Heathrow_B_line's Mini Scoops
Printed From: Speakerplans.com
Category: Plans
Forum Name: Scoops
Forum Description: One scoop or two ;-)
URL: https://forum.speakerplans.com/forum_posts.asp?TID=13859
Printed Date: 27 March 2026 at 8:46am Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com
Topic: Heathrow_B_line's Mini Scoops
Posted By: stephenwconcannon
Subject: Heathrow_B_line's Mini Scoops
Date Posted: 14 January 2008 at 8:36pm
Hi i've taken the next 2 days off work to get scoops built, im thinking on building these ;
http://www.prosoundworld.com/index_files/Page8000.htm - http://www.prosoundworld.com/index_files/Page8000.htm
Recommended to me by tweeter box, just wondering has anybody has built this?? loading with v1200s

|
Replies:
Posted By: Jake_Fielder
Date Posted: 14 January 2008 at 8:37pm
|
I dont think anyone has...
I think HBL is working on MK2
|
Posted By: stephenwconcannon
Date Posted: 14 January 2008 at 8:40pm
tweeter box has heard them says they are dynamite i wonder what the reason for MK2 would be if they sound so good
|
Posted By: Jake_Fielder
Date Posted: 14 January 2008 at 8:41pm
|
http://www.speakerplans.com/forum/forum_posts.asp?TID=13677&KW=&PID=128308#128308 - http://www.speakerplans.com/forum/forum_posts.asp?TID=13677&KW=&PID=128308#128308
I really dont know anything about it apart from on this thread /\
Im not really a fan of mini scoops, They all just look like reflex boxes with long ports to me..... But then i cant really coment as i havent heard one!!
Who has one that tweeter box has heard...? anyone off this forum??
|
Posted By: stephenwconcannon
Date Posted: 14 January 2008 at 8:50pm
|
dont have a clue mate he didnt say.. i dont wanna build a cab that hasn't been heard b4 either
|
Posted By: Heathrow_B_line
Date Posted: 14 January 2008 at 9:27pm
|
I have told you many many many times that no one has built it and if you do build it let us all know how it sounds, good or bad. Tweeter box is talking about the shortman mini which retails at £350 for shortman.
Maybe you should try designing your own from winisd or if you are too lazy how about just build a g sub.
------------- Produce a killer sound. Take no prisoners.
|
Posted By: stephenwconcannon
Date Posted: 14 January 2008 at 9:34pm
|
Im not sure how the 1200s would sound in the Gsub, and i dont want to deisgn my own as i do not know enough about it. Ive used the program and dont have time to learn how to use it properly
|
Posted By: Heathrow_B_line
Date Posted: 14 January 2008 at 9:41pm
|
put the 1200 in an x1. i have modeled it in winisd it looks good and very low. but no one knows if the cone will take it. i think it will though but its not my money!
------------- Produce a killer sound. Take no prisoners.
|
Posted By: Heathrow_B_line
Date Posted: 14 January 2008 at 9:48pm
plus EVERYONE is forgetting mircea's planar wave sub which sounds like it would be good for the 1200 as basically the driver is the star in that cab
------------- Produce a killer sound. Take no prisoners.
|
Posted By: stephenwconcannon
Date Posted: 14 January 2008 at 9:54pm
i dont want to have to fork out on dedicated kick bins though the x1 wouldn't go high enough. mircea's planar wave sub ? never even heard of it....
|
Posted By: Heathrow_B_line
Date Posted: 14 January 2008 at 10:02pm
|
then you should search for it, and hear more about it.
heres the design i will probably build... nice and simple
------------- Produce a killer sound. Take no prisoners.
|
Posted By: stephenwconcannon
Date Posted: 14 January 2008 at 10:04pm
|
il build it tomorrow if you think it should work and il keep you updated if you like
|
Posted By: Heathrow_B_line
Date Posted: 14 January 2008 at 10:10pm
http://www.speakerplans.com/forum/forum_posts.asp?TID=4230&KW=planer+wave&PN=1 - http://www.speakerplans.com/forum/forum_posts.asp?TID=4230&KW=planer+wave&PN=1
------------- Produce a killer sound. Take no prisoners.
