[Translation from Japanese to English ] I have [A] and [B] in my possession. A: L2T525 B: SA3 These two product...

Original text

私の手元には[A][B]があります
A:LST525
B:SA3

この二つの製品はAのBL_Output からBのBL_Input へBL50-foot cableで接続されています

SA3のDIP switch設定は以下の値です
A,B,C,6,7,8:Down
9:Up(RoomcodeB)

現在SA3のスピーカから音が出ない状態です
確認したい内容は2点です
この構成でSA3からAと同時に同じ音を出すことは可能なのか
可能であればどのような設定が必要で不足物がある場合その製品を教えて下さい

Translation / English

I have [A] and [B] in my possession.
A: L2T525
B: SA3

These two products are connected from BL_Output of A to BL_Input of B by the BL50-foot cable.

The settings for the SA3's DIP switch are as below.
A,B,C,6,7,8:Down
9:Up(RoomcodeB)

Currently there is no sound coming out from the SA3 speaker.
There are 2 things I want to check.
Is it possible to make the same sound come out of SA3 at the same time as A with this configuration?
If it's possible, please tell me what settings I need and what products I'm lacking if there are any.

Translation / English

I have [A] and [B] with me.
A:LST525
B:SA3

These two products are connected from BL_Output of A to BL_Input of B by BL50-foot cable.

The settings of the DIP switch of SA3 are as follow.
A,B,C,6,7,8:Down
9:Up(RoomcodeB)

Currently, the sound does not come from the speaker of SA3.
I would like you to confirm with you two things.
Would it be possible to output the same sound from SA at the same time with A with this configuration?
If possible, what settings are necessary? In case anything is missing, please tell me what product I need to prepare.