Feature request. Low-/High pass filters

ROSE Products RS520
#1

Hi Rose team and community,

I’d like to submit a feature request that I believe would be a significant upgrade for subwoofer users.

Currently, the RS520 pre-out sends a full-range signal to the subwoofer, while the main speakers also play full-range. It would be a game changer if we could configure crossover filters directly in the RS520’s UI:

• Pre-out (subwoofer): configurable low-pass filter (e.g. 80 Hz)
• Speaker outputs: configurable high-pass filter (e.g. 80 Hz)

This would relieve the main speakers from reproducing deep bass they weren’t designed for, reduce distortion, improve dynamics, and result in a much tighter integration between the subwoofer and main speakers.

Given that the RS520 already has a parametric EQ and a digital signal path, this should be achievable in software without hardware changes. The logical place to configure this would be in the existing In/Out Settings UI, where you tap the pre-out to configure it — simply adding crossover frequency and filter slope options there.

This single update would elevate the RS520 to a level of sound quality that no other all-in-one streaming amplifier on the market currently offers.

Hoping this gets some traction — would love to hear if others agree!

Thanks for the continued development of RoseOS.

1 Like
#2

While there are some issues here, I think its an interesting request.

There is no dedicated Sub Out, so you would want to put a filter on the RCA line outs only. (I’m not sure if that could be done, but it would be an interesting thing to research. This would then give you two sub channels.

And if you’re going to do this… if it is feasible… then maybe do a mono mode for the line out that would be separate from the speakers out. This way if you only have one sub woofer, you could have the same thing rather than using a splitter cable to combine both channels. (Still having a variable set high pass filter where you can have settings like 50, 80 or 120Hz)

@koen_geraedts , There are some subs like the REL where its recommended to use the speaker outs as the input into the sub. (Rel provides a really long cable into a speakon connector for this type of connection…) Then tune the REL which has a variable low pass filter and volume setting.

Because I use the REL subwoofer, this feature wouldn’t matter to me, but I think it could be a good feature to have.

#3

:man_facepalming:t2:

And what about the amplifier delay time of the active module??? Furthermore, what about the distance from the main speakers—and the sub (or subs)—to the sweet spot???

You’re rambling on about external clocks, yet you want to just slap a sub onto the Rose unit without properly calibrating it?

  1. Do you seriously “believe” that every Rose customer is going to grab REW, buy a UMIK-2 (which is supposedly lower-noise than the UMIK-1), and take all the necessary measurements? What about the time alignment between the subs and the main speakers? Crossover frequencies—sure, you can set those; yup. But it’s always better when each user can define their own specific crossover frequency.

  2. Do you seriously “believe” that Rose would install such shoddy junk? If—and only if—they do anything at all, Rose will implement a professional-grade solution. Perhaps, sometime in the distant future, Rose might even manufacture a dedicated external device, much like Accuphase does.

  3. You surely don’t seriously believe that Rose would roll out such a cobbled-together “upgrade,” do you?

Which brings us right back to your “beliefs” and assumptions! :wink:

#4

Bonte,
You’re the one rambling.

What’s the matter, you don’t know how to position your sub woofers?

You’re right, you are lazy. :laughing:

#5

No, what is a subwoofer??? Is that something for combing your hair? No idea!

No, I just want to hit the “Buy” button, and the rest should happen all by itself—as if by magic.
What does that have to do with laziness? After all, I have to turn on my computer and click the mouse just to place the order. Why don’t the retailers just know that I want this?

That’s usually how it seems to me with you. Many people cannot combine information or read between the lines, thinking: “Aha, he could mean that, or he could mean something else.” Consequently, everything has to be served up on a silver platter, without anyone making the slightest effort to engage with the subject matter themselves. (Though, in your case, it’s not quite that bad.) There are plenty of people like that around here!

Alright, go ahead—beat me up, everyone! :fist_right:t2: :tired_face: :fist_left:t2:

:crazy_face:

#6

There is nothing to beat up.
If you want something simple buy an AIO (which you did)

BTW here’s a new one that’s in your neighborhood.

I’d say for the kitchen or something.
And go w active speakers vs the AIO.

But back to this feature request…

It would be a baby step towards room correction. Getting more controls over the speaker and line out ports.

#7

Yeah, not bad—but what does it offer that a WAU or ES-Play doesn’t?

I just bought a unit for the kitchen. My vintage gear had to make way, and now I have nothing but a small all-in-one system in there. Since I hardly spend any time in the kitchen beyond making tea and cleaning, the WiiM Amp Ultra is (for me) perfectly suited for that. Since I only stream via Roon anyway, it’s a small, neat endpoint, just like the 520. The device is only intended for background music listening and costs less than 4.21 times the price of the Lindemann Woodnote COMBO. While I don’t actually use Wi-Fi on devices like this, why on earth would I buy a unit that doesn’t even support Wi-Fi 6 yet costs 4.21 times as much? That’s like carrying wood in the forest! But if you were to do something like that, which I don’t believe, since you also bought the 520 as a demonstrator, then go ahead. My MB Pro with M3pro also supports WiFi 6E, and so does the WAU. Furthermore, the DAC chip in that unit doesn’t really mesh well with my speakers. Or rather, let’s just say I pay a bit of attention to system synergy! Since I already own (passive) bookshelf speakers that have a naturally warm tonal character—and which, in this specific case in my kitchen, are mounted tightly against the wall on brackets (due to the room layout)—the drivers sit very close to the rear wall. For that reason, I generally prefer speakers with front-firing ports—whereas nowadays, most bookshelf speakers feature rear-firing ports. If you actually place them on a bookshelf, the whole thing starts to rattle and vibrate. Consequently, I no longer consider most so-called “bookshelf speakers” to be true bookshelf speakers at all. But ultimately, it doesn’t really matter. The WAU includes built-in room calibration and bass management features. In addition, I could also use Roon’s Muse. Ultimately, it doesn’t matter, I could have gotten an ESP (which, however, has a rather low 60W output power), which, as I mentioned, is only intended for playing music in the background.
Besides, I don’t need any line outs!

That’s my take on the matter. :crazy_face:

#8

And here I thought your first criteria would be sound.

I guess the WiiM would be a step up from just listening to music on your phone.

Personally I’d get an Arcam solo uno for $250 if you can find it. Its discontinued but sounds great for what it is.

Wi-Fi 6 doesn’t do much if the rest of your gear is still wi-fi 5.
But to your point the network device seems to only have a 100Mb port which is enough for the device but antiquated.

If you’re going w WiiM why not go w Bose or do they not make those AIO w speakers attached?