|
Posted By: stephenwconcannon
Date Posted: 14 January 2008 at 10:19pm
|
no mention of 1200w drivers just 800w
|
Posted By: Tekasis
Date Posted: 14 January 2008 at 10:55pm
stephenwconcannon wrote:
Im not sure how the 1200s would sound in the Gsub |
They sound alright but to me, the B-Line 800's sounded better. What was at the back of my mind was much cheaper lighter drivers in a G-Sub would/could sound better.
As mentioned many times before, the reflex cab for a pair of the v1200's has to bigger than a standard G-Sub for it to perform extremly well.
|
Posted By: stephenwconcannon
Date Posted: 14 January 2008 at 11:15pm
does nobody own 1200s in reflex cabs ? because help is harder to get on here than it seems. Would be great if somewhere there was someone saying "here build this, its not complicated to build and your 1200s would sound great in it"
|
Posted By: ceharden
Date Posted: 14 January 2008 at 11:27pm
Do you want the dimensions for a large reflex box for the V1200's? Would only take me a few minutes to work out?
|
Posted By: Tekasis
Date Posted: 14 January 2008 at 11:44pm
stephenwconcannon wrote:
does nobody own 1200s in reflex cabs ? |
Don't seems like it as the cab would be too big to hump around. Would suit a club install though!
stephenwconcannon wrote:
because help is harder to get on here than it seems. Would be great if somewhere there was someone saying "here build this, its not complicated to build and your 1200s would sound great in it"  |
Maybe you ain't seen this:- http://www.speakerplans.com/forum/forum_posts.asp?TID=9513&PN=3 - http://www.speakerplans.com/forum/forum_posts.asp?TID=9513&PN=3
Give it a read & see what you think!
One of the most important quote from it!
Rog Mogale wrote:
Try doing a sim with the Void V18-1200 in your reflex cabs.
The best double 18" reflex I can come up with is a 520 litre box tuned to 31Hz. This gives a max output at 30Hz of 130dB with 2400 watts in.
Maximum acoustic output at 30Hz is 131.7dB. I used two 200 mm ports 155 mm long and used 2400 watts for the max SPL, Xmax and port velocity calculations. Xmax is not exceeded anywhere above 28Hz, which is very good.
Here are the T/S for the V18-1200
Fs 30Hz
Qms 5.779
Vas 289.5 liters
Cms 0.152 mm/N
Mms 196 g
Rms 6.214 Kg/s
Sd 1158 sq cm
Qts 0.322
Qes 0.341
Re 5.3 ohms
Le 2.49 mH
BL 23.63 Tm
no 2.21 %
SPL 95.6 dB
Xmax 12.95 mm
Xmech 19.43 mm
Pwr 1200 w rms
|
|
Posted By: stephenwconcannon
Date Posted: 14 January 2008 at 11:53pm
that really doesnt mean anything to me sorry im new to this. if im going for reflex then single boxes would suit better. do you have dimensions for that ? or could you help me with it ?
size isnt a prob
|
Posted By: Tekasis
Date Posted: 15 January 2008 at 12:11am
stephenwconcannon wrote:
that really doesnt mean anything to me sorry im new to this. |
Me neither!
stephenwconcannon wrote:
if im going for reflex then single boxes would suit better. |
250L ( http://www.speakerplans.com/forum/forum_posts.asp?TID=10306&KW=litres&PN=5 - http://www.speakerplans.com/forum/forum_posts.asp?TID=10306&KW=litres&PN=5 )
levyte357 wrote:
ceharden wrote:
I stick with my previous suggestion. Build a BIG reflex, about 250L with a BIG port tuned to 35-ish Hz.
