FEATURES: JBL power amplifiers have been designed to meet

the most critical professional sound requirements.

Active, balanced bridging input circuitry They are rugged and road-worthy, conservatively
rated, and can handle highly reactive loads with ease.
Full complementary driver and output circuitry The engineering design approach stresses the
Low transient intermodulation distortion (TIM) optimization of each stage, allowing high slew rate
and relatively low loop gain. Overall feedback has
Rugged, road-worthy construction been held to a minimum and is employed only to
Individual stepped gain controls stabilize the gain and the operating point. This
design approach results in amplifiers with excellent
XL-type, phone jack, and barrier strip input performance under the most demanding dynamic
connectors
Heavy duty 5-way output binding posts
Rear panel switch for bridged, dual mono, or stereo
operation
L @ approval on Models 62 15,6230,6260
Models 6230,626O and 6290 approved by Lucasfilm
for THX@installations
input and load conditions. As evidence of the stress The 62 15,623O and 6260 models are cooled by
on dynamic rather than static or steady-state natural convection and the 6290 has a quiet two-
distortion mechanisms, transient intermodulation speed fan for extra thermal protection when the
distortion measures less than 0.03% by the DIM 100 “heat is on.”
test. (Leinonen, Otala, and Curl, “A Method for
Measuring Transient Jntermodulation Distortion
(TIM),” Journal of the Audio Engineering Society,Vol. 25,
No. 4, April, 1977, pp. 170- 177.)
The heat sinks of the amplifiers are made of heavy
aluminum extrusions; the chassis is fabricated of
heavy gauge steel. All internal components are Bacli PaMelModel 62 I5
easily accessible through removal of top and bottom
panels. Front panel graphic details are incorporated
on the rear side of a polycarbonate laminate which is
virtually indestructible.
The 6230,626O and 6290 use multiple 200-watt
output devices in complementary configuration for
high reliability and low distortion. At rated power
into 8 ohms, these output devices are operated at
less than 35% of their rated power dissipation. The
benefit is high reliability and long component life.
The 62 15,623O and 6260 employ a continuous duty
power supply section common to both channels. The
6290 has two totally independent power supplies
with separate power switches and fusing.
Reliable operation of these amplifiers is ensured
through the following protection modes: Current is Bacli Panel Models6230, 6260
limited under improper load or drive conditions.
Output relays, with front panel LED indication,
protect the loudspeaker load under conditions of DC
offset or large low-frequency transients. The relays
also provide power-up, power-down, and “brown
out” muting to protect loudspeakers from AC power
transients generated anywhere in the signal path.
LED’s on the front panel indicate the onset of
clipping and standby mode.
The JBL amplifiers may be operated in the normal
stereophonic mode, dual monophonic mode, or
bridged monophonic mode. A rear panel switch sets
these modes, eliminating the need for patch cords or
adaptors.
Active differential input circuitry offers the
benefits of balanced operation without the use of
input transformers. Input connections may be made Bach Panel Model 6290
via 3-pin XL-type connector, three-conductor TRS 6.3
mm (‘1’in)4 Jack, or barrier strip. The barrier strip
includes a ground strap which can be removed to
isolate the circuit ground from chassis ground.
The five-way output binding posts are arranged in
a 19 mm (31 in) array so that bridged as well as
normal connections may be made with standard
dual banana plugs, bare wire, or terminal Jugs.
- SPECIFICATIONS COMMON TO ALL MODELS EXCEPT WHERE NOTED

“_“” YL,”

Rated Power Midband Power Rated Power Midband Power Rated Power Midband Power Rated Power Midband Power
20 Hz-20 kHz I
kHz 20 Hz-20 kHz I kHz 20 Hz-20 kHz I kHz 20 Hz-20 kHz I kHz

8-ohm stereo (per 35 w 40 w 75 w IIOW 15ow 19ow 300 w 400 w

channel)

