Ampeg svt 450 power amp 07s388 schematics

Page 1

A B C D E F G
IV PEP
ov DC 42 J3
W EFFECTS SEND EFFECTS RET w
XLR LINE OUT
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New
75V PIV C6 / uV DC
£va 1' RID
pm 330
s u I
m c2 mum 53::
W 56h- 75" PV
53W 205v
5w
TEST POINT CONDITIONS: m cm
INPUT SIGNAL AT J9 PIN 2. wyy-I
Iv P7P @ IKHz SINE WAVE mw ggg FROM SHEET 2
.19 PIN 3 CONNECTED TO J9 PIN 4 59m W
IquAC LINE VOLTAGE No LOAD.
' R26
15K
mw

TUNER/PRE LINE OUT

M 45

PDWER AMP IN w

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INPUT

TO SHEET 2

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50V
RIB
DCI T
m 5m
,7 7 7 7 7 INSH
75V PW
zsumv PEP Iipple
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716V
POWER TRANSFORMER
CHASSIS MOUNTED
1 9/23/05 CORRECTED a2 ADDED an AS SHOWN mm 2 REM
0 2mm DONTRDLISSUE
A Imam INITIAL IssUE
ASSY PART # 07-388-01
CAUTION ASSY PART # 07-388-02 REV Dale DESCRIPTION EDIISIIEDIIISI (2th By Apde by Date
THIS SCHEMATIC IS PROVIDED FOR USE BV OUALIFIED PERSONNEL ASSY PART # 07 388 03 THEINFORMATIONSCTOAMQFARQUwas DRAWING I5 PWWFWV m
TO AVOID RISK OF ELECTRIC SHOCK REFER SERVICING TO QUALIFIED 4) NOTE: GROUND SVMSOLS REPRESENT GROUNDS AS SHOWN: ' ' I
SERVICE PERSONNEL DO NOT PERFORM ANV SERVICING DEVOND SIgnatUres: Date:
THAT ExPLAINED IN THE OPERATING INSTRUCTIONS. a 4
<7 , #7 Own: REM 0mm SI MO
NOTES DIRW 5ND SIGNAL GND CHASSIS GND ymnm Checked; FIIsI Used On
I) CAUTION, SHOCK HAZARDH M) W *W ReIeased
THIS UNIT CONTAINS HAZARDOUS VOLTAGE DISCONNECT POWER m a '
AND BE SURE POWER SUPPLV IS DISCHARGED BEFORE 5) NOTE TEST POINTS ARE FOR DI ASSv OTHER ASSVS ARE SIMILAR DvawIn SIze, C Drawmg We
TOUCHING INTERNAL PARTS. In t II Pk" D M 56" 27 2m g SCHEMATIC _ POWER AMP
2) UNLESS NOTED, RESISTOR VALUES IN OHMS l/BWVSVI. TOL. m 3 PIoITIme Is 2 BB meing Type' SChemztIC
CAPACITOR VALUES IN MICROFARADSI SOVVIDVS TOL
3) VoLTAGES ARE MEASURED WITH I MEGOHM OSCILLOSCOPE GI SEE PARTS LIST. Tolerance' Class Coder NONE DWW Numb
AND ID MEGOHM DIGITAL VOLTMETER. ' 078388
Shee| I DI 2
D E F G

