Pioneer GM-X404 User manual

©) PIONEER
The Art of Entertainment
Service
Manual
BRIDGEABLE FOUR-CHANNEL POWER AMPLIFIER
GM-X4d04
@ GM-X404/X1H/UC
ORDER NO.
CRT 1642
xMIR/UC
GM-X4044 XIH/EW,ES
GM=-X304 xc
CONTENTS
1. SAFETY INFORMATION(UC MODEL)......-ssescsessee 2
2 DISASSEMBLY decide onertteccnttsneaniaatoene 2
3. ELECTRICAL PARTS LIST cassssssssesseenceessetnseeeneeeee 3
4, CONNECTION DIAGRAM
(GM-X404/X1H/UC,EW,ES) ......... 5
5. SCHEMATIC CIRCUIT DIAGRAM
(GM-X404/X1H/UC,EW,ES) ......... 7
6. CONNECTION DIAGRAM(GM-X304/X1H/UC) ......... 9
SPECIFICATIONS
Power source...............4. 14.4 V DC (10.8 — 15.6 V allowable)
Grounding SysteM...............ccceeseteeeeeeeereenees Negative type
Current consumption ............. 18 A (at continuous power, 4Q)
Average current drawn” .............. 5.5 A (4Q for four channels)
10 A (4Q for two channel)
PUSC cciscedescetes Heeveddaboawes devas sees cacees nynesewsis daven oahdes els 25A
Dimensions...............6eseeeeeeee 206 (W) x 50 (H) x 270 (D) mm
[8-1/8 (W) x 2 (H) x 10-5/8 (D) in.]
Weight ............ 2.9 kg (3.3 Ibs.) (Leads for wiring not included)
Maximum power output............... 60 W x 4/140 W x 2 (EIAJ)
Continuous power output
30 W x 4 (at 14.4V, 42, 20 — 20,000 Hz, 0.08% THD)
70 W x 2 (at 14.4V, 49, 20 — 20,000 Hz, 0.8% THD)
35 W x 4 (at 14.4V, 2Q, 20 — 20,000 Hz, 0.8% THD)
20 W x 4 (at 12V, 42, 20 — 20,000 Hz, 0.08% THD)
50 W x 2 (at 12V, 4Q, 20 — 20,000 Hz, 0.8% THD)
25 W x 4 (at 12V, 2Q, 20 — 20,000 Hz, 0.8% THD)
Load impedance ....................ceeee eee 4Q (2 — 8Q allowable)
Frequency response ................ 10 — 50,000 Hz (+0 dB, -1 dB)
Signal-to-noise ratio ............ eee eens 108 dB (IHF - A network)
SO parationyii seer sess sas heeweca seca bees sedcae tec eceenehs 65 dB (1 kHz)
PIONEER ELECTRONIC CORPORATION
7. SCHEMATIC CIRCUIT DIAGRAM
(GM-X304/X1H/UC) ....... 11
BH EXPLODED: VIEW? ceenccccecescescctuecstesecensaseseicesnstectieden 13
9. PACKING METHOD ........ cc esessssssesscesseeesseeeseseneesseenes 17
10. OPERATIONS AND CONNECTION
(GM-X404/X1H/UC) ....... 18
11. OPERATIONS AND CONNECTION
(GM-X304/X1H/UC) ....... 21
Low pass filter ......... 2.2... c cece cece Cut off frequency: 80Hz
Cut off slope: -18 dB/oct
High pass filter ..............ccccceceeeeeuee Cut off frequency: 80 Hz
Cut off slope: -12 dB/oct
Bass boost(GM-X404/X1H/UC,EW,ES) ..Frequency: 40 — 120 Hz
(GM-X304/X1H/UC) ............ cece eee Frequency: 60 Hz
Gain: 0 — 12 dB
Input level / impedance ................ 2.2. ceceeee ee 0.4 — 2 V/22 kQ
These specifications were determined and are presented in
accordance with specification standards established by the Ad
Hoc Committee of Car Stereo Manufacturers.
Note:
Specifications and the design are subject to possible modifica-
tion without notice due to improvements.
*Average current drawn
The average current drawn is nearly the maximum current
drawn by this unit when an audio signal is input. Use this value
when working out total current drawn by multiple power
amplifiers.
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153, Japan
PIONEER ELECTRONICS SERVICE INC. P.0.Box 1760, Long Beach, California 90801 U.S.A.
PIONEER ELECTRONICS OF CANADA, INC. 300 Allstate Parkway Markham, Ontario L3R OP2 Canada
PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS AUSTRALIA PTY.LTD. 178-184 Boundary Road, Braeside, Victoria 3195, Australia TEL:[03]580-9911
© PIONEER ELECTRONIC CORPORATION 1995
K-FFP. JAN. 1995 Printed in Japan

GM-X404,xX304 |
1. SAFETY INFORMATION (UC MODEL)
CAUTION
This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer.
Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely
repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty.
If you are not qualified to perform the repair of this product properly and safely; you should not risk trying to do so
and refer the repair to a qualified service technician.
WARNING
Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive
toxicant which may cause birth defects or other reproductive harm (California Health & Safety Code, Section 25249.5).
When Servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin
contact with the solder. Also, when soldering do not inhale any smoke or fumes produced.
2. DISASSEMBLY
@ Removing the Case and Panel
1.Remove four screws, and then remove two cases.
2.Remove two screws, and then remove panel.
@ Removing the Amp Unit
1. Remove thirteen screws.
2. Amp unit is unremovable from heat sink if pulled up
ordinarily, because silicone compound has been
applied between heat sink and subheat sink.
To remove amp unit, therefore, follow steps below.
a.Unfasten two arbitrary screws securing power
transistor.
b.Screw them little by little alternately into screw
holes A to get amp unit afloat and remove it.
3.Once amp unit has been removed, screws with which
Power transistor has been secured should be
returned to thier original position.
lsolator Unit
Subheat Sink
Heat Sink
Fig.2

