Page 1
DATA SHEET
HC 6S
HEADPHONE CONSOLE
PHONES PHONES PHONES PHONES PHONES PHONESSIG
1
6
248
100
LEVEL LEVELSIG
2
248
6
100
3
248
6
100
LEVELSIG
4
248
LEVELSIG
General Description
e Rane HC 6S is one of the most indispensable products in
today’s audio industry. Featuring six stereo headphone ampliers, the HC 6S performs a number of necessary tasks, not all of
which are headphone related.
e HC 6S provides Master stereo Inputs which can be used
to drive any or all of the 6 stereo headphone ampliers. A Mono
switch is provided on the front panel to drive both channels of
all 6 ampliers from a common mono source. Six individual
unbalanced stereo Inputs are available to drive any individual
amplier from a separate stereo source. ese Inputs can be
converted to mono balanced Inputs through internal jumpers
if required. Outputs for all six channels are provided on the
5
6
100
248
LEVELSIG
6
100
6
248
6
100
LEVELSIG
MASTER
MONO
248
STEREO LEVEL
6
100
POWER
front panel and on the rear panel so that headphones may be
connected on either side based on the requirements of a given
installation. Two pairs of headphones may be driven from each
channel, one pair connected to the front and one to the rear.
e HC 6S is capable of delivering up to 500 milliwatts
into headphones with rated impedances between 32-600 ohms.
e precise amount of power depends on the exact impedance
of the headphone in use and the number of headphones connected to the unit. Under most conditions, the HC 6S produces
sound pressure levels in excess of 120 dB. is level is more than
adequate for most listeners.
HC 6S
HEADPHONE
CONSOLE
Features
• Six Stereo Headphone Ampliers
• Master Balanced/Unbalanced Stereo Inputs
• Six Unbalanced Stereo Inputs
• Six Output Level Controls
• Master Input Level Controls
• Stereo/Mono Switch
• Front and Rear Output Jacks
• Internal Universal Power Supply (100-240 VAC)
Data Sheet-1
Page 2
HC 6S
HEADPHONE CONSOLE
HC 6S Specifications
Parameter Specication Limit Units Conditions/Comments
Power Output: 1 Channel Driven Max average rms power, 20-20 kHz
500 5% mW 32 Ω headphones
500 5% mW 50 Ω headphones
500 5% mW 100 Ω headphones
300 5% mW 200 Ω headphones
200 5% mW 300 Ω headphones
120 5% mW 600 Ω headphones
6 Channels Driven
250 5% mW 32 Ω headphones
250 5% mW 50 Ω headphones
250 5% mW 100 Ω headphones
200 5% mW 200 Ω headphones
100 5% mW 300 Ω headphones
120 5% mW 600 Ω headphones
(Note: Above values produce loudness levels of 120 dB in most headphones)
Headphone Impedance Range 32-600 10% Ω For best performance
Inputs: Type Active Balanced/Unbalanced
………Connectors ¼" TRS
………Impedance 20k 1% Ω
………Maximum Level +20 1 dBu
Outputs: Type (6) Stereo Ampliers (6) Outs front + (6) Outs rear
………Connectors ¼" TRS Tip = Left, Ring = Right
………Impedance 0.25 typ. Ω Headphone Outputs
Overall Gain Range O to +20 1 dB
LED reshold: Signal Present -20 1 dBu Input Level
Ultrasonic Filter 20 kHz, 6 dB/octave 5% Hz Linear phase
Frequency Response 20-20 kHz +0/-3 dB
THD+Noise 0.002 .002 % 150 mW / 200 Ω 1 kHz, 1 channel
0.02 .01 % 150 mW / 200 Ω 20-20 kHz, 1 channel
IM Distortion (SMPTE) 0.03 .01 % 60 Hz / 7 kHz, 4:1, 150 mW/200 Ω
Signal-to-Noise Ratio -96 2 dB re 150 mW / 200 Ω, A-weighted
Mean Time Between Failure 20,500 Hrs Mil Hdbk-217D, Section V
Unit: Agency Listing UL/cUL/CE
Universal Line Voltage 100-240 VAC, 50/60 Hz VAC 12W
Maximum Power 12 W
Unit: Construction All Steel
………Size 1.75"H x 19"W x 5.3"D (1U) (4.4 cm x 48.3 cm x 13.5 cm)
………Weight 5 lb (1.9 kg)
Shipping: Size 4.25" x 20.3" x 13.75" (11 cm x 52 cm x 35 cm)
………Weight 9 lb (4.1 kg)
Note: 0 dBu = 0.775 Vrms
Data Sheet-2
Page 3
HC 6S
SIGNAL
SENSE
SIGNAL
PRESENT
FRONT
REAR
HEADPHONE
JACKS 1
TIP
RING
TIP
RING
LEFT
RIGHT
+28 dB
+28 dB
HEADPHONE
LEVEL
TO STAGES 2-6
*
IN 1
STEREO*
RIGHT
MASTER
INPUT
0 dB
0 dB
LEFT
MASTER
INPUT
0 dB
0 dB
MASTER
LEVEL
MONO
CONSULT MANUAL FOR MONO BAL ANCED SOURCE S
HEADPHONE CONSOLE
Block Diagram
Application Information
At rst glance the HC 6S looks like any other headphone
distribution amplier. Indeed, it performs superbly all the basic
functions of such an instrument. Two balanced Inputs provide
a master stereo signal to six stereo headphone ampliers, with
individual stereo Level controls. e Master Level control allows
adjustment of the main stereo Input level for proper matching
to any source. In addition, a Stereo/Mono switch converts the
stereo Inputs to mono operation when required.
