Stewart Audio DSP100 series Owner's Manual

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Owner’s Manual
DSP100 Series
www.stewartaudio.com
October 2014
DSP100-2
POWER STANDBY SIGNAL 1 CLIP 1 SIGNAL 2 CLIP 2
DSP100-1
POWER STANDBY SIGNAL CLIP
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2
Important Safety Instructions
Before using your Stewart Audio Inc. Power Amplier, please read this Owner’s Manual carefully to ensure optimum trouble-free perfor­mance.
WARNING: TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT EX-
POSE THIS AMPLIFIER TO RAIN OR MOISTURE. DANGEROUS HIGH
VOLTAGES ARE PRESENT INSIDE THE ENCLOSURE. DO NOT OPEN THE
CABINET. REFER SERVICING TO QUALIFIED PERSONNEL ONLY.
The lighting bolt within arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of un-insulated “dangerous voltage” within the product’s enclosure that may be of sufcient mag­nitude to constitute a risk of electrical shock to person.
The exclamation point within an equilateral triangle, is intended to alert the user to the presence of important operating and maintenance (servicing) instruction in the literature accompanying the appliance.
Important Safety Instruction – Please Read Prior to Product Installation.
1. Installation should be performed by a trained and licensed professional to insure safe and lasting operation.
2. All of the safety and operating instructions should be read before the am­plier is installed or operated. Retain these instructions for future refer­ence. All instructions should be followed; all warnings on the amplier and in the operating instructions should be adhered to.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK). NO USER-
SERVICEABLE PARTS INSIDE. REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
3
3. The amplier should be situated so that its location and position does not interfere with its proper ventilation. For example, the amplier must not be placed on a rug, bed, sofa or similar surface that impedes airow across the chassis. Airow through the ventilation openings should be unobstructed.
4. This amplier should not be used near water, for example, near a bathtub, in a wet basement, near a swimming pool, etc. This amplier is intended to be operated in a controlled indoor environment.
5. Do not place the amplier near heat sources such as radiators, heat regis­ters, stoves, or other appliances that produce heat.
6. The amplier should only be connected to 100 / 240VAC, 50/ 60 Hz power supply. Do not defeat the ground or polarization of the power plug.
7. Route power cord and other cables so that they are not likely to be walked on, tripped over or stressed. Pay particular attention to condition of cords and cables at plugs and at the point where they exit the ampli­er. To prevent risk of re or injury, damaged cords and cables should be replaced immediately.
8. Clean the amplier with a clean, damp cloth. Do not use solvents or abra­sive cleaners. Never pour any liquid on the amplier.
9. When left unused for a long period of time, the power cord should be unplugged form the outlet.
10. Damaged Ampliers requiring service should be repaired by a qualied service technician when:
a. The power cord or AC plug has been damaged. b. Objects have fallen, or liquid has spilled into the unit. c. The amplier has been exposed to rain or other moisture. d. The amplier does not appear to operate normally or exhibits
a marked change in performance. e. The amplier has been dropped or the enclosure damaged.
11. The user should not attempt to service the amplier beyond that de­scribed in the operating instructions. All other servicing should be referred to qualied service personnel.
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Table of Contents
Important Safety Instructions ······························································ 2 Table of Contents ··············································································· 4 1 Welcome ························································································ 5
1.1 Features ·············································································· 5
1.2 Using this Manual ······························································· 5
2 Setup ······························································································· 6
2.1 Setup Precautions ······························································· 6
2.2 Amplier Installation ···························································· 6
2.3 Proper Cooling Considerations ··········································· 8
2.4 Input Connections ······························································ 9
2.5 Output Connections ·························································· 10
2.6 Network Connector…………………………………………..12
3 Operation ····················································································· 13
3.1 Operation Precautions ······················································· 13
3.2 Model Congurations………………………………………...13
3.3 Controls, Indicators, and Connectors ································ 14
3.4 Dante ················································································· 17
3.5 Remote Volume Control ···················································· 19
4 Troubleshooting ·········································································· 20 5 Technical Specications ····························································· 21 6 Warranty Information ·································································· 22
6.1 Warranty Summary ··························································· 22
6.2 Return Procedure ····························································· 22
7 Accessories ·················································································· 25 8 Notes ···························································································· 26
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1 Welcome
Congratulations on the purchase of your new Stewart Audio DSP100 Series power amplier. This amplier has been designed and built to provide you with years of high-quality audio performance and trouble­free operation. If after reading this manual you should have any ques­tions concerning amplier installation and operation, please contact your Authorized Stewart Dealer, or you may contact us directly using the contact information provided on the back of this manual.
