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Old 8th July 2010, 04:54 PM   #51
PJeff is offline PJeff  Canada
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First, I'm thinking that a front mouth might be a little more flexible for positioning experimentation allowing the cabinet to be closer to the front wall ''if necessary'' cause it's of course not my preferred location.

Secondly, Last night I did a bunch of simulation with different drivers(in WinISD) and the Trio12 looks excellent, quite versatile and great value versus drivers like Dayton RSS and Titanic and several Eminence drivers for exemple. So, so far, I'm leaning towards the Trio12 to be my driver of choice...( impressive lower extension in a vented 115L box tuned to 21Hz) but... I'm a little unsure about the enclosure. The Shadow enclosure seams a little different in design from the Replikon so I do not have much to refer to to figure out how the Shadow enclosure will perform... Lower frequencies extension? Dynamics? Accuracy? And even though I am confident in it's doability, it's not the simplest enclosure for so little info on how it will sound... and lets not forget that I want to build a couple of them.

Any opinion/suggestion to help me ?

PJeff
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Old 9th July 2010, 05:58 PM   #52
PJeff is offline PJeff  Canada
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Quote:
Originally Posted by PJeff View Post
First, I'm thinking that a front mouth might be a little more flexible for positioning experimentation allowing the cabinet to be closer to the front wall ''if necessary'' cause it's of course not my preferred location.

Secondly, ...

Any opinion/suggestion to help me ?

PJeff
Here's a pic to illustrate the first point of my previous post.
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File Type: jpg REAR VS FRONT(small).jpg (90.6 KB, 830 views)
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Old 9th July 2010, 06:55 PM   #53
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You get even more versatility by doing mirror pairs of the 1st one with side firing mouths.

dave
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Old 9th July 2010, 08:15 PM   #54
PJeff is offline PJeff  Canada
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Quote:
Originally Posted by planet10 View Post
You get even more versatility by doing mirror pairs of the 1st one with side firing mouths.

dave
I will play around with that idea... thanks!

PJeff
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Old 9th July 2010, 08:34 PM   #55
PJeff is offline PJeff  Canada
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Originally Posted by planet10 View Post
I have no direct experience, so no. It should give good, deep, controlled bass. On course room positioning is critical. Usually not the same place as the mains.

Floyd Toole and Sean Olive have a number of downloadable papers on the subject, but even all of those don't cover things as well as Floyd's book.

dave
As a newbie, I think I just need a little confidence boost with this project here... I'm asking you cause you guys have a lot more hands on experience than I do.

So, let's start with the basics... do you think the Trio12 is a good value driver choice for what I want to do in it's price range(139$)?
(Reckhorn F-1 stereo to a 100w/8ohm integrated amp driving a couple subs, seeking clear, good transient sound to complement stereo monitors, lower extension 30Hz flat, at least 95dB, for music+movies)

PJeff

Last edited by PJeff; 9th July 2010 at 08:38 PM.
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Old 9th July 2010, 08:57 PM   #56
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yes, yes, yes... go for it.

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Old 10th July 2010, 02:07 AM   #57
tb46 is offline tb46  United States
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Default Simulating PJeff's Shadow variant 1.2

Hi PJeff,

This may be as good a project as any for getting into Hornresp :-). Here is one way this can be simulated in Hornresp. Basically as a back-loaded horn with a large throat chamber, a short coupling section to the straight duct, and a second coupler to the port horn. After hitting calculate you must use the combined response button to see the in-room total, the path length is probably in the neighbourhood of about minus 45cm. You can also use the sliders in the Horn Loudspeaker Wizard to modify the individual dimensions.

Regards,
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File Type: jpg PJeff_Shadow_Variant_1.2_In_dwg.jpg (42.6 KB, 790 views)
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Old 13th July 2010, 06:49 PM   #58
PJeff is offline PJeff  Canada
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Quote:
Originally Posted by planet10 View Post
yes, yes, yes... go for it.

dave
Thank you for the words of encouragement Dave... my mind is set on the Trio12... just need to decide on the enclose now...

PJeff
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Old 13th July 2010, 07:12 PM   #59
PJeff is offline PJeff  Canada
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Quote:
Originally Posted by tb46 View Post
Hi PJeff,

This may be as good a project as any for getting into Hornresp :-). Here is one way this can be simulated in Hornresp. Basically as a back-loaded horn with a large throat chamber, a short coupling section to the straight duct, and a second coupler to the port horn. After hitting calculate you must use the combined response button to see the in-room total, the path length is probably in the neighbourhood of about minus 45cm. You can also use the sliders in the Horn Loudspeaker Wizard to modify the individual dimensions.

Regards,
Thank you for this tb46,
I've played around with that and what i've noticed, with my limited knowledge, is that the extension is somewhat limited in the Shadow enclosure compared to something like a ported 119L box tuned to 20.6Hz(see attachments). Do you see any advantage the Shadow has in other areas? Dave any thoughts?

I need help here!!!!

How can I get the cleanest reproduction and best transient with a decent lower extension with a stereo installation(two seperate enclosures) with the Trio12(flat to 30Hz in room if possible) without much calibration other than placement?

PJeff
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Old 13th July 2010, 07:14 PM   #60
PJeff is offline PJeff  Canada
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Quote:
Originally Posted by PJeff View Post
Thank you for this tb46,
I've played around with that and what i've noticed, with my limited knowledge, is that the extension is somewhat limited in the Shadow enclosure compared to something like a ported 119L box tuned to 20.6Hz(see attachments). Do you see any advantage the Shadow has in other areas? Dave any thoughts?

I need help here!!!!

How can I get the cleanest reproduction and best transient with a decent lower extension with a stereo installation(two seperate enclosures) with the Trio12(flat to 30Hz in room if possible) without much calibration other than placement?

PJeff
Sorry, forgot the attachments... Here they are...
Attached Images
File Type: jpg SPL Response-Shadow.jpg (107.5 KB, 767 views)
File Type: jpg SPL Response-Ported119Lat20.6Hz.jpg (101.1 KB, 740 views)
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