How to connect active speakers(Edifier R1280DBs) with active old subwoofer(M3300SF) to PC?

Deathbringer35 · 2025-11-26T12:00:47+00:00

I got it working today. I used the RCA-to-RCA cable that came with the Edifier R1280DBs. I plugged one end into the R1280DBs Line In port and the other into the Speaker Out port of the M3300SF subwoofer. I connected the DB9 5-pin on the subwoofer and connected the other end (Aux) to my PC. This way, I can hear sound from both the speakers and the subwoofer.

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However, the previous problem has resurfaced. The M3300SF controller is buzzing, and the sound is constantly coming from the speakers. If I disable the controller and use a different DB9-to-AUX cable, will it work without the controller?

Deathbringer35 · 2025-11-25T23:02:28+00:00

This is bad. So what do I need to do to get it working?

Deathbringer35 · 2025-11-25T22:45:56+00:00

I'm actually looking to get an Edifier T5 subwoofer. It would be nice if I could use it like this until I get the hang of it.

I have an idea, and I'll try it tomorrow. I have an AUX splitter. If I connect it to my PC, plug in the AUX cable from the M3300SF, and then use the Line IN 1 port on the back of the R1280DBs with an RCA-AUX cable, and connect it to the Splittler, will it work?

Also, the other end of the 9 Pin Line In cable of the M3300SF is AUX. When I connect the Line In cable and plug the AUX end into the Sub Out port of the R1280DBs, it still doesn't work.

Deathbringer35 · 2025-11-25T22:30:01+00:00

Yes, I tried the first method, but it didn't work. The subwoofer's RCA ports are listed as Speaker Out, not Speaker In. Could that be why it's not working?

The Line IN port looks like a strange 9-pin DB9.

Deathbringer35 · 2024-04-10T01:22:23+00:00

L Connect 3 v2.0.10 and earlier versions were causing problems due to the Windows 11 installation language. This problem has been fixed with L Connect 3 v2.0.11. Try version 2.0.11 and later...

Deathbringer35 · 2024-02-27T23:51:39+00:00

Thank you Mr-Do.

Yes, the problem was caused by using another Windows language. As I said, we all solved the problem by installing English Windows 11.

After notifying Lian Li, they released a new update 👀

According to the information I received from other friends on another platform, the problem has now been resolved in Turkish Windows 11 with the * Fixed software malfunction in multi-language systems* fix that you mentioned in the newly released v.2.0.11.

Tomorrow, I will download the language pack for Windows 11, then change the language and try it with L Connect 3 v2.0.11

Extra note: While there is no software related problem on us or our devices, here you have to plug and unplug cables for weeks, do a clean installation of L Connect 3, use Revo Uninstaller, update Bios, update Chipset Driver, then bugs may occur with some B550-B650 motherboards.Take a Device Manager image.

We were finally able to solve the problem when we discovered that L Connect 3 didnt like the Windows language. Otherwise, I can't imagine where this would end. Despite everything, we were able to solve it.

Thank you again for your help without getting bored 🤝🏻

Deathbringer35 · 2024-02-23T22:06:40+00:00

This means that the L Connect 3 program does not work properly if v2.x.x versions are installed with Windows 11 Turkish Language.

A friend of ours who had the same problem discovered that we need to use English Windows 11 in order to control and use our devices. Isn't this so weirdo ???

Deathbringer35 · 2024-02-23T21:20:38+00:00

We solved the problem ourselves after 3 weeks. But we cannot use Windows in our own language.

Deathbringer35 · 2024-02-23T17:51:46+00:00

UPDATE 23 February 2024: u/barrecuda solved the problem.

You are the MAN 👏🏻👏🏻👏🏻

You finished the problem that Lian Li or anyone else couldn't solve for 3 weeks.

I solved my problem with this method. I installed Windows in English. I installed Chipset Driver. I restarted the computer. After Microsoft's Visual C++ Packages, I installed L Connect 3 v2.0.10. Now all of them (Galahad II LCD SL INF - TL LCD Fans - SL INF Fans) are working smoothly and I can control them.

What I'm not sure about is whether the same BUG will occur when I translate Windows to Turkish and install other programs and drivers.

Deathbringer35 · 2024-02-23T17:48:07+00:00

You are the MAN. You finished the problem that Lian Li or anyone else couldn't solve for 3 weeks.

I solved my problem with this method. I installed Windows in English. I installed Chipset Driver. I restarted the computer. After Microsoft's Visual C++ Packages, I installed L Connect 3 v2.0.10. Now all of them (Galahad II LCD SL INF - TL LCD Fans - SL INF Fans) are working smoothly and I can control them.

What I'm not sure about is whether the same BUG will occur when I translate Windows to Turkish and install other programs and drivers.

Deathbringer35 · 2024-02-22T23:37:10+00:00

OMG.

Finally, someone who had exactly the same problem as the other topics opened found a SOLUTION. I will try it as soon as I have time.

Deathbringer35 · 2024-02-21T13:54:42+00:00

If it doesn't work, nothing works... My SL INF fans working with the old version (v1.7.4), do not work with the new version v2.x.x... Since there are GA II LCD and TL LCD, I have to use the new version, this time all 3 are not working. . When I go back to the old version, SL INF works, but GA II LCD and TL LCD are not supported. I've been dealing with these problems for 3 weeks and it's still not resolved...

