Question

I just got the Eris 5 monitors and wrongly got TS unbalanced instead of TRS balanced cables to connect the interface with.
It's possible to use it, but will it be safe in the long run?

(Extra question: is it normal for the monitors to get a little hot in the back?)

Answer 1

Absolutely no problem in plugging TS into TRS inputs. So, worry not. There may potentially be some impact on relative levels (i.e. TS lead relative to a TRS lead) and you will not get the noise-cancelling benefits of a balanced signal. But, it shouldn't matter that much in the situation you describe. Hope this helps.

Answer 2

it's normal for studio monitor speakers to get hot since they have amplifiers built into them.