Transcript
Index 2 2 2 3 3
MEDIA LIVE
Block Diagram Technical Specifications Schematics Drawing Exploded View Spare Part List
ACTIVE Second Edition
Warnings ✔ ✔ ✔
SERVICE MANUAL
✔ ✔ ✔ ✔ ✔
Notice Service must be carried out by qualified personnel only.Any tampering carried out by unqualified personnel during the guarantee period will forfeit the right to guarantee. For a correct operation of the instrument, after having switched off, be careful to wait at least 3 seconds before switching on again. To improve the device's specifications, the schematic diagrams may be subject to change without prior notice. All components marked by this symbol have special safety characteristics, when replacing any of these components use only manufacturer's specified parts. The (µ) micro symbol of capacitance value is substituted by U. The (Ω) omega symbol of resistance value is substituted by E. The electrolytic capacitors are 25Vdc rated voltage unless otherwise specified. All resistors are 1/8Ω unless otherwise specified. All switches shown in the "OFF" position. All DC voltages measured to ground with a voltmeter 20KOhm/V.
✔
Soldering point.
Supply voltage.
Logic supply ground.
✔
Male connector.
Test point.
Analog supply ground.
✔
Female connector.
✔
M/F faston connector.
Flag joined with one or more flags
Chassis ground.
with the same signal name inscribed.
Earth ground.
ATTENTION Observe precautions when handling electrostatic sensitive devices.
Address CODE: 270218
✔ ✔
GENERALMUSIC S.p.A. Sales Division: 47842 S.Giovanni in Marignano (RN) ITALY - Via delle Rose, 12 - tel. 0541/959511 - fax 0541/957404 GENERALMUSIC on the NET: http://www.generalmusic.com 1❏
J7
J4
J6
J5
J7
J4
J6
J5
GND
+VCC1
IN IC4
4148
3K3
1/2W 1W C12 220U
D3 7V5
4N7
8K2
C7
R13
4002
47E
2W
33N R40
250V
C23
1W 220U C4
8K2 R23
D2 7V5
4N7 C11
47K
C59 2U2
3E3
4148
D1
C10
S7
4148
470P
S9 +
L1 0.65MH
R88 6E8
C9
768176 - SUPPLY & POWER BOARD
TWEETER
S6
SP-MEDIA 100V
47E
D6
R87 65 C
5W
S5 +
20W
TR7 MJE 350
R86
C60 10U
R21
R22
3
8K2
3K3
100N
2
C15
68E R29
C19 100N
C16 100N 1
R20
DUAL-CONE WIDERANGE
768174 CROSSOVER BOARD L2 0.85MH
5W
D8 5W
4002
R14 10K
2
1K R30
100N C3
SP-LIVE -
NOTE: THE POWER STAGE IS INVERTING
100N
100N C18 100N
8 IC1 TL072 4
+
OUT J12
12
1/2W
TR11 MJE340 1
R5 3E3
1
R6
3
16
GND J11
12K
J3
11
RL1-C 14
100V
R27
J3
3
7
S4
470P
1
FE2B
C3
4148 D12
3 TR1 A1908
2
D9
3K3
68K R38
TR8 MJE 350
R19
8K2
2
R18
R28 C21 100N
C17 100N
FE2B
D7
R24 R2
3
C9 470P
12K R26
D4
47K
3K3 R32
470E R11
100E
8K2
100E 2K7
R31
100P
TR2 A1908 2
WOOFER S8
NOTE: The technical support is made only by replacement the entire board. PCB#313050
-12V
PCB#313006
15K
10U C27
15K
TR13 BC 550
RL1-A
4002 D12 6V3
2W
100N C22 1000U
1
R37
C20
470E R41
1K5
33K R42 15K R43
DL1
-VCC1
R38
R39
40Vac
2
22
3 1
15K
F2 T2A
2
15V 1W
13
2
R36
20Vac
D11
F1 T2A
3
0Vac
10K
