SC A MP/Signal Controlled Amplif ier Power

SC A MP/Signal Controlled Amplif ier Power
SC A MP/Signal Controlled Amplif ier Power
Congratulations on your purchase of this precision component and thank you for your selection of
Parasound. The Parasound SCAMP is designed to automatically power on virtually all the electronic
equipment within your audio/video system. This makes it possible for single button operation to supply
AC power to your entire system. SCAMP is extremely flexible and can be configured in a variety of
ways, so please take time to review this manual to make full use of its capabilities.
SCAMP/Signal Controlled Amplifier
AC Present
Product Overview
The Parasound SCAMP automatically triggers two internal 15 A relays whenever it senses an audio signal
from a signal source such as a preamplifier or surround processor. 15 A relays control AC outlets on the
SCAMP's rear panel. The audio signal level necessary to trigger the SCAMP is internally adjustable from
7 mV to 250 mV; the default level setting is 100 mV. (Refer to drawing #3)
The SCAMP can also be triggered on from a DC source ranging from +5 Vdc to +12 Vdc. Once the SCAMP
has been triggered on with an audio signal or DC voltage, it provides a constant +12 Vdc supply to trigger on
other DC controlled devices such as screen motors or additional SCAMPs. The DC output trigger voltage
ceases five minutes after the SCAMP stops receiving an audio signal or DC input trigger voltage.
The relays built into the SCAMP are triggered sequentially to prevent excessive in-rush current through your
home's AC circuit breakers. The turn-on delay time is internally adjustable from 0 to 8 seconds. The turn off
time for the AC outlets and DC output trigger is 5 minutes after the audio signal or DC input trigger voltage
is removed. The SCAMPs high current internal relays and heavy duty AC receptacles make it suitable for
use even with large power amplifiers such as the Parasound HCA-1206 or HCA-2200II. Two or more
SCAMPs may be linked together and the turn-on delay time of the additional SCAMPs can be internally
adjusted for up to eight seconds.
Unpacking the SCAMP
You should find the following items within the packing carton:
• This manual
• A 14 AWG audiophile-grade AC cord
If any of these items are missing, contact your Parasound Dealer or Parasound Technical Services. Save
your carton and inserts for safe transport in case you move or the unit ever requires repair. Before shipping
the unit, be sure to pack it into an additional outer carton for protection. The audiophile grade AC cord is
packed separately in the carton. This is the only cord we recommend for use with your SCAMP.
Placement of the SCAMP
The SCAMP may be stacked along with your other audio/video components, or you can place it out of
sight within the equipment cabinet. However, take care to mount the SCAMP away from sensitive
low-level sources that might pick up hum radiated from the AC power cords connected to it.
Making Connections to the SCAMP
Audio Connections
Connect the left and right line output of your preamplifier or surround processor to the left and right
inputs of the SCAMP. (Due to the SCAMP's zero insertion loss, there is no signal degradation when
inserting the SCAMP into the signal path between a preamplifier and power amplifier.)
Connect the left and right outputs of the SCAMP to your power amplifier or other component. An
additional set of output jacks facilitates connecting additional amplifiers or other components. Both sets
of output jacks are paralleled directly to the input jacks.
Audio Signal Trigger Input
Line Input Jacks
Connect audio signal from
preamplifier, etc. to trigger
Alternate DC Trigger
+5 to +12 Vdc
Trigger Input
Connect DC Source
to trigger SCAMP on
+5 to +12 Vdc
Trigger Output.
Connect to DC
controlled equipment
to trigger on from
+5 to +12 Vdc Trigger
Audio Outputs
These looping jacks are
parallel to input jacks, connect
to amplifier, etc.
120 Vac/60 Hz
AC Outlets
Connect AC cords from
equipment for SCAMP
to power on
AC Inlet Receptacle
with Built-In Fuse Block
Drawing # 1: Rear Panel Connections
AC Connections
Connect the supplied 14 AWG AC cord from the AC inlet of the SCAMP to the AC wall outlet.
Be sure that the wall outlet has enough current available to adequately power the equipment that the
SCAMP will control.
Connect the AC Cord from the electronic component that you want turned on first to OUTLET 1 of the
SCAMP. Next, connect the AC Cord from the electronic component that you want turned on second to
OUTLET 2 of the SCAMP.
