Bass Guitar Driver in 12"Wedge Monitor Cabinet

[James Nada]

I have an old Laney 12"wedge monitor*, and am wondering about the possibility of sticking a suitable bass guitar driver in it, for use as a small gig/rehearsal/emergency enclosure.

 

Would be paired with a Trace Elliot Elf (rated 200w at 4ohm) so thinking an 8ohm and not getting the 'full' 200w will be fine.

 

I realise there all sorts of mathematics involved, and finding a suitably specced driver for the enclose will involve some level of 'best fit' compromise. 

 

Any advice/ridicule gratefully received.  Can provide measurements.

 

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*it's a Laney CP 12.  Originally an active monitor but the amp section is removed and blanked off

Edited February 22 by James Nada
More details

[Bill Fitzmaurice]

Precise measurements of the cab are the first step.

[James Nada]

On 22/02/2025 at 19:53, Bill Fitzmaurice said:

Precise measurements of the cab are the first step.

 

Measured internally (with some head scratching about how to calculate the area of an irregular polygon) it is ~36.8 cubic litres.

 

That's without allowing for the small structural pieces inside or indeed the space a driver would take. There's also a small horn taking up a little internal space, which presumably could be left in situ

Edited February 24 by James Nada

[Bill Fitzmaurice]

And the port? If there is one.

[James Nada]

36 minutes ago, Bill Fitzmaurice said:

And the port? If there is one.

Port is circular, 59mm in diameter and 16mm deep (the thickness of the panel).

[Bill Fitzmaurice]

So we'll call that 30L tuned to 65 Hz. Two that will work well are the Celestion TF1230S and Lavoce WAF 122.50.

[James Nada]

8 hours ago, Bill Fitzmaurice said:

So we'll call that 30L tuned to 65 Hz. Two that will work well are the Celestion TF1230S and Lavoce WAF 122.50.

Thanks very much for your help Bill.  I'll check those suggestions out