L1 Model I technical data

L1® Model I

portable line array system

TECHNICAL DATA SHEET

Key Features • High-performing, self-powered, portable two-way loudspeaker system designed for the production and reproduction of live music, music playback, speeches and A/V sound reproduction. • Spatial Dispersion™ loudspeaker technology produces wide, uniform sound coverage throughout the entire listening area – even off to the extreme sides. • Consistent front-to-back coverage, vertical line array design produces a loss of only 3 dB in sound pressure level per doubling in distance. • Integrated ToneMatch® presets for popular vocal microphones and instruments. • Integrated 4-channel mixer with wired remote control. • Lightweight, interlocking components for easy transport. • Expandable bass design supports the use of multiple B1 bass modules. • For smaller to larger spaces with audiences of up to 500.

Description The L1® Model I portable line array system is a high-performing, self-powered, two-way portable loudspeaker system designed for professional applications such as music playback, speeches and A/V sound reproduction. The L1 Model I system is engineered to deliver an acoustic performance of 40 Hz to 12 kHz (-3 dB). This loudspeaker system provides power for up to two B1 bass modules without the need for external amplification.

Descriptive Data System Specifications System Type

Self-powered, two-way

Calculated Maximum SPL @ 1m (continuous and peak)

115 dB continuous, 121 dB peak

Frequency Range (-3 dB)

40 Hz – 12 kHz

Frequency Range (-10 dB)

32 Hz – 14 kHz

Crossover Frequency

200 Hz 24 dB per octave

Nominal Coverage Pattern

160° H

Power System Power Rating

500 W

Low-Frequency Amplifier

250 W

High-Frequency Amplifier

250 W

Distortion at Rated Power

0.1% Max 30 Hz – 15 kHz

System Limiter

Dynamic Limiter

Transducers High-Frequency Drivers (Cylindrical Radiator® loudspeaker)

(24) 2.25" HF drivers

Low-Frequency Driver (B1 bass module)

(2) 5.25" LF drivers (8 Ω)

Channel 1 and Channel 2 Signal Indicators

Signal/Clip LED: Green = Signal Present Red = Clip

ToneMatch Presets

Selectable settings from 00 to 99

Trim

42 dB of range

Bose Professional Systems Division

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portable line array system

Channel 1 and Channel 2 (continued) Input Insert Channel Gain (¼" input) Channel Gain (XLR input) Max Input Signal Input Impedance Phantom Power Switch Channel 3 and 4 Line In Level Control Additional Connections Bass Module Out (for B1 only)

Bass Line Output

Data In Data Out Remote AC Mains Fuse Power Switch Remote Controls (available on the R1 Remote)

Physical Properties Grille Net Weight and Dimensions L1 Model I Power Stand L1 Model I Cylindrical Radiator® Loudspeakers

B1 Bass Module Shipping Weight L1 Model I Power Stand L1 Cylindrical Radiator Loudspeakers B1 Bass Module Voltages USA/Canada Europe Japan

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Balanced XLR / ¼" TRS combo jack with XLR loop through TRS line input -Infinity to +28 dB -Infinity to +48 dB +10 dBV (Mic) +18 dBV (Line) 2.2 kΩ (Balanced) 909 kΩ (unbalanced) +24 VDC Unbalanced ¼" TS jack 20 dB available gain (+2.6 dB at 12:00) NL4 connector (all pins wired for active sensing) Bass output signal for driving one or two B1 bass modules (1 B1 bass module = 8 Ω) (2 B1 bass modules = 4 Ω) Post-DSP bass signal output (180 Hz high-pass filter) Accepts a ¼" TRS cable Supplies low-frequency signal for connecting a PackLite® power amplifier or powered sub woofer Digital input for software update only S/PDIF digital output @ 44.1 kHz (CH1 + CH2 Sum) 7-pin din connector for RC1 IEC Connector AC Power fuse – T15AH / 250 V Switch system power on and off Master Volume Channel Volume (CH1 + CH2) Treble: +/- 10 dB high-pass filter @ 10 kHz (CH1 + CH2) Mid: +/- 10 dB band-pass filter @ 1 kHz (CH1 + CH2) Bass: +/- 10 dB low-pass filter @ 40 Hz (CH1 + CH2) Powder-coated steel 36.5 lbs. (16.7 kg) 5" H x 26" W x 26" D (127 mm x 660 mm x 660 mm) L1 Model I Cylindrical Radiator® loudspeaker top: 16.9 lbs. (7.4 kg) 43" H x 3.5" W x 4" D (1105 mm x 89 mm x 105 mm) L1 Model I Cylindrical Radiator® loudspeaker bottom: 17 lbs. (7.4 kg) 43" H x 3.5" W x 4" D (1105mm x 89 mm x 105 mm) 26.6 lbs. (12.1 kg) 14.5" H x 10.25" W x 17.75" D (381 mm x 260 mm x 450 mm) 56 lbs. (25.4 kg) 43 lbs. (19.5 kg) 30 lbs. (13.6 kg) 100-120 V 50 / 60 Hz 1000 W 220-240 V 50 / 60 Hz 1000 W 100 V 50 / 60 Hz 1000 W

