Paso Sound Products DMS4121B Technical Document

Series DMS
PROFESSIONAL AUDIO & SOUND
®
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Power Amplifiers
© copyright Paso Sound Products, Inc. 2005 Specifications are subject to change without notice
Innovation through technology since 1931
LISTED
COMMERCIAL
AUDIO
EQUIPMENT
30TJ
Manual
OOMM116644
Installation Manual
and Operating Instructions
4 Channel - 3 Zone - Dual VOX -
MOH - Vox Relay - Module Port
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CAUTION !
REV. 1.0
IMPORTANT NOTE: THIS OPERATING MANUAL IS PROVIDED AS AN INSTALLATION AND
AS AN OPERATING AID. PASO SOUND PRODUCTS, INC. DOES NOT ASSUME ANY
RESPONSIBILITY AS TO ITS ACCURACY AND SHALL NOT BE LIABLE IN TORT OR CON-
TRACT FOR ANY DIRECT CONSEQUENTIAL OR INCIDENTAL LOSS OR DAMAGE ARISING
FROM THE INSTALLATION, USE OR INABILITY TO USE THIS PRODUCT.
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DDMMSS44116611BB--116600WWaattttRRMMSS
DDMMSS44224411BB--224400WWaattttRRMMSS
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TM
DIGITAL MUSIC SERIES
TM
DIGITAL MUSIC SERIES

PROFESSIONAL AUDIO & SOUND
®
T
M
DIGITAL MUSIC SERIES
DESCRIPTION AND APPLICATIONS SPECIFICATIONS
PAGE 2
© copyright Paso Sound Products, Inc. 2005 Specifications are subject to change without notice
DMS4121/4161/4241/4361
Power Output:
DMS4121B
DMS4161B
DMS4241B
DMS4361B
Distortion:
Frequency Response:
Inputs:
Input 1
Input 2
Input 3
Input 4
Sensitivity & Z:
Input 1
Input 2
Input 3
Input 4
Attenuator:
Phantom Power:
Hum & Noise:
Telephone Paging Input:
Accessory Port:
EQ LINK:
Line Outputs:
Inputs/Outputs:
Subwoofer Outputs:
Subwoofer Output Level:
Music on Hold Output:
Zone 2 Output:
Zone 3 Output:
Main Output Impedance:
Controls:
Rear Panel:
Remote Volume Controls:
MOH Source Selection:
Zone 2 and 3 Source
Selection:
VOX:
VOX BUSS:
MUTE BUSS:
MUTE DELAY:
Unmuting:
Power Supply Output:
Auto VOX Relay:
Rack Mounting:
Vertical Rack Profile:
Internal Cooling Fan:
Power Requirement:
Power Consumption:
A
C Accessory Outlet:
Terminations:
Housing Finish:
Output Power Indicator:
Dimensions:
Net Weight:
DMS4121B
DMS4161B
DMS4241B
DMS4361B
UNPACKING
Immediately upon receipt of the amplifier, inspect the unit
and shipping container for indications of improper handling
or in transit damage. The equipment was carefully inspect-
ed and tested before leaving the factory. Notify the
Transportation Company immediately if any damage is
found. ONLY THE CONSIGNEE CAN FILE A CLAIM WITH
THE CARRIER FOR DAMAGE DURING SHIPMENT. Be
sure to save the carton and packing material as evidence of
damage for the shipper inspection. DO NOT SHIP the unit
back to the factory unless authorized by the factory.
IN TRANSIT DAMAGES ARE NOT COVERED BY THE
PASO WARRANTY.
120 Watt RMS
160 Watt RMS
240 Watt RMS
360 Watt RMS
Less than 0.5% THD
20 - 20,000 Hz ± 1 db
Microphone 1 Balanced
Telephone Interface - Transformer Balanced
AUX
(Stereo Summing)
Module Port
Mic 1 = 1.5 Mv - 250 ohm
Te l =100 Mv - 600 ohm - Transformer Balanced
AUX = 100 Mv - 47K ohm
Module = 1 V - 47K ohm
Variable (rear panel control)
On MIC Input by internal jumper (18 V)
Mic -70 db, Aux -75 db
600 ohm Transformer balanced
Accepts Standard Module
Preamp out, Power Amp in with EQ Link Switch
Line Out 600 ohm - 1.5 V loaded
MIX BUSS
Pre-EQ and Post-EQ Outputs
1 Volt
600 ohm-1 Volt Transformer Balanced
1 Watt-8 ohm with Control
1 Watt-8 ohm with Control
8 ohm, 25 Volt and 70 Volt line
MIC Input Volume - PHONE Level - AUX Input
Volume - Module Volume - AUX Input Attenuator -
MOH/ZONE 1 Level Control - ZONE 2 Level Control
- VOX 1/VOX 2 Sensitivity - VOX TIME Delay
AUX Input Volume and Master Volume
AUX - MODULE by internal jumper
AUX - MODULE by internal jumper
Voice Activated Muting
Available on all 4 Inputs by internal jumpers
Available on all 4 Inputs by internal jumpers
Adjustable from 3 Sec to 30 Sec (rear panel control)
MUTES/UNMUTES MIC Input only
24 V DC - 250 mA Regulated
NO/NC Contacts - VOX activated-Rating = 7 A
Optional19” Rack Mounting Kit
2-U of Vertical Rack Space
3” Thermally Controlled
117 Volt, 50-60 Hz
DMS4121B = AC = 850 VA - DMS4161B = AC =
970 VA - DMS4241B = 1200 VA - DMS4361B =
1500VA Max.