4-ohm stereo (per 45 w 5ow 15ow 175 w 300 w 315w 600 W 700 w
channel)

l6-ohm bridge 45 w 5ow l5OW 220 w 300 w 380 W 600 W 700 w

8 ohm bridge 90 w IOOW 300 w 350 w 600 W 630 W l2OOW 135ow

Rated Power: is minimum continuous sine wave average power output per channel. with both channels driving their rated load and overa power bandwidth of 20
Hz to 20 kHz. Maximum total harmonic or intermodulation distortion measured at any power level from 250 milliwatts to rated power is less than 0. I%
for 8 ohm stereo and I6 ohm bridge. 0.2% for 4 ohm stereo and 8 ohm bridge.
Midband Power: is maximum output power at onset of clipping, both channels driven with I kHz sine wave, THD I%

Frequency Response: +O, - I dB. 20 Hz to 20 kHz. at any level up to rated output

Noise: At least 100 dB below rated output ( 15.7 kHz noise bandwidth, A weighted)

Input: Balanced bridging differential amplifier

Input Impedance: 6215.6230,6260: 40k ohms used as balanced input; 2Ok ohms used as unbalanced (single-ended) input
6290: In dual mono and bridged mono modes, 20k ohms balanced; IOk ohms unbalanced

Maximum Input Level: + 20 dB (7.75 V rmsl

Input Sensitivity: I .I V for rated output into 8-ohm load

Voltage Amplification: Variable; maximum 24 dB 162151. 27 dB (6230), 30 dB 162601, 33 dB 16290)

Rise Time: Less than 7 microseconds

Slew Rate: 40 V/microsecond into &ohm load

Damping Factor: With 8-ohm load. greater than 200 at any frequency from 20 Hz to I kHz; greater than 70 at 20 kHz

Channel Separation: Greater than 60 dB at I kHz

Polarity: Output signal is in phase with pin 3 of XL-type connector and tip of TRS jack
6215 6230 6260 6290

AC POWER; Typical AC Power Consumption:

& At Idle (approximate) 30 w 50 w 50 w l2OW

At Rated Output Both Channels 8-ohm 18OW 420 W 600 W l4OOW

At Rated Output Both Channels 4-ohm 225 W 720 W ll8ow

_. lnnn W.
_““”

DIMENSIONS 44x483mm(Itixl9in) 133 x 483 mm (5% x I9 inl l78x483mm17xl9inl l78x483mm17ul91n)

DEWH 229 mm (9 in) 280 mm (I I in) 280 mm (I I inl 356 mm (I4 in)

NET WEIGHT 4.76 kg f 10.5 Ibs) Il.9 kg (26.25 Ibs) 20.2 kg (44.5 Ibs) 28.6 kg 163 Ibs)

SHIPPING WEIGHT 5.67 ke (12.5 Ibs) 15.9 ke 135 lbsl 24 ke_ 153 Ibsl 33 ._ Ihs)
es-.-7 kp (71 -
OptIonal Accessories Attenuator security covers, 70 V autoformers and transformers

ARCHITECTS & ENGINEERS SPECIFICATIONS:

