JBL VT4889 System Configuration Manual

Using crown I-Tech series For models VT4889, VT4888, VT4887, VT4881, VT4880 ...

PAGE GENERAL AMPLIFICATION NOTES & REQUIREMENTS…………………. 3 SUBWOOFER WIRING NOTES………………………………………………… 4 STANDARD AMPLIFICATION RACK NOTES REGARDING LIMITER SETTINGS……………………………..…….. 5 VT4887 & VT4881 TRANSDUCER COMPLEMENT.………………………………….…….. 6 AMPLIFIER CONFIGURATION OPTIONS VT4887 & VT4881 ARRAY WIRING……………………………………………. 7 VT4888 TRANSDUCER COMPLEMENT………………………………………… 8 AMPLIFIER CONFIGURATION OPTIONS VT4888 ARRAY WIRING…………………………………� ...

o For the purpose of this discussion: Crown I_TECH series amplifiers are used below. HF indicates High Frequency drivers, MF indicates Mid Frequency drivers, LF indicates Low Frequency drivers and VLF stands for Very Low Frequency drivers (subwoofers). o Equivalent amplifiers can be used as substitutions. o Users should observe differences in input sensitivity and maximum available power at a given impedance load. o Users may choose to use the same size amplifier to power all components / passbands. o DSP crossover presets provided by JBL assume that the same amplifier models with equal voltage gain ...

o VT4880: users may choose to wire both 2258 (18”) components in parallel to one (1) channel of a an I-T amp for (4) ohms load. In this case each amplifier channel drives one VT4880. If two VT4880 are wired in parallel, the load is two ohms. Three 4880s can not wired in parallel in this situation. o VT4881: users may choose to wire both coils in a single 2256G component in parallel to one (1) channel of an I-T amp for (4) ohms load. In this case each amplifier channel drives one VT4881. If two VT4881 are wired in parallel, the load is two ohms. Three 4881s can not wired in parallel in this situation. USERS MUST ...

• The recommended limiter threshold settings provide 3 dB of headroom before the component or bandpass peak voltage is reached. • The component or bandpass peak voltage is 6 dB above the voltage used at continuous maximum power. • These settings assume the use of a I-T amplifier in stereo mode with input sensitivity of 1.3V for a voltage gain of 36 dB. • If a different amplifier is used or if the input sensitivity is changed, the limiter threshold must be re-calculated. • Not all DSP controllers behave the same way. Please study your unit accordingly. • Users must take into consideration that the dig ...

Model Speakon NL8 Terminals Per box Nominal Impedance per transducer Nominal Impedance per Passband AES Power 100 HR Rating per Transducer Peak Power Rating per Transducer Recommended Power per Passband HF 2407H Pins 4± 1 x 2 8Ω 8Ω 25W 100W 450W MF 2104H Pins 4± 1 x 4 8Ω 8Ω 50W 200W 450W LF 2168J Pins 3± 2 x 2 16Ω 8Ω 350W 1400W 1000W VL F 2256G Pins 1± & 2± 3 x 1 2 x 8Ω 8Ω + 8Ω 600W 2400W 1200W 1 PASSIVELY CROSSED OVER MID/HIGH FREQUENCY SECTION 2 LF SECTION HAS TWO 8” COMPONENTS WIRED IN PARALLEL. 3 SINGLE COMPONENT WITH TWO VOICE COILS INDEPENDENTLY WIRED Amplifier Configura ...

Ensure that each conductor in the cable is a minimum of #13 AW (3-4mm). JBL VT4887: The MF & HF section of a VT4887 has an internal passive crossover network. =8Ω Pins 4± This network connects two 2407H HF drivers (8Ω) wired in series and four 2104H MF (8Ω) wired in Series / Parallel. The LF section of a VT4887 has two 2168J drivers (16Ω) wired in Parallel. =8Ω Pins 3± JBL VT4881: The single 15" 2256G VLF device has two 8Ω coils wired independently. =8Ω/8Ω Pins 1±, 2± 2 I-T6000 Power Amplifiers JB ...