Simplest and most likely to work first time. You could end up with a lot of prototypes trying to get a scoop right.
Now I'm not sure about how the cone would hold up..
|
Spot on, exactly what I would say. The V18-1200 is very picky about what it works in, but would definetly work in large reflex with correct tuning.[/QUOTE]
stephenwconcannon wrote:
do you have dimensions for that ? |
Nope! Sorry mate.
[QUOTE=stephenwconcannon]or could you help me with it ?  |
I can't but someone on here hopefully will as soon as they're free!
|
Posted By: Heathrow_B_line
Date Posted: 15 January 2008 at 8:03am
Tekasis wrote:
stephenwconcannon wrote:
Im not sure how the 1200s would sound in the Gsub |
They sound alright but to me, the B-Line 800's sounded better. What was at the back of my mind was much cheaper lighter drivers in a G-Sub would/could sound better.
As mentioned many times before, the reflex cab for a pair of the v1200's has to bigger than a standard G-Sub for it to perform extremly well.
|
your g subs have a reduced internal volume to the plans, so maybe a standard g sub would sound a touch better
------------- Produce a killer sound. Take no prisoners.
|
Posted By: Heathrow_B_line
Date Posted: 15 January 2008 at 8:04am
my honest view on this is if you don't know how to use the v18-1200 why not just sell it and get something more established, like 2 pd186s in a g sub
------------- Produce a killer sound. Take no prisoners.
|
Posted By: levyte357
Date Posted: 15 January 2008 at 8:27am
Heathrow_B_line wrote:
my honest view on this is if you don't know how to use the v18-1200 why not just sell it and get something more established, like 2 pd186s in a g sub |
That really is the best idea, stephen.
I mentioned it couple of times previously, PD186/V18-1000 will give you huge range of proven cabs to choose from.
------------- "Who am I? I'm the guy who does his job.. You must be the other guy".
|
Posted By: Jhodas
Date Posted: 15 January 2008 at 8:38am
levyte357 wrote:
PD186/V18-1000 will give you huge range of proven cabs to choose from. |
But not the same ones!
------------- Until the Lions have their own historians, tales of hunting will always glorify the hunter.
|
Posted By: Jake_Fielder
Date Posted: 15 January 2008 at 8:39am
Rog Mogale wrote:
Try doing a sim with the Void V18-1200 in your reflex cabs.
The best double 18" reflex I can come up with is a 520 litre box tuned to 31Hz. This gives a max output at 30Hz of 130dB with 2400 watts in.
Maximum acoustic output at 30Hz is 131.7dB. I used two 200 mm ports 155 mm long and used 2400 watts for the max SPL, Xmax and port velocity calculations. Xmax is not exceeded anywhere above 28Hz, which is very good.
Here are the T/S for the V18-1200
Fs 30Hz
Qms 5.779
Vas 289.5 liters
Cms 0.152 mm/N
Mms 196 g
Rms 6.214 Kg/s
Sd 1158 sq cm
Qts 0.322
Qes 0.341
Re 5.3 ohms
Le 2.49 mH
BL 23.63 Tm
no 2.21 %
SPL 95.6 dB
Xmax 12.95 mm
Xmech 19.43 mm
Pwr 1200 w rms
|
C'mon man! Half it!!
260 litre box
ONE port 200mm diameter 155mm deep
Thats all you need to know, Just work out the outer dimentions yourself so that you can make it the shape you want. and possibly work out a different port shape.
Or if u dont know how to i'll do it for you. Just ask...
|
Posted By: levyte357
Date Posted: 15 January 2008 at 9:13am
Jake_Fielder wrote:
C'mon man! Half it!!
260 litre box
ONE port 200mm diameter 155mm deep
Thats all you need to know, Just work out the outer dimentions yourself so that you can make it the shape you want. and possibly work out a different port shape.
Or if u dont know how to i'll do it for you. Just ask... |
Think porting needs 2x rectangular shape ports A la bcsub18 design, to avoid large single port issues.
