Manuale d’uso / di manutenzione del prodotto 508GTI del fabbricante JBL
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408GTi 508GTi AUTOMOTIVE NEO/KEVLAR MATCHED COMPONENT SYSTEM WITH CAST FRAME INSTALLATION GUIDE 408/508 MANUAL.QXP 7/17/98 11:21 AM Page 1.
T able of Contents Welcome to Club GT i .........................................................................3 About this Manual ..............................................................................3 Autosound at its Best ................
Welcome to Club GT i Thank you for purchasing the finest Automotive Component Systems JBL has ever produced. As a GT i Competition Series owner , you are a member of a select group of people who enjoy the most advanced mobile audio products available.
minimizing stray magnetic fields, this closed circuit magnetic assembly design concentrates the magnetic field on the voice coil where it provides superior performance. In the woofer/midrange drivers, this high concentration of magnetic power is coupled to a 2" Edge-wound Aluminum Wire V oice Coil on a High T emperature Fiberglass Former .
and high frequency transducers in a high quality system, we recommend you use either a high quality active crossover such as JBL ’s GTX47, GTX4 or GTX2 to provide optimum matching to your subwoofer or woofer/midbass loudspeaker .
Mounting Instructions Pick a mounting location after reading the recommendations in the Component Placement section of this manual. Installing the GTi System Crossover The GT i system crossover should be mounted securely to prevent damage to the crossover or possible loosening of wiring connections.
Woofer/Midrange Driver Mounting Mounting the Woofer/Midrange to Stock Hole Locations 1. Access the stock speaker location and remove the stock speaker . The 408 and 508GT i include mounting ring adapters which allow the speaker to be mounted in standard 4" and 5 1 / 4 " holes respectively .
Note: The metal grille is designed so that it can be covered with grille cloth if desired. Simply , remove the metal grille from the grille frame as shown in Figure E. Then use spray adhesive to glue and wrap the grille cloth to the metal grille. Push the metal grille with cloth back in the grille frame.
T weeter Surface Angle Mounting Instructions a) Using the Surface Angle Mount Template at the back of the manual, drill two screw holes at the desired mounting location, making sure to choose the correct tweeter orientation. Secure the Surface Angle Mount Adapter with two 3 ⁄ 4 " sheet metal screws as shown in Figure G.
T weeter Flush Mounting Instructions a) Use a hole saw or other tool and the Flush Mount T emplate at the back of this manual to make a hole for the flush mount cup in the desired location. Secure the metal spring to the Flush Mount Cup using one metal spring screw as shown in Figure H.
T weeter Flush Angle Mounting Instructions a) Follow steps a through c in the T weeter Flush Mounting Instructions. b) Secure the Flush Angle Mount Adapter to the Flush Mount Cup using two 5 ⁄ 16 " screws as shown in Figure J.
Wiring Use 2-conductor stranded type, insulated wire to connect the 408 and 508GT i Woofer/Midrange and tweeter to the included crossover , and the crossover to the amplifier as shown in Figure K. A minimum wire gauge of 18A WG is recommended, with larger size suggested for wire runs longer than 10 feet.
System Connections There are a variety of system options available with the 408 and 508GT i. The simplest configuration is to use the 408 and 508GT i full range. Although this will yield good sound, the best performance will be achieved in a high-end system which includes subwoofers and, optionally , midbass transducers.
used and at or above 3.5kHz if you are using an 18 or 24dB per octave crossover . In this configuration, the crossovers supplied with the 408 and 508GT i are not used. For tweeter protection, a 1.5A fast acting fuse should be installed in series with the tweeter .
crossovers near wires carrying high currents such as battery cables or wires leading to ammeters or tachometers. Distortion is usually the result of overdriving one or more components in the system. The problem is most likely insufficient amplifier power , or improper setting of gain controls.
16 Specifications: 408GT i 508GT i Frequency response: 80 – 22kHz 60 – 22kHz Recommended minimum High-Pass Crossover Frequency for Medium Power Operation: 80Hz 60Hz Continuous Power Handling With .
17 Thiele-Small Specifications: 408 GT i 508 GTi Free Air Resonance (Fs): 125Hz 100Hz Electrical Damping (Qes): 0.52 0.51 Mechanical Damping (Qms): 5.17 5.14 T otal Damping (Qt): 0.47 0.4 Equivalent V olume of Compilance (V as): 0.0388 cu. ft. (1.10 liters) 0.
19 Tweeter is angled in this direction Drill 3 / 32 " (2.9mm) hole in two places Drill 11 / 32 " (8.7mm) holes for wire feed through TWEETER SURF ACE ANGLE MOUNT TEMPLA TE 408/508 MANUAL.
21 Drill 3 / 32 " (2.4mm) holes for mounting screw Drill 11 / 32 " (8.7mm) holes for wire feed through TWEETER MOUNTING PLA TE TEMPLA TE 408/508 MANUAL.
23 Cut Hole Using 2 1 / 8 -2 1 / 4 " (54mm) hole saw TWEETER FLUSH MOUNT TEMPLA TE 408/508 MANUAL.QXP 7/17/98 11:21 AM Page 20.
408GTi 508GTi AUTOMOTIVE NEO COMPONENT SYST INSTALLATION GU JBL Consumer Products, Inc. 80 Crossways Park West Woodbury, NY 11797 8500 Balboa Blvd. Northridge, CA 91329 1-800-336-4JBL A Harman International Company NMGP/N:306385-001 5/94 408/508 MANUAL.
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 JBL 508GTI 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 JBL 508GTI - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso JBL 508GTI imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul JBL 508GTI ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il JBL 508GTI, 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 JBL 508GTI.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il JBL 508GTI. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo JBL 508GTI 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.
