JBL 2105-H Brochure

FEATURES:

50 W continuous program 22 mm (YE in) edgewound copper ribbon voice coil 300 Hz- 15 kHz response

94dBSPL,lW,Im

JBL’s Model 2 vides high acoustical output, smooth response, and wide-angle coverage from an assembly only I30 mm (5 in) in diameter. It is well suited to in-line arrays, inconspicuous distributed-speaker ceiling installations, natural-sounding paging and talkback, concealed “surround” sound, and portable voice reinforcement systems. Peak-free response allows higher gain in sound reinforcement systems without acoustic feedback. Moreover, the 2 I05H has high sensitivity and full 50 W program power capacity. It can produce greater acoustic output than any other

105H is

a unique transducer that pro-

small cone loudspeaker; more, in fact, than many 300 mm

(

in) units.

The design of the 2 105H incorporates a rigid cast aluminum frame, 0.74 kg and viscous-damped cone termination. Wherever natural reproduction of voice frequencies is the goal, Model 2 105H can be substituted for largerloudspeakers to give a significant improvement in high frequency dispersion while at the same time reducing the size and cost of mounting provisions.

( 1%

lb) magnetic assembly,

ARCHITECTURAL SPECIFICATIONS:

The hansducer shall have a nominal diameter of 130 mm I5 in). overall depth not greater than 45 mm aluminum to resist deformation. The voice coil shall be approximately 22 mm (‘A In) in &meter and shall be made of edgewound copper ribbon operating in a magnetic field of not less than 1.35 T. The transducer shall be designed to allow mounting from either the fmnt or the rear of the baffle board.

Performance speciffcations of a typical production unit shall be as follcws: Measured sensitivity (SPL at axls and 93 dB 45’off axis. As an lndicatlon of electromechanical conversIon efficiency, the BI factor shall be at least 6.6 Tm. The half-space reference efficiency shall be I .2 %. Usable frequency response shall extend from 300 Hz to I5 kHq. On-axis response, measured at a distance of I .8 m (6 ft) or more under free Reid conditions, shall approximate a straight line dsing with frequencyata rite of I .5 dB per octave. Response shall not deviate more than 3 dB from this characteristic from 300 HZ to 8 kHz. Above 8 kHz. response shall gradually roll off, but at I2 kHz shall not be more than 3 dB down from the 500-2500 Hz reference level. Nominal impedance shall be 8 fl. Rated power capacity shall be at least 50 W normal speech or music program material.

, T.he bansducer shall be IBL Model 2 105H. Other loudspeakers will be consldered for

equi&ncy

laboratory verify that the above performance specifications are met.

+ZU

+15

+10

( 1% inl,

and weigh at least I .2 kg (21/r Ibl. The frame shall be of cast

I m

with a

I W input. wept 500-2500 Hz) shall be at least 94 dB on

provided that submitted data from a recognized independent test

z+S

ii0

-5

-10

-15

-20

Frequency response contour of

response of a typical production unit, including all peaks and dips, does not deviate more than 3 dB from the above curve.

IBL contmually engages m research related to product improvement New materials.. production methods. and design refmements are mtroduced Into exlstmg products without notlce as a routrne expressm” of that philosophy For this reason. any from its pubhshed descnptlon. but wll always equal or exceed the ongtnal design speclficatlons unless othewse stated

100

1,ml

Model 2105H. Measured

current

IBL product may differ I” some respect

10,COl

SPECIFICATIONS:

I30

(12

Nominal Diameter

Rated Impedance. 8 ohms

Power Capacity’

Sensitiwty2

Frequency Range.

Rprnmmended Enclosure

.- _ _. . .

Effective Piston Diameter: 89 mm (3.5 in)

Maximum Excursion: 6.4 mm (% in peak to peak)

Minimum Impedance: 7.2 ohms (2 10% @ 25’C)

Voice Coil Diameter: 22 mm (7/s in)

Voice Co11 Matenal Edgewound copper ribbon

Voice 0x1 Windmg Depth. 3 3 mm (0 128 m)

Magnetic Gap Depth: 3.6

Magnetic Assembly Weight: 0.74 kg

Effective Moving Mass: 0.0035 kg

Positipe voltage on black terminal gives forward diaphragm motion

Thiele-Small Parameters

Mounting InformatIon

Bolt Circle Diameter II9 mm (4’%6 in)

Baffle Cutout Diameter

Qpical Volume !&placed

hxr n+ver When Mounted

‘, -....

‘Contmuous program power 1s defmed as 3 dB greater than contmuous sme wave power and IS a conservatwe exprewon of the transducer’s ablhty to handle typical speech and mwc program material ZMeasured wtth an Input swept from 500 Hz to 2500 Hz

Volume: 1.5 L (0.05 fts)

Flux Density I 35 T (13.500 gauss)

BI Factor: 4.6 N/A

qo (Half space): 1.2%

P, (Max): 25 W continuous sine wave

Overall Diameter

Front Mount

Rear Mount

in Enclosure: 0.3 L (0.01 fts)

Net Weight:

Shipping Weight:

50 W continuous program 94dBSPL.IW.lm 300 Hz - 15 kHz

f,. 200 Hz

R,: 6.1 ohms

Qts 53

Cl,,. 30

O,,: .65

V,,: .85L (.035 ft’)

Sn: .JO62 m2 (9.6 in21

X,, 15mm(06in)

Vy). 9 2 cm3 (6 ing)

Le: 0.25 mH

130 mm (5% in)

108 mm (4% in) 102 mm (4 m)

Depth: 45 mm

1.2 kg (2% lb)

1.4 kg (3

in)

mm (0.13 in)

(1%

lb)

(1%

in)

lb)

,.a

JBL Professional, 8500 Balboa Boulevard, P.O. Box 2200, Northridge, California 91329 U.S.A.

15M SS2105H 9/85 63907 Printed in USA