However "in my opinion", I believe putting v18-1200 in anything other than scoops, is a waste of £239.
------------- "Who am I? I'm the guy who does his job.. You must be the other guy".
|
Posted By: tweeter box
Date Posted: 15 January 2008 at 9:27am
stephenwconcannon wrote:
tweeter box has heard them says they are dynamite i wonder what the reason for MK2 would be if they sound so good  |
Actually i recomended building them as they are probably to the closest design to my minis which you requested the plans for!!!!!!
------------- PRECISION SOUND SYSTEM.
Feeding the peoples needs for Roots Music.
Strictly premium grade reggae and dub steppers from the early 70's to present day.
|
Posted By: Jake_Fielder
Date Posted: 15 January 2008 at 9:33am
|
well here goes anyway!!
260ltrs = 260,000,000mm3
volume taken up by port = 4.869 L
Volume taken up by driver =~ 7 L
Total Volume needed = 271.869
=271,869,000 mm3
Next: Decide how tall and wide you want it.... say 800mm tall by 600mm wide....
Divide 271869000 by 800 then 600 and you get 566.4 those are you cabinet dimentions, add 18mm to each side and thats your external dimentions.
Working out for port volume
pi*R2
3.14159*10,000= 31415.9
31415.9*155 = 4869464.5
which = 4.87litres
|
Posted By: Jake_Fielder
Date Posted: 15 January 2008 at 9:36am
Jake_Fielder wrote:
possibly work out a different port shape. |
levyte357 wrote:
Think porting needs 2x rectangular shape ports A la bcsub18 design, to avoid large single port issues.
|
Yeah, thats what I would do - but only because you can make the port act as bracing and it makes it look better... What issues arise from a large single port lev?
|
Posted By: Jake_Fielder
Date Posted: 15 January 2008 at 9:45am
|
If you wanted a different port shape steve:
If the width of the cab is 600mm i'd make three ports at the bottom (or one long port with two 18mm bits of bracing, which ever way you look at it) 56mm high.
so ports are 188mm X 56mm (and the same depth as before - 155mm)
Do people think thats an acceptable size or are they too 'slot shaped'
Working:
Port area required 31416
Width of port 600-18-18 =564
31416/564 = ~56mm
564/3 = 188
so... 188mm X 56mm = 10528 = one port
one port = 10528 X 3 = 31584 (close enough to 31416!)
If you were being picky you'd now need to slightly increase the external dimentions to account for the extra ply because of the port shelf and bracing, but you wouldnt even hear the difference!
|
Posted By: josh
Date Posted: 15 January 2008 at 1:21pm
Heathrow_B_line wrote:
my honest view on this is if you don't know how to use the v18-1200 why not just sell it and get something more established, like 2 pd186s in a g sub |
Heathrow_B_line wrote:
V18-1200 is a beefier version of the PD186, why you telling him to take a step back in performance? |
|
Posted By: Tekasis
Date Posted: 15 January 2008 at 1:21pm
Heathrow_B_line wrote:
your g subs have a reduced internal volume to the plans, so maybe a standard g sub would sound a touch better |
I've always been thinking that since it was being built (7 months ago) - I even asked for some expert advice on the build pics thread.
Even Champion asked too!
Tekasis wrote:
Question for the S/Plans members & the experts like 'Rog & Mykey'
Looking at this G-Sub cab there's approx 16 handles with the majority of them being boxed out. Obviously the cab is going to be heavier than a standard G-Sub.