3. ELECTRICAL PARTS LIST
NOTE:
@ Parts whose parts numbers are omitted are subject to being not supplied.
@ The part numbers shown below indicate chip components.
Chip Resistor
RSID SOOO u, RSUOOSOOOYU
Chip Capacitor (except for CQS.....)
CKS....., CCS....., CSZS.....
=Circuit Symbol & No. Part Name==: Part No.
GM-X404/X1H/UC
S 601
Unit Number : HWH1184 S 851
Unit Name :Amp Assy VR 151
VR 153
VR 201 202
‘onsists of
+ Amp Unit RESISTORS
+ lsolator Unit R 101 104
R 102 103
MISCELLANEOUS R 105 108
R 106 107
IC 101 102 121 122 123 151 152 851 852 853 UPC4570HA R 109 110
IC 301 302 UPC4570C
IC 601 3 TA8194Z R 121 122
IC 602 UPC494C R 123 124
IC 854 UPC4570HA R 127 128
R 137 138
Q 151 152 28C€2712 R 151 152
Q 201 202 203 204 207 208 209 210 601 605 2SC2458
Q 205 602 604 905 909 2SA1048 R 155 156
Q 301 302 303 304 2SK330 R 159 160
Q 305 306 307 308 2SA1145 R 163 164
R 175 176
Q 309 310 311 312 2SC2705 R 191 892
Q 313 314 315 316 2802343
Q 325 326 327 328 2S8D2438 R 201 202
Q 329 330 331 332 2SB1587 R 211 212
Q 603 2SB1243 R 215 216
R 219
Q 606 607 2SD1919 R 309 310
Q 608 609 2SB1277
Q 610 611 612 613 FET IRFIZ44G R 313 314
Q 614 2SD2395 R 317 318
Q 615 2SB1566 R 325 326
R 333 334
Q 851 852 853 854 2SC1740S R 341 342
Q 855 2SD1859
Q 901 902 903 904 2SD1768S R 349 350
Q 906 907 908 2SC2458 R 353 354
D 601 RM4Z R 359 360
R 365 366
D 602 HZ30P R 377 378
D 603 606 608 901 902 903 904 909 910 188133
D 604 HZS7LA2 R 381 382
D 605 852 HZS18L3 R 385 386
D
609
RBV-602L
R
389
390
R
393 394
D 611 612 HZS16L1 R 601
D 851 HZS11LB2
D 912 LED BR4361F R 602 608
L 601 CTH1142 R 603 919
L 851 852 853 854 _~ Ferri-Inductor CTF1007 R 605 619
R 606
T 601 Transformer CTT1035 R 607
TH 601 Thermister CCX1009
TH 603 Thermister CCX1013 R 609 922
Ss 101 Switch(LPF/HPF Select) CSH1029 R 610
S 102 Switch(HPF Select) CSH1021 R 615 871
R 617 618
R 622 640
207
167
111
125
129
135
139
153
171
301
894
203
213
217
311
315
319
327
335
343
351
355
361
367
379
387
391
395
613
924
620
872
208
168
112
126
130
136
140
154
172
302
204
214
218
312
316
320
328
336
344
352
356
362
368
380
384
388
392
396
614
621
873
Switch(BFC)
Switch(Input Select)
Volume 10kQ(C)
Volume 50kQ(C)
Volume 10kQ(A)
209 210 612
131
205
141
909
303
611
321
329
337
345
363
132
206
142
910
304
626
322
330
338
346
920
364
0.22Q
0.22Q
0.22Q
0.22Q
638
918
874
639
921
883
143
911
875
627
323
331
339
347
923
144
912
876
324
332
340
348
885
145
877
616
357
886
146
878
358
HSH-156
CSH1021
CCS1240
CCS1242
CCS1241
RS1/10S103J
RS1/10S822J
RS1/10S123J
RS1/10S103J
RS1/10S563J
RS1/10S153J
RS1/10S123J
RS1/10S223J
RS1/10S102J
RS1/10S473J
RS1/10S432J
RS1/10S221J
RS1/10S182J
RS1/10S222J
RS1/8SOROJ
RS1/10S472J
RS1/10S151J
RS1/10S681J
RS1/10SOROJ
RS1/10S561J
RS1/10S333J
RD1/4PS153JL
RD1/4PS331JL
RD1/4PS161JL
RD1/4PS473JL
RD1/4PS562JL
RD1/4PS222J3L
RD1/4PS473J5L
RD1/4PS151JL
CCN 1013
CCN1013
CCN 1013
CCN1013
RS1/2P100JL
RD1/4PS182JL
RD1/4PS102JL
RD1/4PS103JL
RD1/4PS472JL
RD1/4PS101JL
RS1/10S104J
RD1/4PS221JL
RS1/10S183J
RS1/10S102J
RD1/4PS332JL
RD1/4PS272JL
GM-X404,x304
=====Circuit Symbol & No. Part Name===== Part No Circuit Symbol & No. Part Name===== Part No
R 624 625 628 629 RS1/2S560J C 337 338 339 340 341 342 343 344 CCCSL101J50
R 630 631 632 RS1/2P220JL C 345 346 347 348 CFTNA333J50
R 636 637 RD1/4PS100JL C 349 350 351 352 CKSQYB102K50
R 641 RD1/4PS105JL C 602 CFTNA105J50
R 851 852 853 854 879 880 881 882 RS1/10S471J C 603 CFTNA103J50
R 859 860 861 862 RS1/10S184J C 604 632 470 wF/16V CCH1183
R 863 864 865 866 RS1/10S333J C 605 611 630 631 CEAS470M16
R 867 868 869 870 RS1/10S274J) C 606 CEAS220M 16
R 888 896 RS1/10S222J C 607 CEAS221M10
R 895 RD1/4PS221JL Cc 608 CEAS2R2M50
R 897 RS1/10SOROJ C 609 CQMA102J50
R 901 902 903 904 RS1/10S393J C 610 CEASO10M50
R 905 906 907 908 RS1/10S564J C 612 613 3300 4» F/16V CCH1130
R 917 RD1/4PS104J5L C 615 616 CQMA332J50
R 934 935 RD1/4PS472JL C 617 CQMA102J50
R 936 RD1/4PS103JL C 618 619 620 621 3300 uF/35V CCH1200
R 937 938 RD1/4PS472J5L C 626 627 CEAS221M35
C 628 629 871 CFTNA104J50
CAPACITORS C 634 CKSYB102K50
C 635 636 CFTNA105J50
C 101 102 103 104 CCSQCH150J50
C 121 122 CKSYB474K16 C 637 CKSQYB473K16
C 123 124 127 128 135 136 137 138 CFTNA124J50 C 851 852 853 854 855 856 857 858 CEA010MS50LS2
C 125 126 CKSYB273K25 C 859 862 CEATRS5M50LS2
C 131 132 CKSYB184K16 C 860 861 CEA6R8M35LS
C 863 CEAS102M16
Cc 161 CEA4R7M35LL
Cc 152 CEAS4R7M35 C 867 868 869 870 CKSQYB103K25
C 155 156 CKSYB224K16 C 873 CEAS471M35
C 159 160 CCSQCH330J50 C 874 CEAS331M25
C 163 164 CKSQYB473K25 C 875 876 877 878 CKSQYB471K50
Cc 901 220 w F/10V CCH1036
C 301 302 303 304 CEAS471M10
C 305 306 307 308 CCSQCH330J50
C 309 310 311 312 313 314 315 316 CFTNA224J50
C 317 318 319 320 321 322 323 324 CCSQCH390J50
C 325 326 327 328 329 330 331 332 CCCSL330J50
* The GM-X304/X1H/UC, GM-X404/X1H/EW and GM-X404/X1H/ES Parts Lists enumerate the parts which differ from
those for the GM-X404/X1H/UC only. The parts other than those enumerated in the GM-X304/X1H/UC, GM-
X404/X1H/EW and GM-X404/X1H/ES Parts Lists are identical with those in the GM-X404/X1H/UC Parts List, to which
you are requested to refer, accordingly. The GM-X404/X1H/UC Parts List is given on page 3.
areata, 1 GM-X404/X1H/UC | _GM-X304/X1H/UC | GM-X404/X1H/EW | GM-X404/X1H/ES
Circuit Symbol & No.
| PartNo. | PartNo. | PartNo. | PartNo.
CCS1242
RS1/10S223J
CCS$1242
VR153 CCS1242
R179,180
Volume 50k Q (C)

