Rolls HA-43 Owners manual
DC PWR
HA43
AMPLIFIER
HEADPHONE
STEREO
INPUT
LIMITED WARRANTY
purchaser to be free from defects in materials and workmanship
under normal installation, use and service for a period of one (1)
year from the date of purchase as shown on the purchaser’s receipt.
shall be limited to repair or replacement (at our option), during the
warranty period of any part which proves defective in material or
workmanship under normal installation, use and service, provided
the product is returned to Rolls Corporation, TRANSPORTATION
CHARGES PREPAID. Products returned to us or to an authorized
Service Center must be accompanied by a copy of the purchase
receipt. In the absence of such purchase receipt, the warranty
period shall be one (1) year from the date of manufacture.
a result of defacement, misuse, abuse, neglect, accident, destruction
or alteration of the serial number, improper electrical voltages or
currents, repair, alteration or maintenance by any person or party
other than our own service facility or an authorized Service Center,
or any use violative of instructions furnished by us.
ties, obligations or liabilities. ANY IMPLIED WARRANTIES,
OBLIGATIONS, OR LIABILITIES, INCLUDING BUT NOT
LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE,
SHALL BE LIMITED IN DURATION TO THE ONE YEAR
DURATION OF THIS WRITTEN LIMITED WARRANTY. Some
states do not allow limitations on how long an implied warranty
lasts, so the above limitation may not apply to you.
SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
FOR BREACH OF THIS OR ANY OTHER WARRANTY,
EXPRESSED OR IMPLIED, WHATSOEVER. Some states do not
allow the exclusion or limitation of special, incidental or consequential damages so the above limitation or exclusion may not
apply to you. This warranty gives you specific legal rights, and you
may also have other rights which vary from state to state.
This product is warranted to the original consumer
The obligation of Rolls Corporation under this warranty
This warranty shall be invalid if the product is damaged as
This one-year warranty is in lieu of all expressed warran-
IN NO EVENT SHALL WE BE LIABLE FOR ANY
STEREO
VOL3 VOL4
HA43
HEADPHONE AMP
PWR
VOL2
VOL1
OUT 1 OUT 2 OUT 3 OUT 4
HA43
Headphone Amplifier
• Single input, four output headphone
amplifier
• Slider volume controls
• AC adapter included
• Full frequency response
• Lots of output level, it's loud.
The HA43 is for expanding or generating headphone channels. It has a 1/4" stereo input, four
volume controls, four 1/4" stereo output jacks,
and is powered by the included AC adapter.
The unit has 20Hz to 20kHz frequency response and is small and easy to use.
Rolls Corporation
Salt Lake City, UT
9/95
Owners Manual
INTRODUCTION
Thank you for your purchase of the HA43 Headphone Amplifier. The
HA43 will power four pairs of stereo headphones for high quality audio
monitoring. The unit is intended for sound reinforcement, studio, choir,
and other applications where a smaller size is desirable.
DESCRIPTION
STEREO INPUT: Stereo 1/4" TRS jack for connection to a stereo linelev el source. This jac k may also be connected to a stereo headphone
output.
DC PWR: F or connection to the power supply.
PWR LED: Indicates that the HA43 has pow er connected.
V OL1 - 4: Controls the level of the indicated channel output.
OUT1 - 4: 1/4" stereo TRS jack for connection to stereo headphones .
CAUTION:
Plugging a mono 1/4" plug into the Headphone Outputs may
cause permanent damage to the unit. Use ONLY TRS stereo plugs in
these jacks.
STEREO
INPUT
PWR
STEREO
DC PWR
HEADPHONE AMP
HA43
VOL1
OUT 1 OUT 2 OUT 3 OUT 4
VOL2
VOL3 VOL4
SPECIFICATIONS
Input Impedance: 100K Ω unbalanced
Max Input Level: +14 dBV
Input Connectors: Stereo 1/4" TRS phone
Outputs: (4) 1/4" Stereo 1/4" TRS phone
Output Impedance: 51 Ω each output
Max Gain: 20 dB/Channel
S/N Ratio: >90 dB
THD: <.008%
IMD (SMPTE) <.008%
P ower: 12 VDC adapter
Weight: 1 lbs (.45Kg)
Size: 3" x 4" x 1.25" (8 x 10 x 3.2 cm)
P100K X2
P100K X2
P100K X2
P1B
P2B
P3B
P4B
P100K X2
D2
LDRR
R21
10K
C5
25PF
V+
4 6
4560
8
6
5
C9
25PF
4 6
5
C10
25PF
4 6
5
C11
25PF
4 6
5
7
U2B
5
V+
4560
8
6
7
U3B
5
V+
4560
8
6
7
U4B
5
V+
4560
8
6
7
U5B
5
P1A
P100K X2
R4
10K
R10
10K
R14
10K
R16
10K
4560
2
1 3
U2A
3
2
C7
25PF
4560
P2A
2
1 3
U3A
3
2
P100K X2
C8
4560
25PF
P3A
2
1 3
U4A
3
2
P100K X2
C12
4560
25PF
P4A
2
1 3
U5A
3
2
P100K X2
Title
ROLLS 4CH HEADPHONE AMP HA43
Size Document Number REV
A HA43
Date: June 8, 1994 Sheet of
C6
25PF
1
4
V-
1
4
V-
1
4
V-
1
4
V-
ROLLS CORPORATION
R2
51
R1
51
1000 UF
R6
51
R5
51
R12
51
R11
51
R17
51
R18
51
J3
JAPDC
100K
100K
.047
J6
PHONE 1/4
R3
10K
V+
4558
8
6
7
U1B
5
R7
R8
C4
1N4001
2
3
1
4558
2
U1A
3
4
V-
C3
.047
V+
D1
R20
22K
R19
22K
V-
1
C1
1000 UF
C2
1000 UF
R9
10K
R13
10K
R15
10K
J1
PHONE 1/4
C13
J2
PHONE 1/4
J5
PHONE 1/4
J4
PHONE 1/4
Loading...