12
ON
R35
3
4
3
35V
250VAC
C26 100N
J10
4 11
1 D13 KBL02
1 D14 KBL02
63V C28 4700U
20Vac
35V
F3 T2A
C25 2200U
10
63V C29 4700U
40Vac
J9
3 CN1
R33
+VCC1 F4 T2A
C24 2200U
4
4148
+VCC2
T1 237074 115Vac 100VA 9
MAINS (EU Ver.) 230Vac +/-15% - 50Hz 5
10K
D5
7912
T1 237073 230Vac 100VA
POWER SWITCH
8 IC3 TL072 4
C15
1 GND 3 OUT
C20 10U
NOT USE
R1
J8
2
C22 100N
-VCC1 C21 100N
LIFT
CHASSIS GROUND
R39 100N 8 IC2 TL072 4
SW1
C19
SHIELD
C10
-12V
768175 - INPUTS & DRIVER BOARD
4E7
2
3
100N
OUT GND 2
C25 100N
7812
IN
C24 10U
1K2 R13
IC5
C13
TR7 2N5401
+12V 1
C23 100N
R
R23
10K
R32 10K
1U
22K
TR4 BC550
TR5 BC 560
R17
47E
RL1-B 9
3 1
1
+12V R26
3
D10
R1 470E
TR3 BC550
R11 10K
TR1 BC 560
470P
R34
R15
50V
2K2
R25
C28
1K
C14
C8
100N C18
68E
R31
J2
BIAS ADJ
VR1 470E
0E33
J2
0E33
D13 4148
8K2
68K R37
R34
R8
1K R9 1K R41
100K
3E3
2 TR6 MJE 340 1 2 1 TR4 C5100 3
C27 47K
R2 10E
10K
R42
1
R7 10K
CLIP GY
C1 10N
J14
22P
10K
2 TR3 MJE 802
3
3
3K3
R19
R12
SIGNAL
1 CN1
4E7
R12
3
C29
470P
R36
TR2 BC 560
DL1
J13
R10
R3 1K
3
4148
1U
IC2-A TL072
R3
2 CN1
1N
1 IC3-B TL072
10U
+12V
MAINS (US Ver.) 115Vac +/-15% - 50/60Hz
C2
IC3-A TL072
5
+12V
1/2W
R33
2K7 2
C6
100P
10U
IC1-A TL072
1K
3
400V
C5
TR10 MJE 2 340 1 1 R16
TR5 C5100
2
2
470P
4148 D9 D11 R35
7
R30
4K7
3
R4
4K7 C13
C2
15V 1W
IC1-B TL072
6
2
C1
270N
3
1
1K
C8
15K
1 TR9 MJE350
3
10U
2K43
1%
R18
R17 7K50
D1
2 1
1%
15V 1W
1%
1%
C11 1N
LINK
2K43
2N2
C26
J1
R4
270N
R40 47K
R21
R16
S1
7K50
R28
1
5
R25
4148
D8 C6
22K
J1
-12V
VR2 10K
R22 18K2
4
1%
6K81 7
INPUT (unbal -10dB)
R29
R20
6
1
TR6 2N5550
2
D7
LINK
3
22P
4
47Hz @ -3dB
2
D2
22U
C17 22P
VR1 5KB
C14
3
VOLUME
S2
R8 330E
C16
1
D10
15V 1W
2
4K7
15V 1W
IC2-B TL072
R15
D4
5
1% 22P
1% D3
10U
4148
15K0
C7
C5
R7
3 1
2K2
DL2 VTL5C4 7
R9 330E
2
1% 6
1%
C12 1N
INPUT (bal 0dB)
R14 15K0
1%
330E
4
R27
4148
15V 1W
R10 6
1K5
R5 15K0
R6 15K0
15V 1W
5
R24
C4 22P
D5
4K7
D6 S3
TR12 2N 5550
TR14 BC 550
-VCC2 GND PCB#313014
TECHNICAL SPECIFICATIONS Power (Wrms)
90
Distortion (THD+N)
less than 0.1%
XLR Input Impedance (ohm)
30K (balanced) 15K (unbalanced)
XLR Input Sensitivity (dB)
0 (0.775Vrms)
BLOCK DIAGRAM
+VCC1
TEST & ADJUSTMENT PROCEDURE
+VCC2
Instruments, materials and tools:
768175 - INPUTS & DRIVER BOARD
10K (unbalanced)
RCA Input Sensitivity (dB)
-10dB (0.245Vrms)
Sensitivity (dBspl 1W/1mt)
95 (Media) 91 (Live)
Max Sensitivity (dBspl)
119 (Media) 115 (Live)
Frequency Response (Hz -6dB)
85-20000 (Media) 70-20000 (Live)
Crossover Frequency (Hz)
3.2KHz @ 12dB/oct. (Media)
Speakers
Live: 1x6 1/2"widerange (Live) Media: 1x1"tweeter with EWT horn 1x6 1/2"woofer
BALANCED INPUT XLR or JACK
+
Adjustment procedure: 6) Leaving the amplifier operate, wait until the temperature reaches 50 c, set the input signal to 0 and wait some seconds to stabilize the temperature, adjust the VR1 trimmer to obtain 10+/-0.05mV on the Voltmeter.