Do you reckon the internal volume has been affected too much ? Insomnia & I already discussed this. |
[QUOTE=CHAMPION]Do all these handles have an effect on internal volume of the cab ? (Tek work out the LxWxD of the internal boxed handles if there the same multiply with the number of handles, and then minus from the total Volume of the cab).[/QUOTE]
http://www.speakerplans.com/forum/forum_posts.asp?TID=10238&KW=build&PN=6 - http://www.speakerplans.com/forum/forum_posts.asp?TID=10238&KW=build&PN=6
The only way to find out & know, will be to get a standard one built.
|
Posted By: Heathrow_B_line
Date Posted: 15 January 2008 at 1:54pm
josh wrote:
Heathrow_B_line wrote:
my honest view on this is if you don't know how to use the v18-1200 why not just sell it and get something more established, like 2 pd186s in a g sub |
Heathrow_B_line wrote:
V18-1200 is a beefier version of the PD186, why you telling him to take a step back in performance? |
|
make a g sub 1m deep and you have a good box for 2 1200's.
sorry if you thought i was being critical josh, i assumed this member was aware of how to get the best out of this driver.
------------- Produce a killer sound. Take no prisoners.
|
Posted By: Heathrow_B_line
Date Posted: 15 January 2008 at 1:57pm
Tekasis wrote:
Heathrow_B_line wrote:
your g subs have a reduced internal volume to the plans, so maybe a standard g sub would sound a touch better |
I've always been thinking that since it was being built (7 months ago) - I even asked for some expert advice on the build pics thread.
Even Champion asked too!
Tekasis wrote:
Question for the S/Plans members & the experts like 'Rog & Mykey'
Looking at this G-Sub cab there's approx 16 handles with the majority of them being boxed out. Obviously the cab is going to be heavier than a standard G-Sub.
Do you reckon the internal volume has been affected too much ? Insomnia & I already discussed this. |
[QUOTE=CHAMPION]Do all these handles have an effect on internal volume of the cab ? (Tek work out the LxWxD of the internal boxed handles if there the same multiply with the number of handles, and then minus from the total Volume of the cab).[/QUOTE]
http://www.speakerplans.com/forum/forum_posts.asp?TID=10238&KW=build&PN=6 - http://www.speakerplans.com/forum/forum_posts.asp?TID=10238&KW=build&PN=6
The only way to find out & know, will be to get a standard one built.
|
Are you an octopus Teky??? lol It will just tune you box slightly higher instead of a standard g sub. unless you made the port longer to try and get down to the same frequency.
------------- Produce a killer sound. Take no prisoners.
|
Posted By: Heathrow_B_line
Date Posted: 15 January 2008 at 2:01pm
you would only lose about two litres from the internal cab volume so maybe it wouldnt matter
------------- Produce a killer sound. Take no prisoners.
|
Posted By: Tekasis
Date Posted: 15 January 2008 at 2:13pm
Heathrow_B_line wrote:
Are you an octopus Teky??? lol It will just tune you box slightly higher instead of a standard g sub. unless you made the port longer to try and get down to the same frequency. |
 It seems like it.
I wanted it to sound as deep as possible, not to play higher.
Heathrow_B_line wrote:
you would only lose about two litres from the internal cab volume so maybe it wouldnt matter |
Maybe! Still ain't gonna be satisfied until I prove it fo myself!
|
Posted By: Heathrow_B_line
Date Posted: 15 January 2008 at 2:16pm
Yes its cheap to do a comparison. i think it would only cost 2 sheets of mdf to find out. it would def be alot stronger without all those holes though.
------------- Produce a killer sound. Take no prisoners.
|
Posted By: Tekasis
Date Posted: 15 January 2008 at 3:02pm
Heathrow_B_line wrote:
Yes its cheap to do a comparison. i think it would only cost 2 sheets of mdf to find out. it would def be alot stronger without all those holes though. |
Many agree MDF sounds better than ply so that alone would make both cabs sound different anyway as the original is ply!
|
Posted By: josh
Date Posted: 15 January 2008 at 3:40pm
Heathrow_B_line wrote:
josh wrote:
Heathrow_B_line wrote:
my honest view on this is if you don't know how to use the v18-1200 why not just sell it and get something more established, like 2 pd186s in a g sub |
Heathrow_B_line wrote:
V18-1200 is a beefier version of the PD186, why you telling him to take a step back in performance? |
|
make a g sub 1m deep and you have a good box for 2 1200's.
