Good morning.
I don't know if my query is in the right forum.
Thank you very much in advance.
I bought the Tyros 2 with a damaged TRS MS 02 subwoofer unit. At first minute it works well, but soon you start to hear knocks or it goes out and nothing sounds.
The person who sold me the keyboard told me that he was using a Home Cinema subwoofer replacing TRS MS 02 subwoofer, and keeping the Tyros satellites, but using cables other than those of the Tyros and using the Tyros Line Out as an output. I don't know what replacement subwoofer he used.
I can use some external amplified monitors, but I prefer to use the keyboard-specific satellites for space and placement reasons. That's why I've bought a used subwoofer (it works) and I've made the connections it told me at the time, but the "invention" doesn't work.
Below are the features of the TRS-MS 02 and the replacement subwoofer.
YAMAHA TRS-MSFrequency response 32 Hz to 20 kHz (I don't know if you're referring to the response of the subwoofer or rather to that of the whole set)
Satellite Speakers
20 W + 20 W (1 kHz, 4 Ω at T.H.D.=10%)
Tweeter.... 1.9 cm (3/4") dome, magnetic shielding
Midrange............... 8 cm (3") cone, magnetic shielding
Subwoofer
40 W (100 Hz, 5 Ω at T.H.D.=10%)
16 cm (6.5") cone, magnetic shielding
Power consumption: 65 W.
As you konw, a combo RCA pin/8-pin cable comes out of the keyboard and enters the subwoofer and returns to the keyboard.
The satellites are connected by 1 RCA cable each coming from other keyboard outputs.
SUBWOOFER I PURCHASED FOR REPLACEMENT:
YAMAHA YST SW005 (SELF-POWERED ACTIVE)
Driver 16 cm cone woofer
Output 55 W/ 5 Ω
Frequency response: 30 Hz to 200 Hz
To connect the keyboard to the subwoofer:
Keyboard Output: Line Out L and R (one cable for each channel, 6.5 mm TRS output (I think) that go into the two inputs of the subwoofer "INPUT 1 FROM AMPLIFIER" to bare cable.
To connect the subwoofer to satellite speakers:
Diagrams of the subwoofer connection can be found on pages E4 to E7 of the manual at the link.
YST-SW005.pdf (yamaha.com) (I don't know if the link will work).
https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://europe.yamaha.com/files/download/other_assets/5/327705/YST-SW005_G_en.PDF&ved=2ahUKEwiv56jvhbqFAxXQUqQEHQ5-B1MQFnoECBMQAQ&usg=AOvVaw1QuAE3KiwuS8jTXDdH1J9oFrom the subwoofer "OUTPUT TO SPEAKERS" output to bare cable, and input to each satellite with RCA.
RESULT:
The bass is heard (but at a rather lower level than with the Tyros subwoofer, which is less powerful) and more muted.
Only one of the satellites can be heard. You hear something very low, with your ear glued to it, and with the subwoofer volume and keyboard output at maximum.
When trying to change the order of the pair of bare RCA cables of both, in no case do they both sound, and even depending on how they are combined, the subwoofer (bass) stops playing.
The INPUT 1 FROM AMPLIFIER, according to manual of the subwoofer YAMAHA YST SW005, is to be connected to the speaker output of an amplifier that does not have a specific PRE OUT subwoofer output. I don't know if a signal previously amplified by the amplifier should enter this input.
DOUBTS:
1. The Tyros doesn't have an internal amplifier, right? therefore, the signal leaves the keyboard to the TRS MS 02 unamplified, and therefore also to any external team.
2. I don't know if the YST 005 subwoofer, through this input is able to amplify the signal coming from the keyboard (I think unamplified) to power the satellites, as I think the TRS MS 02 subwoofer does. Perhaps it is only prepared to receive previously amplified signals, which is why satellites sound at such a low volume.
3. Maybe the stripped RCA cables at the subwoofer output and with RCA (two-way) connector to the satellite speacker are not correct? The cables are firmly attached to the output tabs of the subwoofer. The volume output controls on the Tyros and subwofer are maxed out.
4. Before I discard the subwoofer I'd like to know if what I want to do is perhaps not possible, or at least with this particular subwoofer, or if I'm doing something wrong, or if something can be done to make it work.
5. Has anyone had the same problem as me with the TRS MS 02 subwoofer? Is there any easy solution without taking it to an SAT?
I don't know if I've been able to explain myself well. The forum app doesn't allow you to attach photos, I think.
Sorry for the length and that what I am proposing is so basic or silly.
Thank you.
Best regards.