Speakerplans.com Homepage
Forum Home Forum Home > Plans > Other plans
  New Posts New Posts RSS Feed - Super Bass Horn V.02 by Startec (Quad Acoustics-F)
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Super Bass Horn V.02 by Startec (Quad Acoustics-F)

 Post Reply Post Reply Page  <1 23456 46>
Author
Message Reverse Sort Order
 Rating: Topic Rating: 1 Votes, Average 5.00  Topic Search Topic Search  Topic Options Topic Options
Toss Out View Drop Down
Registered User
Registered User
Avatar

Joined: 28 November 2021
Status: Offline
Points: 22
Post Options Post Options   Thanks (0) Thanks(0)   Quote Toss Out Quote  Post ReplyReply Direct Link To This Post Posted: 28 November 2021 at 12:23pm
Thank you..I think the same..hoping this until i will found it hahaha at least i change with 18"..sbh cabinet is my favourite with cerwin vega l36..thank you again!
Back to Top
skankinmoe View Drop Down
New Member
New Member


Joined: 23 February 2020
Status: Offline
Points: 9
Post Options Post Options   Thanks (0) Thanks(0)   Quote skankinmoe Quote  Post ReplyReply Direct Link To This Post Posted: 28 November 2021 at 11:56am
@Toss Out
This enclosure was designed around the RCF LF18N401.
I doubt that there is a 21" version.
but for 21" there are other folded horn designs which are already proven.
https://www.speakerplans.com/index.php?id=21superscooper


Edited by skankinmoe - 28 November 2021 at 11:57am
Back to Top
Toss Out View Drop Down
Registered User
Registered User
Avatar

Joined: 28 November 2021
Status: Offline
Points: 22
Post Options Post Options   Thanks (0) Thanks(0)   Quote Toss Out Quote  Post ReplyReply Direct Link To This Post Posted: 28 November 2021 at 11:30am
Hi there..I'm new in the forum and I hope this is the right section...I tried to search Startec Super Bass Horn plans for 21" on the web but I found nothing..I found only for 18" that lenght is 1200mm..I hope someone could help me..I wanna build 4 subs like that with Eighteen Sound woofer 21LW1400...Thank you so much
Back to Top
HeteBliksem View Drop Down
New Member
New Member
Avatar

Joined: 24 October 2021
Location: belgium
Status: Offline
Points: 2
Post Options Post Options   Thanks (0) Thanks(0)   Quote HeteBliksem Quote  Post ReplyReply Direct Link To This Post Posted: 27 October 2021 at 10:32pm
hi guys, thanks a lot for taking the time to reply on my questions!

@skankinmoe
i will order two NLT4. together with driver when i've finished the cab, just in case i up.. LOL ive also spotted some waterproof versions, maybe not a bad idea if i want to use it outside, the weather in belgium is kinda shitty!

@sushi  
thanks for the efficient answer, i was planning on drilling in panel 14 (plan in following link http://hornplans.free.fr/sbh.html ) but i should drill bottom left or right of 13 right? i thought it might have been 'bad' for the sound if the cable and connectors would've been in front of the driver so therefore i thougt to place it in the lower section of the cab. 

as far as the painting goes, i have easy acces to the warnex speakerpaint, im not familiar with this one but as far as i understand this doesnt need a base layer or impregnating agent, is that correct? 
also, i dont really understand why i cant paint the joints, ive seen vids online of guys applying  -what i guess- acrylic sealants on their joints on the inside so that there cant go any paint in the cracks? but if thats not the right way to go about is it fine if i just tape over joints and have it sprayed so that there is always a centimeter of 'virgin' multiplex surrounding the joints on the inside of the cab?

@sushi @snowflake 
i didnt know the rcf had the clamp connectors, im familiar with those that shouldnt be a problem :)
ill have to check out some videos for the speakon connectors and the easiest way to wire them, if its really not a big difference like @snowlake suggests ill maybe use a thinner wire given that its a lot easier to solder! i get that the power passage might be better using a larger cable but are there any risks besides that like overheating or burning your cable when using a finer one?

thank you very very much! 
Back to Top
snowflake View Drop Down
Old Croc
Old Croc


Joined: 29 December 2004
Location: Bristol
Status: Offline
Points: 2921
Post Options Post Options   Thanks (1) Thanks(1)   Quote snowflake Quote  Post ReplyReply Direct Link To This Post Posted: 26 October 2021 at 1:12pm
the difference between the resistance of half a metre of 6mm2 wire and 1mm2 wire is absolutely negligible (about 0.007ohms). It's a struggle to solder large diameter wire and risks melting the speakon or making a bad joint. heat-shrink sleeves fit much more easily over 1mm-2.5mm wire too.