1.1 Features
The DSP100 Series of ampliers are half-rack commercial ampliers offering 100W of power per channel with integrated DSP. This unique combination of power and features allows these ampliers to be tai­lored to the zone, application, room acoustics, and speakers saving time and budget. Your Stewart Audio DSP100 Series amplier is the result of years of experience in the design and manufacture of quality ampliers. As such it provides a combination of performance and oper­ational benets that simply cannot be found in conventional ampliers.
 Dante interface available
 Integrated DSP for signal routing, ltering, and bridging
 USB control and conguration
 Made in the USA
1.2 Using this Manual
In order to obtain maximum performance from your DSP100 Series Amplier, please take time to read this brief owner’s manual and care­fully follow the guidelines for connection and operation.
This manual provides you with the information necessary to safely in­stall and operate your new DSP100 Series amplier in the most com­mon scenarios. If you nd yourself requiring additional assistance, please feel free to contact your Authorized Dealer, or you may contact us directly using the contact information provided on the back of this manual.
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2 Setup
2.1 Setup Precautions
CAUTION: Before installing your amplier, make sure that you have read the Important Safety Precautions at the be­ginning of this manual.
2.2 Amplier Installation
Two rack mounting options are available for the DSP100 Series ampli­ers. A single rack-mount kit provides for installation of a single DSP100 Series amplier on a 1RU rack. The dual rack-mount kit provides for the installation of two DSP100 Series ampliers side-by-side on a single rack.
2.2.1 Single Rack Mount Kit (Part Number RMK-HLF-S)
Assembling the single rack mount kit is straightforward. Attach each of the right-angle brackets by inserting the 2 screws through the bracket into the side of the FLX enclosure. Two straight brackets are also pro­vided for the rear of the amplier. The method of attaching these to the rack will depend on the type of rack you are using.
2.2.2 Dual Rack Mount Kit (Part Number RMK-HLF-D)
Refer to the gure on the following page when assembling the dual rack mount brackets onto the FLX amplier.
Step 1: Note the position of the captive nuts on the inner brackets. One set must be near the front of one amplier and the other set near the rear of one amplier.
Step 2: Attach the right-angle brackets to the front of each amplier and the at brackets to the rear of each amplier.
Step 3: Attach inner brackets to each amplier as oriented in step 1. the front of the pair of inner brackets and two screws to the rear pair of the inner brackets.
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Step 4: Bring the two subassemblies together, overlapping the anges on the inner brackets. Complete assembly by inserting two screws into the front of the pair of inner brackets and two screws to the rear pair of the inner brackets.
CAUTION: Use only the screws provided in mounting brackets to the amplier. Do not over tighten.
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2.2.3 Product Dimensions
2.3 Proper Cooling Considerations
Because the DSP100 Series ampliers are convection cooled with no fans, ampliers must be given adequate space to allow for proper air­ow. Do not stack the ampliers on top of each other or mount them in a way that other equipment will block airow through the case.
CAUTION: Inadequate airow to the amplier can cause the amplier to overheat and potentially become damaged in the process. Be sure to provide plenty of air space to allow for convection cooling.
Side
8.4in
21.2cm
DSP100-1
POWER STANDBY SIGNAL CLIP
1.7in
4.4cm
10.7in
27.2cm
1.7in
4.4cm
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2.4 Input Connections
Your DSP100 Series amplier is provided with a removable ve-pin
3.5mm terminal block connector for balanced (differential) inputs. Note carefully the polarity symbols on the rear of the unit, and that the two balanced inputs share a common ground connection. Two RCA jacks are also provided for unbalanced (single-ended) inputs. See the next three sections for instructions on connecting your amplier to its input source.
2.4.1 Balanced (Differential) Connections
When using a balanced input source and connector, you must ensure that the hot, cold, and ground pins of the connector are matched up to the +, -, and ground pins of the amplier’s connector respectively. Dia­grams have been provided for standard XLR and TRS connectors.