GM-xX404,x304
|
4,
CONNECTION
DIAGRAM(GM-X404/X1H/UC,EW,ES)
qo
ISOLATOR UNIT
Q6os O6i2 O204
aso
Q6o1
Q205
(C602
O04
Q607
O609
aso
613
Q303
a202
Clee
Q655
Q809
O207
G02
H6Ot
Q604
OSiz
@308
302
0902
Q301
Q305
O3n
Q307
(C302
G201
oss
iCt23
O18)
IC,
@
@80S
2306
a33e
G603
OG
0906
328
9605
Q350
Q60E
0314
G30
0326
0611
306
0309
G329
G33
0901
G325
C30}
O203
0331
G31S
i152
0903
327
O614
IC121
ICIS!
O1S2
AMPUNIT
CORD ASSY
REE aera
REZ ee
1 cere
- : |
REIT
ain
_
ees
/
oo oe ar
ea Be ak
ape O304) fo,
om RE
BS
led Ole
nt ISOLATOR UNIT
sown? eetes CNE63
CN86i, CN862
RIES Rae >
8349 cee ee
ISOLATOR UNIT
853 0853 gece ‘ O207 aBsr “ic8s)
mo ICBS¢ O854 Q210 ! Q208 “852 :CB5e
AMP UNIT [a4 ?icase fe emer OOORO): Aa Respro eucen
cNas4
20|
(ex
Re
meal
OESESEOTS:
oe
Fig.3

Soe
1
I
2
I
3
|
4
I
5
r
|
GM-xX404,x304
5.
SCHEMATIC
CIRCUIT
DIAGRAM(GM-X404/X1H/UC,EW,ES)
Ga, peach Sn ID Oe ae yg, Gf ge ee NR ome we SC og eg gg ees ees ae A et ee ea Vp oe agi Pa SS Me Foe tg Eee a pe wm area Amp Assy
a a : Consists of
F «Amp Unit
*lsolator Unit
7
i.
Vaiss
cesta
af
(pass
Boost
FREQUENCY)
PRE
ORIVER
POWER
AMP
A
i
R281
:CCS1241
(INPUT
LEVEL)
a
aA
a
BASS
8
:
fe Fl
on
|
serene
Ban
/
i
7
a
Ks
Jiszs
OVER
CURRENT
csniez9 /
2
Hpsozase
DETECTOR
a '> i ot hah Cs: 1 981
| | ws ici es
‘ i | | ee =) on [asst [Foes = acme
| ; — oT +. Co fey .: el |
I z a Fi
, = a153 O34 i fe EE ie
prs (eens
| FM wast lp a oa 4 ae .
| Hesse te
| ae # aed ae
‘
eles
|
1
=
hee
B
| ai
ie
ie
i = |
| i
BLch Ale
i
=
cys H
t “Tikt : .
at SS : FLAT AMP
n209 Bp is nc
rs i | i‘ .
: i VR282:CCS1241 (INPUT LEVEL)
e122
i]
Li
Suis
=
ounrae
ea OS 0 OP a RE EE ME AT |
Me a7 2a Seattle sl
cs
al
Er
|
as 0 eae |
‘
“PROTECTOR
POWER CONTROL |
—LMUTE CONTROL
“PROT croR] =
{_D +8
SUS no
Loree
GM-X484/X1H/EW, ES
indicates sto
$1@01:LPF/HPF SELECT differentiatio ade betw
SWITCH:
+-LPF-QFE-HPF
s a
dis
res
4 HPF T
poses Sees HPF ake Symbol indicates a capacitor. D
-QEEF No differentiation is made between chip
$851:RCA I heuer SeLect capacitors and discrete capacitor
H SWITCH -20H-
hk neon Gites . oes rer Decimal points for resistor
unde on. and capacitor fixed CN6S51
are expresse d as:
2.2~2R2 [3] Fig -4
Spo
ENEIEAES
[sta [3j2[i] .
1
i
2
|
3
|
4
|
5
6
r

GM-X404,X304
|
6.
CONNECTION
DIAGRAM(GM-X304/X1H/UC)
Q608 O62 0206
Q908
Q60}
Q205
ICGO2
Q304
Q6O7
A609
OGIO
613
Q303
Q202
i122
855
asos Qso7 Q602
1601
Q604
Q3i2
0308
0302
Qg02
Q301
0305
Q3n
Q307
1302
0201
O65
iCi23
Osi
IC,
@
Q8305
Q906
0332
Q603
O36
0904
0328 Q605
Q330
Q606
Q314
Q310
326
AGI
Q306
A309
Q329
O33
Q901
0325
(C30!
Q2030331
O315
ICiS2
0903
0327
Q6i4
Clas
iC1S1
owe
AMPUNIT
CORD ASSY
B
CORD
ASSY
i
ISOLATOR UNIT
i CN863
iISOLATOR UNIT
CN861, CNB62
Oe
2)
ior
Ss .
5)
Lead
fay.
po
&
ka)
y
ISOLATOR
UNIT
3).
C853. 853 2209 0207 85! cast
ca ICB54 854 Q2%0 Q20g 0852 Case
;
we
Se
SG.
SESS.
AMP
UNIT
AMP
UNIT
seheee
—
e
eC
a
ee
CN854
a eng = - ES i
aioe OOOOO000D
ee eae er ers
Z
AMP
UNIT
CN856
+—
10
1
:
|
|
|
|
|