TECHNICAL DATA SHEET

Descriptive Data (continued)

L1 Model I ®

portable line array system

TECHNICAL DATA SHEET

26.0" (660 mm)

Mechanical Diagrams

L1 Model I

4.7" (120 mm)

26.0" (660 mm)

42.4" (1077 mm)

81.7" (2074 mm)

39.3" (997 mm)

3.5" (89.0 mm)

26.1" (662 mm)

26.0" (660 mm)

3.5" (89.0 mm)

81.7" (2074 mm)

17.75" (450 mm)

4.7" (120 mm)

14.5" (368 mm)

42.4" (1077 mm)

10.25" (260 mm)

17.75" (450 mm)

39.3" (997 mm)

B1 Bass Module

26.1" (662 mm)

26.0" (660 mm)

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Ch1 Line Out +1

Input-LINE

+20dB

Ch 4 IN

Ring = Send Tip = Return

5K 10C

2-Ch.

Input-MIC

A/D

D/A

DSP

0dB +1

+24v Off

Volume Control

+1

+1

-12 to +30 dB

0dB

Data In (SPDIF)

Data-Out

Sig/OL

+8 to +50 dB

0dB

Ring = Send Tip = Return

Trim

D/A

Bass Send

A/D

(SPDIF)

SPDIF Rcvr

Master Vol Ctrl

SPDIF Xmiter

LPF -1.5dB

LPF

Power / Protect / Diagnostic

1 2 3 8 4 7 6 5 9

+5

+1

LineSource Top+Bottom

Amp1 Power Amp

Bass Slave Sense 5K 10C

µC

3

Ch2 Line Out Input-MIC

+1

2

1

0 1 0 1

Amp2

Ch1 Ch2 PRESET

Power Amp

Bass 3

+24

+24v Off

-1 8/4 ohm Sense

PHANTOM

Ch1

+5

Ch2 High Mid Low

Remote Sig/OL

Sig/OL

Level

Master

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1+

2

1-

8/4 ohm Sense

(250W 4ohms) 2-

2+

1

4

-1.5dB

-1

A/D

0dB

Ch2 Insert

+1

Ch2

+1

Digital

+24

PHANTOM

20K 15A

A/D

Trim

3

2

Input-LINE

Level

Ch1 Insert

Sig/OL

+8 to +50 dB 1

20K 15A

Ch 3 IN

-1

-20dB

Ch1

Level

+20dB 1

3

+1

2

TECHNICAL DATA SHEET

Signal Flow Block Diagram

L1 Model I ®

portable line array system

TECHNICAL DATA SHEET

Polar Plots ¹⁄³ Octave Horizontal 125 Hz Octave Band

250 Hz Octave Band

0

0

30

330

30

60

300

-30 -24 -18 -12 -6

90

0

120

6

270

240

150

0 30

330

60

-30 -24 -18 -12 -6

0

120

150

400 Hz

250 Hz

500 Hz

160 Hz

315 Hz

630 Hz

0

300

-30 -24 -18 -12 -6

0

120

6

270

240

-30 -24 -18 -12 -6

0

120

6

270

240

150

210

330

60

300

-30 -24 -18 -12 -6

90

120

0

6

270

240

150

180

210 180

800 Hz

1600 Hz

3150 Hz

1000 Hz

2000 Hz

4000 Hz

1250 Hz

2500 Hz

5000 Hz

8000 Hz Octave Band

16000 Hz Octave Band

0

0 330

30

60

300

-30 -24 -18 -12 -6

120

0

6

270

240

150

0 30

300

90

210

4000 Hz Octave Band

330

60

180

90

210

200 Hz

60

270

180

125 Hz

30

6

240

100 Hz

330

0

120

150

2000 Hz Octave Band

30

-30 -24 -18 -12 -6

90

210

0

150

300

180

1000 Hz Octave Band

90

270

240

180

30

6

330

60

300

90

210

500 Hz Octave Band

210 180

330

60

300

-30 -24 -18 -12 -6

90

120

0

6

270

240

150

210 180

6300 Hz

12500 Hz

8000 Hz

16000 Hz

10000 Hz

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portable line array system

TECHNICAL DATA SHEET

Beamwidth

Angle (degrees)

