Hello!
Well, finally I managed to sort some things out and now
I am on my way to start my so long awaited speaker project.
So there it is:
- Audax HD-3P as a tweeter (no second thoughts about that one)
- Scan-Speak 12M midrange. Well, I am not absoloutely sure
about this driver, neverheless, I cannot anything more suitable
for this application. When U use HD-3P, there is a need for
a midrange that would cope up with frequencies up to 5 KHz
without any problem. I also thought about Audax's own HM100Z0, but realised that SS 12M would be better, more
wideband and more linear. Any suggestions here?
- bass driver...well I must admit that I am at a loss here.
My room is 32 sq meters, 3.7 m high and I would
appreciate both control and impact.
There are some possibilities here, but my first question is:
go for 10" or 12" bass driver? Please bear in mind that I live
in Poland and some of the specialty US drivers are not available
here. My common sense suggest me to go for Visaton TIW 360
12" driver since it uses some of the well-proven technology,
and for the cash offers substantial value (data at www.visaton.de). But maybe I'd be happier with Focal 10" polikevlar or sndwich-W driver (for the same price as Visaton
here in Poland) or other 10" driver like SS, Davis 25GCA?
The most important thing in bass reproduction is for me
achieving a good balance between slam and control married
to a good sense of bass nautralness (low distortion).
And another question - Xover. Well, HD-3P comes with it's own
Xo, it'll need only a 1-2 dB of attenuation, so no problem here.
Scan Speak midrange looks very linear (on paper at least), so
I hope I'll be able to use my favourite 6 dB slopes when I cross
it at 200 and 5000 Hz. Any comments here?
I assume that bass driver would need 12 dB filtering (breakup
at mid frequencies).
I want to keep Xo as simple as possible, avoid L-pads and things
like that since I belive they degrade sound quality.
I am going to order drivers soon and start woodworking next
two weeks, so any comments, suggestions welcome
Thanks!
Spherion
Well, finally I managed to sort some things out and now
I am on my way to start my so long awaited speaker project.
So there it is:
- Audax HD-3P as a tweeter (no second thoughts about that one)
- Scan-Speak 12M midrange. Well, I am not absoloutely sure
about this driver, neverheless, I cannot anything more suitable
for this application. When U use HD-3P, there is a need for
a midrange that would cope up with frequencies up to 5 KHz
without any problem. I also thought about Audax's own HM100Z0, but realised that SS 12M would be better, more
wideband and more linear. Any suggestions here?
- bass driver...well I must admit that I am at a loss here.
My room is 32 sq meters, 3.7 m high and I would
appreciate both control and impact.
There are some possibilities here, but my first question is:
go for 10" or 12" bass driver? Please bear in mind that I live
in Poland and some of the specialty US drivers are not available
here. My common sense suggest me to go for Visaton TIW 360
12" driver since it uses some of the well-proven technology,
and for the cash offers substantial value (data at www.visaton.de). But maybe I'd be happier with Focal 10" polikevlar or sndwich-W driver (for the same price as Visaton
here in Poland) or other 10" driver like SS, Davis 25GCA?
The most important thing in bass reproduction is for me
achieving a good balance between slam and control married
to a good sense of bass nautralness (low distortion).
And another question - Xover. Well, HD-3P comes with it's own
Xo, it'll need only a 1-2 dB of attenuation, so no problem here.
Scan Speak midrange looks very linear (on paper at least), so
I hope I'll be able to use my favourite 6 dB slopes when I cross
it at 200 and 5000 Hz. Any comments here?
I assume that bass driver would need 12 dB filtering (breakup
at mid frequencies).
I want to keep Xo as simple as possible, avoid L-pads and things
like that since I belive they degrade sound quality.
I am going to order drivers soon and start woodworking next
two weeks, so any comments, suggestions welcome
Thanks!
Spherion
I think de SS is a good choice, I only heard the 15M and that one sounds very good. I think a 10" bass-driver is more suitable, because the 12M starts to fall off already at 200hz. Maby you can check those audax 10" HDA cones. Peerless have also very good drivers. (Are those available in Poland?).
Hi Taco,
Well, yes - 12M starts to fall of at 200 Hz but I think there
is a plethora of 12" woofers that could very well cope with
Xo freq. like 200-300 Hz. What do U think?
And don't want HDA cone for bass, paper sounds better
to me, well maybe carbon Davis 25GCA ?
Yes, Peerless is available in Poland, but I think it's not the
same league as the rest (HD-3P, SS 12M).
Greetz
Spherion
Well, yes - 12M starts to fall of at 200 Hz but I think there
is a plethora of 12" woofers that could very well cope with
Xo freq. like 200-300 Hz. What do U think?
And don't want HDA cone for bass, paper sounds better
to me, well maybe carbon Davis 25GCA ?
Yes, Peerless is available in Poland, but I think it's not the
same league as the rest (HD-3P, SS 12M).
Greetz
Spherion
Hello Taco,
I just visited Peerless website and took a look around their
HDS woofers. Definitely, they look interesring, but, well - I thing
I'll need something bigger than 20 cm woofer.