]
;
i
2
l
3
I
4
|
5
|
GmM-x404,x304
7.
SCHEMATIC
CIRCUIT
DIAGRAM(GM-X304/X1H/UC)
AMP
UNIT
a
Oe
ae
Oe
ee
ee
eG
te
my oa
BO
ee
Se
a
Re
ee
Amp
Assy
T
|
Ruane
Consists
of
ane
+
Amp
Unit
:
°
«
Isolator
Unit
R151:
A
Vane!
ceatgar(inporeeeveure
PRE
oa
|
A
R137
im
sin
OVER
CURRENT
|
tq
_tswtans
ae
DETECTOR
a
me
|
BUFFER_AMP
1K
to
AMI
7¢121
‘ahi
ee
oo
|
i
1
‘
cs
|
a1
bey
’
i
Es:
na
an
i
Be
i
|
PS
i
aime
:
1
|]
aE
i
i]
(te
rl
ae
ie
5
=
|
ed
et
fp
Pir}
Zo
i
al
¥
re
ot
pe
|
P
OVER
B
nua
Lad
VOLTAGE
B
Pe
=
a
ee
2sbite8s
DETECTOR
327
{
f
;
b2458
a
f
SHY
45
70HA
(2/2)
a
aug
ft
Vs
ad
-
a
:
=:
=
i
tcser
leet
be
ae
cs
pS
'
'
ai
|
wre
|
|
ee
|
|
H
'
t
H
OVER
|
Se
|
‘OR
POWER
CONTROL
&
OVER
JMUTE
CONTROL
VOLTAGE
EE
PROTECT
_—
aE
|
ences
:
.
Ki
+8
[s3qhhe6
|
e
8
~
san
e
=
la
|
haa
So
aeaee
aeae
i
tr
7
SWITCHES:
NOTE:
oN
-
AMP
UNIT
<>
Symbol!
indicates
a
resistor.
iY
$101:
LPF/SHPF
rena
No
differentiation
is
made
between
chip
wite
a
.
~OFRF-HPF
resistors
and
discrete
resistors.
©
$102:HPF
SELEC
4K
Symbol!
indi
i
D
Swi
Fou
+
Pre
Fe pheeie
icates
@
capacitor.
$851:RCA
INPUT
§
EL
bean
capacitors
and
discrete
especitersy
‘
Switc
*2CH-—
,
abate
bates Sea
peareis
.
Soe
MHL
Decimal
points for
resistor
ndi
th
‘
and
capacit
fixed
CN6S1
are
expressed
as:
.
2.242R2
[
Fig.6
0.
ezacnez2
refs
Te]
75)
isia[s[2qs]
11
12
:
i
f
i
:
|
a
|
“5
|
6
r

GM-X404,xX304
8. EXPLODED VIEW
15
p------t-------
momo oon ne
ee
;
eee ree
5
ISOLATOR UNIT
a
a
a
aw
we
ee
ee
ee
ee
ee
Fig.7
14
13

| GM-X404,x304
NOTE:
@ Parts marked by “*”are generally unavailable because they are not in our Master Spare Parts List.
@ Parts marked by “@”are not always kept in stock. Their delivery time may be longer than usual or they may be
unavailable.
@ Parts List(GM-X404/X1H/UC)
Mark No. Description Part No. Mark No. Description Part No.
1 Screw BSZ30PO50FZK 30 Holder HNC5541
2 Screw(M3 x6) CBA1320 31 Holder HNC5841
3 Screw(M3 X 12) CBA1323 32 Heat Sink(Subheat Sink) HNR1352
4 Cord Assy HDE4427 33 Heat Sink(Subheat Sink) HNR1353
5-8 coves 34 Screw(M3 X5) CBA1330
9 Case HNB1837 35 Heat Sink HNR1339
10 Panel HNB1838 36 Plate Unit HXA7359
11 Panel HNB1839 37 Pin Jack(CN852) CKB1013
12,13 ceeee 38 Pin Jack(CN851) CKB1022
14 Spacer HNV3975 39 Terminal(CN601) CKE1036
15 Amp Assy HWH1184 40 Holder HNC5511
16 Screw(M3 x 10) CBA1322 41 Screw PPZ30PO60FZK
17 Cord CDE4610 42 Thermister(TH603) CCX1013
18 Plug(CN301) CKM1100 43 Diode(D609) RBV-602L
19 Plug(CN861) CKS 1037 44 FET(Q610-613) IRFIZ44G
20 Plug(CN862) CKS 1038 45 Thermister(TH601) CCX1009
21 Plug(CN863) CKS1618 46 Transistor(Q313-316) 2SD2343
22 Holder CNC2218 47 Transistor(Q329-332) 2SB 1587
23 Clamper CNV1335 48 Transistor(Q325-328) 2$D2438
24 Holder CNV4017 49° Screw PPZ30P060FZK
25 Connector HDE4428
* 26 Fuse(FU1) HEK0025
27 + ~Holder HNC5538
28 Holder HNC5539
29 Holder HNC5540
15