The amplifier shall be a dual channel model of solid state design employing The amplifier shall contain sensing circuitry which provides for current limiting
active balanced input circuitry, and complementary cascade driver circuitry as well under improper drive or load conditions. The amplifier shall contain an output
as fully complementary output circuitry. Front panel controls shall include power relaylsl which disengages the load under DC offset conditions, large lowfrequency
switch[esl and individual stepped gain controls. Front panel indicators shall surges, low line voltage, power up. power down, and over temperature.
include illuminated on-off indicator, illuminated clipping indicators for each The power amplifier shall meet the following performance criteria: Maximum
channel, and illuminated standby indicatorlsl. Front panel graphic details shall be input voltage, at least 7.75 V rms. Voltage required to reach rated output. I ,I V rms.
protected by a polycarbonate laminate. Maximum voltage amplification, 24 dB. (27 dB), (30 dBl, 133 dB). Hum and noise
The amplifier shall be of robust construction, with internal parts easily accessible level at least 100 dB below rated output (Aweighted). Frequency response +O.
through removal of top and/or bottom panels. - I, 20 Hz to 20 kHz. at any power up to rated output. Damping factor at least 200
Rear panel controls shall include a three-position mode switch for selecting the from 20 Hz to I kHz with 8-ohm load. Output power per channel into 8 ohms, 35
following modes of operation: normal stereophonic. dual monophonic from watts, (75 watts), II50 watts). 1300 wattsl; bridged into I6 ohms, 45 watts, (150
channel A input, or bridged monophonic from channel A input. Input connections watts), (300 watts), I600 watts]; bridged into 8 ohms, 90 watts, (300 watts), (600
for each channel shall include: 3-pin female XL-type connector, 3-conductor TRS 6.3 watts), [ I200 watts]; with THD or IM no greater than 0.2%. Transient intermodulation
mm (‘A in) phone jack, and barrier strip. Provision shall be made for lifting the distortion shall measure less than 0.03% by the DIM 100 method of Leinonen. O&la,
circuit ground from chassis ground. Output terminals shall be dual 5-way binding and Curl, IAES, Vol. 25, No. 4, April, 1977.
posts. The amplifier shall be the JBL Model 6215, (6230). (6260), 162901.
AT.R.S. Yfl (6.3 mm) stereo phone jack shall be provided for output monitoring
on the front panel (6215 only).
AMPLIFIER/TRANSFORMER/AUTOFORMER
OUTPUT CHARACTERISTICS:
Amplifier
Stereo EDUT Mono Bridge EOUT
Model
6215 I34VAC 26 8 VAC
__.
6210 25 VAC 50 VAC
6260 35 VAC 70 VAC
6260 50 VAC IO0 VAC

Autoformer Transformer Impedance

Model Model ‘in 70V Pout Ratio’
6217 6218 4 ohm 45w I:27
6237 6238 4 ohm I5OW I:9
6267 6268 4 ohm 3oow I:4
6297 6298 4 ohm 600W I:2

*Can be used for step-up or step-down

TRANSFORMERlAUTOFORMER SPECIFICATIONS:
Frequency Response: f 0.5 dB 25Hz-20kHz

THD: Less than 0.5% from 25Hz-20kHz at rated output

Insertion Loss Less than 0.75 dB

Connections: #6-32 Screw/Solder Lugs
Mounting: Mounting “L” brackets attached

MODEL NO. DIMENSIONS NET WEIGHT SHIPPING WEIGHT

6217: 76 x 76 x 76 mm I .8 kg 2.3 kg
(3 x 3 x 3 in) (3.9 Ibs) 15 Ibs)
6218: 76 x 79 x 96 mm 2.2 kg 2.7 kg
(3 x 3ti x 3% in) (4.8 lbsl (6 Ibs)
6237: l02x83x89mm 2.8 kg 3.2 kg
(4 x 3’/4 x 3% in 1 (6.2 Ibs) (7 Ibs) 6267,6237
6238’ 89~96xl15mm 3.7 kg 4.1 kg
(3%~3sx44%in) (8.2 Ibs) (9 Ibs)
6267: 102 x 89 x 96 mm 3.6 kg 4.1 kg
(4 x 3% x 3K in) (8.1 lbsl 19 Ibs)

6268 ll5x83x96mm 5 6 kg 59kg

(4% x 3% x 3% in) (12.3 Ibs) II3 Ibs)
6297’ ll5x83x96mm 5 9 kg 6 4 kg
(4% x 3% x 3% in1 1129 Ibs) (14 Ibs)
629g’ II5x96xl33mm 7.8 kg 8.2 kg
(4% x 3% x 5% in) (17.1 lbsl 118 Ibsl

6200SC Security Cover Cups for Model 6230,6260,

and 6290. 620 1 SC Security Cover Cups for Model 62 15.

UREI
ELECTRONIC
PRODUCTS
15M 8189 P844 U65731
JBL Professional, 8500 Balboa Boulevard, P.O. Box 2200, Northridge, California 91329 U.S.A.