Please refer to the manual of your input source in case it does not fol­low the standard pin-out.
2.4.2 Unbalanced (Single-ended) Input Connections
Your DSP100 Series amplier is provided with two RCA stereo con­nectors for unbalanced inputs.
Female XLR
Input Connector
+ - +
-
Input Connector
Male TRS
Ground
(Shield)
+
-
+
+ - +
-
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2.5 Output Connections
Because the current ow in constant voltage systems and speakers is much lower than in 8 systems, higher gauge (thinner diameter) wire can be used. Please refer to the following chart to choose the appro­priate wire gauge for your installation.
Speaker leads connect by means of the removable 5mm terminal block connectors supplied with the unit. Strip speaker leads 1/4” and insert leads into connector observing proper polarity. With a small, at-blade screwdriver, tighten the screw until the leads are held securely in place. Inspect for possible shorts or broken wires.
Distance Wire Gauge
Up to 500ft 22 AWG 500-1000 ft. 20 AWG Over 1000ft 18 AWG
Output Connector
+
-
70V 100V
= Step down transformer
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Note: Class 2 wiring must be used on the speaker termi­nals to comply with UL requirements.
CAUTION: Do not connect either speaker terminal to ground. This will cause a short circuit which may dam­age the amplier, speaker, or both.
CAUTION: The speaker terminals represent a shock haz­ard as they carry 70.7V and 100V when driven with an audio signal. Disconnect the amplier from the AC pow­er source when working on these terminals.
Output Connector
Channel 2
Channel 1
+
-
+
-
70V 100V 70V 100V
= Step down transformer at each speaker
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2.6 Network Connector
An RJ-45 connector is provided on Dante network enabled models. Connect this port to your audio transport network switch or router (see Section 3.4 Dante). Network and cable requirements are available from the Audinate web site at www.audinate.com.
All network-enabled DSP100 Series ampliers are shipped from the factory with network input 1 routed to local output 1 (via the internal DSP software mixer). The DSP100-2 model is shipped with network input 2 routed to local output 2. This can be changed as desired via the DSP Control Center software.
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DSP100-1 DSP100-2 DSP100-1-D DSP100-2-D
Output Power per Channel
100W @
70/100V
100W @ 70/100V
100W @ 70/100V
100W @ 70/100V
No. local Inputs 2 balanced
No. local Outputs 1 2 1 2
No. Network Inputs / Outputs
0/0 2 /0
3 Operation
3.1 Operating Precautions
1. Before use, your amplier must be congured for proper operation, including input and output wiring hookup. Improper wiring can re­sult in damage to equipment or potentially harm to the operator. Consult Section 2 for setup instructions.
2. Tampering with the circuitry, or making unauthorized changes is not only dangerous but may also violate local regulations.
3. Use care when making connections between the amplier and the input or output equipment. Using equipment that is not capable of handling the output wattage may lead to permanent damage.
NOTE: Stewart Audio will not be held responsible for damage to your DSP100 Series amplier or connected equipment if the instructions in this manual are not fol­lowed.
3.2 Model Congurations
The basic differences between the DSP100 models are outlined in the table below.
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3.3 Controls, Indicators, and Connectors
DSP100-2
POWER STANDBY SIGNAL 1 CLIP 1 SIGNAL 2 CLIP 2
NETWORK
~ 100-240VAC
50-60HZ 0.8A
SPEAKER 2 SPEAKER 1
+ + + +
10V
RVC
COM
MUTE
RVC
2 INPUT 1
+ - + -
USB
INPUT
2
1
70V 100V 70V 100V
LEVEL LEVEL
12
1
2
4
5 6
7
8
1
Power/Standby LEDs
2
Channel 1 - Signal/Clip LEDS
3
Channel 2 - Signal/Clip LEDS **
4
Power Connector - IEC (Included)
5
Output Connections - 5mm
6
RVC Connector - 3.5mm
7
RCA Inputs
8
USB Programming Connector
9
Channel 2 Level Knob
10
10
Dante Network Connector (RJ45)
11
11
Channel 1 - Level Knob **
12
12
Input Connections - 3.5mm
9
3
10
10
12
12
11
11
** Not present on DSP100-1
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3.3.1 Indicators
DSP100 Series ampliers have 2 front panel LED indicators which illu­minate to indicate when AC power is applied and the unit is operating (power), or when the amplier is in “sleep” mode (standby). There is no power switch so the unit will remain on continuously when plugged in. Two additional LED indicators illuminate when an audio signal is present and when that signal is being clipped. The DSP100-2 models have an additional signal present LED indicator and an additional clip LED indicator for the second input channel.
