Aiphone BX-300 User's Manual

Aiphone BX-300 User's Manual
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BX-NOO-1 0186
. BX-300 (30 watt), BX-600 (60 watt), BX-1200 (120 watt)
—INSTRUCTIONS —
The BX. series Mixer Amplifiers, BX-300, -600, -1200 are designed for years of trouble-free use in diverse
commercial and industrial applications. They incorporate the necessary features and functions needed
for use in paging, announcing, intercommunication and background music systems in conjunction with
Aiphone or other communication systems,
Overload protection circuitry prevents damage from either open or short speaker circuits with an attrac-
tive LED Peak Meter for visual output monitoring.
A switchable Manual/Automatic Music Muting Circuit offers an adjustable music muting level for back-
ground music systems.
я e E A
( FEATURES )
+
Output Overload Protection Circuitry.
* Attractive LED Peak Meter.
Convenient volume controls including a Master volume control and individual volume controls.
Individual Bass and Treble tone controls.
Unique Automatic Music Muting circuit permits adjusting the muting level. (Switchable to manual
muting).
19’ rack mountable with handles.
Frequency response: 50Hz — 15KHz =1dB.
Low distortion: Less than 1% THD at rated output.
Professional appearance,
WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS
APPLIANCE TO RAIN OR MOISTURE.
— 1.
(SPECIFICATIONS )
Modeis and Output Power 3X-300
BX-600
ЗО watt rms. at 1KHz, AC-120 volt
60 watt rms. at TKHz, AC-120 volt
BX-1200 120 watt rms. at 1KHz, AC-120 volt
Frequency Response:
50 — 15,000 Hz + 1dB
Distortion: Less than 1% THDat 1KHZz, rated output
inputs:
ВХ-300 .....,....... Six inputs, Four Channels
Sensitivity Impedance
Mic-1 3mV (-50dB) 20K ohm (unbal.)
Mic-2 0.5mV(-66dB} 600 ohm (balanced)
Mic-3 0.5mV{-66dB) 600 ohm (balanced)
seine inputs
Phone 138mV (-17dB) 600 ohm (unbal.)
AUX 100mV (-20dB) 250K ohm {unbal.}
Ш inputs
Phono 2.5mV (-52dB) 50K ohm (unbal.)
BX-600,-1200 ............. Eight inputs, Six Channels
Sensitivity impedance
Мю 3mV (-50dB) 20K ohm (unbal.)
Mic-2 0.5mV(-66dB) 600 ohm (balanced)
Mic-3 0 5mV(-66dB} 600 ohm (balanced)
Mic-4 0.5mV(-66dB) 600 ohm (batanced) TT
| selective inputs:
Phone 138mV (-17dB) 600 ohm (unbal.)
AUX-1 100mV (-20dB) 250K ohm (unbal.)
AUX-2 100mV (-20dB) 250K ohm {unbal.)
| Selective inputs
Phono 2.5mV (-52dB) 50K ohm (unbal.)
Outputs: 4 8, 16 ohms, 25,70.7 volts balanced
Line output (1v/600 ohm)
Noise Level:
Master volume control at 0 ......
aa es 80dB below rated output
Microphone........oreedrrooreraenervae.
Auxiliary
+ : KW + & 4 = ® ®F F 4 Fy KH BF & & BF BF 4&4 F& BB 4 IW
60dB below rated output
74dB below rated output
I
Tone Controls:
BSS. RR eee, + 10dB at 100Hz
Treble ee ee eee + 10dB at 10KHz
Indicators:
1-Power Lamp (LED), 1-Overioad Lamp (LED)
1-Peak indicator {10 LEDs -20, -18, -15, -12, -9, -6, -3, 0, +1, +3dB)
Protection:
AC line fuse {Primary AC circuit)
Overload protection circuitry (Built-in)
Music Muting Level:
-3 to -40dB adjustable
Connections:
Inputs:
1 ET 4 44 4 44 4 4 44 4 4 a ae a 0 0 0 au 0 5 Phone jack {front panel)
Mic-2....... Canon XLR {or Switchcraft C3F) {only BX-600, -1200)
Mic-3, 4111114 ier re 8 A 14 0 4 a a nu 0 Screw terminals
AUX, ÁUX-1,2.....o..earecroocanvonrere once RCA Phono jacks
Phone ....... o e eeeosmoraoroesercecrvoraroa ade, Screw terminals
Phono........oeerererereorerareorsrersaracaa RCA Phono jack
Outputs:
à 8B, 180M... eee a 40 Screw terminals
25, 70,7 volt .......... o ;exarrererederoo arco. Screw terminals
Line OUtpUut..........oeeooecarerreredrereoo nn RCA Phono jack
Others:
Manual Muting ......e _..eo.-recsreonrernareco oa. Screw terminals
DC132voltinput........ N Screw terminals {only BX-300)
AC 120 volt output ...... 2 prong AC outlet (unswitched, 100 watt)
Power Supply:
110 — 120V AC, 50/60Hz
13.2V/6.6A DC (only BX-300)
Power Consumption:
No signal Rated output
BX-300 18W 155W
BX-600 26W 190W
BX-1200 32W 370W
Ambient Temperature Range: 14°F to 140°F {-10°C to 60°C)
Dimensions (W x H x D}:
BX-300 19" x 34" x 10-9/16" (482m/m x 88m/m x 268m/m}
BX-600 19" x 54/16" x 10-9/16" (482m/m x 132m/m x 268m/m)
BX-1200 19” x 5-4/16” x 10-9/16" (482m/m x 132m/m x 268m/m)
Weight: >
BX-300 17 81bs (8.1 kg) BX-600 —25.51bs(11.6 kg)
BX-1200 31.9155 (14.5 Кд)
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.