' GM-x404,x304
*
The
GM-X304/X1H/UC,
GM-X404/X1H/EW
and
GM-X404/X1H/ES
Parts
Lists
enumerate
the
parts
which
differ
from
those
for
the
GM-X404/X1H/UC
only.
The
parts
other
than
those
enumerated
in
the
GM-X304/X1H/UC,
GM-
X404/X1H/EW
and
GM-X404/X1H/ES
Parts
Lists
are
identical
with
those
in
the
GM-X404/X1H/UC
Parts
List,
to
which
you
are
requested
to
refer,
accordingly.
The
GM-X404/X1H/UC
Parts
List
is
given
on
page
15.
GM-X404/X1H/UC | GM-X304/X1H/UC | GM-X404/X 1H/EW | GM-X404/X1H/ES
ark No. Description | PartNo. = [PartNo. | PartNo. PartNo.
5 Cord Assy ooese HDE4419 HDE4419 HDE4419
*
6
Cord
seeee
HDE4423 HDE4423
HDE4423
7 Fuse soeee HEK0030 HEK0030 HEK0030
8 Cord soeee HDE4455 HDE4455 HDE4455
10 Panel HNB1838 eens HNB1838 HNB 1838
11 Panel HNB1839 seeee HNB 1839 HNB1839
12 Panel eoece HNB1870 eooee evcee
13 Panel eoece HNB1871 ooece eevee
15 Amp Assy HWH1184 HWH1186 HWH1185 HWH 1185
35 Heat Sink HNR1339 HNR 1377 HNR1345 HNR 1377
36 Plate Unit HXA7359 HXA7363 HXA7361 HXA7361
37 Pin Jack(CN852) CKB1013 soeee CKB1011 CKB1011
38 Pin Jack(CN851) ‘CKB1022 CKB1021 CKB1021 CKB1021
39 Terminal(CN601) CKE 1036 CKE1035 CKE1035 CKE 1035
49 Screw PPZ30PO60FZK seees PPZ30PO60FZK PPZ30PO060FZK
16

GM-x<404,x304
9. PACKING METHOD
6 Fig.8
@ Parts List(GM-X404/X1H/UC)
ark No. Description
GM-X404/X1H/UC_[GM-X304/X1H/UC_[GM-X404/x1H/EW [GM-X404/K TH/ES
1 Polyethylene Bag HEGO0009 HEG0009 HEGO0009 HEGO009
2 Cord Assy(Output) HDE4427 HDE4427 HDE4427
3 Cord Assy(Power Supply) | «+s HDE4419 HDE4419
4 Screw Assy HEAQ003 HEAO0003 HEA0003
1 Screw( x4) BYC40P180FZK BYC40P180FZK BYC40P 18)F-ZK
2 Polyethylene Bag HEG0011 HEGO011
5 Carton HHG0020 HHG0022
6 Contain Box HHLO020 HHL0022
7 Protector HHPO0O001 HHPO0001
8 Warranty Card HRY 1070 soeee
HRDOOO02
Owner's Manual
Owner's Manual
| PatNo. | Model _—s—si'(|-—s Language
HRDOOO01 GM-X304/X1H/UC English,French
HRDO002 GM-X404/X1H/UC English,French
HRDOOO0S
HRDO003 GM-X404/X1H/EW English,French,German,Dutch,Spanish, Swedish, Norwegian,Finnish,|tis an
HRDOOOS GM-X404/X1H/ES English,French,Spanish,Arabic
17

GM-X404,X304
10. OPERATIONS AND CONNECTION(GM-X404/X1H/UC)
(2)
(4) (5) (6) (7) (4) [8]
Setting of this Unit
(Fig. 9)
{1} Power indicator
The power indicator lights when the
power is switched on.
{2] RCA Input Select Switch
Fortwo-channel input, slide this switch
to the left. For four-channel input, slide
this switch to the right.
[3] BFC (Beat Frequency Control) Switch
If you hear a beat while listening to an
AM broadcast with your car stereo,
change the BFC switch using a small
screwdriver.
[4] Input Level Adjustment
Adjusting the input fevel controls A and
B will help match the output of the car
stereo to the Pioneer amplifier. Input
level control A is used to adjust the
volume of speaker output A; Input level
contro! B is used to adjust the volume of
speaker ouput B. Normally, set the
switch to the “500 mV” position. If the
Output is low even when the volume of
the car stereo is turned up, turn these
controls clockwise. If there is distortion
when the volume of the car stereo is
turned up, turn these controls clockwise.
* Ifyou only use one input pin plug, set
the input level controls for speaker
outputs A and B to the same position.
18
(3]
(12}
Fig. 9
ipo a, fas a ns ea tw ae i
¢ Set the input level control to 500 mV
when this amplifier is connected to a
Pioneer car stereo with RCA output
jacks. If the sound is too low or dis-
torts, adjust the input level control.
[5] Speaker Out A: LPF (Low-Pass Filter)/
HPF (High-Pass Fitter) Select Switch
Set the LPF/HPF select switch as follows
according to the type of the speaker that
is connected to the speaker output
connector and the car stereo system:
Audio frequency
range tobe output
LPF | Very-low-frequency
(left)
Sub-woofer
OFF Very-low-frequency
range to high-
frequency range
Speaker Type
Other than
(center) sub-woofer
HPF Low-frequency
Other than
range to high- suib:wootor
(right)
* frequency range
* Set the LPF/HPF select switch to the HPF
(right) position if you want to cut the very-
low-frequency range because it is not
necessary for the speaker you use.
[6] Speaker Out A: Bass Boost Level
Control
Bass boost level control can boost the
level around the frequency selected by
the bass boost frequency control to 0 to
12 dB.
[11}
(17}
CTia4]
OOS (20)
O@—!18)
Fig. 10
[7] Speaker Out A: Bass Boost Frequency
Control
You can select a bass boost frequency
from 40 to 120 Hz with the bass boost
control.
* [6] (7) can be adjusted only when the
LPF/HPF select switch is set to a position
other than HPF .
(8) Speaker Out 8: HPF (High-Pass Filter)
Select Switch
Set the HPF select switch as follows
according to the car stereo system and
the type of speaker connected to the
speaker output:
Audio frequency
range to be output Speaker The
Very-low-frequency
range to high-
frequency range
Sub-woofir
HPF Low-frequency
(right) | range to high-
Ld frequency range
Other than
sub-woofe
* Set the LPF/HPF select switch to the HPF
(right) position if you want to cut the ver;
low-frequency range because it is not
necessary for the speaker you use.

