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Odd scoop question

Printed From: Speakerplans.com
Category: Plans
Forum Name: Scoops
Forum Description: One scoop or two ;-)
URL: https://forum.speakerplans.com/forum_posts.asp?TID=101292
Printed Date: 29 March 2024 at 5:26am
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com


Topic: Odd scoop question
Posted By: tkroeker
Subject: Odd scoop question
Date Posted: 08 February 2018 at 7:51am
Does anyone have pics or info on how you ran wire? i.e. from the back to the front and screw hardware to the side walls...lol

I know it should be self explanatory but rattle is what I'm concerned about and the logical way just seems so odd.

Just got in 4 Dayton PA465's and Excited

Thanks



Replies:
Posted By: Dub Specialist Sound
Date Posted: 08 February 2018 at 11:13am
Seen/had/built nuff scoops over the years , thick ,thin baggy tight cable, never heard cable rattling tbh

seen ppl use cable clips to pin down cable, drill hole in rear baffle str8 to driver nothing realy to be conserned about


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Musical Roots Reggae Vibration is Life! for music is sound...sound is vibration...vibration is energy... and energy begets life. Therein lies my passion!...MUSIC IS LIFE...


Posted By: tkroeker
Date Posted: 08 February 2018 at 11:17am
Hmmm, drill and straight through instead of zig zag up and down.
Awesome.


Posted By: Dub Specialist Sound
Date Posted: 08 February 2018 at 11:18am
Yes bro, seen it loads of times, 

then it tends to less baggy cable in the front chamber then tbh


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Musical Roots Reggae Vibration is Life! for music is sound...sound is vibration...vibration is energy... and energy begets life. Therein lies my passion!...MUSIC IS LIFE...


Posted By: tkroeker
Date Posted: 08 February 2018 at 11:33am
you rock, Thanks.


Posted By: odc04r
Date Posted: 08 February 2018 at 11:57am
Drill the hole as close to the cable diameter as you can and seal around it well with silicone. Else pressure will find a way (out)


Posted By: sn95
Date Posted: 08 February 2018 at 6:47pm
I hate to be the bearer of bad news but the PA465 is not a good drive especially for a scoop.


Posted By: tkroeker
Date Posted: 09 February 2018 at 4:45am
we'll see lol. They are in the Garage. The math I did seemed pretty good.


Posted By: Hemisphere
Date Posted: 09 February 2018 at 9:47am
Depends what your aim is for the project, really. If you want scoops no matter what and that's your only driver option, go for it but don't expect optimal performance. It's a reflex driver not a horn driver.

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Phase 1: Post on Speakerplans
Phase 2: ?????
Phase 3: https://www.youtube.com/watch?v=3zc4bGkU05o" rel="nofollow - Profit!


Posted By: tkroeker
Date Posted: 09 February 2018 at 10:05am
Bet I got mixed up on what driver I picked... I started with the Omega Pro and the guy thats going to be running them wanted more Xmax and in looking through options.... I was thinking these listed themselves as scoop options but ,, nope. Oh well I will drop them in some reflex and sell them to him lol.


Posted By: tkroeker
Date Posted: 09 February 2018 at 10:41am
So what effect does having a high QES and QTS have.
These are 
QES - .62
QTS - .57




Posted By: odc04r
Date Posted: 09 February 2018 at 9:01pm
Long and short of it, quite a weak motor. Small magnet, low magnetic flux in the gap, not many wire turns in the gap, small voicecoil. You get the idea.


Posted By: sn95
Date Posted: 09 February 2018 at 10:11pm
If you check every in a BR box it calls for a BIG box to get it flat.


Posted By: tkroeker
Date Posted: 10 February 2018 at 7:12am
?


Posted By: levyte357-
Date Posted: 11 February 2018 at 12:23pm
Originally posted by tkroeker tkroeker wrote:

So what effect does having a high QES and QTS have.
These are 
QES - .62
QTS - .57




Those values tell you, you have bought a cheap car bass speaker, for PA use.


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Global Depopulation - Alive and Killing.


Posted By: mobiele eenheid
Date Posted: 11 February 2018 at 12:47pm
Quote So what effect does having a high QES and QTS have.
These are 
QES - .62
QTS - .57
It does tell you the manufacturer had to cut down on the cost of the driver, and now the driver isn't as usable (for a wide variety of designs) as it would have been with a lower Qts. On the plus side it will handle a decent amount of power (they didn't cut back there).

Quote Long and short of it, quite a weak motor. Small magnet, low magnetic flux in the gap, not many wire turns in the gap, small voicecoil

Actually, just based on Qes and Qts, the magnet could still be huge, due to a large Xmax *(many turns) or a different motor topology. The voice coil could still be large as well, a 6" VC driver can still have a high Qes and the current 3.9" VC isn't actually that small.

Johan





Posted By: odc04r
Date Posted: 11 February 2018 at 6:33pm
Originally posted by mobiele eenheid mobiele eenheid wrote:

Quote So what effect does having a high QES and QTS have.
These are 
QES - .62
QTS - .57
It does tell you the manufacturer had to cut down on the cost of the driver, and now the driver isn't as usable (for a wide variety of designs) as it would have been with a lower Qts. On the plus side it will handle a decent amount of power (they didn't cut back there).

Quote Long and short of it, quite a weak motor. Small magnet, low magnetic flux in the gap, not many wire turns in the gap, small voicecoil

Actually, just based on Qes and Qts, the magnet could still be huge, due to a large Xmax *(many turns) or a different motor topology. The voice coil could still be large as well, a 6" VC driver can still have a high Qes and the current 3.9" VC isn't actually that small.

Johan



It was more intended to be a list of a few possible things than them all being true, but yes I agree.  Low electrical damping generally means weak motor though, however that happens.


Posted By: tkroeker
Date Posted: 14 February 2018 at 6:52pm
Good comments. 

I guess the best adds would be until I drop in different drivers, do certain things like...

stay away from XX frequency or.. keep the volume low... stuff like that.



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