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1850 plans using BWP18 driver

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DubOut18k View Drop Down
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    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 
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slaz View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote slaz Quote  Post ReplyReply Direct Link To This Post Posted: 29 December 2022 at 1:36pm
[QUOTE=DubOut18k]H
[/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.
REMEMBER....POLITICIANS AND DIAPERS SHOULD BE CHANGED OFTEN AND FOR THE SAME REASON
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Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post 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...


Global Depopulation - Alive and Killing.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote KidCreole Quote  Post ReplyReply Direct Link To This Post 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
Mykey Wattco
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Post Options Post Options   Thanks (0) Thanks(0)   Quote KidCreole Quote  Post ReplyReply Direct Link To This Post 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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