Rolls RA102 User Manual
WARNING:
1
Rev:
1
Sheet of
J16
PHONE 1/4
J6
3.5STJK
R604
10
1
R603
10
4556
U6A
4
C602
27PF
2
3
13
2
P6A
P100K X2
R602
10K
7
8
V+
U6B
4556
6
5
C601
27PF
46
5
P6B
P100K X2
R601
10K
J11
PHONE 1/4
10
R103
C102
27PF
13
P1A
R102
7
U1B
8
V+
4556
6
5
C101
27PF
46
SCHEMATIC
WARNING: THE MINIMUM HEADPHONE IMPEDANCE FOR THE RA102 IS 8
5
P1B
P100K X2
R101
10K
R2
10K
C1
10U
10U
3
J23
XLR JACK F
J1
R1
C2
2
4556
10K
10K
1 2
C701
27PF
R104
1
U1A
2
3
P100K X2
2
C201
27PF
R3
3
J25B
LEFT
7
8
V+
6
46
5
P7B
P100K X2
R701
10K
3.5STJK2J2
10
4
7
8
V+
6
46
5
P2B
P100K X2
R201
10K
8
V+
10K
6
RCAX2
2
J17
PHONE 1/4
J18
PHONE 1/4
J19
J7
3.5STJK
J8
3.5STJK
J9
R703
10
R704
1
4556
U7A
2
3
13
C702
27PF
P7A
R702
10K
U7B
4556
5
C801
27PF
R203
10
R204
1
4556
U2A
2
3
13
2
C202
27PF
P2A
P100K X2
R202
10K
U2B
4556
5
C301
27PF
R5
7
U11B
4560
5
R4
10K
Vb
C3
10U
J22
PHONE 1/4
AUX/JOIN IN
10
2
P100K X2
3.5STJK
10
100
C4
J21
4
8
V+
6
46
P8B
R801
10K
J12
4
8
V+
6
46
P3B
R301
10K
10UC810U
PHONE 1/4
JOIN OUT
10
R803
R804
1
4556
U8A
2
3
13
C802
27PF
P8A
R802
10K
7
U8B
4556
5
C901
27PF
5
P100K X2
PHONE 1/4
J3
10
R303
R304
1
4556
U3A
2
3
C30227PF
13
2
P3A
P100K X2
R302
10K
7
U3B
4556
5
C401
27PF
5
P100K X2
R10
100
R7
10K
RIGHT
J25A
RCAX2
10
R903
10
4556
4
C902 27PF
2
P100K X2
10
C5
1
3.5STJK
R6
10uf
P9A
R902
7
8
V+
U9B
4556
6
5
46
5
P9B
P100K X2
R901
10K
J13
PHONE 1/4
J4
10
R403
4
13
C402
P4A
R402
10K
7
8
V+
U4B
4556
6
5
46
5
P4B
P100K X2
R401
10K
1
4560
4
U11A
Vb
2
3
R9
10K
R8
10K
10K
C6
10U
2
PHONE 1/4
3.5STJK
J10
10
R904
1
U9A
2
3
13
10K
C1001
R404
1
4556
U4A
2
3
27PF
2
P100K X2
C7
10U
J24
XLR JACK F
R1003
10
4556
4
2
13
C1002 27PF
2
P100K X2
27PF
10
C501
27PF
3
3.5STJK
P10A
R1002
7
8
V+
U10B
4556
6
5
Vb
46
5
P10B
P100K X2
R1001
10K
J14
PHONE 1/4
J5
R503
10
4
2
13
C502
27PF
P5A
R502
10K
7
8
V+
U5B
4556
6
5
Vb
46
5
P5B
P100K X2
R501
10K
1 2
J20
3.5STJK
R1004
10
1
U10A
3
Vb
2
P100K X2
10K
3.5STJK
J15
R504
10
1
U5A
3
Vb
2
P100K X2
PHONE 1/4
5968 S 350 W
ROLLS CORPORATION
MURRAY, UT 84107
RA102.SCH J
3 March 2009
Rb
RA102 HEADPHONE AMPLIFIER
C17
C16
C15
C14
C13
C12
C11
LDRR
C10
Vb
R13
18K
D4 1N4001
D3
1N4001
231
12VAC/12-16VDC
503
503
503
503
503
503
503
R14
47 UF
22K
C9
JAPDC
Title
Size: Document Number:
10K
2200 UF
Date:
4
C19
2200uf
C18
2200uf
V+
PHONE 1/4
4
4556
D5
V+
R11
D2
1N4001
D1 1N4001
J26
OHMS. THE MAXIMUM HEADPHONE IMPEDANCE IS 1000 OHMS.
