Page 3 - Introduction
Introduction Congratulations on purchasing the Samson PL 1602 stereo mixer! Although thisunit is designed for easy operation, we suggest you first take some time to gothrough these pages so you can fully understand how we’ve implemented anumber of unique features. In this manual, we’ll provide you w...
Page 4 - System Features
System Features “PL” stands for “Program/Line” and the name describes the broad range ofsignals which can be handled by this powerful stereo mixer. In fact, the com-pact design of the PL 1602 belies an extraordinary versatility. Add excellentsound quality to the equation, and you’ve got a product wh...
Page 5 - Guided Tour - Overview; Channels
Guided Tour - Overview The following illustration shows an overview of the front panel of the PL 1602: 3 SAMSON -15 +15 0 -15 +15 HIGH 0 ∞ AUX 1L +10 0 LOW ∞ +10 LEVEL 0 ∞ AUX 2R +10 0 R BALANCE L -15 +15 0 -15 +15 HIGH 0 ∞ AUX 1L +10 0 LOW ∞ +10 LEVEL 0 ∞ AUX 2R +10 0 R BALANCE L -15 +15 0 -15 +15 ...
Page 6 - Guided Tour - Channels
Guided Tour - Channels 1: Equalizer (white) - These knobs determine the amount of boost or attenuation in eachof two frequency areas. The high and low frequency knobs provide 15 dB of cut or boostat 10 kHz and 100 Hz, respectively, with both utilizing a shelving curve. The EQ settingaffects both the...
Page 7 - Guided Tour - Main Section
5 Guided Tour - Main Section 1: Stereo Auxiliary Return Level (blue) - These knobs determine the inputlevel of signal arriving via the PL 1602’s two stereo Auxiliary returns. The “0”(2 o’clock) position of each knob indicates unity gain (no level attenuation orboost). Moving each knob counterclockwi...
Page 9 - Guided Tour - Rear Panel
Guided Tour - Rear Panel 1. Fuse sled - This contains a fuse holder and shows the currently selectedvoltage rating for your PL 1602. Make sure the voltage rating is correctly setbefore powering up! Fuse ratings are: 0.3 amp for 115 VAC and 0.15 amp for230 VAC. The voltage rating will normally be pre...
Page 11 - Connecting The PL 1602 - General Suggestions
9 Connecting The PL 1602 - General Suggestions The actual connections you’ll make to and from the PL 1602 will vary accordingto the environment you use it in and the particular equipment you have. In the“PL 1602 Applications” sections at the rear of this manual, you’ll find somesuggested setups. Her...
Page 13 - Setting Up and Using The PL 1602
11 Setting up your PL 1602 is a simple procedure which takes only a few minutes: 1. Remove all packing materials (save them in case of need for future service)and decide where the unit is to be physically placed—it can be mounted in anystandard 19" rack, requiring two rack spaces, or used on a t...
Page 14 - Setting the Correct Gain Structure
-40 +4 0 -10 TRIM -40 +4 0 -10 TRIM 12 You’re now ready to establish the correct gain structure—the key to getting thebest performance from the PL 1602, or from any mixer, for that matter. This is asimple procedure that ensures optimum input and output levels so that nounnecessary noise (caused by t...
Page 16 - Grounding Techniques
14 Grounding Techniques Hum and buzz are the biggest enemies you face when interconnecting a largenumber of different pieces of equipment to a central audio mixer. This isbecause each piece of equipment may operate at a marginally different voltage(this difference is called potential) and, when two ...
Page 18 - Using the Balance Control
16 Using the Balance Control The final Main output of the PL 1602 is stereo—that is, there are two discreteMain output jacks, labeled “left” and “right,” which will normally be routed to twodiscrete speakers.* Because of this, you will usually be working with a stereofield that ranges from hard left...
Page 19 - Using Equalization
17 Using Equalization One of the most exciting aspects of using a mixer such as the PL 1602 is theability to shape a sound, using a process called equalization. But there are fewareas of sound engineering more misunderstood than equalization, and, just asgood EQ can really help a sound, bad EQ can r...
Page 20 - Using Aux Sends and Returns
18 Using Aux Sends and Returns The PL 1602’s two Auxiliary sends allow you to combine the signal from multiplechannels and send the resulting mix to external devices such as effects proces-sors. When an Aux send knob is at the “0” position, the signal is routed withunity gain (that is, no boost or a...
Page 21 - Using Channel Inser ts
19 Using Channel Inser ts In addition to using Auxiliary sends and returns to access outboard devices, thePL 1602 also provides channel inserts for the first six input channels. Theseshould be used when you want to affect just one input signal, as opposed tosignal from several inputs—most often, thi...
Page 22 - Applications; Application 1 - Using The PL 1602 As A Main Live Mixer
20 Applications Here are four suggested applications for the PL 1602; bear in mind that your particular circumstance may dictatechanges in these suggested signal connections and routings. Application 1 - Using The PL 1602 As A Main Live Mixer The main connections here involve routing the PL 1602’s M...
Page 23 - Application 2 - Using The PL 1602 As An Onstage Monitor Mixer
21 Application 2 - Using The PL 1602 As An Onstage Monitor Mixer Here, the PL 1602 is receiving monophonic signal into its line inputs from the direct channel outputs of a main live mixer.Its Main output is connected to an outboard signal processor (typically an equalizer) prior to being routed to a...
Page 24 - Application 3 - Using The PL 1602 As A Keyboard Submixer
22 Application 3 - Using The PL 1602 As A Keyboard Submixer Here, various keyboards and MIDI tone generators are connected to the channel line inputs of the PL 1602, with stereosignals routed to “matched” consecutive odd- and even-numbered inputs. Signal processors are connected to Aux sendsand retu...
Page 25 - Application 4 - Linking The PL 1602 With Other Mixers
Applications Application 4 - Linking The PL 1602 With Other Mixers The provision of rear-panel Bus Inserts makes it easy to link multiple PL 1602s or to link the PL 1602 with other mixers,without the need to use up channel line inputs. As shown in this illustration, simply connect the main output of...
Page 26 - Appendix A: Block Diagram
Appendix A: Block Diagram 24 MIC 1 H.A. H.A. B.A. H.A. - + - + -50dBu - +4dBu LEVEL HIGH HIGH LOW LOW BALANCE AUX 2R CHANNEL 3/4 CHANNEL 9/10 CHANNEL 11/12 CHANNEL 13/14 CHANNEL 15/16 AUX 2 RETURN AUX 1L CH 1L INSERT 1L INSERT 2R CH 2R -30dBu - +4dBu 10Kohm B.A. MASTER L H.A. B.A. H.A. - + - + LEVEL...
Page 27 - Appendix B: Changing the PL 1602 Voltage
Appendix B: Changing the PL 1602 Voltage 25 Following are step-by-step instructions for changing the mains voltage of the PL 1602. NOTE: The voltage rating will nor-mally be preset correctly at the factory and will require no adjustment unless you use the PL 1602 in a country other thanthe one in wh...
Page 28 - Specifications
26 Specifications 1. Frequency Response (Unity) 20 Hz to 20 kHz ± 1 dB 2. THD+N (unity gain, 20 Hz - 20 kHz) Less than 0.05 % 3. Maximum Gain (Mic in to Main Mix out) 69 dB 4. Crosstalk (Ch - to - Ch, 1 kHz) -70 dB 5. Residual Noise -85 dB 6. Headphone Output Level 100 mW (32 Ω loaded) 7. Equalizer ...
