Manuale d’uso / di manutenzione del prodotto CA9 del fabbricante Crest Audio
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O WNER’ S MANU AL PROFESSIONAL PO WER AMPLIFIERS Professional Power Amplifier Professional Power Amplifier Professional Power Amplifier Professional Power Amplifier Professional Power Amplifier Prof.
1. Save the carton and packing material even if the equipment has arrived in good condition. Should you ever need to ship the unit, use only the original factory packing. 2. Read all documentation before oper- ating your equipment. Retain all doc- umentation for future reference.
Crest Audio CA Series Power Amplifiers Page 3 Models CA2, CA4, CA6, CA9, CA12, CA18 Introduction Unpacking Installation and Mounting Front Panel Rear Panel Internal Configuration and Control Operation.
Page 4 Crest Audio CA Series Power Amplifiers Models CA2, CA4, CA6, CA9, CA12, CA18 Professional Power Amplifier Front height 5.25" 133mm Front width 19" / 483mm CA12, CA18 Front Vie w Professional Power Amplifier Front height 3.
Intr oduction Congratulations on your purchase of a ne w CA Series professional po wer amplifier , and thank you for your confidence in Crest Audio products. Y ou are among the gro wing number of audio professionals who hav e made Crest Audio one of the world’ s leading suppliers of professional and commercial/industrial audio sys- tems.
Fr ont P anel 1. Rack Mounting Ear s. T wo front panel mounting holes are provided on each mounting ear . 2. Optional Rack Handles. A v ailable from your authorized Crest Audio supplier . 3. Fan Outlet Grills. CA Series amplifiers are cooled by tw o, rear -mounted fans.
Rear P anel See Appendix E for information specific to model CA18. 10. Output Connectors (T wo versions, market dependent) CA Series amplif iers are supplied with either 5-way Binding Posts or Speakon connectors. Connection to the binding posts can be made with bare wire, banana plugs, or spade lug terminations.
13-14. Balanced 1/4" (TRS) & XLR Input Connectors. These connectors accept input signals on balanced TRS and XLR input plugs. See the figure at the left for information on polarity . Connectors for each chan- nel are in parallel; the unused connectors may be used for “loop through” con- nection to other amplifiers.
Operation Connecting P o wer / Cir cuit Size Requirements. CA Series amplifier po wer requirements are rated at: a) “idle” b) 1/8th po wer (“typical” music conditions) c) 1/3rd po wer (“continuous” music conditions) d.) maximum rated po wer (circuit breaker limited).
Connecting Inputs. Use either the XLR or 1/4-inch input connectors on the rear to supply audio signals to your Crest Audio CA Series amplifier . Both connectors accept balanced and unbalanced audio connections. (The CA Series amplifiers are conf igured standard with “Pin 2 hot” on XLR inputs.
Mode Selection. The three-position, recessed Mode Select switch (located on the rear panel) configures the amplif ier for either Stereo, Parallel or Bridged Mono Mode.
Page 12 Crest Audio CA Series Power Amplifiers Models CA2, CA4, CA6, CA9, CA12, CA18 A A B AB A 1 3- 2+ + A A B B •• • • + + + A B B A A B + + B B or A A or B A A A B AB A 1 3- 2+ + A A B B .
Crest Audio CA Series Power Amplifiers Page 13 Models CA2, CA4, CA6, CA9, CA12, CA18 A A B AB A 1 3- 2+ + • • • • B A NL4FC B A A B A A B B B A A or B or B A + - + - Speaker + to PIN 1 + Speak.
T ourClass ® Pr otection Every model in the CA Series incorporates T ourClass protection features. Deri ved from Crest Audio’ s extensi v e experience with the w orld’ s largest sound rental companies, the T ourClass group of circuits sets the industry standard for assured protection of internal amplifier circuits and all connected loads.
User Precautions Speaker Protection All loudspeakers ha ve electrical, thermal, and physical limits which must be observ ed to pre v ent damage or failure.
Maintenance A CA Series amplifier requires no routine maintenance other than occasional cleaning or replacement of the fan intake f ilters on the rear of the amplif ier . (This operation does not require any tools). Filters must be kept clear and clean to ensure proper v entilation through the unit.
Appendices.
Appendix A Crest Audio CA Series Power Amplifiers Models CA2, CA4, CA6, CA9, CA12, CA18 Appendix A - Amplifier Specifications 1kHz, 0.01% THD+N 8 Ω Stereo Power 4 Ω Stereo Power 2 Ω Stereo Power 8 Ω Bridged Mono Power 4 Ω Bridged Mono Power 20Hz-20kHz, 0.
Crest Audio CA Series Power Amplifiers Appendix B Models CA2, CA4, CA6, CA9, CA12, CA18 Appendix B - CA Bloc k Diagram BRIDGED - P ARALLEL - STEREO SWITCH R T 2 3 1 2 3 1 R T 2 / 3 PIN 2 / 3 + JUMPER .
Appendix C Crest Audio CA Series Power Amplifiers Models CA2, CA4, CA6, CA9, CA12, CA18 Stranded Cable Lgth. (m) 2 5 10 30 Wire Gauge (mm 2 ) 0.3 0.5 0.75 1.5 2.5 4 0.5 0.75 1.5 2.5 4 6 0.5 0.75 1.5 2.5 4 6 0.75 1.5 2.5 4 6 10 Power Loss (8 ohm load) 2.
Crest Audio CA Series Power Amplifiers Appendix C Models CA2, CA4, CA6, CA9, CA12, CA18 Stranded Cable Lgth. (ft.) 5 10 40 80 Wire Gauge (AWG) 18 16 14 12 10 18 16 14 12 10 18 16 14 12 10 8 18 16 14 12 10 8 Power Loss (8 ohm load) 0.81% 0.51 0.32 0.20 0.
Appendix D Crest Audio CA Series Power Amplifiers Models CA2, CA4, CA6, CA9, CA12, CA18 A B B A + + + A A B B B A A B XLR Pin + 2 3 GAIN Ø dBu 40x 20x + 1 3- 2+ A A B AB A Input Connection Section Ou.
Crest Audio CA Series Power Amplifiers Appendix E Models CA2, CA4, CA6, CA9, CA12, CA18 Appendix E CA18 P ower Amplifier - Special Functions XLR Pin + GAIN Ø dBu 40x 20x A B + AB A A A B A A B B A B B A + + + Designed & manufactured in the USA by: Crest Audio Inc.
Crest Audio Inc. 100 Eisenhower Dr., Paramus NJ 07652 USA TEL : 201.909.8700 FAX : 201.909.8744 http://www.crestaudio.com Printed in USA Choice of touring pr of essionals.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Crest Audio CA9 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Crest Audio CA9 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Crest Audio CA9 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Crest Audio CA9 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Crest Audio CA9, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Crest Audio CA9.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Crest Audio CA9. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Crest Audio CA9 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
