Manuel d'utilisation / d'entretien du produit PL2404 du fabricant Samson
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Introduction 1 PL 2404 Features 1 Guided T our 3 Overview 3 Channels 4 Main Section 6 Rear Panel 8 Connecting The PL 2404 - General Suggestions 10 Setting Up and Using the PL 2404 12 Setting the Corre.
Introduction Congratulations on purchasing the Samson PL 2404 four-bus line mixer! The PL 2404 is optimized for use as a keyboard submixer in both live performance and recording applications, and it can be used wherever there are a number of stereo or mono line-level sources that need to mixed down to two or four outputs.
PL 2404 F eatures • An independent electronically balanced Control Room output (with dedicated level control) for connection to a power amplifier and studio monitors.
Guided T our - Over view The following illustration shows an overview of the front panel of the PL 2404: 3 -15 +15 MID 0 LOW ∞ R BALANCE L -15 +15 0 AUX +10 0 ∞ AUX +10 0 MUTE 3/4 ∞ +10 LEVEL R .
Guided T our - Channels 1: Equalizer (violet) - These knobs determine the amount of boost or attenuation in each of three frequency areas (up to 15 dB for each area).
Guided T our - Channels fully clockwise, only the even-numbered (right) input signal is heard (panned hard right). When only the odd-numbered (left) input is connected, the Balance knob functions as a constant level Pan control, allowing you to continuously place the incoming signal anywhere in the left-right stereo field.
6 Guided T our - Main Section 1: Auxiliary Return Level (orange) - These knobs determine the input level of signal arriving via the PL 2404 ’ s four stereo Auxiliary returns. The “ 0 ” (2 o ’ clock) position of each knob indicates unity gain (no level attenuation or boost).
7 Guided T our - Main Section 5: Meter - This ten-segment bar meter shows the continuous output level of the Main left/right output. For optimum signal-to-noise ratio, try to adjust all levels so that program material is usually at or around 0 VU, with occasional but not steady excursions to the red “ + ” segments.
Guided T our - Rear P anel 1: Power on-off switch - As you may have guessed, this is what you use to turn the PL 2404 on and off. To avoid potential damage to your speakers, turn the PL 2404 on before you turn on any connected power amps — and turn it off after the power amps are turned off.
9 Guided T our - Rear P anel 7: Mic inputs (channels 1 and 3) - Use these electronically balanced XLR jacks to connect a microphone to channel 1 and/or channel 3.
10 Connecting The PL 2404 - General Suggestions The actual connections you ’ ll make to and from the PL 2404 will vary according to the environment you use it in and the particular equipment you have. In the “ PL 2404 Applications ” sections at the rear of this manual, you ’ ll find some suggested setups.
11 • Matched signals (i.e. the stereo left-right outputs of a keyboard, drum machine, tone generator, effects processor, CD player, or tape recorder), should always be connected to the PL 2404 ’ s paired odd/even channels (i.e. 1L/2R, 3L/4R, etc.).
12 Setting up your PL 2404 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 any standard 19" rack, requiring four rack spaces, or used on a tabletop.
13 You ’ re now ready to establish the correct gain structure — the key to getting the best performance from the PL 2404, or from any mixer, for that matter.
14 Setting the Cor rect Gain Str ucture i. If you have a microphone connected to channel 1 or channel 3, the procedure for setting optimum microphone levels is as follows: sing or speak into the mic at the level you expect to use in performance while slowly raising the Level control for that channel to its 2 o ’ clock “ 0 ” position.
15 Grounding T echniques Hum and buzz are the biggest enemies you face when interconnecting a large number of different pieces of equipment to a central audio mixer.
16 Grounding T echniques If you ’ re using the PL 2404 in a fixed location such as a recording studio, you may want to invest the time and money into creating a star ground network . This is by far the best technique for avoiding grounding problems.
17 Busing , Submixing and Channel Muting As we ’ ve seen, the PL 2404 uses a system of four buses — pathways through which signal can be routed. The four PL 2404 bus faders control the overall level of the signal being output through the four buses.
Using the Balance Control The final Main output of the PL 2404 is stereo — that is, there are two discrete Main output jacks (and two discrete Control Room output jacks), labeled “ left ” and “ right, ” which will normally be routed to two discrete speakers.
19 Using Equalization One of the most exciting aspects of using a mixer such as the PL 2404 is the ability to shape a sound, using a process called equalization . But there are few areas of sound engineering more misunderstood than equalization, and, just as good EQ can really help a sound, bad EQ can really hurt it, so read on.
20 Using Aux Sends and Retur ns The PL 2404 ’ s four Auxiliary sends allow you to combine the signal from multiple channels and send the resulting mix to external devices such as effects proces- sors. When an Aux send knob is at its 2 o ’ clock “ 0 ” position, the signal is routed with unity gain (that is, no boost or attenuation).
21 Using Channel Inser ts In addition to using Auxiliary sends and returns to access outboard devices, the PL 2404 also provides channel inserts for the first four input channels.
Using PFL/AFL The PL 2404 provides two options for soloing input signals in headphones connected to the front panel headphone jack — Pre Fade Listen ( PFL ) and After-Fade Listen ( AFL ). The PFL/AFL switch in the main section allows you to choose between these two modes of operation.
23 Applications Here are four suggested applications for the PL 2404; bear in mind that your particular circumstance may dictate changes in these suggested signal connections and routings. Application 1 - Using The PL 2404 As A Recording Mixer The PL 2404 is optimized for use as a recording mixer with multitrack digital or analog recorders.
24 Application 2 - Using The PL 2404 As A Main Live Mixer Here, the PL 2404 ’ s Main output is connected to the input of a power amplifier, and, from there, to PA speakers.
25 Application 3 - Using The PL 2404 As A K e yboard Submixer Here, various keyboards and MIDI tone generators are connected to the channel line inputs of the PL 2404, with stereo signals routed to “ matched ” consecutive odd- and even-numbered inputs.
Applications Application 4 - Linking The PL 2404 With Other Mixers The provision of four rear-panel Bus Inserts makes it easy to link multiple PL 2404s or to link the PL 2404 with other mixers, without the need to use up channel line inputs. As shown in this illustration, simply connect the main output of another mixer to the PL 2404 Bus Inserts.
27 Appendix A: Block Diagram ALL MIC LEVEL INPUTS > 1.5K OHMS XLR BALANCED 3-H 1 , 2-L 0 , 1-Com LINE BALANCED OdB LINE BALANCED 0dB MIC 1, 3 HA CH1-3 (0DD) CH 1, 3 CH 2, 4 CH2-4 (EVEN) CH5-23 (0DD) CH5-24 (EVEN) CH INSERT 0dB 1. TRS BALANCED : Tip-H1, Ring-Lo, Sleeve-Com 2.
28 Specifications 1. Frequency Response (unity gain, line input 0 dB) Mic in to Main out 20 Hz to 30 kHz ± 1 dB Line in to Main out 15 Hz to 70 kHz ± 3 dB Aux return to Main out 15 Hz to 70 kHz ± 3 dB Mic in to Control Room out 20 Hz to 30 kHz ± 1 dB Line in to Control Room out 15 Hz to 70 kHz ± 3 dB 2.
Produced by On The Right Wavelength for Samson Technologies Corp. Copyright 1996, Samson Technologies Corp. Printed March 1996 Samson Technologies Corp.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Samson PL2404 c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Samson PL2404 - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Samson PL2404, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Samson PL2404 va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Samson PL2404, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Samson PL2404.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Samson PL2404. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Samson PL2404 ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
