Splitting the AUX outlet on WiiM Mini to add Active Subwoofer?

[Erebus]

Is it possible (or even advisable) to split the 3.5mm output on the WiiM Mini to add an active subwoofer together with the powered speaker it's already connected to? I have the Mini in a permanent WiiM Group with my Pro Plus and I'm looking for a simple and affordable way to add a subwoofer to my setup. I was hopeful of securing a WiiM Sub Pro, but at AUD$899 it's way out of my reach. I was thinking of an Edifier T5 or similar.

Can it be done?

 

[Wiimer]

Is it possible (or even advisable) to split the 3.5mm output on the WiiM Mini to add an active subwoofer together with the powered speaker it's already connected to? I have the Mini in a permanent WiiM Group with my Pro Plus and I'm looking for a simple and affordable way to add a subwoofer to my setup. I was hopeful of securing a WiiM Sub Pro, but at AUD$899 it's way out of my reach. I was thinking of an Edifier T5 or similar.

Can it be done?

If the active speaker and subwoofer have the same amount of delay, this will not cause problems, but if not, it is difficult to sync audio. In that case, you can synchronise by adding another Mini for the subwoofer.

 

[Erebus]

adding another Mini

Thank you for the advice. I was hopeful of a solution without the need of another WiiM.

 

[Wiimer]

Thank you for the advice. I was hopeful of a solution without the need of another WiiM.

Edifier T5 has a Line out, so this connection will probably work.
Split cable is not necessary.

 

[Erebus]

this connection will probably work

That's interesting, thank you. As you may remember, the active speaker I have connected to the Mini is the Echo, so perhaps it's a possibility with all the correct cables.

I would need to use 3.5 to RCA from the Mini to the Sub, and then RCA to 3.5 to connect back to the Echo. However I have no idea if it would work this way.

 

[Wiimer]

That's interesting, thank you. As you may remember, the active speaker I have connected to the Mini is the Echo, so perhaps it's a possibility with all the correct cables.

I would need to use 3.5 to RCA from the Mini to the Sub, and then RCA to 3.5 to connect back to the Echo. However I have no idea if it would work this way.

That connection method should be fine, but the output voltage of the Sub is unknown. Can you contact the Edifier store (on Amazon)?

 

[Erebus]

the output voltage of the Sub is unknown

Is that an issue?

 

[Wiimer]

Is that an issue?

I don't think so, but wanted to make sure

 

[Erebus]

I don't think so, but wanted to make sure

Oh, I see. Not sure how to find out. It's only 70 watts I think, but have no idea about output voltage.

Nothing is ever simple!

 

[Wiimer]

Oh, I see. Not sure how to find out. It's only 70 watts I think, but have no idea about output voltage.

Nothing is ever simple!

I found this on Amazon Japan, here is an example of how it connects to an Edifier M60. Replacing M60 with Echo would work.
Please forget about voltage

 

[Erebus]

found this on Amazon Japan

Thank you! It seems to be a better option than splitting the output, and as you say, connecting this way should work with the Echo. I have much to think about now.

 

[Wiimer]

Thank you! It seems to be a better option than splitting the output, and as you say, connecting this way should work with the Echo. I have much to think about now.

It is possible that the location where the sub is placed may cause discomfort if it is too close to the listening point. In that case, you could connect the sub to the Pro plus side.

 

[Erebus]

connect the sub to the Pro plus side.

Oh, okay. So I would use the RCA out from the Pro Plus into the Line in on the Sub, and then RCA from the Sub Line out into the amp?

 

[Wiimer]

Oh, okay. So I would use the RCA out from the Pro Plus into the Line in on the Sub, and then RCA from the Sub Line out into the amp?

Yes

However, these connections have a weakness: the WiiM's high-pass filter can't be applied to the speakers, so the speakers play (as before) full range.
(Maybe there is no high-pass filter on the sub side. This is unconfirmed.)

Nevertheless, the WiiM Mini does not yet support a high-pass filter function.

 

[PIMK]

On my WiiM Pro+ i'm using on my Desk i connected an PreSonus Eris Sub8 wich has RCA in and out and also high- and low-pass Filter. The Mackie CR3.5 Monitor Speakers Arena connected to RCA Out. Sound is good for my old Ears.

 

[Erebus]

PreSonus Eris Sub8

Thanks for that information. That seems like a good Sub. Bit expensive for me though unfortunately.

I'm looking for a simple and cost effective solution to boost the bass at lower volumes. The bass is not too bad with the combination of speakers I'm using, but at times it could probably be a little more powerful.

I can get the Edifier T5 delivered currently for only AUD$209.00, which is a bargain.

https://www.centrecom.com.au/edifier-t5-powered-active-8-70w-rca-subwoofer-black

 

[Erebus]

Maybe there is no high-pass filter on the sub side

The Edifier site information only mentions a Low Pass Filter:

8" Speaker Driver for distortion-free bass
Low pass filter with 38Hz frequency response
Reduced acoustic resonance with MDF enclosure
Automatic standby to conserve power
Adjustable Bass and Frequency Bandwidth

Would the lack of a High Pass Filter be an issue?

 

[Wiimer]

The Edifier site information only mentions a Low Pass Filter:

8" Speaker Driver for distortion-free bass
Low pass filter with 38Hz frequency response
Reduced acoustic resonance with MDF enclosure
Automatic standby to conserve power
Adjustable Bass and Frequency Bandwidth

Would the lack of a High Pass Filter be an issue?

It is just my opinion. I don't think it's even a issue, but it's better to have a high pass.

Can you tell me more about your room?
(You can continue this by PM )

I would like to know the distance of each speaker from the listening position, the volume, the size of the room, etc.

 

[Erebus]

Can you tell me more about your room?

Thank you. Okay, so you've given me homework to do now! I will need a little time.

 

[dominikz]

@Erebus I have a WiiM Mini Aux Out connected to the RCA input of my Adam Sub7, and the XLR output of the sub connected to XLR input of my Neumann KH120A powered speakers - basically like @Wiimer showed in post #4. The sub handles low pass and high pass filtering (85Hz crossover) - so bass management is done by the sub.

I'd personally go for a subwoofer that has high-pass filter (HPF) capability for its line output, as that gives a bit more flexibility when doing the integration.

You can find a very comprehensive list of subs here, it is even listed whether or not each model has an HPF.