file Superscooper 18 Discussion/Scoop Design

8 years 7 months ago #12132 by levyte357
Superscooper 18 Discussion/Scoop Design was created by levyte357
Keep getting asked about modding already built Superscooper 18 to work well with PD1850..

Thinking below is one possibility

a) Removing Dogleg (Restrains chamber to 44L)
b) Extending rear baffle
c) Modding throat/horn start

E.g below rough mod of orig drawing,

[attachment=0:21walq5n]<!-- ia0 -->scooper18 mod.JPG<!-- ia0 -->[/attachment:21walq5n]

comments?

\"When in Vegas, do as the vegasians do\".
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8 years 7 months ago #12139 by saul
Replied by saul on topic Superscooper 18 Discussion/Scoop Design
i thought it was remove the dogleg and make thoat a classic 5" gap, .....so i'm told.....

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8 years 7 months ago #12140 by levyte357
Replied by levyte357 on topic Superscooper 18 Discussion/Scoop Design

saul wrote: i thought it was remove the dogleg and make thoat a classic 5" gap, .....so i'm told.....


"Classic gap" :lol:

Throat volume is accurate title.

Throat forms beginning of horn, also dictating compression, and should be compatible with driver qts, Vas.

Different "throat" suits different drivers, and affects cab depth, spl, throw.

Ask Paulus about different scoop throats and resulting different scoop characteristics.

Standard Scooper 18 throat volume is 799cm2, larger than many scoops. The Problem here is chamber volume.

Was "told" ASS RX18 (well known for having tight/small chamber) is approx 65L-70L. The Scooper 18 chamber volume is constrained by dogleg to only 44L !!!! smiley11

Dogleg needs to be removed to alleviate restricted chamber size, however also required is some type of throat estimation that induces decent compression ratio and SPL.

Roll on all the complaints about non uniform horn expansion rates... :lol:

\"When in Vegas, do as the vegasians do\".

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8 years 7 months ago #12142 by nickyburnell
Replied by nickyburnell on topic Superscooper 18 Discussion/Scoop Design
[attachment=0:1rmepl9o]<!-- ia0 -->scooper18%20mod1.jpg<!-- ia0 -->[/attachment:1rmepl9o]
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8 years 7 months ago #12143 by levyte357
Replied by levyte357 on topic Superscooper 18 Discussion/Scoop Design
@Nick,

Removing dogleg will already release sufficient chamber volume.

The remaining problem is to re-engineer "sufficient" compression ratio, to maintain SPL/Throw.

\"When in Vegas, do as the vegasians do\".

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8 years 7 months ago #12145 by t.geessounds
Replied by t.geessounds on topic Superscooper 18 Discussion/Scoop Design
might be a silly question but whats the DOGLEG????

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8 years 7 months ago #12147 by saul
Replied by saul on topic Superscooper 18 Discussion/Scoop Design


one of these mate!!

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8 years 7 months ago #12148 by bee
Replied by bee on topic Superscooper 18 Discussion/Scoop Design
:lol:

a dog leg is Something that has a sharp bend, especially something that bends abruptly.......

this part of the original plan......

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8 years 7 months ago #12149 by bee
Replied by bee on topic Superscooper 18 Discussion/Scoop Design
what if you made the front baffle longer, and the back of the chamber shorter by 30mm........

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8 years 7 months ago #12150 by t.geessounds
Replied by t.geessounds on topic Superscooper 18 Discussion/Scoop Design
lol Saul :lol:
thanks Bee smiley20

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