As for SS bass units - theri only woofer that appeals to me is
21W8554 with kevlar membrane. If I had to choose between
21W8555 and Vifa premium line 21 cm bass I'd choose Vifa.
The problem with Thiel drivers is similar (despite completetly
different technology) as with Peerless - no really good
1o" or 12" woofers. Well, yes Peerless has XLS series on
offer - but I DO NOT want a subfoofer driver since I belive
that drives with so low Fs are not fast enough for me...
Eton, yeah - but it's ridiculously expensive, here in Poland...
Well, my first best is at the moment Davis 25 SCA 10 W,
what do U think?
Greetz,
Spherion
I just visited Peerless website and took a look around their
HDS woofers. Definitely, they look interesring, but, well - I thing
I'll need something bigger than 20 cm woofer.
As for SS bass units - theri only woofer that appeals to me is
21W8554 with kevlar membrane. If I had to choose between
21W8555 and Vifa premium line 21 cm bass I'd choose Vifa.
The problem with Thiel drivers is similar (despite completetly
different technology) as with Peerless - no really good
1o" or 12" woofers. Well, yes Peerless has XLS series on
offer - but I DO NOT want a subfoofer driver since I belive
that drives with so low Fs are not fast enough for me...
Eton, yeah - but it's ridiculously expensive, here in Poland...
Well, my first best is at the moment Davis 25 SCA 10 W,
what do U think?
Greetz,
Spherion
Seas magesium cone woofers and mids are great drivers,
but I want to use 6dB slopes in my project and also want
to steer clear from drivers with very obvious end-of-the-spectrum
resonance. In Excel series U need to use special resonance trap,
which, in my opinion, degrades sound quality.
I simply don't want go to for a driver that requires complex Xo.
Greetz,
Spherion
but I want to use 6dB slopes in my project and also want
to steer clear from drivers with very obvious end-of-the-spectrum
resonance. In Excel series U need to use special resonance trap,
which, in my opinion, degrades sound quality.
I simply don't want go to for a driver that requires complex Xo.
Greetz,
Spherion
1st question. How efficient is the Audax tweeter? (audax site is unreachable for me at the moment to check)
midrange. I'd consider the Jordan JX92 or a Fostex FE108 or 168.
bass. i always like to use bass drivers in pairs so that i can load them push-push and eliminate their newtonian effects (in particular on the cabinets), so a pr of 10s (or even 8s) would be suggested.
2nd question: how do you plan on dealing with baffle step loss? A cabinet wide enuff to move the baffle step down to the desired 200 Hz is going to be about a half-metre wide.
dave
midrange. I'd consider the Jordan JX92 or a Fostex FE108 or 168.
bass. i always like to use bass drivers in pairs so that i can load them push-push and eliminate their newtonian effects (in particular on the cabinets), so a pr of 10s (or even 8s) would be suggested.
2nd question: how do you plan on dealing with baffle step loss? A cabinet wide enuff to move the baffle step down to the desired 200 Hz is going to be about a half-metre wide.
dave
Hello Dave,
Well, are these midranges you mentioned really worth considering? Do they seem better to you than SS 12M ?
The problem with Jordan and Fostex is the fact that
there really hard to get here in Poland, and I don't want
to play with customs once again.
To be honest, I have no idea what to do with the baffle step loss,
well maybe cross at 400-500 Hz?
I'll tru to post hd3p data.
Greetz
Adam
Well, are these midranges you mentioned really worth considering? Do they seem better to you than SS 12M ?
The problem with Jordan and Fostex is the fact that
there really hard to get here in Poland, and I don't want
to play with customs once again.
To be honest, I have no idea what to do with the baffle step loss,
well maybe cross at 400-500 Hz?
I'll tru to post hd3p data.
Greetz
Adam
Attachments
Spherion said:
They are actually all full ranges which makes them ideal for mid use with 1st order XOs.
Fostex i can understand -- the 108 has the same sensitivity spec as the Audax, the 168 would be too sensistive. The Jordans are made by Vifa so i thot you might be able to get them -- they are about 89 dB. I haven't heard a lot of SS, but what i have seemed to be a little lifeless.
The Vifa P13s are also worth considering. These have a nice smooth roll-off on the top, and with a budget that could get you the SS you should easily be able to get twice as many of these and solve your baffle step with a bi-pole (or bi-polish 1.5 way mids)
I don't like pushing the XO above about 350, 250 is better, so in any speaker i do that is not bi-polar (inherently no baffle step) i have just decided i'll have to live with 15" wide baffles. When doinf a really low XO you also have to consider the size of the passive parts required. Below 200 Hz i consider active XO a requirement.
dave
It's still difficult for me to transform inches to the metric system. So you need something in the 25 cm range? I never heard Davis, so can't comment on that. I think Focal is your brand if you want so big.
Focal 10W6411
Focal 11K7512
I agree with Spherion on the SS mid-unit, the 15M and 17M are very very good. (Best drivers I have heard in this segment)
Focal 10W6411
Focal 11K7512
I agree with Spherion on the SS mid-unit, the 15M and 17M are very very good. (Best drivers I have heard in this segment)
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