500 W Max. Unswitched
Screw Terminals, RCA Jacks
Black
Multi-color LED
(front panel)
DMS4121B - DMS4161B - DMS4241B = 19” W., 12”
D., 4” H. with feet
(482X305X102 mm) 3.5” H (89 mm) . less feet
DMS4361B = 19” W., 15” D., 4” H. with feet
(482X381X102 mm) 3.5” H (89 mm) . less feet
22 Lbs
(11 Kg)
25 Lbs (11.4 Kg)
26 (11.8 Kg)
33 Lbs (15 Kg)
High Performance - High Reliability Design
Wide Frequency Response - Very Low Distortion
4 Channel Inputs - 3 Zone Outputs
Balanced Microphone Input
Phantom Power on MIC Input
600 ohm Transformer Balanced
Telephone Paging Input
Telephone Input Level Control
Auxiliary Input with Stereo Summing
Auxiliary Input Attenuator
Independent Input Controls
Addressable VOX Buss
Voice Activated Muting
VOX Variable Time Delay Function
Addressable MUTE Buss
Direct Muting or Unmuting
Rear Panel Port accepts Standard Module
Independent Module Level Control
External EQ Link
600 ohm and 8 ohm 1 Watt MOH Amplifier
MOH Amplifier Source Selector
Zone 2-3, 1 Watt - 8 ohm Output with Control
MIX Buss and 600 ohm Line Output
NO/NC VOX Operated Relay
AUX1 and Master Remote Volume Controls
24 V DC 250 mA Regulated Power Supply Output
8 ohm, 25 Volt & 70 Volt Output
Pre-EQ Subwoofer Output
Post-EQ Subwoofer Output
19” Rack Mounting Ready
Low profile - 2-Units of Vertical Rack space
UL 6500 Listed (US - CANADA)
DIGITAL MUSIC AMPLIFIERS

PROFESSIONAL AUDIO & SOUND
®
T
M
DIGITAL MUSIC SERIES
PAGE 3
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICEDMS4121/4161/4241/4361
READ BEFORE OPERATING READ BEFORE OPERATING
BEFORE OPERATING THE AMPLIFIER, BE SURE YOU
FULLY UNDERSTAND ALL INSTRUCTIONS AND FEA-
TURES OF THE UNIT.
1) Read these instructions carefully.
2) Keep these instructions.
3) Heed all Warnings.
4) Follow all instructions.
5) DO NOT use this apparatus near water.
6) Clean ONLY with a damp cloth.
7) DO NOT block any of the ventilation openings.
Install in accordance with the instructions provided.
8) DO NOT install near any heat sources such as
radiators, stoves, or other apparatus (including ampli-
fiers) that produce heat.
9) DO NOT mount amplifier into a container or a
closed unventilated closet while operating.
10) DO NOT place any object or accessory equipment
such as Tuners, Mixers, Cassette Decks, etc. on top of
the amplifier. Obstructing or closing the cabinet venti-
lation openings may cause overheating.
11) DO NOT defeat the safety purpose of the polar-
ized or grounding type plug. A polarized plug has two
blades with one wider than the other. A grounding type
plug has two blades and a third grounding prong. The
wide blade and or the third prong is provided for your
safety. When the provided plug does not fit into your
outlet, consult an electrician for replacement of the
obsolete outlet.
12) Use only the attachments and accessories speci-
fied in this manual.
13) If a cart is used, use caution when moving the
cart/apparatus combination to avoid injury from tip-
over.
14) Unplug this apparatus during lighting storms or
when unused for long periods of time.
15) Refer all servicing to qualified service personnel.
