Wiim Sub Pro

[gasolin75]

I can't adjust the volume since the volume out is fixed at 100%

I have adjusted it's max volume to my speakers

If i connect a sub to my streamer the volume will be the same from the sub when i adjust the volume on the wiim vibelink amp

 

[steve-z]

I've owned a few subs in past hifi systems and I've never been totally happy with the results. For the last 8 months or so I've been within the WiiM ecosystem having been using a WiiM Ultra streamer having previously used a Bluesound Node 2i.
The rest of the setup comprises a pair of Q Acoustics M20 powered speakers which I've had for just over 3 years. The BS Node 2i was good but I find the WiiM home app to be more versatile and easier to use. I only recently decided to try the Roomfit software and I have to say the results I've been getting show it is worthwhile, bass level is reduced but the bass itself is much tighter, I make the assumption that the software has flattened a room peak in the bass. It was only through checking this out that I came across the WiiM Sub Pro, At £429 here in the UK it looks decent value (one of my previous unsuccessful subs cost me £750 and that was 15 years ago). Must say I love the futuristic design and the slot port hiding away the driver. I noticed some comments about the driver size and amp power perhaps not being up to the task but I think it would be more than sufficient for my needs, I rarely listen with the system delivering peak levels of more than 70-75dbs at my listening position and average of quite a bit less, so I don't think that would tax the sub at all in my 6x4m living room. As the Roomfit has worked well with the main speakers alone I'm confident it would work well with the addition of a WiiM Sub Pro, it would also enable me to set the LF DSP on the M20's to the corner setting which gives the lowest bass output which would give the 5.5" drivers less work to do.
The only thing that I would need to decide would be whether to connect it up from the WiiM Ultra sub output or the M20's sub output, would one be better than the other ? any thoughts ?

 

[StephenMarkLay]

I've owned a few subs in past hifi systems and I've never been totally happy with the results. For the last 8 months or so I've been within the WiiM ecosystem having been using a WiiM Ultra streamer having previously used a Bluesound Node 2i.
The rest of the setup comprises a pair of Q Acoustics M20 powered speakers which I've had for just over 3 years. The BS Node 2i was good but I find the WiiM home app to be more versatile and easier to use. I only recently decided to try the Roomfit software and I have to say the results I've been getting show it is worthwhile, bass level is reduced but the bass itself is much tighter, I make the assumption that the software has flattened a room peak in the bass. It was only through checking this out that I came across the WiiM Sub Pro, At £429 here in the UK it looks decent value (one of my previous unsuccessful subs cost me £750 and that was 15 years ago). Must say I love the futuristic design and the slot port hiding away the driver. I noticed some comments about the driver size and amp power perhaps not being up to the task but I think it would be more than sufficient for my needs, I rarely listen with the system delivering peak levels of more than 70-75dbs at my listening position and average of quite a bit less, so I don't think that would tax the sub at all in my 6x4m living room. As the Roomfit has worked well with the main speakers alone I'm confident it would work well with the addition of a WiiM Sub Pro, it would also enable me to set the LF DSP on the M20's to the corner setting which gives the lowest bass output which would give the 5.5" drivers less work to do.
The only thing that I would need to decide would be whether to connect it up from the WiiM Ultra sub output or the M20's sub output, would one be better than the other ? any thoughts ?

I would connect to the sub out and use the WIIM high pass. This was the crossover you choose for the sub with automatically set the high pass for the mains. You can turn this off but I think it works great.

 

[staticV3]

The only thing that I would need to decide would be whether to connect it up from the WiiM Ultra sub output or the M20's sub output, would one be better than the other ? any thoughts ?

Probably best to use the WiFi/Ethernet connectivity, as that'll cut down on AD/DA conversions and their added delay.

RoomFit will handle sub integration just fine, even if you're not using either of the RCA Sub outputs.

 

[StephenMarkLay]

Probably best to use the WiFi/Ethernet connectivity, as that'll cut down on AD/DA conversions and their added delay.

RoomFit will handle sub integration just fine, even if you're not using either of the RCA Sub outputs.

With a sub, the wiim will correct for delay.

 

[staticV3]

With a sub, the wiim will correct for delay.

If video is involved at any point, then it's best for the delay to be as low as can be out of the box, as the WiiM can only correct by delaying the faster component to match the slower.