3.3.2 Controls
DSP100 Series ampliers have an integrated digital signal processor (DSP), providing considerable control of the audio signals. A set of DSP functions is available for each signal path. A powerful cross-point mixer provides a means of routing and mixing signals from the various inputs (both local and network) to the network and local outputs. The ampli­ers are congured entirely via Stewart Audio’s DSP Control Center soft­ware via a USB link. The most current version of the Control Center software can be downloaded via the following link. (http://
www.stewartaudio.com/DSPCC).
A ow chart of the DSP chain for each input and output is displayed on the following page (Figure x.y). All network enabled DSP100 ampli­ers have 2 local and 2 network inputs. The –1 models have one output and a single potentiometer for volume control, while the –2 models have 2 outputs and two potentiometers. The cross-point mixer is shown below.
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BAL INPUT 1
Adjustable
Pregain
EQ
3 Blocks
Compressor Gain
EQ
6 Blocks
Limiter Gain
LOCAL OUTPUT 1
Matrix
Mixer
Adjustable
Pregain
EQ
3 Blocks
Compressor
Gain
EQ
6 Blocks
Limiter
Gain
LOCAL OUTPUT 2
Adjustable
Pregain
EQ
3 Blocks
Compressor
Gain
Adjustable
Pregain
EQ
3 Blocks
Compressor
Gain
Sine Wave
Pink Noise
EQ Blocks
High Pass (1st/2nd Order)
Low Pass (1st/2nd Order)
Low Shelf
High Shelf
Peak (PEQ)
Notch
Trim
Trim
Priority
Ducker
BAL INPUT 2
RCA INPUT 1
RCA INPUT 2
EQ
3 Blocks
Compressor
Gain
EQ
3 Blocks
Compressor
Gain
Adjustable
Pregain
Adjustable
Pregain
DANTE INPUT 1
DANTE INPUT 2
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3.4 Dante
Your network enabled DSP100 Series amplier can act as a network break-in box, as well as an amplier with local inputs and outputs. Au­dio signal routing and conguration is done using the Dante Controller software from Audinate at www.audinate.com.
Select “Dante Controller” under the Products section. This will require registration for Audinate’s portal and also includes access to the Dante Controller User Manual which should be read for complete congura­tion instructions.
3.4.1 Using Audinate’s Dante Controller
Software
Once Dante Controller has been installed following the instructions in the Dante Controller Software User Manual (www.audinate.com), launch the application to see the connection matrix.
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All Stewart Audio products will ship from the factory with the name Ultimo-<MAC>. This can be renamed within the device con­guration in the Dante Controller software.
Transmitters are shown on the top of the matrix while Receivers are shown on the left-hand side. The DSP100 Series ampliers include 2 receive channels. In order to make a connection, click on the matrix node between the appropriate transmitter and receiver. If a connection is successful, it will display a green checkmark.
Note: All network-enabled DSP100 ampliers are shipped from the factory with network input 1 routed to local output 1 (via the in­ternal DSP software mixer). If the DSP100 model has more than one local output, the corresponding network input is routed to the local output with the same number designation. This can be changed as desired via the DSP Control Center software.
3.4.2 Dante FAQ
Q: I am having problems installing or using the Dante Controller Soft­ware.
A: Please refer to the ofcial documentation available in the Audinate portal where you downloaded the Controller Software.
Q: I do not see the DSP100 Series amplier showing up on the net­work?
A: All Stewart Audio products are tagged as Ultimo-<MAC_ADDRESS> from the factory. You can nd a specic Ultimo device by choosing the device’s MAC address from the list. You can rename this using the Dante Controller software.
Q: I routed an audio signal to network input 1 of the FLX amplier using the Dante Control Center software, but hear no output from the ampli­er.