Servicing is required when the apparatus has been
damaged in any way, such as power supply cord or
plug is damaged, liquid has been spilled or objects
have fallen into the apparatus, the apparatus has been
exposed to rain or moisture, does not operate normal-
ly, or has been dropped.
16) DO NOT replace fuses unless power cord is
removed from the AC wall outlet.
17) DO NOT install accessories unless the power
cord is removed from the AC wall outlet.
TO REDUCE THE RISK OF FIRE OR
ELECTRIC SHOCK DO NOT EXPOSE
THIS APPLIANCE TO WATER, RAIN OR
MOISTURE
IMPORTANT SAFETY INSTRUCTIONS
DIGITAL MUSIC AMPLIFIERS
RACK MOUNTING
A) Procure the optional accessory Rack Mount Kit Model 27/3501.
B) Turn amplifier up side down and remove the four rubber feet by unscrewing the four holding screws.
C) Remove two screws on each side of the amplifier holding the amplifier cover.
D) Install the rack kit brackets by using the self-tapping screws provided.
O
POWER
DIGITAL MUSIC AMPLIFIER
PROFESSIONAL AUDIO & SOUND
DIGITAL MUSIC SERIES
DMS
TM
OUTPUT LEVEL
PEAK
Fig. 3 - Rack Kit Mounting

PAGE 4 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE DMS4121/4161/4241/4361
DIGITAL MUSIC POWER AMPLIFIER
O
POWER
PROFESSIONAL AUDIO & SOUND
DIGITAL MUSIC SERIES
DMS
DMS
TM
OUTPUT LEVEL
PEAK
On-Off Power Switch
Fig. 4 - FRONT PANEL CONTROLS
PROFESSIONAL AUDIO & SOUND
®
T
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DIGITAL MUSIC SERIES
DIGITAL MUSIC AMPLIFIERS

PAGE 5
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICEDMS4121/4161/4241/4361
1
2
3
4
58
7
9
13
12
10
11
22
17
616
14
15 18
35 2526272829
303132
33
34
36
37 2324
19
GROUND
LINE FUSE
8A 250V
117V 500W MAX
117V 60HZ
R
L
LEVEL LEVEL
BOOSTER
SUB OUT
PRE EQ
PRE OUT
POWER IN
SUB OUT
POST EQ
ATTENUATOR
UNSWITCHED
0 600
1 WATT
1 VOLT
AUX REMOTE
600 ohm 100mV
MUTE
RVC RVC
0 8 0
G
Mute G Unmute
MIX BUSS AUX IN
AUX
ZONE2
ZONE1 VOX
SENS
VOX TIME
DELAY
- +
NO C NC
VOX
24V DC
ZONE 1 ZONE 2
250 mA RELAY
IN
BOOSTER
OUT
MODULE TEL MIC AUX
VOLUME
47K ohm
100mV
BALANCED
250 ohm 1.5mV
RV RV
AC 1200VA
1 WATT
8
SER. NO.
CLASS 2 WIRING ACCEPTABLE
SPEAKER OUTPUT
POWER RATING 240 W RMS
DMS4241B
DMS POWER AMPLIFIER
MASTER REMOTE VOLUME
LISTED
COMMERCIAL
AUDIO
EQUIPMENT
30TJ
CUS
EQ LINK
LEVEL LEVEL
LINE OUT 600
HOTCOM
G HOTCOM
EQ LINK
IN OUT
COM 825V 70V
PORT ACCEPTS
STANDARD
MODULE
CAUTION: REMOVE
POWER CORD FROM
AC OUTLET PRIOR TO
INSTALLING MODULE
PROFESSIONAL AUDIO & SOUND
Fig. 5- REAR PANEL INPUTS - OUTPUTS - CONTROLS
1) Unswitched AC Auxiliary Socket 2) Zone 1 MOH - 600 ohm, 1 Volt Output 3) Zone 1 - 8 ohm, 1 Watt Output 4) Zone 2 - 8 ohm, 1 Watt Output 5) 24 Volt DC Regulated Power Supply Output 6) VOX Relay NO/NC Contact Terminals 7) Master Remote Volume Control Terminals 8) EQ LINK - IN - OUT Switch 9) EQ LINK - PREAMP. OUT/POWER AMP IN 10) SUB OUT - PRE EQ 11) SUB OUT - POST EQ 12) BOOSTER IN 13) BOOSTER OUT 14) MIX BUSS 15) LINE OUT 600 Ohm 16) AUX 1 - Stereo Summing Jacks 17) AUX 1 Input Attenuator 18) AUX 1 Input Level Control
