
To obtain best results from
this Furman Sound electronic product, please
be sure to read this manual carefully before
using it. Please fi ll out and return the Warranty
Warranty, in case your ownership documents
without damage. Additionally, the SP-20AB’s
fi eld monitors and/or headphone systems), in
with another SP-20AB using the HRKIT-2 rack

for driving the small near fi eld monitors used
with the main control room monitors - it can
jack binding posts for speakers, or through
XLR output allows the unit to become a
volume control is provided for it.
Allows side by side mounting of two SP-

Any type of headphones wired with a
volume may be adjusted without affecting
without changing the volume setting.
whole rack with one front-panel switch, and
1
2
3
4 6
8
9
10
0
5
7
INPUT LEVEL
LEFT
20 WATTS / CHANNEL
RIGH
T
OV ERLO AD
SP EAKE R
S
SIGNAL
M ON O
STE REO
L
BRID GED
R
USE FOR BR IDGED
MODEL SP-20A
SATELLITE / REMOTE
VO LU ME
LEFT / MONO INPUT
SP EAK ERS
ON
RIGHT INPUT
OFF
1
2
3
4 6
8
9
10
0
5
7
120 VAC
60 Hz
130 Watts
HE AD
P WR
O N
STEREO AMPLIFIER
PH ON E
OF F
LIFT
G ND

switch determines the SP-20AB’s mode of
operation The three choices are:
for straight mono operation, when there is
watts pet channel for stereo .- to as much
watts without damage. See “SPEAKER
1
2
3
4 6
8
9
10
0
5
7
INPUT LEVEL
LEFT
20 WATTS / CHANNEL
RIGH
T
OV ERLO AD
SP EAKE R
S
SIGNAL
M ON O
STE REO
L
BRID GED
R
USE FOR BR IDGED
MODEL SP-20A
SATELLITE / REMOTE
VO LU ME
LEFT / MONO INPUT
SP EAK ERS
ON
RIGHT INPUT
OFF
1
2
3
4 6
8
9
10
0
5
7
120 VAC
60 Hz
130 Watts
HE AD
P WR
O N
STEREO AMPLIFIER
PH ON E
OF F
LIFT
G ND
LEFT RIGHT
SP EAKE RS
M ON O
STE REO
BRID GED
USE FOR BR IDGED
SATELLITE / REMOTE
LEFT / MONO INPUT
RIGHT INPUT
120 VAC
60 Hz
130 Watts
O N OF F
LIFT
G ND

wired as follows: Pin 3 -left (high); Pin 2 -
jacks. There are also two XLR connectors, one

For installation as a free-standing unit,
with the SP-20AB to the bottom of its case.
for mounting one SP-20AB in the center of a
When installing any equipment in racks, keep
with mounting rails with holes tapped for 10-32
from a pair of LM1875 integrated circuits, which
frequency rolloff, as well as preventing voltages
wired as a volume control.
volts unregulated DC (with 120VAC line input) to

from the date of purchase. The Purchaser
website. If the Product does not conform to this
from improper installation, against defects in
from such non-Manufacturer made products or
warranty also does not apply to Products upon
which repairs have been affected or attempted
with respect to the Products or any part
whether based on this Limited Warranty or
warranty. This Limited Warranty states the

Connectors: Speakers: 5-way binding posts (accommodates
dual banana plugs, spade lugs, bare wires, etc.)
SP-20ABE: 230 VAC, 50/60 Hz, 70 watts