360

100

10

20

100

1000

10000

20000

Frequency (Hz)

Directivity Index and Q Directivity Index (dB)

30

1000

25 20

100

Q

15 10

10

5 0

1 20

100

1000

Frequency (Hz)

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10000

20000

L1 Model I ®

portable line array system

The system shall be a multiple-driver, full-range portable loudspeaker system with internally supplied power amplification, active equalization and external bass modules. The transducer complement shall consist of twenty-four 2.25" (57 mm) high-excursion, highfrequency drivers mounted in a line array loudspeaker design coupled with two 5.25" (133 mm) high-excursion, low-frequency drivers mounted in a vented bass enclosure. The loudspeaker array shall be wired in a series/ parallel configuration. The nominal horizontal beamwidth of the loudspeaker shall be a narrow band of sound confined to the top and bottom of the array. The system’s power stand shall incorporate a ported venting system for the low-frequency driver, tuned for 40 Hz. The power amplification for transducers shall be supplied by the integrated power stand providing 500 W continuous pink noise, band-limited from 40 Hz to 12 kHz (-3 dB). The loudspeaker power stand shall serve as a support mechanism for the loudspeaker array. Channels 1 and 2 shall each provide +24 V phantom power and shall be equipped with one balanced XLR / ¼" TRS combo jack with XLR loop through with assignable equalization presets, one ¼" balanced TRS insert, and one balanced XLR line output receptacle. The aforementioned channel volume and equalization attenuation control shall be accessible via hardwired remote control.

TECHNICAL DATA SHEET

Engineers’ and Architects’ Specifications

Safety and Regulatory Compliance The L1 Model I system complies with the following standards: • UL/IEC/EN 60065 7th Edition Safety Standard for Audio and Video Equipment • Ecodesign Directive 2005/32/EC This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. This product complies with the Canadian ICES-003 Class A specifications. This product conforms to the EMC Directive 289/336/EC Under standards: EN55103-1 & 2: 1997, Environment 2.

How our Loudspeakers are Measured Calculated Max SPL Calculated based on input sensitivity and maximum input power rating exclusive of power compression.

More Information

Technical literature and other materials are available at pro.Bose.com.

Channels 3 and 4 shall each provide an unbalanced ¼" TS receptacle with line-level attenuation control. The remote control master volume shall attenuate the overall levels of Channels 3 and 4. The system output connectors shall provide one NL4 receptacle capable of distributing power for up to two low-frequency B1 bass modules and one ¼" TRS line-level receptacle for supplying signal to a PackLite® extended bass package. The enclosure of the Cylindrical Radiator® loudspeaker shall be constructed of extruded aluminum. The system's power stand shall be constructed of polypropylene materials. The total assembled system height shall be 82.75" (2102 mm), while the total assembled system weight shall be 90 lbs. (40.8 kg). The loudspeaker shall be the Bose® L1® Model I portable line array system.

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L1 Model I ®

portable line array system Product Codes System* L1® Model I System 120 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PC 042827 L1 Model I Bass System 240 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PC 042830

Available Accessories B1 Bass Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PC 032494 PS1 Power Cord, packaged as accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PC 035393 R1 Remote, packaged as accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PC 035394 R1 7-pin Cable (5 m), packaged as accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PC 035403 R1 7-pin Cable (10 m), packaged as accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PC 035411 Power Stand Fuse Kit (120 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PC 044180 T1 ToneMatch® Audio Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PC 042826 T1 ToneMatch Audio Engine Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PC 042533 T1 ToneMatch Audio Engine Mic Stand Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PC 042535 T1 ToneMatch Cable Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PC 042536 T1 ToneMatch Carry Bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PC 042534

Replacement Parts Carry Bag – L1 Model I Cylindrical Radiator® Loudspeaker (2 bags) . . . . . . . . . . . . . . . . . . . . PC 044023 Carry Bag – L1 Model I Power Stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PC 044025 Protective Slip Cover – B1 Bass Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PC 035025 *Includes (1) B1 bass module.

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All information subject to change without notice. ©2009 Bose Corporation. Bose, L1, Spatial Dispersion, ToneMatch, Cylindrical Radiator and PackLite are trademarks of Bose Corporation in the U.S. and other countries. C_008054