19) Variable Speed Cooling Fan 22) Standard Module Port 23) MIC Input Level Control 24) TELEPHONE Paging Output Level Control 25) AUX 1 - Remote Volume Control Terminals 26) MIC Balanced Input 27) TEL Paging Balanced Input 28) MIC UNMUTE 29) MUTE Terminals 30) MODULE Level Control 31) MUTE Time Delay Control 32) VOX Sensitivity Control 33) Speaker Output Terminals 34) ZONE 2 - Output Level Control 35) ZONE 1 - Output Level Control 36) AC LIne Fuse 37) AC Power Cord
PROFESSIONAL AUDIO & SOUND
®
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DIGITAL MUSIC SERIES
DIGITAL MUSIC AMPLIFIERS

PAGE 6 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE DMS4121/4161/4241/4361
Fig. 6 - MAIN PCB AND MOH BOARD TOP VIEW
FUNCTION SWITCHES AND JUMPERS LOCATION
MODULE
VOX ON - OFF
JUMPER
SW207
ON OFF
ON OFF
MIC1
MUTE ON - OFF
JUMPER
SW202
ON OFF
AMPLIFIER REAR PANEL
CN209
DMS4241 - 2
REV - 1
SW207
MOD(VOX)
ON OFF
MOD(MUTE)
SW208
ON OFF
MOD(TRIGGER)
SW209
ON OFF
VOX(TEL)
SW205
ON OFF
MIC(UNMUTE)
SW206
ON OFF
MUTE(TEL)
SW204
ON OFF
VOX(MIC1)
SW203
ON OFF
MUTE(MIC1)
SW202
ON OFF
PHANTOM(MIC1)
SW201
MODULE
MUTE ON - OFF
JUMPER
SW208
ON OFF
MODULE
TRIGGER ON - OFF
JUMPER
SW209
ON OFF
MIC 1
VOX ON - OFF
JUMPER
SW203
ON OFF
TEL
MUTE ON - OFF
JUMPER
SW204
ON OFF
MIC
UNMUTE ON - OFF
JUMPER
SW206
ON OFF
TEL
VOX ON - OFF
JUMPER
SW205
ON OFF
MIC1
PHANTOM ON - OFF
JUMPER
SW201
ON OFF
ZONE 1
SW702
ZONE 1
SW701
REV - 0
DMS3120 - 7
M. O. H. BOARD
ZONE 2
AUX2 AUX1 MODULE
JUMPER
SW701
AUX2 AUX1 MOD
AUX2 AUX1 MOD
AUX2 AUX1 MOD
SW702
DMS3120 - 7
M.O.H. BOARD
RVC RVC HOT COM GND
(MIC)
HOT COM GND
(TEL) UNMUTE GND MUTE
T701
AMPLIFIER REAR PANEL
8ohm 0 8ohm 0 600 ohm 0
C705
C710
C704
PROFESSIONAL AUDIO & SOUND
®
T
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DIGITAL MUSIC SERIES
DIGITAL MUSIC AMPLIFIERS

PAGE 7
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
DMS4121/4161/4241/4361
FUNCTION SWITCHES AND JUMPER SETS DEFAULT SETTING TABLE
SW201 MIC INPUT- PHANTOM POWER ON - OFF OFF
SW202 MIC INPUT - MUTE ON - OFF OFF
SW203 MIC INPUT - VOX ON - OFF ON
SW206 MIC INPUT - UNMUTE ON - OFF OFF
SW204 TEL INPUT - MUTE ON - OFF OFF
SW205 TEL INPUT - VOX ON - OFF ON
SW207 MODULE - VOX ON - OFF OFF
SW208 MODULE - MUTE ON - OFF OFF
SW209 MODULE - TRIGGER ON - OFF OFF
JUMPER SET JUMPER FUNCTION FACTORY FACTORY
SWITCH ID NO. REFERENCE DESCRIPTION SETTING SETTING
MAIN PCB JUMPERS (LOWER PRINTED BOARD)
SW301 ZONE 2 INPUT SOURCE - AUX - MODULE AUX
SW302 ZONE 1 INPUT SOURCE - AUX - MODULE AUX
MOH BOARD JUMPERS
EQ LINK Inserts External EQ between SWITCH OUT
Preamp Out and Power Amp Input
REAR PANEL SWITCHES
THE FOLLOWING INSTRUCTIONS REQUIRE THE REMOVAL OF THE AMPLIFIER PROTECTIVE COVER AND ARE
PROVIDED FOR USE BY QUALIFIED PERSONNEL ONLY.
TO AVOID THE RISK OF ELECTRICAL SHOCK DO NOT PERFORM ANY INSTALLATION OR SERVICING UNLESS YOU
ARE QUALIFIED TO DO SO. REFER INSTALLATION OR SERVICING TO QUALIFIED PERSONNEL.
