you so much for your contributions.
1. W TM W is, as you suggest, preferable, but my front speakers are two way and on the other hand MTM or WTW are more of a problem when listening at the sides. At the sweet spot there arent so many problems. Your suggestion for the tweeter is interesting. How much would you say would work well? 1, 2, 3.. cm shift above the center?
3. Do you think the 8535 is much worse than the 8545 used in the Amators?
4. My main problem with the 8530 (besides bass response comparing with the 8535) is that I read somewhere that the revelators are much more dificult to work with (in crossovers) than the 8535, due to resonance problems. A friend of mine even suggested polypropilene drivers (like the CC2) because they're extremely easy to deal with when it comes to designing XO.
I still have all my options opened: 2x 8535/45, 2x 8530 and now even polypropilene drivers.
Faberian
1. W TM W is, as you suggest, preferable, but my front speakers are two way and on the other hand MTM or WTW are more of a problem when listening at the sides. At the sweet spot there arent so many problems. Your suggestion for the tweeter is interesting. How much would you say would work well? 1, 2, 3.. cm shift above the center?
3. Do you think the 8535 is much worse than the 8545 used in the Amators?
4. My main problem with the 8530 (besides bass response comparing with the 8535) is that I read somewhere that the revelators are much more dificult to work with (in crossovers) than the 8535, due to resonance problems. A friend of mine even suggested polypropilene drivers (like the CC2) because they're extremely easy to deal with when it comes to designing XO.
I still have all my options opened: 2x 8535/45, 2x 8530 and now even polypropilene drivers.
Faberian
Have a look at www.euphase.com it might be a solution to a shielded tweeter.
I have not used them yet myself but they seem to be getting good reviews on other parts of the net.
I have not used them yet myself but they seem to be getting good reviews on other parts of the net.
the revelators are more difficult to work with (as is teh 9900 tweeter) but not that much so. somewhere i read a 9900 being used in a series XO. Series XOs are usually used with drivers that are well behaved over a large freq. range.
the 8530 is not too difficult (esp compared to the 8545 or 8546) i would not be overly worried about that after all at your price you can expect close to the best center speaker in the DIY world.
if i were to go WTW I'd mate the 2 W's till the edges touched and fit the tweeter in the area above the 2 W's the box will be a bit higher (about 2-3" higher) to fit the tweeter or you can find a tweeter that does not have a large flange) SS makes some too.
the 8530 is not too difficult (esp compared to the 8545 or 8546) i would not be overly worried about that after all at your price you can expect close to the best center speaker in the DIY world.
if i were to go WTW I'd mate the 2 W's till the edges touched and fit the tweeter in the area above the 2 W's the box will be a bit higher (about 2-3" higher) to fit the tweeter or you can find a tweeter that does not have a large flange) SS makes some too.
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