Back to Top
sushi View Drop Down
Registered User
Registered User


Joined: 27 March 2012
Location: Milan
Status: Offline
Points: 82
Post Options Post Options   Thanks (1) Thanks(1)   Quote sushi Quote  Post ReplyReply Direct Link To This Post Posted: 26 October 2021 at 11:12am
This sub's speakers are usually powered with more than 1kw, depending on the speaker you use. You should use a large section cable (2x4 or 2x6 mm) for a better power passage. If you use a small section cable it could cause a higher electrical resistance and decrease watts passing from the connector to the speaker. Same with the cable connecting amp and cabinet. The RCF lf18n401 speaker has a pair of clamp connectors wich are very practical (you just push, put the twisted cable in, and lift) so you would just have to solder the cable to the speakon connector. You should drill a hole outside for the connector and another smaller one on the baffle panel for passing the cable, no better place to do it than the right or left side under the baffle hole, do not drill in the middle because the speaker edge will go there and it won't leave much space. Buy cable and connectors before you drill the holes so you can make them the correct size, no air should pass through them. You could put 2 connectors per cab and wire them in parallel to run 2 cabs with the same amp channel. If you are not practical with that you'd better check this and other forums on speakon wiring threads, generally there are a lot of guide lines. I'm quite sure you'd find some tutorials online as well.
You'd better paint the speaker with a protective impregnating agent, and then use a hard and resistant finish paint. Just remember if you use water based treatment, you should finish with water based paint, solvent based and water based product don't work well together. Personally i use bicomponent poliurethanic paint, but there are a lot of monocomponent professional paints on the market.. look for warnex or tuffcab. I painted the outside and part of the inside horn (where i can reach..) Its clearly better to paint the inside of the speaker too, specially if you'll use the cabs outside with high humidity and bad weather, but you won't manage to do it when they are built and glued.. you could paint them inside before you put on the lid (which is the 1200x950cm side) but be careful not to paint on joints, or leave drops on them: hardened paint drops could keep panels slighly separated and ineffective joints are the worst thing one can get on this kind of cabs.
Good luck by the way, this ain't no easy build for a beginner.
Cheers!

Edited by sushi - 26 October 2021 at 11:15am
Back to Top
skankinmoe View Drop Down
New Member
New Member


Joined: 23 February 2020
Status: Offline
Points: 9
Post Options Post Options   Thanks (1) Thanks(1)   Quote skankinmoe Quote  Post ReplyReply Direct Link To This Post Posted: 26 October 2021 at 8:31am
Hi Hete

From my expirience (i've built 6):
Construct the plan in CAD. Depending on the source of the plan, it's not realy acurate and there are not a lot or reference Points for measuring.
The middle part can be realy tricky because there are a lot of angles.

For the wiring:
Yes, drill a hole, put the wire in and fill the hole with glue. dont cut it too short, you should be able to connect the speaker outside ob the cabinet an lift it in.
I used two NLT4 MP-BAG and connected them in paralell. this is for connecting multiple Horns together.
Back to Top
HeteBliksem View Drop Down
New Member
New Member
Avatar

Joined: 24 October 2021
Location: belgium
Status: Offline
Points: 2
Post Options Post Options   Thanks (0) Thanks(0)   Quote HeteBliksem Quote  Post ReplyReply Direct Link To This Post Posted: 24 October 2021 at 8:59pm
hi everyone, i got 2 weeks of vacation coming up so i decided trying to build the SBH to keep myself a bit busy Wink.
 
I'm a pretty handy so i'm not worrying too much about the construction of the cab itself, but its the first time ever building a speaker so i do have some questions. Forgive me if these are stupid or if there are already topics about my questions but like i said, i'm a completely new to this!

First of all i was wondering about the cable that goes to the connectors. i suppose the connectors are placed under the removable part in the back, but to get there with the cable, do i have to drill a hole in the panel under the driver to pass the cable to the backpanel is that correct? and is there a specific place to drill or doesn’t it matter if its in the middle or on the sides?  or do i have to follow the path of the horn until i get to the backpanel and not drill at all??

