10
Compressing Vocals
The LA-3A is very popular for vocals. First of all, like many pieces of “vintage” gear the LA-3A has a unique
“sonic signature” produced by the audio path transformers and discrete amplifier components. This, coupled
with the attack and release character, produces great results that bring vocals forward.
Bass Guitar
The LA-3A is also very popular for Bass. Again, the preset nature of the attack and release functions work well
for letting some transients through and then shaping the release in a smooth way. Coupled with the LA-3As
sonic signature, extremely desirable results can be achieved. Feel free to experiment with different setting of
the PEAK REDUCTION control.
Any Sound
In general, the LA-3A is very versatile and can be used on any sound, instrument, voice, choir, speech, etc.
when light to medium compression is called for. When driven hard (-10 or greater) the LA-3A may not be the
proper choice for fast tempo music and quick “staccato” sounds if natural transparency is desired. Often it is
just a matter of choice, so experiment!
Tricks
• Try connecting two compressors together in series. Try using an 1176 (or other compressor)
set for fast attack and release in front of an LA-3A. Try it the other way around, with the LA-
3A going into the other compressor.
• Split a signal, send one to the LA-3A and compress it medium to deep (-5 to -10), mix this
with the natural un-compressed signal. Try different levels of the mix, try using just a little of
the compressed signal or a lot of it.
RACK MOUNTING
Single Unit
The LA-3A shipping carton contains all the necessary brackets and hardware required for standard 19” rack
mount. Bracket and hardware locations are shown below. NOTE: The large half rack faceplate (45-0094) may be
mounted on either side if desired. All that’s needed is a medium Phillips screwdriver.
Instructions
• Attach both brackets to the LA-3A as shown below. Be sure to install the SPACER (45-0091)
with the large half RACK PANEL. DO NOT tighten the screws until all four are in place.
• Set the unit on a flat surface and tighten up all the screws while checking the alignment of
the rack ear and panels.
• In the event a second LA-3A is purchased, the LA-3A dual unit mounting kit will be necessary.
This includes two strapping plates (45-0093) and is available trough any UA dealer.