A: Check the settings in the matrix mixer (using the DSP Control Cen­ter software) to be certain that network 1 is routed to a local output.
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3.5 Remote Volume Control
DSP100 Series amplier volume can be remotely controlled (or muted) via the input on the rear of the amplier. An external potentiometer, which can be located wherever convenient, controls the output volume of all channels. Remote muting is also useful for re-alarm situations in which all unnecessary sound must be silenced.
NOTE: The remote volume control connector attenuates the signal level from the level set by the DSP settings. It cannot increase the signal level above those settings, nor does it change those settings.
NOTE 2: The remote volume control is disabled when the USB cable is connected to the device even if a connection
has not been established between the DSP Control Center and the device. Remove the USB connector to use the
remote volume control.
In order to remotely control the volume of the unit, a 10k-ohm, linear taper potentiometer should be placed between the +10V pin and the GND (Ground) pin on the rear of the unit with its wiper on the RVC pin. The volume will be determined by the selected resistance on the po­tentiometer, the greater the resistance the louder the volume.
The amplier can be remotely muted by making a connection between the GND pin and the MUTE pin. No power should be applied to these pins, simply a contact connection.
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4 Troubleshooting
Problem: Power indicator does not turn on.
Procedure: Check that the amplier is plugged into a live outlet. After
you have ensured that it is not a power issue, disconnect any speakers. If the amplier turns on after a few seconds delay, then the problem is in the output connection. Check wiring and speakers for short circuits.
Problem: No output on one or both channels; Power indicator is lit.
Procedure: Check that level controls are not turned down. Check that
input and output connections are secure. Ensure signal present LED is ashing to denote a signal. If there is no signal detected check signal source and that level controls are set high enough.
Problem: Amplier overheats and/or shuts off.
Procedure: Review Section 2.3 on proper cooling procedures. Check
the signal lights on the rear of the amplier to see if the signal is over­driving (the signal light ashes red frequently). Overdriving the amplier for extended periods of time can cause a thermal shutdown.
Problem: Output sound is distorted or cracking.
Procedure: Check all cables for damage or loose connections and re-
duce the gain on the input signal at the mixer or preamp level. Replace the cables and loudspeakers temporarily to see if this resolves the problem. If problem still exists, contact your Authorized Dealer for ser­vice.
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5 Technical Specications
Output Power 30Hz - 20kHz
DSP100-1 100W x 1 @ 70.7/100V
DSP100-2 100W x 2 @ 70.7/100V
Frequency Response (+0, -3 dB) 100Hz-20kHz
THD+N (@ full output power) <0.1%
Signal to Noise Ratio >100dB
Input Sensitivity 1V (0 dBV)
Input Impedance (Balanced/ Unbalanced)
7.2k/ 3.60k
External Mute Contact closure
Power Consumption: Idle; 1/8 Draw TBD
Amplier Class D
Remote Volume 0-10V
Input Connectors RJ45, 3.5mm terminal block,
dual RCA stereo
Output Connectors 5mm terminal block
Dante Network Connector RJ-45
LED Indicators Power, Standby, Signal, Clip
Controls USB, RVC
Power Supply Internal 110/240VAC 50-60Hz
Cooling Convection-Cooling
Construction Aluminum Chassis
Mounting Rack-mounted
Dimensions (height, width, length) 1.75” x 8.4” x 10.7”
Weight 4.5 lbs max (varies by model)
Stewart Audio reserves the rate to change features and specications without notice.
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6 Warranty Information
6.1 Warranty Summary
All Stewart Audio ampliers and accessories, unless excluded in this summary, are covered by a 3-year limited warranty on parts and labor from the data of purchase. In order to be eligible for warranty repairs, the ampliers and accessories must have been purchased through an authorized Stewart Audio dealer and submitted by the original purchas­er. This warranty is only valid in the country in which the amplier was purchased.
6.1.1 Eligibility Requirements.
Stewart Audio warrants against all malfunctions which come as a result of component or manufacturer defect. The amplier is also covered from all failures which arise during the warranty period (3 years from date of purchase) that are not a result of misuse. The following actions will void your warranty:
 The power cord or AC plug has been damaged through misuse.  The amplier has been exposed to moisture or extreme tempera-
tures.