Setup:
0dB
RCA Input Impedance (ohm)
5) Set the Variac to 0, connect the 8E 100W resistor to the amplifier output instead of the speaker or x-over, check again if the amplifier operates correctly as specified at points 3 and 4 but with the level reduced to 38+/-0,7Vp.
- Audio generator - Dual trace oscilloscope (Earth lift) - Digital voltmeter or multimeter - 8E 100W Resistor - Variac (0-250Vac) - Temperature Meter
POSITIVE HIGH RAIL FINAL STAGE
VOL
SIGN/CLIP
POSITIVE LOW RAIL FINAL STAGE
POSITIVE VOLTAGE AMPLIFIER
-
SP-LIVE WIDERANGE SPEAKER 43Hz
LINK XLR OUT
+
+12V
SP-MEDIA TWO-WAY SPEAKER
GND -12V
NEGATIVE LOW RAIL FINAL STAGE
NEGATIVE VOLTAGE AMPLIFIER
REGULATORS
Veryfing: 7) Increase the input level to obtain an output voltage about of 0.5Vpp, check if don`t appear a cross-talk distortion, eventually slightly adjust the VR1 position until distortion disappear 8) The voltage value across R24 (or R31) resistor must not exceed 15mV 9) Re-connect the speaker instead of the 8E 100W resistor
Test Procedure: MUTING
BIAS
-10dB
INPUT RCA & LINK
- Connect the Mains plug to the Variac - Connect the Audio generator to the input and set it to 1KHz sinus signal - Connect the Ch.1 oscilloscope probe on the output (R40 side RL1) and set it at 20V/div 200uS/div - Turn the trimmer VR1 on Power Board full counterclockwise (from solder side) - Place the temperature sensor on the heatsink near a final transistor - Insert the Voltmeter terminals across R24 (or alternatively R31) - Put the VOL potentiometer at maximum level 1) Turn on the amplifier 2) Set the input signal to obtain 0dB (0.775Vrms) or -10dB (0.245Vrms) to the appropriate input. 3) Increase slowly the Variac to the nominal value of 230Vac and check if the output appear correctly, the value must be 43Vp, eventually regulate the level adjusting VR2 trimmer. 4) Check if the high rails operates correctly connecting the Ch.2 oscilloscope probe alternatively to D10 cathode and D9 anode, should be appear the follow waves:
Ch.2 Ch.1
Ch.1 Ch.2
NEGATIVE HIGH RAIL FINAL STAGE
+VCC2
MAINS LINE
TRANSFORMER
RECTIFIERS & CAPACITORS
+VCC1
768176 - SUPPLY & POWER BOARD
20V/200uS
20V/200uS
GND -VCC1 -VCC2
-VCC1
-VCC2
ON
❏2
DRW Battelli
DWG#
CKD
Ricci
DSK#
550607
APP.
Zuccatti
REV: 02/03/98
PART:
PCB# 1/1
313050/313006/313014
SCHEMATIC DIAGRAM
Sound Pressure Media & Live
GENERALMUSIC S.p.A. ITALY ALL RIGHTS ARE RESERVED, NO COPIES OR REPRODUCE THIS DOCUMENT WITHOUT WRITTEN CONSENT BY GENERALMUSIC.
Spare Part List EU US SPLive SPMedia
Legend = Specify Europe Version (230Vac) = Specify US Version (115Vac) = Specify Live Version = Specify Media Version
Ref.