IF YOU CONNECT AND USE THE RA102 WITH A LOWER HEADPHONE IMPEDANCE THAN LISTED ABOVE YOU WILL DAMAGE THE UNIT AND POSSIBLY OTHER
EQUIPMENT THAT IS CONNECTED TO THE RA102.
RA102
Ten Channel
Pro Headphone Amplifi er
MADE IN USA
www.rolls.com
MADE IN USA
www.rolls.com
ROLLS
PS12
clip
SERIAL NUMBER
OUT
IN
OUT
MAIN OUTPUTS
SPECIFICATIONS
Input Impedance: 10K Ohms unbalanced
Max Input Level: +18 dBV
Input Connectors: RCA, R & L balanced XLR
Outputs: 10: 1/4" TRS Stereo jacks
10: 1/8" (3.5 mm) TRS Stereo jacks
Max Gain: 20 dB/Channel
Max Output Power: up to 250 mW/side, 500 mW/Channel ( @ 16 Ohms )
Frequency Response: 20 Hz - 30 kHz
S/N Ratio: 90 dB
THD: <.008%
IMD: <.008%
Phase Shift (In to Out): 0 deg.
Slew Rate: 2 V per microsecond
Crosstalk: - 65 dB
Power 12 VAC (Rolls Model PS12)
Weight: 7 lbs (3KG)
Size: 19” x 1.75” x 3.125” (48cm x 4.5cm x 17cm)
Headphone impedance: 8 Ohms to 1000 Ohms
OUTOUTOUTOUT OUT OUT OUT
PWR
OUT
PROFESSIONAL TEN CHANNEL HEADPHONE AMP
OUT
RA102
ROLLS CORPORATION
SALT LAKE CITY, UTAH
3/09
6
7 58 8 9 0 10 2 0
OPERATION GUIDE
6
INTRODUCTION
CAUTION:
Never plug a mono plug into
any of the Headphone Outputs THE RA102 WILL BE PERMANENTLY DAMAGED.
Thank you for your purchase of the Rolls RA102 Professional Stereo Headphone Amplifi er. The
ROLLS RA102 is a ten-channel headphone amplifi er for professional audio monitoring. A variety of
input options are available including RCA and balanced XLR separate right and left. The JOIN section
is for connecting more than one RA102 directly together without any signal loss or impedance issues.
You can connect many RA102’s together with the JOIN function. Each channel has a 1/4” headphone
output jack on the rear for professional installations and a 1/8” jack on the front for ease of operation
(both jacks may be used at the same time if needed).
NOTE: THIS MANUAL ASSUMES THE USER HAS A WORKING KNOWLEDGE OF AUDIO ELECTRONICS, BALANCED AND UNBALANCED CONNECTIONS, AND PROPER
SIGNAL LEVEL SETTING.
INSPECTION / WARRANTY
1. Unpack and inspect the RA102 box and package.
If obvious physical damage is noticed, contact the carrier immediately to make a damage claim. We
suggest saving the shipping carton and packing materials for safely transporting the unit in the future.
2. Please visit our web site at www.rolls.com and click on the Register Your Warranty Here button, or
complete the Warranty Registration Card and return it to the factory.
MADE IN USA
www.rolls.com
clip
OUT
OUTOUTOUTOUT OUT OUT OUT
OUT
PROFESSIONAL TEN CHANNEL HEADPHONE AMP
OUT
PWR
RA102
FRONT PANEL
Note: Descriptions for Channel One through Channel Ten are identical.