Note: You may connect AC power strips to either or both outlets of the SCAMP providing the current
draw of the components connected to each power strip does not exceed 15 A.
DC Connections
Triggering the SCAMP On from an External DC Source
Connect a wire (22 AWG or thicker) from the ground and a +5 to +12 Vdc output connection of an external
100 mA DC source to the ground and +5 to +12 Vdc IN of the SCAMP.
Triggering Components On with the DC Source from the SCAMP
Connect a wire (22 AWG or thicker) from the ground and +12 Vdc OUT of the SCAMP to the ground and
+12 Vdc input of the external component(s) that you want the SCAMP to trigger on up to 400 mA total.
Connecting Multiple SCAMPs
You can “daisy chain” up to four SCAMPs to build an 8 outlet sequential switcher with a 120 A capability.
Internal jumpers inside the SCAMP allow you to adjust the turn-on delay time from 0 to 8 seconds.
(Refer to drawing #3)
Connect the ground and +12 Vdc OUT connector of the first SCAMP to the +5 to +12 Vdc IN connector of
the second SCAMP and adjust its delay time to 2 seconds. Next, connect the ground and +12 Vdc OUT
connector of the second SCAMP to the +5 to +12 Vdc IN connector of the third SCAMP and adjust its
delay time to 4 seconds, and so on.
Front Panel Indicators
The SCAMP has three front panel mounted status LEDs. The amber AC present LED will illuminate
whenever the SCAMP is plugged into a “live” AC outlet. Two green LEDs labeled Outlet 1 and 2 will
illuminate when their corresponding outlets have been activated.
SCAMP/Signal Controlled Amplifier
AC Present
Outlet Indicators
Light when AC
outlets activate
AC Present Indicator
Lights when AC Voltage
is available
Drawing # 2: Front Panel Indicators
Input Sensitivity Adjustment
7 mV
250 mV
Delay Time Adjustments
8 Seconds
R 10
6 Seconds
R 11
4 Seconds
R 12
2 Seconds
R 13
No Delay
(Default Setting)
15 A 250 V
15 A 250 V
15 A Power Fuses
Drawing # 3: Internal Adjustments and Fuses
The SCAMP has one external 250 mA slo-blow fuse which may blow as a result of an internal fault
condition within the SCAMP circuity itself. Additionally, there is a 15 A internal fuse for each AC outlet.
These fuses will blow if too much current is being demanded from the outlets. Never replace these fuses
with a larger value.
SCAMP Specifications
Current Capability:
30 Amperes; 15 Amperes Per Outlet
DC Input Trigger:
+ 5 Vdc to +12 Vdc, 100 mA
DC OutputTrigger:
+12 Vdc, 400 mA maximum available
Current Capability:
30 Amperes; 15 Amperes Per Outlet
SIgnal Insertion Loss:
0 dB
Circuit Power Requirement:
120 V/60 Hz, 1 A
9 1/2" W x 1 3/4" H (2" with feet) x 7" D
Net Weight:
4 lb.
Specifications subject to change or improvement without notice
Parasound Limited Warranty (USA only)
Parasound Products, Inc. warrants products purchased from authorized Parasound Dealers and Custom
Installers to the original owner for two years from the date of purchase. In the event of a defect in materials
or workmanship, the product will be repaired promptly without charge. At Parasound’s option, product may
be replaced with new product of equal or superior value to the defective product according to the condition
that it was received by Parasound.
The warranty excludes parts subject to normal wear such as fuses, laser pickups, or cosmetic parts.
The warranty also excludes damage resulting from abuse, shipping damages, failure to use products within
specifications or instructions.
The warranty is void in the event of unauthorized repair or modification, removal or defacing of the serial
Dealer stock will be warranted to a maximum of 2 years from date of purchase.
In no case will Parasound accept warranty claims for any purchaser’s unit after 38 months from date of
original dealer’s purchase from Parasound.
For Returns: Call, write, or fax Parasound’s Technical Services Department. If it is decided that the unit
should be returned for inspection at Parasound, it must be packed in its original carton as well as an
additional outer carton. An RA number will be issued which must appear on the outer carton. A note stating
the nature of the defect should accompany the unit. Units that arrive with evidence of mispacking (internal
rattling, damaged carton) will be refused by Parasound.
Parasound Products, Inc. 950 Battery Street, San Francisco, CA 94111
415-397-7100 / FAX 415-397-0144
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