A

Page 2

EMTPuT
TO SHEET I 029
W
BIAS ADJusTMENT
m 7w m mm W No SIGNAL AND No LOAD
m 2 33 W ADJusT API To PRODUCE 25 .u SmV
51M 132W WW I4w C33 AVERAGE ACROSS R37 R31
W 51w 5 ssupRF RAI R47.RAE.RSD.RE| AND R54
032 V my
mama 04 m
2an w D33 (9 2mm THE? M
g m G I m G 025
Immum 47 W: M"
2m PW 50V P 925 y 5 zwép 33] . 5 50V FrP
7 pm
Immaw FLAMEPROOF 5w FF spar n:
02 /O33:3Tc mm mm
ws ADS see I
*W: I mw #432 . WW
ISM 5w m5 50V W J5
Q5 INmaA/RL 03 2;] R45 R370 Rf? w SPEAKER OUTPUT
m u % vs we 3 ws we 3:: am SIT Egg 53:: 7
5 m .
315v +5 5V DC m $3175 9 my
5 a. /
mu m JL M v SPKR GND 5m:
:ch, WWW # j T7 w P P
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7K 7 5 VIP SW
WW 55V 3
FROM SHEET I 5W APT 5%,va
R34 SLEEVE
027 .
WEI
Sis / '55" DC WW 2an W R37 w 7 W
59m
mw 5w 3 u
my mg (L 5w R379 Hg; R53 SIGNAL GROUND
MP5 AneNmMRL SW w w RaI cm IsK
C" R35 5w 5pm at? I 55W,
50V F P a; 5ch Innv 9°
ow R33 R30 2 . .
m Ass 7W7- 02% 50v
9* 4 A m v Dc Mum}!
2:3: 53:: OFFSET zunv PIV
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034 mm spar 5 3% 00 D {3% Q P D 5pm FR 02 n 5pc! FR D .
EVER 7 FLAITEPRoo: W 5 FLAMEPROQE W" 92 FLAMEPROOF W 5 mgpaoos
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R79
R25 33W F32 m
SM 33" NW
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m 7 022 Sam 5ch I W
BLACK _, 22 my
V as VDC SLOW SPEED 7%ng 02
47 me my man MP5 A
FAN / R62 / +5 7 V DC 9
CHASSIS MOUNTED w
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7 7 7 7 5W 2N52m
Rm
O2I
0 mm
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R35 MFEIRs
. R59 R61 R30 m
R37 Dzaii 3m TEK 33V :7 0222 :7
WW LMSSDZ * , TN7ES£E©RL 5W I523 m m
Sum
V 1 9/23/04 comma 02 my; an AS SHOWN NOI SI 2 REM
0 2/I 3/04 CONTROL ISSUE
A Iz/Ie/os INITIALISSUE
CAUTION REV Dale DESCRIPTION Ecr(S)/ECn(S) Chgd By Appvd by Dale
THIS SCHEMATIC IS PROVIDED FOR USE BY OUALIFIED PERSONNEL, THE wFORMATIDNSSGNgngADUgmg WWW IS paupmmwm
TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED 4) NOTE GROUND SVMBOLS REPRESENT GROUNDS AS SHOWN ,
SERVICE PERSONNEL, DO NOT PERFORM ANV SERVICING EEVOND SIgnatures: Date:
THAT EXPLAINED IN THE OPERATING INSTRUCTIONS,
:7 4 #7 Drawn: REM mm "m am" 5. Laws MO ms
NOTES: DIR, (3ND SIGNAL GND CHASSIS GND Checked FIISI Used On:
I) CAUTION: SHOCK HAZARD-I Edema:
THIS UNIT CONTAINS HAZARDOUS VOLTAGE, DISCONNECT POWER '
égggfiagfifiTigwELRgflggLV IS DISCHARGED BEFORE 5) NOTE: TEST POINTS ARE FOR rm ASSv, OTHER ASSYS ARE SIMILAR. pm Dam MO Sep 27. m Drawmg 526: C DrawIng TIfle:
2) UNLESS NOTED: RESISTOR VALUES IN OHMS I/awrsa/I. TOL. FIolTIme mum Drawmg Type: Schemauc SCHEMATIC ' POWER AMP
CAPACITOR VALUES IN MICROFARADS, SDVVTDVu TOL , .
3) VOLTAGES ARE MEASURED WITH I MEGOHM OSCILLOSCOPE 5) SEE PARTS L'ST» Tolerance: (3'35: CO NONE Draw mm"
AND To MEGOHM DIGITAL VOLTMETER. Sh 2 f 2 078388
tee a