sorry if you thought i was being critical josh, i assumed this member was aware of how to get the best out of this driver. |
dont worry about it i was just being a prick 
|
Posted By: jethrocker
Date Posted: 15 January 2008 at 7:00pm
stephenwconcannon wrote:
does nobody own 1200s in reflex cabs ? because help is harder to get on here than it seems. Would be great if somewhere there was someone saying "here build this, its not complicated to build and your 1200s would sound great in it"
|
I think the problem is that the V1200 is a relatively new driver, and there are not many established well tested designs thaty folks here can report back on. For this reason we'll all be interested in what you finally decide on and how it sounds.. Just seen you're going to put together Levytes modded JBL scoop, good to see another variation being tried, and sure Levyte especially will want to know how she blows.. I suspect you won't be dissapointed, the plan seems to be about what the v1200 was actually designed for.
|
Posted By: tweeter box
Date Posted: 15 January 2008 at 8:12pm
|
HBL they done yet?
------------- PRECISION SOUND SYSTEM.
Feeding the peoples needs for Roots Music.
Strictly premium grade reggae and dub steppers from the early 70's to present day.
|
Posted By: B.P.Sound
Date Posted: 15 January 2008 at 9:25pm
Posted By: B.P.Sound
Date Posted: 15 January 2008 at 9:26pm
|
LOOKS LIKE A MODIFIED WEMBLEY BIN ! ! ! ! ! ! !
|
Posted By: hektik
Date Posted: 06 March 2008 at 11:44am
Posted By: tweeter box
Date Posted: 06 March 2008 at 11:54am
Id b interested in them pics mate
------------- PRECISION SOUND SYSTEM.
Feeding the peoples needs for Roots Music.
Strictly premium grade reggae and dub steppers from the early 70's to present day.
|
Posted By: hektik
Date Posted: 06 March 2008 at 12:01pm
Posted By: hektik
Date Posted: 06 March 2008 at 12:02pm
|
very similar to the b-lines dont ya think
|
Posted By: tweeter box
Date Posted: 06 March 2008 at 12:06pm
Yeah they look nice!
------------- PRECISION SOUND SYSTEM.
Feeding the peoples needs for Roots Music.
Strictly premium grade reggae and dub steppers from the early 70's to present day.
|
Posted By: hektik
Date Posted: 06 March 2008 at 12:06pm
|
only big diffrence is on the b-line theres a panel behind the drive at 200mm ,, mine is more like a scoop at 400mm
|
Posted By: CHAMPION
Date Posted: 06 March 2008 at 6:14pm
|
HBL thats a large chambe , its gona sound like a single Bass note cab !!
4 WEmbleys will sound better then these mini cabs....take one of mines and test them
------------- Sticks n Stones
|
Posted By: Heathrow_B_line
Date Posted: 08 March 2008 at 1:56am
CHAMPION wrote:
HBL thats a large chambe , its gona sound like a single Bass note cab !!
4 WEmbleys will sound better then these mini cabs....take one of mines and test them |
post up the wembley plan
------------- Produce a killer sound. Take no prisoners.
|
Posted By: tweeter box
Date Posted: 11 March 2008 at 5:11pm
Champ are your Wembleys originals??
------------- PRECISION SOUND SYSTEM.
Feeding the peoples needs for Roots Music.
Strictly premium grade reggae and dub steppers from the early 70's to present day.
|
Posted By: CHAMPION
Date Posted: 11 March 2008 at 7:10pm
based on the orignals, but beeft up !
------------- Sticks n Stones
|
Posted By: tweeter box
Date Posted: 11 March 2008 at 7:18pm
kool, might have 2 pop round one weekend n check them out
------------- PRECISION SOUND SYSTEM.
Feeding the peoples needs for Roots Music.
Strictly premium grade reggae and dub steppers from the early 70's to present day.
|
|