More than one amp questions....

[bombtek]

Ok so,
Amp with no loop but with line out
To input of another amp with fx loop input, or main input?
Or, better question,
What are the options for connecting two or more amps together?

[Aso]

I am not sure I am following what you are trying to do.

Are you trying to run the line out from one amp into the input of another amp? Pretty sure this should be done.

If you want to run two amps and cabs at the same time get a A|B|Y switch to do this.

[bombtek]

Was going off of my mid 80s crate g212 owners manual that states the line out is used to connect to another amps input or to a tape recorder for recording.
Not really trying anything, as I do not want to fry any gear lol.

[Nightbat]

Preferably use an FX return
when talking about a line out, you're talking about a signal WAY hotter than a guitar feeding an amp (+6dB / -4dB)

[rstites]

Line out will nominally be +10 dB. It's a line level signal, ready to run direct to a mixing board (no mic preamp) or direct to a power amp. Also, professional level effects units typically are designed to run at line levels, so you can go through those and then reamp the output to another cabinet.

It's similar to how higher end guitar amps of the era worked. People complain about the SLO loop for example. The idea though was to pull of the DI out. Run that into an effects unit (or rack of units), then into a separate power amp and through a second (or pair for stereo) cabinet to get a wet effects sound along with a dry sound from the amp into the cab. Boogies of that era had more forgiving loops, but still were really designed to run that DI out to effects, or direct to board for the soundman to add effects.

[xenophobe]

It really depends on the amps themselves and what your actual plan on doing this is for...

I'd probably wire FX loop out to main amp input... as has been noted the line level output will be pushing harder so you could put that into a -db input on the other amp if it has one, if it does not, it could cause issues.