CAUTION ! REMOVAL OF THE AMPLIFIER COVER PRESENTS AN ELECTRICAL SHOCK HAZARD
ALWAYS REMOVE THE POWER CORD FROM THE AC WALL OUTLET
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DIGITAL MUSIC SERIES
DIGITAL MUSIC AMPLIFIERS
SW802 AUX INPUT - MUTE - ON - OFF ON
SW803 AUX INPUT - VOX - ON - OFF OFF
INPUTS BOARD JUMPERS (UPPER PRINTED BOARD)

PROFESSIONAL AUDIO & SOUND
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DIGITAL MUSIC SERIES
DIGITAL MUSIC AMPLIFIERS
CUSTOMER SERVICE
PAGE BACK
REPLACEMENT PARTS
Please provide complete information when you request replace-
ment parts from either the Factory or a Paso Authorized
Distributor. Be certain to include the Part Number and
Description as it appears on the parts list, the Model Number of
the unit and if possible the Serial Number and the date of pur-
chase of the unit. Replacement parts inventory is maintained
specifically to repair Paso products. Part sales for other reasons
or applications will be declined.
ORDERING FROM THE FACTORY
Print all information on a purchase order form and mail to:
PASO SOUND PRODUCTS, INC.
4750 Goer Drive - Building F
CHARLESTON, SC 29406
Be sure to include the following:
- Paso part number
- Part description
- Quantity required
- Model number of the unit
- Serial number of the unit
- Your payment or your authorization for COD shipment for parts
not covered by the Warranty or if your company has a current
account with the factory
RETAIN ORIGINAL IN WARRANTY PARTS UNTIL YOU
RECEIVE REPLACEMENTS. PARTS THAT SHOULD BE
RETURNED TO THE FACTORY WILL BE LISTED ON YOUR
PACKING SLIP.
For your convenience replacement parts are also available
through Paso Authorized Distributors and Dealers nation wide.
Obtain a location list directly from the Factory or your regional
Paso Representative.
TECHNICAL CONSULTATION
- Need help with your installation ?
- Need help with the operation of the unit ?
- Need help with a repair ?
Call or write for assistance. You will find our Technical Dept..
eager to help or assist you with any technical problem you may
have encountered except “`Customizing'' for a unique applica-
tion.
The effectiveness of our consultation service depends on
the accuracy of the information you furnish.
Be sure to tell us:
- The Model and Serial number of the unit
- The date of purchase
- An exact description of the difficulty
- All you have done in attempting to correct the problem
Call our toll-free phone number:
1-800 231 3034
REPLACEMENT PARTS REPAIR SERVICE
REPAIR SERVICE
Repair service for out of warranty Paso products may be
obtained form your local Paso distributor or any other qualified
repair station.
In warranty repairs must be returned to the Factory.
Prior authorization must be obtained from the Factory.
Products received without authorization will be refused by our
Receiving Dept..
IN WARRANTY REPAIR SERVICE
Call or write the Factory to obtain an authorization to return
the product for repairs.
Pack the equipment in the original carton or in a strong carton
with at least THREE INCHES of resilient packing material on all
sides, top and bottom. Seal the carton with reinforced tape and
mark it FRAGILE on at least two sides. Remember, the Carrier
will not accept liability for shipping damages if the unit is improp-
erly packed.
EQUIPMENT RECEIVED IN DAMAGED CONDITION DUE TO
POOR PACKING WILL BE REFUSED AND THE WARRANTY
COVERAGE IS AUTOMATICALLY VOIDED.
The Paso Sound Limited Warranty provides:
The examination of the returned product must disclose in our
judgement, a manufacturing defect. The warranty does not
extend to any product that has been subject to misuse, neglect,
accident, improper installation or where the serial number of the
product has been removed or defaced.
Ship via insured prepaid United Parcel Service or Parcel Post to:
PASO SOUND PRODUCTS, INC.
4750 Goer Drive - Building F
CHARLESTON, SC 29406
Attn. SERVICE DEPARTMENT
The equipment will be returned freight prepaid after repairs.
Be sure to include the following:
- Your name and address
- Date of purchase and copy of invoice
- A brief description of the difficulty
- A return address shipping label
-
OUT OF WARRANTY REPAIR SERVICE
Follow return instructions as per in warranty repair service. Prior
to performing all necessary repairs, you will be advised of the
charges and at that time a written authorization by you will be
required including authorization to return the equipment COD for
the service and shipping charges. This will avoid unnecessary
delays in returning the equipment to you.
Printed in USA Manual OM 164