Model Speakon NL8 Terminals Per box Nominal Impedance per transducer Nominal Impedance per Passband AES Power 100 HR Rating per Transducer Peak Power Rating per Transducer Recommended Power per Passband HF 2431H Pins 4± x 2 8Ω 16Ω 75W 300W 300W MF 2106H Pins 3± x 4 8Ω 8Ω 100W 400W 800W LF 2262H Pins 1± & 2± x 2 8Ω 8Ω + 8Ω 700W 2800W 2500W Amplifier Configurations: Four VT4888 / Two I-T4000s, One I-T8000 Amplifier Amplifier Channel Speakon NL8 Terminals Driving Nominal Impedance at Pins Amplifier Power Rating at Nominal Impedance Power Available to Each Bandpass Bandpass Peak Voltage VAC Limiter ...

Amplifier Amplifier Channel Speakon NL8 Terminals Driving Nominal Impedance at Pins Amplifier Power Rating at Nominal Impedance Power Available to Each Bandpass Bandpass Peak Voltage VAC Limiter Threshold dBu Ch 1 Pins 4+/- 6 x 2431H 5.7 ohms 1700W 283W 56V -3 I-T4000 Ch 2 Pins 4+/- 6 x 2431H 5.7 ohms 1700W 283W 56V -3 Ch 1 Pins 3+/- 12 x 2106H 2.7 ohms 1900W 158W 112V 3 I-T4000 Ch 2 Pins 3+/- 12 x 2106H 2.7 ohms 1900W 158W 112V 3 Ch 1 Pins 2+/- 3 x 2262H 2.7 ohms 3750W 1250W 130V 2.5 I-T8000 Ch 2 Pins 2+/- 3 x 2262H 2.7 ohms 3750W 1250W 130V 2.5 Ch 1 Pins 1+/- 3 x 2262H 2.7 ohm ...

Ensure that each conductor in the cable is a minimum of #13 AWGuage (3-4mm). JBL VT4888: The HF section of a VT4888 has two 2431H drivers (8Ω) wired in Series. =16Ω Pins 4± The MF section of a VT4888 has four 2106H drivers (8Ω) wired in Series / Parallel =8Ω Pins 3± The LF section of a VT4888 has two 2262H drivers (8Ω) wired Independently =8Ω / 8Ω Pins 2± / 1± 3 x Power Amplifiers (2Ω Load on LF Passband) 4 x Power Amplifiers (recommended) OR JBL VerTec VT4888 Line Array Power Amplifier configuratio ...

Power Amplifier configurations - 6 Box Array IMPORTANT NOTES All wiring configurations shown above use 8-conductor speaker cables terminated with Neutrik NL8 "Speakons". Ensure that each conductor in the cable is a minimum of #13 AWGuage (3-4mm). JBL VT4888: The HF section of a VT4888 has two 2431H drivers (8W) wired in Series. =16W Pins 4± The MF section of a VT4888 has four 2106H drivers (8W) wired in Series / Parallel =8W Pins 3± The LF section of a VT4888 has two 2262H drivers (8W) wired Independently =8W / 8W Pins 2± / 1± ...

Model Speakon NL8 Terminals Per box Nominal Impedance per transducer Nominal Impedance per Passband AES Power 100 HR Rating per Transducer Peak Power Rating per Transducer Recommended Power per Passband HF 2435H Pins 4± x 3 5.3Ω 16Ω 75W 300W 300W MF 2250H Pins 3± x 4 8Ω 8Ω 300W 1200W 1200W LF 2255H Pins 1± & 2± x 2 8Ω 8Ω + 8Ω 600W 2400W 800W + 800W Amplifier Configurations: Four VT4889 / One I-T4000, One I-T6000, One I-T8000 Amplifier Amplifier Channel Speakon NL8 Terminals Driving Nominal Impedance at Pins Amplifier Power Rating at Nominal Impedance Power Available to Each Bandpass Bandpass Pea ...