Connecting the Unit
C\ CAUTION
* Remove the negative (-) terminal of the
battery to avoid the risk of short-circuit
and damage to the unit.
Secure the wiring with cable clamps or
adhesive tape. To protect the wiring,
wrap adhesive tape around them where
they lie against metal parts.
Do not route wires where they will get
hot, for example where the heater will
blow over them. If the insulation heats
up, it may become damaged, resulting in
8 short-circuit through the vehicle body.
Make sure that wires will not interfere
with moving parts of the vehicle, such as
the gearshift, handbrake or seat sliding
mechanism.
Do not shorten any leads. Otherwise the
protection circuit may fail to work when it
should.
Never feed power to other equipment by
cutting the insulation of the power supply
wire to tap from the wire. The current
capacity of the wire will be exceeded,
causing overheating.
Always use the special red battery power
and ground wire [RD-222], which is sold
separately. Connect the special red
battery power cord directly to the car
battery and the black ground wire to the
car body. (The special red battery power
and ground wire {RD-222] are designed
so that the amplifier can be connected
safely.)
{12} Grommet
(13) Amplifier with RCA input pin jacks
[14} RCA input
[15] Car stereo with RCA output pin jacks
[16] External Output
For details on how to connect to RCA
input jacks A and B, see the
“Connecting the Speakers and Input
wires” section.
If only input pin plug, do not connect
anything to RCA input jack B.
[17] White
[18] Red
(19] Connecting wires with RCA pin plugs
(sold separately)
(20] RCA input pin jack A, B
(21] RCA output pin jacks
[22} Blue
Connect the male terminal of this wire
to the blue wire of the car stereo
(system control terminal). The female
terminal can be connected to the auto-
antenna relay control terminal.
\f the car stereo does not have a
system remote control terminal,
connect the male terminal to the power
terminal through the ignition switch.
{23] Speaker output terminal
See the “Connecting the Speakers and
Input wires” section for speaker con-
nection instructions.
@ To prevent damage
Do not ground the speaker wire directly
or connect a negative (-) wire for several
Speakers.
Speakers to be connected to the amplifier
should conform with the standards listed
below. Otherwise damage will be caused
to the speaker. The speaker impedance
must be 2 to 8 ohms.
Nominal input:
Faust Sub-woofer Min. 30 W
channel Other than | Max. input:
sub-woofer | Min. 60 W
Nominal input:
Two- Min. 70 W
channel
Other than | Max. input:
sub-woofer | Min. 140 W
Nominal input:
Sub-woofer Min. 30 W
Other than Max. input:
sub-woofer | Min. 60 W
Nominal input:
Three-
channel
Speaker
output A
Three-
channel
Speaker
Other than Max. input:
sub-woofer | Min. 140 W
output B
Connecting the Power Terminal
Always use the special red battery power
and ground wire [RD-222], which is sold
separately. Connect the special red
battery power cord directly to the car
battery and the black ground wire to the
car body. (The special red battery power
and ground wire [RD-222] are designed
so that the amplifier can be connected
safely.)
Pass the special red battery wire from the
engine compartment to the interior of the
vehicie.
Fuse
(30 A)
Interior of
the vehicle
Engine
compart-
ment ~~
Drill an 8-mm
Special red a
battery wire [RD-222] ae he
(sold separately) inawrcine
After making all
other connections
at the amplifier,
connect the battery
lead terminal of the
amplifier to the
positive (+) terminal
of the battery.
O-ring rubber
grommet into
the vehicle body.
Fig. 12
GM-xX404,X304
@ If many units are connected
'f you let the car engine idle for a long
time with the car stereo on, the battery
may go dead. Turn the car stereo off
when the engine is idling.
ed to the power terminal through the
ignition switch (12 VDC), the amplifier will
always be on when the ignition is on—
regardless of whether the car stereo is on
or off. Because of this, the battery could
go dead if you let the engine idle.
This unit is for vehicles with a 12-volt
battery and negative grounding. Before
installing it in a recreational vehicle, truck,
or bus, check the battery voitage.
Install and route the separately sold
special red battery wire (RD-222] as
faraway as possible from the speaker
wires. Install and route the separately
sold special red battery wire and ground
wire [RD-222)], speaker wires, and the
amplifier as faraway as possible from the
antenna, antenna cable and tuner.
(Fig. 10)
[9] Special red battery wire [RD-222}
(sold separately)
After making all other connections
at the amplifier, connect the battery
lead terminal of the amplifier to the
positive (+) termina! of the battery.
[10] Ground wire (black) (RD-222]
{sold separately)
Connect to metal body or chassis.
[11} Fuse (Special red battery power wire:
30 A, Amplifier: 25 A)
Connect the special red battery wire to the
POWER terminal (+), and the black ground
wire to the GND terminal (-).
POWER
terminal
Terminal
screw
GND
terminal
Terminal
screw
Ground wre
(black) (RD- 222]
Special red (sold separately)
battery wire [RD-222]
(sold separately)
Fig. 13 Fiy. 14
+ Securely fasten the special red battery
wire and the ground wires with term inal
screws.
Connecting the Speakers and lmput
wires
The speaker output mode can be fou
channel, three-channel (stereo + morp ) or
two-channel (stereo, mono). To connict the
speaker wires to suit the mode. Conmet the
speakers according to figures on follo-wing
pages.
if the biue lead of the amplifier is connect-
19
asbbonened seme ca ee