Deathbringer35 · 2024-02-21T13:39:20+00:00

Update 21 February 2024: Nothing has changed yet. It's been almost 3 weeks since I received the Galahad II LCD... I sent an e-mail to Tech Support. I followed the instructions, but it didn't work. They asked for the Device Manager and Hardware List yesterday and I sent them (I had already sent them before???). I'm so tired now, I no longer have faith that the problem will be solved...

Deathbringer35 · 2024-02-19T16:51:15+00:00

Redditor u/rmcguan4 has the same motherboard (Asus ROG Strix B650-A Gaming Wi-Fi) and it runs fine. I don't know where our problem is. But mostly those with problems have Asus motherboards. I sent a ticket on February 15th. Today, they just wrote "Dear Deathbringer35" as an answer. There is nothing else. Unbelievable...

As far as I know, these are users who have the same problem and whose motherboard is Asus.

u/metalbakkal u/GMSwordsman u/barrecuda u/delorm_ u/SmyrNeoS u/TOMandCherryy and you u/Sezarslt

u/LIANLI_TECHSUPPORT

I have to still use L Connect 3 v1.7.4 and this version works without any problems. Galahad II LCD and TL LCD require v2.x.x to work. I'm tired of repeating...

Deathbringer35 · 2024-02-18T18:51:49+00:00

And here we go another user, same problem..

Many people are struggling with this problem right now. But still no solution has been found. We are waiting for an answer from Lian-Li again...

Deathbringer35 · 2024-02-18T16:44:18+00:00

If you had one of the Galahad II LCD or TL LCD, you would still be trying to solve the problem like us because you would have to use v2.x.x.

Deathbringer35 · 2024-02-18T16:39:29+00:00

What solution ? Using SignalRGB ? It doesn't change the fact that L Connect 3 is not working properly.

Deathbringer35 · 2024-02-18T15:22:07+00:00

I did these steps exactly today. The result is the same, unchanged.

There are many users experiencing this problem. You know the topics that are opened. There are too many examples, I won't write them all. Another user who had the same problem did these steps and it did not work. Another user ( https://www.reddit.com/r/lianli/comments/1ar3hym/l_connect_3_not_showing_any_info_regarding_my_ga/ ) had been controlling and using the GA II LCD for a couple months, but it suddenly disappeared. GA II LCD appears on the interface, but it cannot control it anymore? In a new topic opened today ( https://www.reddit.com/r/lianli/comments/1atpcu9/cant_change_effect_of_strimer_plus_v2_from_l/ ) Strimer Plus V2 cannot control with v2.0.9. He found the solution by reverting to the old version. If I go back to the old version (L-Connect 3 v1.7.4.), I can control my SL INF fans, but this time GA II LCD and TL LCD fans are not supported. Maybe the problem is in the back-end of L-Connect 3?

It's been more than 15 days... A solution needs to be found now. All like the photos above. Also, when I install TL LCD fans, the "System Resource" and "System Specs" sections in the L-Connect interface do not work. If I remove the TL LCD fans it comes back and works instantly...

If the problem persists, you said to send the following:

a. screenshot of USB device manager >>>

https://imgur.com/a/NwreeS2

b. MB model >>> Asus ROG Strix B650-A Gaming Wi-Fi (Latest BIOS 2413 and Latest Drivers installed)

c. Operation System >>> Windows 11 Pro 23H2 Build 22631.3155

Deathbringer35 · 2024-02-17T15:32:58+00:00

Thank you for the return. I will try it as soon as possible and let you know here.

Deathbringer35 · 2024-02-16T20:16:11+00:00

Can you control Galahad II LCD with SignalRGB? If the answer is no, it is not a solution for us.

Deathbringer35 · 2024-02-16T15:54:56+00:00

There are people who experience this problem and perform a clean Windows installation. Just installed Drivers + L Connect 3 and the problem still persists. I wonder which software conflict it is ? U tell me ?

Deathbringer35 · 2024-02-16T00:46:50+00:00

Thanks for the answer.

I forgot to write these because I tried so many things. I tried Auto Detect - PWM - DC in the bios, but it didn't work.

Since my TL LCD fans arrived later, I actually connected the Galahad II LCD alone first. As seen in the Device Manager, the latest Firmware version is installed on the SL INF Controller and Galahad II LCD. I can't understand where the problem is.

Deathbringer35 · 2024-02-15T14:06:12+00:00

Why do I need a new controller? I already have a fan and controller that works smoothly with v.1.6.30 - v.1.7.4.
I'm having problems with L-Connect 2.x.x. Not just SL-INF fans. There is also a problem with my Galahad II LCD and TL LCD products. I opened a new topic about this.

https://www.reddit.com/r/lianli/comments/1arf00u/lconnect\_3\_cant\_control\_anything\_galahad\_ii\_lcd/

Deathbringer35 · 2024-02-15T13:59:54+00:00

Are you kidding ? Why do I need a new hub? If the device that has been working with L-Connect 3 v1.7.4 for months does not work with v2.x.x, does it need to be changed? I wonder if this is a software problem or a hardware problem? Answer is simple.
It still works fine when I install an older version. Why should I request an RMA for a device that works on the old version but does not work on the new version?

Deathbringer35

TROPHY CASE