Second, i dont know anything about wiring speakers, connectors, etc... so is there a topic in here somewhere where i can read about this and where i can find some practical information/links or videos about what kind of wires i should use and how i have to wire the drivers and connectors? in general just information about the practical electrical part?

Also, do i paint the entire speaker? inside and outside? or just the outer visible parts?  and what kind of paint should i use? 

At last, if there are some sites, topics, videos that u recommend watching/reading, about cab building/ wiring speakers or anything else, please share!

thank u very much guys! Embarrassed

Back to Top
sushi View Drop Down
Registered User
Registered User


Joined: 27 March 2012
Location: Milan
Status: Offline
Points: 82
Post Options Post Options   Thanks (0) Thanks(0)   Quote sushi Quote  Post ReplyReply Direct Link To This Post Posted: 19 July 2021 at 9:33am
Hi! Thanks for props! I didn't heard them yet unfortunately, but owner tells they sound dope so i'm trusting him for now
Iirc it took 11 or 12 sheets (250x125cm) to make 4. I made a cutlist on workshopbuddy.com, useful online tool i must say.. avoids a lot of tetris playing and wood waste.
Just remember this cab's response take a significant dip around 50hz, which gets normally flatten when using 6 or + in a stack, so if you are going to build a pair you'll probably need to eq the bottom end a bit.
Back to Top
subslut View Drop Down
New Member
New Member
Avatar

Joined: 16 July 2021
Status: Offline
Points: 1
Post Options Post Options   Thanks (0) Thanks(0)   Quote subslut Quote  Post ReplyReply Direct Link To This Post Posted: 16 July 2021 at 10:50pm
hi Sushi, 
them bins look sweet! you must be well happy with them!?.. 
im planning on making a couple myself but need to order the wood,. just wondering how many sheets of ply did you end up using to make a pair? 
cheers!
Back to Top
FOO View Drop Down
Young Croc
Young Croc
Avatar

Joined: 23 December 2018
Location: Denmark
Status: Offline
Points: 635
Post Options Post Options   Thanks (0) Thanks(0)   Quote FOO Quote  Post ReplyReply Direct Link To This Post Posted: 10 March 2021 at 8:58pm
Originally posted by VECTORDJ VECTORDJ wrote:

I get woofers (pre covid) that the coils are melted, the coil/cone joint broken, coils that welded into the magnet, coil wire off the coil former, etc......over and over again....I love it...woofer specs say 1000 watts...put 4000 to 5000 watts into it.......I Love it.....Keeps Me busy......Gas Money for My boat......Use more woofers not more power into a few.....6 to 8 subs a side at safe levels sounds better and lasts a lot longer then 1 woofer a side driven to insane power levels.......But I do not care because I need more gas Money and boat parts for this summer........send Me Your recone work....I Love it. 

Let me repeat myself. 
Headroom.... Its All about headroom. 

1000watt woofer with a 1000 watt Amp isnt a good combo. 
The Amp Will struggle to deliver. 
Always double or tripple the Amp power.
Anybody stating otherwise shouldnt deal with audio gear.
Back to Top
VECTORDJ View Drop Down
Registered User
Registered User
Avatar

Joined: 11 June 2006
Location: United States
Status: Offline
Points: 464
Post Options Post Options   Thanks (0) Thanks(0)   Quote VECTORDJ Quote  Post ReplyReply Direct Link To This Post Posted: 10 March 2021 at 7:15pm
I get woofers (pre covid) that the coils are melted, the coil/cone joint broken, coils that welded into the magnet, coil wire off the coil former, etc......over and over again....I love it...woofer specs say 1000 watts...put 4000 to 5000 watts into it.......I Love it.....Keeps Me busy......Gas Money for My boat......Use more woofers not more power into a few.....6 to 8 subs a side at safe levels sounds better and lasts a lot longer then 1 woofer a side driven to insane power levels.......But I do not care because I need more gas Money and boat parts for this summer........send Me Your recone work....I Love it. 
Back to Top
 Post Reply Post Reply Page  <1 23456 46>

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.05
Copyright ©2001-2022 Web Wiz Ltd.

This page was generated in 0.094 seconds.