(NAM ES/FUNCTIONS )
BX-300: |
1) Power Switch 8 9
2) Power indicator (LED)
3) Overload Indicator (LED)
4) MIC-1 Input Phone Jack
5) Bass Tone Control
)
)
)
ооо ве
6} Treble Tone Control
7) AUX/PHONO Select Switch
8) Peak Indicator (LED)
9) MIC-1 Volume Control
10) MIC-2 Volume Control
11) MIC-3/PHONE Volume Control
12) AUX/PHONO Volume Control
13) MASTER Volume Control
14) GROUND Terminal
15) MIC-3 Input Terminals
16) MIC-2 input Terminals
17) AUTO/MANUAL Muting Control Select Switch
18) Muting Level Control
19) Low Impedance Output Terminals
20) AC Fuse (2A)
21) AC Outlet (Max. 100W, unswitched)
22} AC Power Supply Cord
23} PHONO Input Jacks
24) AUX Input Jacks
25) MIC-3/PHONE Select Switch
26) PHONE Input Terminals
27) Manual Muting Control Terminals
28) Constant Voltage Output Terminals (25, 70.7V) La
29) Line Output Jack
30) DC 13.2V Power Input Terminals
23 2425 26 27 28
15 20 21 22
16 1718
J
BX-600, -1200:
1) Power Switch 10 14 12 13 14 15
2) Power Indicator (LED)
3) Overload Indicator {LED)
4) BASS Tone Control
5) TREBLE Tone Control
)
)
6) MIC-1 Input Phone Jack
7) AUX-1 Volume Control
8) AUX-2/PHONO Volume Control
9) AUX-2/PHONO Select Switch
10) PEAK Indicator (LED)
11) MIC-1 Volume Control
12) MIC-2 Volume Control
13) MIC-3 Volume Control
14) MIC4/PHONE Volume Control
15) MASTER Volume Contro!
16) GROUND Terminal
17) MIC-2 Input XLR Receptacle
18) MIC-4 Input Terminals 25 2827 2829 30 3132 33
19) MIC-3 Input Terminals
20) MIC4/PHONE Select Switch
21) PHONE Input Terminals
22) AC Fuse (2.5A for BX-600, 5A for BX-1200)
23) AC Outlet (Max 100W, unswitched)
24) AC Power Supply Cord
25) PHONO input Jacks
26) AUX-2 Input Jacks AVANT он
27) AUX-1 Input Jacks Tes Tr По
28) AUTO/MANUAL Muting Control Select Switch
29) Manual Muting Control Terminals T T
30) Muting Level Control 18 17 18 1920 2 22 23 24
31) Line Output Jack
32) Low Impedance Output Terminals
33) Constant Voltage Output Terminals
( INSTALLATION )
Unpacking:
Upon receiving unit(s), please inspect for any damage incurred in transit. If damage is found, please notify
your Aiphone Distributor or representative immediately.
Connections:
An AM/FM tuner, cassette player, remote microphone, chime or other high level signal source may be
connected to high impedance inputs with a singleconductor low capacitance shielded cable,
A high impedance microphone with a single conductor shielded cable of 30" to 60" {10 to 20m) length
can be plugged into the MIC-1 input on the front panel.
Make certain that all input cables are kept away from speaker cables, power cables and power trans-
formers.
Speaker cables must also be kept away from power cables.
A
Grounding the Unit: >
The chassis of the unit must be grounded by using the GROUND terminal located on the back.
The amplifier must be connected to an earth ground such as a cold water pipe or a substitution of the
ground. If additional equipment is installed along with the amplifier, make sure that the additional
chassis are also grounded.