 The amplier has been dropped, items have been dropped on the
amplier, or the enclosure has been damaged.
 The amplier has been opened by the operator.  The amplier was improperly packaged when sending to the fac-
tory for repair, resulting in damage.
 Any of the precautions or instructions found in this manual were
not followed.
Damages resulting to the amplier which are not covered under this warranty can be factory-repaired at cost to the customer. Use the con­tact information below to initiate the repair process.
6.2 Return Procedure
This section includes the return procedures which must be followed in order to prevent processing delay or cost to the customer. Please read the entire section before contacting Stewart Audio for returns.
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6.2.1 Return Authorization Number
All returns to the factory for service must be accompanied by a Return Authorization (RA) number. One can be obtained by contacting Stewart Audio at (209) 588-8111 or via e-mail at support@stewartaudio.com.
NOTE: Any defective products received without an RA number will be returned to sender at their expense.
If Stewart Audio is unable to contact the sender in 14 days, the mer­chandise will be considered scrap and may be disposed of.
6.2.2 Shipment Instructions
If Stewart Audio requests that you ship the defective product back to their service center, please refer to the guide below. To ensure prompt warranty service, be sure to follow all instructions.
1. Return Authorization (RA) is required for product being sent to the factory for service.
2. See packing instructions in Section 6.2.3.
3. Ship the defective product using a method which provides for or­der tracking or order conrmation. The service center is located at the following address:
Stewart Audio 14335 Cuesta Court Suite C Sonora, CA 95370
4. Use a bold black marker and write the RA number on three sides of the box.
5. Record the RMA number for future reference. The RA number can be used to check the repair status.
6.2.3 Packaging Instructions
Should Stewart Audio request that you ship your product to their ser­vice center, these instructions must be followed in order to ensure safe delivery. If they are not followed, Stewart Audio assumes no responsi­bility for damaged goods and/or accessories that are sent with your unit.
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6.2.3 Packaging Instructions (cont.)
1. Please write the RA number on three sides of the box. Include the Stewart Audio RA number inside the box and a brief description of the problem.
2. You will be advised during the RA process what accessories should be included with the amplier (Power supplies, connectors, cords, etc.). This is dependent on the failure assessment.
3. When shipping your amplier, it is important that it has adequate protection. We recommend you use the original packing material when returning the product for repair. If you do not have the origi­nal box, see number 4.
4. If you provide your own shipping pack, the minimum recommend­ed requirements for materials are as follows:
a. 275 P.S.I. burst test, Double-Wall carton that allows for 2-
inch solid Styrofoam on all six sides of unit or 3 inches of plastic bubble wrap on all six sides of unit.
b. Securely seal the package with an adequate carton sealing
tape.
c. Do not use light boxes or “peanuts”.
NOTE: Damage caused by poor packaging will not be covered under warranty.
6.2.4 Estimate Approval
An estimate for all non-warranty repairs will be provided to the custom­er once the unit has been shipped to the factory. The customer is re­sponsible to approve this estimate within 7 days. If the repairs are not approved within 14 days, Stewart Audio reserves the right to consider the unit scrap and may discard it.
6.2.5 Payment of Non-Warranty Repairs
Payment for non-warranty repairs must be submitted to Stewart Audio before the product will be returned to the customer.
25
7 Accessories
The following accessories are available from Stewart Audio for your amplier.
All part numbers shown are Stewart Audio Part Numbers.
To purchase these accessories or to see the full
Stewart Audio product lineup, visit us at:
www.stewartaudio.com
Mounting Brackets
RMK-HLF-S Single rack-mount kit for DSP100 Series ampliers
RMK-HLF-D Dual rack-mount kit for DSP100 Series ampliers
Connection Adapters
ADPT-RCA Mono Female RCA to male 3.5mm terminal block.
ADPT-SUMRCA Stereo Female RCA to male 3.5mm terminal block..
ADPT-SUM35 Stereo Female 3.5mm to male 3.5mm terminal
block.
WP-RVC-B Wallplate with 10k potentiometer and knob for re-
mote volume control (Black)
WP-RVC-A Wallplate with 10k potentiometer and knob for re-
mote volume control (Aluminum)
Wall Plates
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