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"Polar Bear" Scoop build

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levyte357 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357 Quote  Post ReplyReply Direct Link To This Post Posted: 13 July 2010 at 1:36pm
Originally posted by pfly pfly wrote:

Waiting for grilles:




Nice pics, Clap

How do they sound?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote pfly Quote  Post ReplyReply Direct Link To This Post Posted: 13 July 2010 at 2:40pm
Well, I really cannot comment on how they sound compared to other scoops as I haven't heard any other than what was in last Notting Hill Carnival (A.S.S was in different league compared to others, missed Aba Shanti I though). I think they really need a bit of EQing around 40-60hz area, that is if I really really want that same "flavour" and warmth as Kayak had with his ASS float. Of course these sound well heavy without EQ too. They are definitely on a par with 1850 horn what it comes to sensitivity. We are driving both with same amplifiers and both are loaded with V18, so easy comparison. We use these for 30-70hz and 1850 from 70 to 120, we may push them to 130 or 140hz at some point just for fun.

What do you consider as large / medium / small chamber in scoops, Lev? These ones have around 60 liter chamber
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Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357 Quote  Post ReplyReply Direct Link To This Post Posted: 13 July 2010 at 3:04pm
Originally posted by pfly pfly wrote:


What do you consider as large / medium / small chamber in scoops, Lev? These ones have around 60 liter chamber


IMHO, would class small chamber as <55L, 55-65L as Medium Chamber, and >65L as large chamber.


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Post Options Post Options   Thanks (0) Thanks(0)   Quote JR.junior Quote  Post ReplyReply Direct Link To This Post Posted: 13 July 2010 at 3:17pm

ASS S118 has around 53L - small chamber. around 60 is medium, around 70 is large. 

To calculate chamber volume, I need inner width (600mm?), distance for inner baffle and throat oppening. 



Edited by JR.junior - 17 March 2016 at 1:43pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote pfly Quote  Post ReplyReply Direct Link To This Post Posted: 13 July 2010 at 3:52pm
JR I've already done that.

Actually 60 liter was with driver. It is 71 liters without driver Embarrassed
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JR.junior Quote  Post ReplyReply Direct Link To This Post Posted: 13 July 2010 at 4:55pm
HR plots? ;)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357 Quote  Post ReplyReply Direct Link To This Post Posted: 13 July 2010 at 5:02pm
Originally posted by pfly pfly wrote:

JR I've already done that.

Actually 60 liter was with driver. It is 71 liters without driver Embarrassed


Driver with larger Vas than V18-1000, would really make use of that larger chamber.

However, would also need min BL=25/Xmax=12,

Think you should try one of these in there... Embarrassed

http://forum.speakerplans.com/2x-18-turbomax-1000-drivers-fane-chassis_topic41060.html
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Post Options Post Options   Thanks (0) Thanks(0)   Quote pfly Quote  Post ReplyReply Direct Link To This Post Posted: 13 July 2010 at 5:41pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JR.junior Quote  Post ReplyReply Direct Link To This Post Posted: 13 July 2010 at 6:04pm
18N860; realy slow dynamik speaker. EPB 62, Qts 0,37 Mms 277g, this is not good horn driver, great for BR..
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Post Options Post Options   Thanks (0) Thanks(0)   Quote pfly Quote  Post ReplyReply Direct Link To This Post Posted: 13 July 2010 at 6:11pm
Just check out what 18N850 does in Hogs Wink
Tony Wilkes tested two with Smithers' Hogs I believe.



...On the other hand you are kind of right, but then again scoop isn't the most typical horn.
My guess is that 18N860 has large enough VAS and just enough of BL to work in there, it sims a bit poorer than V18-1000 though. It would be really interesting to compare 18N850, 18N860 and V18-1000 in my scoop


Edited by pfly - 13 July 2010 at 6:18pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JR.junior Quote  Post ReplyReply Direct Link To This Post Posted: 13 July 2010 at 6:14pm
 I have to, it's much better driver. Embarrassed

Edited by JR.junior - 13 July 2010 at 6:19pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357 Quote  Post ReplyReply Direct Link To This Post Posted: 13 July 2010 at 6:57pm
Sims only tell you half the story, and are often very optimistic.

From 1st hand experience, can tell you Turbomax 1000/Fane 18-1000 sounds better than PD 1850/V18-1000 in all the medium chamber scoops I have heard. They are basically more musical/flatter response. With true Xmax evidenced, by smooth sound, even at high power with plenty of Eq.

The very expensive B&C Neo was a joke compared to the above.

If new/used Neos provided same price performance ratio as Turbomax 1000/Fane 18-1000, would definetly be more interested iin them.

EDIT:Compared to the weight of PD1850, the Turbomax is a Neo. LOL


Edited by levyte357 - 13 July 2010 at 7:00pm
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