Amplifier Amplifier Channel Speakon NL8 Terminals Driving Nominal Impedance at Pins Amplifier Power Rating at Nominal Impedance Power Available to Each Bandpass Bandpass Peak Voltage VAC Limiter Threshold dBu Ch 1 Pins 4+/- 9 x 2435H 5.7 ohms 1700W 200W 100V 2 I-T4000 Ch 2 Pins 4+/- 9 x 2435H 5.7 ohms 1700W 200W 100V 2 Ch 1 Pins 3+/- 12 x 2250H 2.7 ohms 3750W 312W 150V 3.5 I-T8000 Ch 2 Pins 3+/- 12 x 2250H 2.7 ohms 3750W 312W 150V 3.5 Ch 1 Pins 2+/- 3 x 2255H 2.7 ohms 3750W 1250W 120V 2 I-T8000 Ch 2 Pins 2+/- 3 x 2255H 2.7 ohms 3750W 1250W 120V 2 Ch 1 Pins 1+/- 3 x 2255H 2.7 ohms 3750W 1250W 120V 2 I- ...

Ensure that each conductor in the cable is a minimum of #13 AWGuage (3-4 mm). JBL VT4889: The HF section of a VT4889 has three 2435H drivers (5.3Ω) wired in Series. =16Ω Pins 4± The MF section of a VT4889 has four 2250H drivers (8Ω) wired in Series / Parallel =8Ω Pins 3± The LF section of a VT4889 has two 2255H drivers (8Ω) wired Independently =8Ω / 8Ω Pins 2± / 1± 3 x Power Amplifiers (2Ω Load on LF Passband) 4 x Power Amplifiers (recommended) OR JBL VerTec VT4889 Line Array Power Amplifier config ...

Ensure that each conductor in the cable is a minimum of #13 AWGuage (3-4 mm). JBL VT4889: The HF section of a VT4889 has three 2435H drivers (5.3Ω) wired in Series. =16Ω Pins 4± The MF section of a VT4889 has four 2250H drivers (8Ω) wired in Series / Parallel =8Ω Pins 3± The LF section of a VT4889 has two 2255H drivers (8Ω) wired Independently =8Ω / 8Ω Pins 2± / 1± 4 x Power Amplifiers (recommended) JBL VerTec VT4889 Line Array Power Amplifier configurations - 6 Box Array ...

Ensure that each conductor in the cable is a minimum of #11 AWGuage (3-4 mm). Users might also consider using TWO NL8 cables for each 4 boxes which are wired in parallel at the rack for a total of 4 cables running to the cluster. JBL VT4889: The HF section of a VT4889 has three 2435H drivers (5.3Ω) wired in Series. =16Ω Pins 4± The MF section of a VT4889 has four 2250H drivers (8Ω) wired in Series / Parallel =8Ω Pins 3± The LF section of a VT4889 has two 2255H drivers (8Ω) wired Independently =8Ω / 8� ...

Model Speakon NL4 Terminals Per box Nominal Impedance per transducer Nominal Impedanc e per Passband AES Power 100 HR Rating per Transducer Peak Power Rating per Transducer Recommende d Power per Passband VLF 2 x 2258H Pins 1± & 2± x 2 8Ω 8Ω + 8Ω 800w 3200W 1600W Amplifier Configurations: Two VT4880 / One I-T4000 Amplifier Amplifier Channel Speakon NL4 Terminals Driving Nominal Impedance at Pins Amplifier Power Rating at Nominal Impedance Power Available to Each Bandpass Bandpass Peak Voltage VAC Limiter Threshold dBu Ch 1 Pins 1+/- & 2+/- 2 x 2258H 4 ohms 2000W 1000W 120V 4 I-T4000 Ch 2 Pins 1+/- & 2+/- ...

Ensure that each conductor in the cable is a minimum of #11 AWGuage (3-4 mm). JBL VT4880: The VT4880 has two 2258H drivers (8W) wired Independently =8W / 8W Pins 2± / 1± JBL VerTec VT4880 Power Amplifier configurations - 2 or 4 Box Arrays ...

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