OUTPUTS 1 - 10 : 1/8” (3.5 mm) Tip-Ring-Sleeve jacks for connection to a standard pair of headphones or earphones.
VOLUME 1 - 10: Controls the amount of output signal from the indicated channel for both the front
1/8” and rear 1/4” jacks.
POWER LED: Indicates that the RA102 is connected to the power supply and is on.
MADE IN USA
www.rolls.com
ROLLS
PS12
REAR PANEL
12 VAC INPUT: Connects to the Rolls PS12 AC adapter (Included).
SERIAL NUMBER
IN
OUT
MAIN OUTPUTS
INPUTS: Left and Right - Balanced XLR jacks
- RCA Unbalanced jacks
Note: Descriptions for Channel Six through Channel One are identical.
OUTPUT: 1/4” TRS jack - parallels the channel’s front panel 1/8” Output jack.
JOIN: 2 X 1/4” TRS jacks (IN and OUT) for joining RA102’s together
CONNECTION
Connect the AC adapter to an outlet with the proper voltage. For installations there is intentionally no
Power switch designed on the front of the unit. To turn the RA102 off the power must be terminated
at the adapter. The RA102 was designed for professional applications were most functions are not
accessed from the front. In these applications it is acceptable for the unit to be left on. No damage will
occur to the RA102 in this application, it was designed for it.
Mono/Stereo Operation:
Determine which input confi guration you will use; either RCA or XLR stereo. Mono can be achieved
by connecting the mono input signal to both left and right inputs at the same time.
For a discreet right/left input confi guration, connect a balanced XLR, or RCA plug containing the
”Right” portion of the stereo signal to the Right Main Input. Connect a balanced XLR, or RCA plug
containing the “Left” portion of the stereo signal to the Left Input.
For a TRS stereo input confi guration, connect a Tip-Ring-Sleeve stereo to dual Tip-sleve (mono) RCA
jack cable. This is a very specifi c jack referred to as a insert jack and must be purchase at a specialty
store, to the rear panel LEFT and RIGHT RCA Input’s on the RA102. This cable may come from a
mixer’s AUX output for example.
To send a mono signal to the RA102: connect a mono XLR or RCA to both the LEFT and RIGHT
inputs at the same time this will require a specialty cable. The mono signal will be fed to both the right
and left sides of the headphone outputs.
JOIN EXPLANATION:
The JOIN section is for connecting RA102’s directly together so you can use one source plugged into
the fi rst RA102 and by connecting them with the JOIN in and outs you can have as many headphone
outs as you have units.
To properly connect the JOIN: Plug source material into the fi rst RA102, then plug a TRS 1/4” cable
(also referred to as a 1/4” stereo cable) from the JOIN OUT of the fi rst unit into the JOIN IN of the
second unit. Repeat the JOIN in and out scheme for as many RA102’s as you need, only plugging the
source material in the very fi rst unit in the chain.
WARNING
USING THIS SYSTEM AT EXCESSIVE VOLUMES CAN CAUSE
PERMANENT HEARING DAMAGE.
In order to use this system safely, avoid prolonged listening at excessive sound pressure
levels. Please use the following guidelines established by the Occupational Safety Health
Administration (OSHA) on maximum time exposure to sound pressure levels before hearing
damage occurs. 90 dB SPL at 8 hours
CAUTION: Plugging a mono 1/4” or 1/8” TS plug into the Headphone Out-
puts on the front or rear of the RA102 will cause permanent damage to the unit
because one side would be shorted to ground.
any of the Headphone Outputs THE RA102 WILL BE PERMANENTLY DAMAGED.
This is a TRS or
stereo jack that
is compatible
with the RA102
Headphone
Outputs.
USE AS LOW A VOLUME AS POSSIBLE
95 dB SPL at 4 hours
100 dB SPL at 2 hours
105 dB SPL at 1 hour
110 dB SPL at 1/2 hour
115 dB SPL at 15 minutes
120 dB SPL - avoid or damage may occur
Never plug a mono plug into
This is a MONO
Tip
Ring
Sleeve
(ground)
jack and should
never be plugged
into the Headphone Output of
a RA102.
Tip
Sleeve
(ground)
Loading...