DC Power Connection (only BX-300):
The unit may also be powered by an external 12 volt battery or other direct current source with negative
{+} as ground.
Power connection is made at the DC terminal strip on the back panel.
Ventilation:
In order to offset the heat generated by the unit, it is necessary to provide ample ventilation around the
unit.
Avoid blocking or impeding the ventilation holes and slits on the unit.
Locate the unit where it is free from direct sunlight, humidity, dust circulation or vibrations to prevent
any unnecessary problems,
(INPUT CONNECTIONS )
Microphones:
Three microphone inputs on the BX-300 and four microphone inputs on the BX-600 and BX-1200 are
provided.
They may be used with balanced or unbalanced high impedance (20K ohm) or low impedance {200 ohm)
microphones. An unbalanced microphone with 30’ to 60’ {10 to 20m) of cable may be used, but results
will depend on the microphone and its characteristics.
MIC-1, MIC-2, MIC-3 and MIC-4:
The MIC-1 input is unbalanced high impedance and is provided with a 4’ phone jack located on the
front panel.
MIC-2, -3, À inputs are balanced low impedance and all are located on the back panel.
Unbalanced High Impedance Microphone:
Use with single conductor shielded cable.
Unbalanced microphone Single pole phone plug
—B—
Balanced Low Impedance Microphone:
Use with two conductor shielded cable.
) Balanced microphone
MIC Input Terminal
Canon XLR-M
Balanced Microphone
Unbalanced Low Impedance Microphone:
Use with single conductor shielded cable.
Unbalanced Microphone
Unbalanced Microphone MIC input Terminal
Canon XLR-M
Phonograph:
A magnetic phonograph cartridge may be connected to PHONO input,
A ceramic or crystal cartridge pick-up may be connected to AUX, AUX-1 or AUX-2 input. Use a single
conductor or two conductor shielded cable, and ground the separate ground wire from the player to
GROUND terminal on the back panel.
% Connect to the GND (+)
_L terminal of the amplifier
*There are two PHONO jacks (R and L} provided for the connection with stereo player. The R and L
channels will be mixed automatically.
Auxitiary (AUX, AUX-1 8: AUX-2):
An AM/FM tuner, tape player, remote microphone, chime, mixer preamplifier or other high level signal
sources may be connected to the AUX, AUX-1 or AUX-2 input.
Use single or two conductor shieided cable.
From unbalanced type AUX, AUX-1, 2
output equipment Lor R
-
AUX, AUX1, AUX?
>" ©
From Stereo Type
Output equipment
A
> From balanced type AUX AUX-1 -2
. output equipment ‘Бо В,
y
* There are two jacks {R and L) provided for connection with any stereo signal source. The R and L
channels will be mixed automatically.
Telephone:
ny
A voice signal from the telephone system {600 ohm, unbalanced) may be connected to the PHONE input. »
Use single hiel
gle or two conductor shielded cable PHONE
@ | +
| | —
РНОМЕ
From telephone system
NOTE:
The following combination of two inputs cannot be used at the same time. They are selectable using
the select switches located .on the front and back panel.
BX-300 — Either MIC-3 or PHONE, and AUX or PHONO.
— PHONE + AUX /PHONO
| eS ¡QC
PHONE — —— MIC 3
| - BACK PANEL FRONT PANEL
—MIC 3 —
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E [a pee) i
3 a 2 -, PHONG J
BX-600, -1200 — Either MIC-4 or PHONE, and AUX-2 or PHONO.
FHONE
BACK PANEL A
DA SEN ESE
e AUX 2 / PHONG
wl E, AUX
RL , | I] FRONT PANEL
— MIC 4 — p— MIC 3 = т
Py AE am PHONO
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3 1 2 3 1 2
+ +
( OUTPUT CONNECTIONS )
Speaker Output
The amplifier may be used in conjunction with a speaker rated at 4, 8 and 16 ohms or with balanced 25
volt or 70.7 volt constant voltage speaker systems.
Low Impedance Qutput{4, 8 and 16 ohm):
The 4, 8 and 16 ohm output terminals are provided for the connection of a few large-output speakers. N
This applies when a constant voltage speaker system is unnecessary or in case the distance between the )
amplifier and the speakers is less than 200’ or 60m,
it is requested that the total speaker load impedance be correctly matched to the output impedance of
the amplifier for the most efficient transfer of power.
Be sure that total impedance of speakers is above 4, 8 or 16 ohms. However, do not use a speaker rated
at less power than the amplifier is capable of producing, otherwise the speaker will be damaged.
Ty
12 (7
1682 1652 1682 1682
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0Q 45 45
25 volts and 70.7 volts Output:
When it is desired to operate the speaker from a distance of over 200” (60m) from the amplifier and/or
| the system requires more than four speakers, it is recommended that line matching transformers be
3 used for the speakers to prevent excessive line losses.
