User manual ROLLS LA120
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Manual abstract: user guide ROLLS LA120
Detailed instructions for use are in the User's Guide.
[. . . ] The compressor keeps things nice and level--it boosts the quiet things and attenuates (lowers the gain) the louder signals. The LA120 usess an automatic ratio mode where it follows the mix and sets the attack and release rates for you. This means that it starts compressing a signal that goes over the threshold at a gradual, smooth rate. [. . . ] If obvious physical damage is noticed, contact the carrier immediately to make a damage claim. We suggest saving the shipping carton and packing materials for safely transporting the unit in the future. Please complete the Warranty Registration Card and return it to the factory.
SPECIFICATIONS
Frequency Response Input Impedance THD + Noise S/N Ratio Indicators Input/Output jacks Size (WxHxD): Weight: Power: 20 Hz - 40 kHz 10K balanced 1M unbalanced <0. 1% typical 90 dB 1: Active LED 1: Analog Meter XLR balanced 1/4" unbalanced 7. 6 x 1. 6 x 5. 4 (194mm x 40mm x 135mm) 2. 5 lbs (1. 135 kg) 12 VAC 300ma (Adapter included in U. S. models)
BLOCK DIAGRAM
150V
150V
INPUT 2 OUTPUT LEVEL
Photocell Output Buffer
2
THRESHOLD COMP/LIM ACTIVE SWITCH
OUTPUT
20
10 6
31 0 24 VU
4
1
FRONT PANEL DESCRIPTION
TUBE COMPRESSOR LIMITER
31 0 24 10 6 20 VU
CONNECTION
LA120
Connect the Input of your LA120 to either a mixing board's channel insert (explained below), or to the output of a preamplifier. Connect the Output of the LA120 to an equalizer or another piece of signal processing equipment, then to an amplifier or recording device. The tip being the "send" and the ring being the "return". If this is the case with your mixer, use an insert cable, like the one shown below, and connect the "tip" cable to the LA120 Input, and the "ring" cable to the LA120 Output.
ACTIVE
-O O
0
- 20
+20
LEVEL
THRESHOLD
COMP/LIM
GAIN REDUCTION
ACTIVE Switch: Engages and disengages the compression. THRESHOLD: Sets the level at which the income signal must overcome in order for the LA120 to begin compressing. COMP/LIM Switch: Switches the LA120 from Compression mode, to Limiting mode (explained in the Operation section of this manual). NOTE: When switched in, the LA120 is in Compression mode;when switched out, the LA120 is in Limiting mode. VU Meter: Indicates the amount of gain reduction.
Connects to tip
Connects to ring
REAR PANEL DESCRIPTION
MADE IN THE U. S. A. SERIAL NUMBER
For recording, the LA120 should be connected in a channel's insert. If this is not possible, try to get the LA120 connected between the microphone (or instrument) preamp, and the mixing board channel. Do not plug a microphone directly into the LA120 because it is not a preamplifier. If you are using the LA120 with an instrument, place it after your preamp and before your effects. SAMPLE SETTINGS Note: The examples given are starting suggestions only. For light compression such as vocals or program compression, set the THRESHOLD control at approximately 1 O'clock and press the COMP/ LIM switch in for compression. For more applications requiring more compression such as instruments, decrease the THRESHOLD to 10 to 12 O'clock. [. . . ] IN NO EVENT SHALL WE BE LIABLE FOR ANY SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR BREACH OF THIS OR ANY OTHER WARRANTY, EXPRESSED OR IMPLIED, WHATSOEVER. Some states do not allow the exclusion or limitation of special, incidental or consequential damages so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
5
Bellari is an innovative audio electronics company devoted to providing quality tube-based signal processors and amplifiers. [. . . ]
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