DIY Sonos sub

[wjwren]

Ive seen some return stock on a sonos gen 3 sub. The case is heavily smashed but the item is listed as turning on and working. The item is mega cheap so would take a punt on it working. Would it be feasible to take the 2 speakers / electronics out and mount them in a new case. Ive seen various MDF subwoofer cases on ebay that are made to order from £20 upwards. What would be the best confihuration for mounting them - does anyone know the size of these speakers? I could mount them either side of the sub or maybe try to fit them both downfiring.

[Crackie]

wjwren said:

Ive seen some return stock on a sonos gen 3 sub. The case is heavily smashed but the item is listed as turning on and working. The item is mega cheap so would take a punt on it working. Would it be feasible to take the 2 speakers / electronics out and mount them in a new case. Ive seen various MDF subwoofer cases on ebay that are made to order from £20 upwards. What would be the best confihuration for mounting them - does anyone know the size of these speakers? I could mount them either side of the sub or maybe try to fit them both downfiring.

Interesting idea.

Here's a link to the Sub's page on the Sonos site https://www.sonos.com/en-gb/shop/sub

The pair of drivers are mounted face to face in the slot..............it's a well known technique used to lower the resonance frequency of the individual driver. The basic design uses conventional reflex loading, using the pair of curved port tubes seen in the cutaway / exploded drawing.

Much depends upon how badly damaged the Sonos 'return stock' mouldings are and how much can be salvaged intact. Alternatively you could make a conventional ported cabinet, with a slightly larger internal volume than the Sonos......if the Sonos' mouldings are too badly damaged.

The Sonos design has an internal volume of approx 17litres.........if you were to make your own enclosure I'd make it approx 25litres. This will help lower the resonance frequency of the drivers and get closer to the frequency achieved by the slot loading technique of the Sonos design.

Can the retailer send you any pics of the cabinet damage? It may be possible to produce a 'hybrid' using a wood or ply or mdf outer 'shell', but keeping the original Sonos' internal dimensions. If the damage isn't too severe it may be possible to salvage / keep the original internal mouldings.

Edited by Crackie on Wednesday 10th August 09:36

[heisthegaffer]

Let us know how you get on, I love hearing about these things.

[MJNewton]

Could you just wrap the damaged sub in a fabric outer?

[wjwren]

Are there any instructions on how to open a 3rd gen sub up. It seems a sealed unit. Can't seem to get into it.

[wjwren]

Managed to find these off the net. Looks like it clips in. Will try removing it with screwdriver.

[wjwren]

Anybody!

[normalbloke]

Nope. They look incredibly well put together, and very dense. I’d go as far as to suggest getting one apart without further damage will be quite the feat.

[Crackie]

wjwren said:

Anybody!

Hopefully there will be some helpful / knowledgeable contributors on here.

https://en.community.sonos.com/

or here

https://www.isonatec.com/

Edited by Crackie on Tuesday 23 August 13:38

[wjwren]

I found a guide on YouTube for a gen 1 which worked the same. thanks all.

[Patch1875]

Sub v2 is £399 just now for a refurb one.