This method of load matching is known as the constant voltage distribution system, and eliminates the
calculation of load impedance and series-parallel speaker arrangements. In this method, al! speakers are
connected in paraliel.
These constant voltage outputs are most convenient for distribution of power when a number of speakers
are installed. Each speaker must have 25 volt or 70.7 voit line transformer with a tap that gives the power
desired for that speaker. The total number of power settings for all speakers should be equal to the
amplifier power rating or less.
O _ — O +
70.7V 70.7V 70.7V 25V 25V 25V
oo [I Los [НО
Line Output:
To operate a booster amplifier or tape recorder, use single conductor shielded cable with an RCA phono
plug from the LINE OUT to the input of the booster amplifier or tape recorder.
This output is subject to all settings of each input gains, master gains and tone controls.
LINE OUT
(о to booster amplifier
or tape recorder
(OPERATIONS: )
Volume Control Setting:
For an average input signal, the MASTER volume control should be set to the middle. Relative to the
other input levels, it is recommended that the gains or losses be equally divided between individual
controls and the master control,
Tone Controls:
The separate tone controls provide boost and alternation of bass and treble response. The flattest res-
ponse is obtained when knobs are set to zero “07,
Turn BASS control knob or TREBLE control knob clockwise to raise the appropriate tone level by
approximately + 10dB, turn counter-clockwise to lower tone level by approximately — 10dB.
Peak Indicator:
Each of the LEDs of the PEAK INDICATOR Panel indicates output level.
When voice or music is amplified, set the volume control knob at the position where the maximum out-
put level is below zero “0”.
——— PEAK INDICATOR —
0 00 00 O00 0 со
dB-20 18 15 12 9 6 3 0 1 +3 dB
Overtoad:
If the external load exceeds the rated power, a protection circuit will respond and protect the amplifier
immediately {even if the load is short-circuited). The protective circuit will be activated by loading 1.5
times over the rated output power.
When the OVERLOAD indicator is lit, turn off the POWER and check the output circuit. When proper
operating conditions have been secured, turn the POWER on, and make sure OVERLOAD indicator is
off, otherwise recheck the output circuit,
Music Muting Control:
The voice activated microphone precedence control circuitry offers smooth and natural voice announce-
ment.with reduced soft music in the background.
When announcements are made through microphones (MIC-1, MIC-2, MIC-3, MIC-4, PHONE), the
electronic precedence control circuit automatically alternates the level of the background music AM/FM
radio broadcast, music tape, or other sources, allowing you to make announcements which are clear and
more attractive.
The leve! of the music source is automatically returned to normal when the announcements is finished.
The muting level is adjustable within a range from —3 to —40dB with MUTING LEVEL control located
on the back panel.
The precedence control circuit can also be activated by an external dry contact. The AUTOMATIC and
MANUAL control mode switch is also located on the back panel.
MANUAL MUTING MUTING LEVEL
— AUT .
O— — MANU
> NED IED IED OC AZ:
MUTING LEVEL | MIN | МАХ
MANUAL — MUTING
AUTO E — MANU O):
MIN , MAX ED | EDI EDI
mio
BX-300 BX-600, -1200
=
CAUTION: TO PREVENT ELECTRIC SHOCK. DO NOT REMOVE CABINET.
NO USER SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
EOE OK OWE ON OF OK OK OX + о * ох Же * + + * *
We at AIPHONE are proud of our products. Our designers and engineers strive to bring you the
finest in sound equipment. Each item has been carefully tested and inspected before leaving our factory.
Properly installed and used, your Aiphone sound system should give years of troubiefree service.
We are pleased to offer the following warranty:
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WARRANTY
Aiphone warrants its products to be free from defects of material and workmanship under normat
“À use and service for a period of one year after delivery to the ultimate user and will repair free of
charge or replace at no charge, should it become defective upon which examination shall disclose
to be defective and under warranty. Aiphone reserve unto itself the sole right to make the final
decision whether there is a defect in materials and/or workmanship; and whether or not the prod-
uct is within the warranty,
This warranty shall not aoply to any Aiphone product which has been subject to misuse, neglect,
accident, or to use in violation of instructions furnished, nor extended to units which have been
repaired or altered outside of the factory,
This warranty does not cover batteries or damage caused by batteries used in connection with the
product.
This warranty covers bench repairs only, and any repairs must be made at the shop or place des-
ignated in writing by Aiphone. Aiphone wil not be responsible for any costs incurred involving on
site service calls.
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Aiphone Corporation, Bellevue, Washington 98005
BX-NOO-1 0186
Printed in Tatwan
— 12—
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