1850 and 186 horns - Beyma 18g50 in 1850 horn

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Beyma 18g50 in 1850 horn

Printed From: Speakerplans.com
Category: Plans
Forum Name: 1850 and 186 horns
Forum Description: Discussion / Questions about the 1850 and 186 horns
URL: https://forum.speakerplans.com/forum_posts.asp?TID=1724
Printed Date: 26 March 2026 at 7:10pm
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com

Topic: Beyma 18g50 in 1850 horn

Posted By: Sub18e
Subject: Beyma 18g50 in 1850 horn
Date Posted: 16 April 2005 at 7:04am

For the 1850 horn they suggest a driver with an EBP over 125 and a BL over 28. The beyma 18g50 has an EBP of 121.2 and a BL of 28.8Tm. So my question is. Can the beyma driver perform good in the 1850 horn? Another thing i would like to do for practical reasons is change the width from 636mm to 580 mm or is that a bad idea?

Thanks!

Replies:

Posted By: mobiele eenheid
Date Posted: 19 April 2005 at 1:20pm

Theoretically it can, but I seem to remember that Rog didn't like the use of Beyma speakers in hornloaded, since the cone's wouldn't be up to the job. Anyone?

Another thing i would like to do for practical reasons is change the width from 636mm to 580 mm or is that a bad idea?

Bad idea (with capitol B as you can see).

Posted By: Sub18e
Date Posted: 19 April 2005 at 1:47pm

Ok thanks! I won't touch the width.

But can anyone help me with the Beyma 18g50?

Posted By: Fushion Julz
Date Posted: 19 April 2005 at 4:20pm

For that Beyma driver I'd build the 186 Horn instead as it is better suited to drivers of lower EBP.

However, since the Beyma isn't much different in price to the PD186, why not just build a PD186 horn?

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FUSHION SOUNDSYSTEM

http://www.fushion.org.uk - www.fushion.org.uk

Posted By: Sub18e
Date Posted: 20 April 2005 at 11:17am

Ok thank's everyone! I'll start building the 186 horn then.

The reason I want to use beyma is because I have 4 18g50 woofers and i don't have te money to buy something else .

Posted By: tb_mike
Date Posted: 21 April 2005 at 1:12am

It may well work since the specs are similar. Take a risk and use the 4 18"s you have,you could blow the cones to bits if your unlucky. Or be safe and sell them to some one and use the driver that everyone knows,works.