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BG Horn Mk1 - 36hz Front loaded horn

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citizensc View Drop Down
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Joined: 16 October 2015
Location: Perth,Australia
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    Posted: 22 June 2020 at 3:46am
Hi Guys

I have made this thread as a place to access the plans and ask questions about the BG Horn. 

PM me if either of the below links go dead.




What is the BG Horn? 
It is a 15 inch front loaded horn covering ~36-90hz. It is designed for the 15BG100. It has similar folding to a Punisher but is larger, more sensitive, plays lower, and should take more power. 

Why should you build the BG Horn?
-You need a FLH that plays below 40hz
-You want to build a FLH but other designs look too complex and hard to build
-You want a FLH that that is a manageable size and weight, the BG Horn is about 75kg loaded
-You would rather not spend big money on they types of drivers that are popular in DIY horns (pd.1850, V18-1000, 18sw115 etc.)
-You want to build a horn with a driver that is widely available and is likely to stay that way for some time
-You don't live in Europe or the US and find it difficult to get good quality 18 inch drivers due to air freight restrictions. 

Why shouldn't you build a BG Horn?
-You don't feel comfortable with building untested design. If you would like to give this plan a try, hit me up via PM or comment in this thread, id love to hear about it! 
-You plan to build less than 4 cabs, this may work okay with two cabs but is designed to work in groups of 4 or more. 
-You need a cab that is a one man lift (build single reflex cabs if you want this) 
-You are looking for a one-way bass solution that plays above 100hz. 


Here are some sims show where it fits - keep in mind that speaker design is about compromise, these cabs are all different size, efficiency, bandwidth and cost compromises. 

All sims are 2.83v @ 8 ohm (1 watt), 4 cabs grouped, 0.25 watt per cab. 

Punisher (12.00sw) Black, BG horn grey

1850 horn (pd.1850) Black, BG Horn Grey

WSX (V18-1000) black, BG Horn Grey

SBH (PD.1850) Black, BG Horn Grey

TH18 (18sw115-8) Black, BG Horn Grey




Edited by citizensc - 27 June 2020 at 10:26am
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