However, several unique features of the HC 6S allow performance well beyond the limits of standard headphone distribution
ampliers. Besides the stereo Master Inputs, the HC 6S provides
separate stereo Inputs for each of the six headphone ampliers.
Whenever a signal is plugged into the individual stereo Input,
the Master stereo signal automatically disconnects from that
amplier, allowing the remaining stages to be fed either from
the Master stereo Inputs or likewise from another separate input.
is feature opens new applications for the HC 6S, allowing
operation as either a standard distribution amplier or as six
separate ampliers, or any combination of both. By connecting
the six Inputs to a monitor mixing console, or to sub-master
sends, or even to a patch bay, the HC 6S converts any size studio
to a custom headphone monitor mixing system. You now can
give each vocalist more of their voice for increased clarity; or
add more kick drum to the bassist (without giving everyone else
a headache); or let the producer monitor the straight mix all at
the same time. is feature proves equally valuable to broadcast
facilities, video production studios, language labs and other
educational facilities.
e HC 6S provides Output jacks on both the front and
rear panels. e front jacks (paralleled with the rear jacks) add
considerable exibility and ease of operation. is feature allows
permanent rack-mounting while maintaining instant access to
any of the Outputs. Cueing becomes a snap; a must for monitor
mix adjustments, and allows additional monitoring or routing
without the use of a patch bay. Or, for language labs and other
demo purposes, this feature means up to 12 headphones may be
driven simultaneously.
e HC 6S makes a valuable tool for any band wanting to
practice anywhere, anytime, at any volume, without disturbing
a soul. By connecting the HC 6S directly to the mixer outputs
and using headphones instead of amps and speakers, the entire
band can perform at ear shattering levels, with no feedback, with
amazingly cleaner, clearer sound. e HC 6S is a very cost-eective alternative to renting a practice studio for every rehearsal.
Data Sheet-3
Page 4
HC 6S
HC 6S
BALANCED
TIP = POSITIVE (+), RING = NEGATIVE (–),
SLEEVE = SHIELD
UNBALANCED LINE INPUTS: TIP = LEFT, RING = RIGHT, SLEEVE = GROUND
ALL AUDIO JACKS ARE CLASS 2 WIRING
RIGHT LEFT IN IN IN IN IN INOUT OUT OUT OUT OUT OUT
MASTER
INPUTS
6 5 4 3 2 1
ACN 001 345 482
MADE IN U.S.A.
RANE CORP.
COMMERCIAL AUDIO
EQUIPMENT 24TJ
R
100-240 V
50/60 Hz 12 WATTS
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause
harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
HEADPHONE CONSOLE
Rear Panel
Headphone Sensitivity
Headphone manufacturers specify a “sensitivity” rating for their
products that is very similar to loudspeaker sensitivity ratings.
For loudspeakers, the standard is to apply 1 watt and then measure the sound pressure level (SPL) at a distance of 1 meter. For
headphones, the standard is to apply 1 milliwatt (1 mW = 1/1000
of a watt) and then measure the sound pressure level at the earpiece (using a dummy head with built-in microphones). Sensitivity is then stated as the number of dB of actual sound level (SPL)
produced by the headphones with 1 mW of input; headphone
specications commonly refer to this by the misleading term
“dB/mW.” What they really mean is dB SPL for 1 mW input.
ink about these sensitivity denitions a moment: headphone sensitivity is rated using 1/1000 of a watt; loudspeaker
sensitivity is rated using 1 watt. So a quick rule-of-thumb is that
you are going to need about 1/1000 as much power to drive your
headphones as to drive your loudspeakers since both of their sensitivity ratings are similar (around 90-110 dB SPL). For example,
if your hi- amp is rated at 65 watts, then you would need only
65 mW to drive comparable headphones. (Actually you need less
than 65 mW since most people don’t listen to their loudspeakers at 1 meter.) And this is exactly what you nd in hi- receivers—their headphone jacks typically provide only 10-20 mW of
output power.
Take another moment and think about all those portable
MP3 players. ey sound great, and loud. Why, you can even
hear them ten feet away as the teenage skateboarder that ran over
your foot escapes.
Power output? About 12 mW.
Architectural Specifications
e headphone console shall have six (6) stereo inputs and two
(2) master inputs driving six (6) stereo ampliers wired to six (6)
outputs on the front panel, in parallel with six (6) outputs on the
rear chassis. Sucient output power shall be provided to drive
most stereo headphones to levels of 120 dB SPL.
Automatic switching shall be included such that driving any
of the separate inputs disconnects that one channel from the
main stereo driving bus internally, allowing separate program
material to be processed through the driven channel.
Input level controls shall be provided on all inputs with a
gain range from o to +28 dB. A stereo/mono switch shall be
located on the front panel.
e master inputs shall be active balanced/unbalanced designs terminated with ¼" TRS (tip-ring-sleeve) connectors. e
outputs shall be ¼" TRS connectors wired tip-left, ring-right,
sleeve-common.
Ultrasonic lters shall be built-in, and LEDs provided to
indicate Signal Present conditions on all amplier inputs.
e unit shall be capable of operation by means of its own
built-in universal power supply operating at 100-240 VAC and
meet CE requirements. e unit shall be UL and cUL listed. e
unit shall be entirely constructed from cold-rolled steel.
e unit shall be a Rane Corporation Model HC 6S.
©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5098 USA TEL 425-355-6000 FAX 425-347-7757 WEB www.rane.com
Data Sheet-4
All features & specications subject to change without notice.
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