GM-X404,X304
@ @ 128) (32]
17} 118]
{32]
O7LA (181
{21]
133} [34]
Four-channe! mode (Fig. 15)
[2] RCA Input Select Switch
For two-channel input, slide this switch
to the left. For four-channel input, slide
this switch to the right.
[16] Output (Front/Rear)
If only one input pin plug is used, do not
connect anything to RCA input jack B.
[17] White
{18] Red
{19] Connecting wires with RCA pin plugs
{sold separately)
[21] RCA output pin jacks
[24] Speaker out B: Speaker (right)
[25] Speaker out B: Speaker (left)
[26] Speaker out A: Speaker (left)
[27] Speaker out A: Speaker (right)
[28] Black cover
[29] Black stripe
[30] Green cover
[31] Green stripe
[32] To RCA input pin jacks
[33] RCA input pin jack A
[34] RCA input pin jack B
* Connect the front or rear output pin plugs
to jacks {33] or [34], according to your
system.
{35} tf only one input pin plug is used, do not
connect anything to RCA input jack B.
Three-channel mode (Fig. 16)
[2] RCA Input Seiect Switch
For two-channel input, slide this switch
to the left. For four-channel input, slide
this switch to the right.
[16] Output (Front/Rear)
If only one input pin plug is used, do not
connect anything to RCA input jack B.
[17] White
[18] Red
{19] Connecting wires with RCA pin plugs
(sold separately)
[24] Speaker out B: Speaker (right)
[25] Speaker out B: Speaker (left)
[28] Black cover
[29] Black stripe
{30] Green cover
{31} Green stripe
[32] To RCA input pin jacks
[33] RCA input pin jack A
[34] RCA input pin jack B
* Connect the front or rear output pin plugs
to jacks (33) or [34], according to your
system.
(35) If only one input pin plug is used, do not
connect anything to RCA input jack B.
[36] No connection
[37] Speaker out A: Speaker (mono)
(36)
(17)
119}
(16)
Fig. 17
(321 (47
(18]
U7]
\ 119]
128] 116)
Fig. 18
20
Two-channel mode (stereo) (Fig. 17)
{2] RCA Input Select Switch
Slide this switch to the left.
[16] Output
(17} White
[18] Red
[19] Connecting wires with RCA pin plugs
(sold separately)
[21] RCA output pin jacks
[28] Black cover
[29] Black stripe
[30] Green cover
[31] Green stripe
[32] To RCA input pin jacks
[33] RCA input pin jack A
[36] No connection
[38] Speaker (right)
[39] Speaker (left)
Two-channel mode (mono) (Fig. 18)
[2] RCA Input Select Switch
Slide this switch to the left.
{16} Output
[17] White
[18] Red
{19} Connecting wires with RCA pin plugs
(sold separately)
{21} RCA output pin jacks
(28] Black cover
{29] Black stripe
{30] Green cover
[31] Green stripe
[32] To RCA input pin jacks
{33] RCA input pin jack A
[36] No connection
[40] Speaker (mono)
Installation
“\ CAUTION
* Do not install in:
— Places where it could injure the driver
or passengers if the vehicle stops
suddenly.
— Places where it may interfere with the
driver, such as on the floor in front o!
the driver's seat.
Make sure that wires are not caught in he
sliding mechanism of the seats, resulting
in @ short-circuit.
Confirm that no parts are behind the
panel when drilling a hole for installation
of the amplifier. Protect all cables and
important equipment such as fuel lines,
brake lines and the electrical wiring fron
damage.
Install tapping screws in such a way tha
the screw tip does not touch any wire.
This is important to prevent wires from
being cut by vibration of the car, which
can result in fire.
To ensure proper installation, use the
supplied parts in the manner specified. f
any parts other than the supplied ones
are used, they may damage internal pats
of the amplifier, or they may become
loose and the amplifier may shut down,

GM-X404,x304
11. OPERATIONS AND CONNECTION(GM-X304/X1H/UC)
Setting of this Unit
(Fig. 19)
[1} Power Indicator
The power indicator lights when the
power is switched on.
[2] RCA Input Select Switch
For two-channel input, slide this switch
to the left. For four-channel input, slide
this switch to the right.
[3] BFC (Best Frequency Control) Switch
If you hear a beat while listening to an
AM broadcast with your car stereo,
change the BFC switch using a small
screwdriver.
(4) Input Level Adjustment
Adjusting the input level controls A and
8 will help match the output of the car
stereo to the Pioneer amplifier. Input
level control A is used to adjust the
volume of speaker output A; Input level
control B is used to adjust the volume of
speaker ouput B. Normally, set the
switch to the “500 mV” position. If the
output is low even when the volume of
the car stereo is turned up, turn these
controls clockwise. If there is distortion
when the volume of the car stereo is
turned up, turn these controls clockwise.
+ If you only use one input pin plug, set
the input level controls for speaker
outputs A and B to the same position.
* Set the input level control to 500 mV
when this amplifier is connected to a
Pioneer car stereo with RCA output
jacks. If the sound is too low or dis-
torts, adjust the input level control.
[5] Speaker Out A: LPF (Low-Pass Fitter)/
HPF (High-Pass Filter) Select Switch
Set the LPF/HPF select switch as follows
according to the type of the speaker that
is connected to the speaker output
connector and the car stereo system:
LPF/HPF
Select
Switch
LPF
|
Very-low-frequency
Audio frequency
range to be output
OFF Very-low-fr equency | Other than
(center) | "ange to high- sub-woofer
frequency range
HPF Low-frequency
(right)
|
range
to
high-
* frequency range
Other than
sub-woofer
* Set the LPF/HPF select switch to the HPF
(right) position if you want to cut the very-
low-frequency range because it is not
necessary for the speaker you use.
{6] Speaker Out A: Bass Boost Level
Control
Bass boost level contro! can boost the
level around 60 Hz to 0 to 12 dB.
110}
{10]
{8}
[9]
(14] {14} [13]
Ci
Com
[16] (15) 115)
[14} 115]
Fig. 20
* Bass boost level control can be adjusted
only when the LPF/HPF select switch is
set to a position other than HPF .
[7] Speaker Out B: HPF (High-Pass fitter)
Select Switch
Set the HPF select switch as follows
according to the car stereo systen and
the type of speaker connected tothe
HPF
Select Audio frequency
Switch | "ange to be output
OFF Very-low-frequency | Othr than
range to high-
frequency range
(left) subwoofer
HPF Low-frequency
{right) | range to high-
cd frequency range
Othr than
subwoofer
“ Set the HPF select switch to the HF: ( right)
position if you want to cut the venlow-
frequency range because it is not tecessary
for the speaker you use.
speaker output:
21
Ps ee oe OR aed