Edit:
Though saying that, I realize that I have no way of knowing whether transmitting via LAN even is faster than via a few DACs and ADCs

 

[StephenMarkLay]

If video is involved at any point, then it's best for the delay to be as low as can be out of the box, as the WiiM can only correct by delaying the faster component to match the slower.

Got it!

 

[steve-z]

Probably best to use the WiFi/Ethernet connectivity, as that'll cut down on AD/DA conversions and their added delay.

RoomFit will handle sub integration just fine, even if you're not using either of the RCA Sub outputs.

I don't generally like using wifi, I prefer Ethernet, that's how the WiiM Ultra is connected and I'd prefer to have the sub connected with RCA. Where the sub would be positioned (don't have a lot of options for that) RCA cable runs would be short, about 1m if connected to the M20 control speaker, 1.5m if connecting to the WiiM Ultra. The WiiM Ultra output to the M20 control speaker is by stereo RCAs.

 

[staticV3]

I don't generally like using wifi, I prefer Ethernet, that's how the WiiM Ultra is connected and I'd prefer to have the sub connected with RCA. Where the sub would be positioned (don't have a lot of options for that) RCA cable runs would be short, about 1m if connected to the M20 control speaker, 1.5m if connecting to the WiiM Ultra. The WiiM Ultra output to the M20 control speaker is by stereo RCAs.

Got it.

Between M20 Sub out and WiiM Sub out, the latter would be better, as that way you get a number of sub integration controls via the WiiM Home App

 

[Bernard23]

Just stumbled across this whilst searching for a better sub. Wondering if 2x Wiim subs would work better than 1 x BK Monolith, or the HSU VTF-3 for example, and a big appeal is the wireless connectivity but I gather than you can't connect more than one sub to an Ultra wirelessly?

Even if it is it possible and I'd have to use a Y splitter then I wonder if 2 subs at lower 20Hz power in different locations are a better musical solution than one big box that's flattish to 20Hz

 

[StephenMarkLay]

You won’t get flat to 20. Maybe 25 at best. Even so probably not as much output as a larger sub but mine sounds good

 

[Bernard23]

You won’t get flat to 20. Maybe 25 at best. Even so probably not as much output as a larger sub but mine sounds good

Even with dsp and two boxes? The wharfedale that I've got simply doesn't output anything of any use at 20Hz so adding 20 of them won't change that.

 

[john61ct]

So you cannot get STEREO bass wirelessly if you buy a pair to colocate with Front L/R ?

If true, marketing department oversight

 

[Bernard23]

So you cannot get STEREO bass wirelessly if you buy a pair to colocate with Front L/R ?

If true, marketing department oversight

Stereo bass doesn't exist, at LF it becomes omnidirectional. Multiple subs are for node / standing wave cancellation not L+R channels.

 

[steve-z]

Stereo subs are a fallacy as bass frequencies are non directional, similarly there are no music frequencies as low as 20hz save for the lowest church organ note, a sub that can reproduce 20hz might work in a very large room for rumble effects in some movies.
For a frequency to be reproduced the half wavelength needs to fit in the listening room, the wavelength of a 20hz tone is about 17 metres so the room would need to be at least 8.5 meters long.

 

[thcdru2k]

https://www.researchgate.net/public...y_Localisation_of_Low-Frequency_Sound_Sources and https://pubmed.ncbi.nlm.nih.gov/40587519/

Still an avenue worth exploring

 

[Bernard23]

The experiment was conducted in an anechoic chamber, which is conceivably a significant influence on the results.

 

[qirex]

I’ve heard panned low bass but it was at a very large venue with probably at least 75 feet between left and right and tens of thousands of watts of bass power. Plus I suspect the artists were doing some weird processing with harmonic tones to exacerbate the feeling.

 

[Torin Krell]

Could be.

But why would you want to integrate a sub, which is a headache, when tower with 2x8" passive drivers could probably get you to the same place? Can't really say as did not listen to this sub though. Integration for the towers is already done, for better or worse, depending on the model you choose.

You even don't have to get a stand for bookshelves with the towers?

Agreed - subs with their integration and added set up complexity really should at least reward you with all the low end reach that you want. Since I listen to a variety of music including electronic I will only use subs (generally a pair) that go cleanly all the way down to 20hz or below.

 

[Chrispy]

Really I want DC powered for off grid use, but "inquiring minds want to know"

With OP was wondering why but this is a specific use. Car camping?