Roland Prelude questions

[spydox]

Hi team,

I have a Roland Prelude which I think is a very rare keyboard, since I see almost no info on it anywhere.

My question is, can I turn off the internal speakers? The volume control ALSO controls volume to LINE OUT, and I only want to use the LINE OUT , not the internal speakers. I've read the manual front to back, and unless I missed it, they cannot be disabled. Seems like a major performance flaw.

As a follow-up, assuming the answer is no, how can I open the case to add a physical switch to the speakers? That's my next step if I can't control them.

TYVM

 

[goldi5210]

I found a note about turning off the internal speakers:
PHONES 1 & 2 socketsThis is where you can connect two pairs of optional
headphones (Roland RH-25, RH-50, RH-200 or RH-300).
Doing so will switch off the internal speakers.

I can't say whether this also has an effect on external speakers, since I don't have a Prelude.