GM-xX404,x304
Connecting the Unit
A\ CAUTION
Remove the negative (-) terminal of the
battery to avoid the risk of short-circuit
and damage to the unit.
Secure the wiring with cable clamps or
adhesive tape. To protect the wiring,
wrap adhesive tape around them where
they lie against metal parts.
Do not route wires where they will get
hot, for example where the heater will
blow over them. If the insulation heats
up, it may become damaged, resulting in
8 short-circuit through the vehicle body.
Make sure that wires will not interfere
with moving parts of the vehicle, such as
the gearshift, handbrake or seat sliding
mechanism.
Do not shorten any wires. Otherwise the
protection circuit may fail to work when it
should.
Never feed power to other equipment by
cutting the insulation of the power supply
wire to tap from the wire. The current
capacity of the wire will be exceeded,
causing overheating.
Be sure to use the special red battery wire
supplied with the amplifier and connect
directly to the battery. Use the supplied
black ground wire and connect to the
vehicle body. (The supplied special red
battery and ground wires are designed so
that the amplifier can be connected
safely.)
{18} Blue
Connect the male terminal of this wire
to the blue wire of the car stereo
(system control terminal). The female
terminal can be connected to the auto-
antenna relay control terminal.
lf the car stereo does not have a
system remote control terminal,
connect the male terminal to the power
terminal through the ignition switch.
[19] Speaker output terminals
22
See the “Connecting the Speakers and
Input wires” section for speaker con-
nection instructions.
@ To prevent damage
.
Do not ground the speaker lead wire
directly or connect a negative (—) lead
wire for several speakers.
Speakers to be connected to the amplifier
should conform with the standards listed
below. Otherwise damage will be caused
to the speaker. The speaker impedance
must be 2 to 8 ohms.
This unit is for vehicles with a 12-volt
battery and negative grounding. Before
installing it in a recreational vehicle, truck,
or bus, check the battery voltage.
* Install and route the sold separately
special red battery wire supplied with the
amplifier as faraway as possible from the
speaker wires. Install and route the
battery wire, ground wire, speaker wires,
and the amplifier as faraway as possible
| Channei | Type
Four-
channel Other than
sub-woofer
Two-
channel Other than
sub-woofer
Three-
channel
Speaker
output A
Nominal input:
Min. 30 W
Max. input:
Min. 60 W
Nominal input:
Min. 70W
Max. input:
Min. 140 W
Three-
channel
Speaker
output B
Connecting the Power Terminal
Be sure to use the special red battery wire
supplied with the amplifier and connect
directly to the battery. Use the supplied
black ground wire and connect to the
vehicle body. (The supplied special red
battery and ground wires are designed so
that the amplifier can be connected
safely.)
Pass the special red battery wire from the
engine compartment to the interior of the
vehicle.
Fuse : -
(30 A) Engine Interior of
compart- the vehicle
ment “i *
Special red
battery wire
After making all
other connections
at the amplifier,
connect the battery
wire terminal of the
Drill an 8-mm
hole into the
vehicle body.
insert the
O-ring rubber
grommet into
the vehicle body.
amplifier to the
positive (+) terminal
of the battery.
Fig. 22
Nominal input:
Other than Max. input:
sub-woofer | Min. 60 W
Nominal input:
Other than Max. input:
sub-woofer | Min. 140 W
from the antenna, antenna cable and
tuner.
(Fig. 20)
{8] Special red battery wire
After making all other connections
at the amplifier, connect the battery
lead terminal of the amplifier to the
positive (+) terminal of the battery.
Ground wire (black)
Connect to metal body or chassis.
[10] Fuse (Special red battery power wire:
30 A, Amplifier: 25 A)
{11] Grommet
[12] Car stereo with RCA output pin jacks
[13] External Output
For details on how to connect to RCA
input jacks A and B, see the
“Connecting the Speakers and Input
wires” section.
If only one input pin plug, do not
connect anything to RCA input jack B.
[14] White
[15] Red
(16] Connecting wires with RCA pin plugs
(sold separately)
[17] RCA input pin jack A, B
[9]
Connect the special red battery wire to thr
POWER terminal (+), and the black ground
wire to the GND terminal (-).
POWER Terminal
terminal screw
Terminal GND
rs screw terminal
i
ae
‘ Ground wire
(black)
Special red
battery wire
Fig. 23 Fig. 24
+ Securely fasten the special red battery
lead and the ground wires with terminal
screws.
Connecting the Speakers and Input
wires
The speaker output mode can be four-
channel, three-channel (stereo + mono) or
two-channel (stereo, mono). Connect the
speakers according to figures on following
pages.

Four-channel mode (Fig. 25)
[2] RCA Input Seiect Switch
For two-channel input, slide this switch
to the left. For four-channel input, slide
this switch to the right.
[13} Output (Front/Rear)
if only one input pin plug is used, do not
connect anything to RCA input jack B.
[14] White
{15] Red
{16] Connecting wires with RCA pin plugs
{sold separately)
{20) Speaker out B: Speaker (right)
{21} Speaker out B: Speaker (left)
[22] Speaker out A: Speaker (left)
{23] Speaker out A: Speaker (right)
{24} Black cover
[25] Black stripe
{26] Green cover
[27] Green stripe
[28] RCA input pin jack A
[29] RCA input pin jack B
* Connect the front or rear output pin plugs
to jacks [28] or [29], according to your
system.
{30] if only one input pin plug is used, do not
connect anything to RCA input jack B.
GM-X404,x304
Three-channel mode (Fig. 26)
[2] RCA input Select Switch
For two-channel input, slide this switch
to the left. For four-channel input, slide
this switch to the right.
[13] Output (Front/Rear)
If only one input pin plug is used, do not
connect anything to RCA input jack B.
{14] White
[15] Red
[16] Connecting wires with RCA pin piugs
(sold separately)
[20] Speaker out B: Speaker (right)
[21] Speaker out B: Speaker (left)
[24) Black cover
[25] Black stripe
[26] Green cover
(27] Green stripe
[28] RCA input pin jack A
[29] RCA input pin jack B
* Connect the front or rear output pin plugs
to jacks [28] or [29], according to your
system.
[30] If only one input pin plug is used, do not
connect anything to RCA input jack B.
{31] No connection
{32] Speaker out A: Speaker (mono!
{16]
Fig. 27
{13]
Two-channel mode (stereo) (Fig. 27}
{2] RCA Input Select Switch
Slide this switch to the left.
[13] Output
[14] White
[15] Red
[16] Connecting wires with RCA pin plugs
(sold separately)
{24] Black cover
{25] Black stripe
{26] Green cover
[27] Green stripe
[28] RCA input pin jack A
[31] No connection
[33] Speaker (right)
[34] Speaker (left)
Two-channel mode (mono) (Fig. 28)
[2] RCA Input Select Switch
Slide this switch to the left.
{13) Output
(14] White
[15] Red
[16] Connecting wires with RCA pin plugs
(sold separately)
[24] Black cover
[25] Black stripe
[26] Green cover
[27] Green stripe
[28] RCA input pin jack A
[31] No connection
[35] Speaker (mono)
Installation
QS CAUTION
* Do not install in:
— Places where it could injure the driver
or passengers if the vehicle stops
suddenly.
— Places where it may interferewith the
driver, such as on the floor infront of
the driver's seat.
Make sure that wires are not caught in the
sliding mechanism of the seats, re sulting
in a short-circuit.
Confirm that no parts are behind the
panel when drilling a hole for installation
of the amplifier. Protect all cables and
important equipment such as fue! lines,
brake lines and the electrical wiing from
damage.
Install tapping screws in such away that
the screw tip does not touch any wire.
This is important to prevent wins from
being cut by vibration of the car, which
can result in fire.
To ensure proper installation, ue the
supplied parts in the manner spic éfied. If
any parts other than the suppliel ones
are used, they may damage inten al parts
of the amplifier, or they may beiorne
loose causing the amplifier maysFaut
down.
23
lpi aS an it Ny gta te wp