Code
Description
Optional Accessories 951126 951127 951128 951131 950978 950444 950445 950446 951125
SC80 Flange for Telescopic stand and TOTEM system SC81 Male Flange SC82 Female Flange SC85 TOTEM System Support SC31 Telescopic Stand SC61 Microphone Stand Adaptor SC62 Wall Mounting Support SC63 Table Fixing Clamp SC64 T-Stand
Accessories 277326
Owner’s Manual
11
12 13 13 14
Cabinet Assembly 1 2 3 3 4 5 6
7 7
667662 667659 657257 657255 657544 220144 290155 228013 210231 210229 210217 210209 180661 180654 120603 120471
Speaker Net Threaded Fixing for External Supports Rear Shell Front Panel (SPLive) Front Panel (SPMedia) 8ohm 100W 6" Widerange Speaker (SPLive) 8ohm 20W 1" Dome Tweeter Speaker (SPMedia) 8ohm 75W 6" Woofer Speaker (SPMedia) Amplifier Gasket Tweeter Gasket (SPMedia) Black Sealer (specify mt) Dacron Filler (specify mq) “Lem” Adhesive Orange Plate (SPLive) “Lem” Adhesive Blue Plate (SPMedia) M8 (UNI558865) Nut 8.4mm Washer
090200 090194 090183 080901 080742 080293 080103 074570 042632 042625 042586 042585 042524 667661 659027 340079 237073 237074 210212 190229 177656 150021 130294 130277 110285 110010 110083 090926 090925 090920
** ** ** ** ** ** ** ** ** ** ** ** ** * * * * * * * * * * * * * * * * *
2N5550 TO92 Npn Transistor BC560 TO92 LN Pnp Transistor BC550 TO92 LN Npn Transistor VTL5C4 Analog Optoisolator Led 3mm Wide Diffused RedGrn 15V 1W 5% Zener Diode 1N4148 100mA 75V Signal Diode 5K 31steps Linear Potentiometer 18K2 1/4w 1% Metalized Film Resistor 15K0 1/4W 1% Metalized Film Resistor 7K50 1/4w 1% Metalized Film Resistor 6K81 1/4w 1% Metalized Film Resistor 2K43 1/4w 1% Metalized Film Resistor Rear Panel White Pot Knob TO220 Mica Washer Transformer 230Vac 100VA (EU) Transformer 115Vac 100VA (US) Slider Switch Adhesive Gasket Lateroid Insulator Heatsink Cord Lock Mains Cord (EU) Mains Cord (US) Power Switch T2A Fuse 5x20mm (EU) T2A Fuse 6.3x32mm (US) 2SA1908 TO3P Pnp Transistor 2SC5100 TO3P Npn Transistor MJE802 TO126 Npn Darl Transistor
Crossover Board 8
768174
Crossover Board (PCB#313050) (SPMedia) The Service Support is made only by replacement the entire Board
Amplifier Assembly
9
DWG:550611
727593 727594 768176
Amplifier Assembly (EU) Amplifier Assembly (US) * Supply & Power Board (PCB#313014)
140081 110307 110119 090917 090916 090200 090183 080743 080605 080293 080245 080170 080156 080103 070106 060501 060336 060075 030715 030554 030525 020493 768175 141189 141186 140242 110267 100061 100045 100043 090201
** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** * ** ** ** ** ** ** ** **
H 2c P=10 Terminal Block Relay 24V / 2 Switch 5A 250V Fuse Clip 10A max (EU) (US) MJE350 TO126 Pnp Transistor MJE340 TO126 Npn Transistor 2N5550 TO92 Npn Transistor BC550 TO92 LN Npn Transistor 3mm Wide Diffused Green Led KBL02 4A 200V Rectifier Diode Bridge 15V 1W 5% Zener Diode 7V5 1W 5% Zener Diode BYV27 2A 100V Fast Recovery Diode 1N4002 1A 100V Rectifier Diode 1N4148 100mA 75V Signal Diode 470E 20% Horizontal Linear Trimmer 1K5 2W 10% Resistor 47E 2W 10% Resistor 0E33 5W 5% Wire Resistor 1000u 6v3 20% Vert Electrolytic Capacitor 4700u 35v 20% SnapIn Electrolytic Capacitor 2200u 63V 20% SnapIn Electrolytic Capacitor 100n 250Vac MKP EMI Capacitor “Siemens” Inputs & Driver Board (PCB#313006) Hor Female XLRJack Socket (NCJ6FKH Neutrik) Hor Male XLR Socket (NC3MAH Neutrik) Dual Rca Horizontal Socket 1sw 2pos Horizontal Slider Switch TL072 Dual JFet Operational Amplifier 7812 +12V 1A Voltage Regulator 7912 12V 1A Voltage Regulator 2N5401 TO92 Pnp Transistor
Notes: Each spare part is single quantity unless otherwise specified Asterisk prefix explanation: Omitted = First level spare part. One asterisk = Second level, part of previous listed first level part. Two asterisks = Third level, part of previous listed second level part. Three asterisk =....................... Any request for not above mentioned part must encompass specific description including: 1) Model name, 2) Section, 3) Module code, 4) Reference name, 5) Quantity number.
3❏
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