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1850 plans using BWP18 driver

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=107584
Printed Date: 19 April 2024 at 5:08am
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com


Topic: 1850 plans using BWP18 driver
Posted By: DubOut18k
Subject: 1850 plans using BWP18 driver
Date Posted: 29 December 2022 at 1:28pm
Hi we are currently building x6 1850 bass bins.

We are looking at alternatives for the pd1850 and have been recommended the British made bishop audio BWP18, just thought I would get you thought on the the driver and see if any has done it before?

https://bishopsound.co.uk/products/18-1500w-rms-8-ohm-subwoofer-bass-speaker-cast-alloy-driver-with-faston-terminals-bwp18

Thanks 



Replies:
Posted By: slaz
Date Posted: 29 December 2022 at 1:36pm
[QUOTE=DubOut18k]H
https://bishopsound.co.uk/" rel="nofollow - https://bishopsound.co.uk/
[/QUOTE

... just reaching for the popcorn ...

OK well I'll post something. Anything to do with Bishopsound will be treated in here with a good deal of disdain/disapproval/mirth. The drivers are just cheapie Chinese ones.


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REMEMBER....POLITICIANS AND DIAPERS SHOULD BE CHANGED OFTEN AND FOR THE SAME REASON


Posted By: levyte357-
Date Posted: 29 December 2022 at 2:24pm
Originally posted by slaz slaz wrote:


... just reaching for the popcorn ...

OK well I'll post something. Anything to do with Bishopsound will be treated in here with a good deal of disdain/disapproval/mirth. The drivers are just cheapie Chinese ones.


As requested, bit of disdain, and slice of mirth...




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Global Depopulation - Alive and Killing.


Posted By: KidCreole
Date Posted: 29 December 2022 at 7:50pm
They will be fine if he has any leftDisapprove

The driver is a copy of the 1850

The first driver was sent to me via courier for me to test and extract the true T/S parameters, because the ones on the 'BS' website are guessed.

The correct T/S are as follows...

Re: 5.48
Fs: 36.4
Qts: 0.306
Qes: 0.316
Qms: 10.64
Le: 1.22
Mms: 275.1
Vas: 270.6
SPL: 98.03


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Mykey Wattco


Posted By: KidCreole
Date Posted: 29 December 2022 at 8:07pm
A quick note to any buyers of this driver

If you are going to purchase this driver please make sure that they are the second batch (container load)

I was asked to QC the driver and the first thing that I noticed was that the Chinese manufacturers were lazy and had made the cone kit's up first then glued them into the baskets

Why is this a problem?

You could end up with a perfectly flat cloth surround and a sunken spider, or vice versa

The second fault I found was the pole piece mesh was too fine 

Apart from this, they were well worth the money of £180  at the time just before BS lockdowns, if you could find any without the spider and surround problems that is.


-------------
Mykey Wattco



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