Hi there,
sorry for posting in wrong category if that's the case - the question regards to active studio monitor - but the part I'm interested in is the amplifier, more specifically the power section.
I purchased Eris E8, with which I'm fairly happy with. Bit too much white noise, but bearable. My question is - is it possible to bypass the 230V and power it directly from DC, so that for portable applications there won't be a need for inverter?
I suppose that's very general question without looking at schematics, for which I couldn't find any. Still, if the amp operates in push pull configuration, say +30V and -30V could be introduced at some point in the chain to get it fully working.
Where to start with this?
sorry for posting in wrong category if that's the case - the question regards to active studio monitor - but the part I'm interested in is the amplifier, more specifically the power section.
I purchased Eris E8, with which I'm fairly happy with. Bit too much white noise, but bearable. My question is - is it possible to bypass the 230V and power it directly from DC, so that for portable applications there won't be a need for inverter?
I suppose that's very general question without looking at schematics, for which I couldn't find any. Still, if the amp operates in push pull configuration, say +30V and -30V could be introduced at some point in the chain to get it fully working.
Where to start with this?
Among the handful of actice speaker schematics that I have, I did indeed find some that are regulating down their main supplies to +/-15 V. Mainly smaller (e.g. 5") models. Even then, at least one had AC detection circuitry. I found an 8" with two different transformer taps for 3 different sets of supplies, so no luck with this one.
You'll have to take a peek inside and perform some reverse-engineering, I'm afraid.
You'll have to take a peek inside and perform some reverse-engineering, I'm afraid.
That unit's specs don't mention noise (or input level even), which is worrying.
Since it has volume control built in, try turning that down and sending it a higher level signal, and if using one of the balanced inputs try changing to unbalanced - that might reduce noise.
Many active speakers have poor noise floors I'm afraid, and its something you definitely can notice in a studio monitor. There is no real excuse for it though.
I suspect their level adjustment circuit isn't great (ie passive).