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snatchman
Member
The link you posted is a picture of a Lexicon reverb not a line mixer..To answer your question, if the Behringer line mixer has unbalanced line inputs yes, you can hook your Alesis mixtube into.If it has balanced inputs this, will be more desirable..Good luck..
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ecc83
Well-known member
You really don't need to understand impedance "matching". In fact it is never done in audio. The only system you are ever likely to encounter that is "image matched" is a S/PDIF digital line (and video).
Nope! Not even guitar amps speakers, except in the sense of the words. You should connect a 16 Ohm speaker to the 16Ohm tap of the amp but this DOES NOT MEAN THAT THE AMP HAS A 16 OHM OUTPUT IMPEDANCE!
The actual output Z (short for imdce') could be anything from 10R to 60R for a valve amp and if a transistor, next to bugger all.
The signal LEVEL is the important part. So long as there is enough or you have the gain to make it up, virtually all modern gear has the low output Z and and high input Z needed for maximum signal transfer.
The passive electric guitar is a bit of a special case (but only a bit!). It has a MEDIUM (not high!) output Z and needs to "see" higher than about 100,000 Ohms for best results but there is nothing magical about "One Meg"!
Also do not fret about balanced ins and outs. Yes, often you will unbalance a system. Rarely causes a problem in the short cable runs of the home recordist but even if you get a bit more hum you will do no harm and there are ways to overcome any such issues.
In general you can connect ANY audio output to ANY audio input (but keep power amps only into speakers!) with impunity, just keep faders at minimum at switch on and advance them slowly!
Dave.
ashcat_lt
Well-known member
^^^It's amazing how far off from conventional wisdom this simple truth is. Some "line" outputs can be a little high for connection directly to some mic inputs, but there honestly aren't usually any "impedance issues" in our studios.
Level - proper gain staging - is almost always the issue. In that sense, sometimes in "unbalancing" a system you are sometimes dumping 6db of signal which may need to be made up later (essentially raising the noise floor), and is therefor suboptimal, but it usually won't hurt anything.
Level - proper gain staging - is almost always the issue. In that sense, sometimes in "unbalancing" a system you are sometimes dumping 6db of signal which may need to be made up later (essentially raising the noise floor), and is therefor suboptimal, but it usually won't hurt anything.
miroslav
Cosmic Cowboy
Yes....generally speaking you can. I have quite a lot of "mixed" gear wired into the patchbays, and I don't pay that much attention what I'm connecting to what during a sessions AFA impedance, but I do know that my -10 gear will not have the same levels as my +4 gear...so I just keep that in mind when looking at the meters and making level adjustments, and with low level outputs into high level inputs, you can pull up more noise.
With things like preamps, they tend to generally have lower input impedance than typical line inputs, so while you can plug stuff into them other than just mics, there could be some effect on the tone, and of course, the levels would have to be watched. AFA the preamp outputs (for the OP)...those are usually line level, so they are a perfect match for typical line level inputs....no issues at all.
Most modern audio gear is designed with low output impedance and very high input impedance, so whatever "mismatches" might exist, they become insignificant in most cases, and it's not critical to match impedances in general.
ido1957
9K Gold Member
Yes I plug my preamp line out into the line in of one of my mixer channels. XLR to TRS cable.