LTO PBM8.250/ MKII User manual

PBM8.250/ MKII8.500
POWERED BOX MIXER
OWNER'S MANUAL
www.altoproaudio.com
Version 2.0 NOV. 2007
LTO
R
English

CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
TO REDUCE THE RISK OF ELECTRIC SHOCK
PLEASE DO NOT REMOVE THE COVER OR
THE BACK PANEL OF THIS EQUIPMENT.
THERE ARE NO PARTS NEEDED BY USER
INSIDE THE EQUIPMENT. FOR SERVICE,
PLEASE CONTACT QUALIFIED SERVICE
CENTERS.
WARNING
To reduce the risk of electric shock
and fire, do not expose this equipment
to moisture or rain.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Dispose of this product should
notbeplacedinmunicipalwaste
and should be separate collection.
11.
12.
MovethisEquipmentonlywithacart,
stand, tripod, or bracket,
specified by the
manufacturer, or
sold with the
Equipment. When
a cart is used, use
caution when
moving the cart /
equipment
combination to
avoid possible
injury from tip-over.
Permanent hearing loss may be caused by
exposure to \ extremely high noise levels.
The US. Government's Occupational Safety
and Health Administration (OSHA) has
specified the permissible exposure to noise
level.
These are shown in the following chart:
HOURS X DAY SPL EXAMPLE
According to OSHA, an exposure to high SPL in
excess of these limits may result in the loss of
heat. To avoid the potential damage of heat, it is
recommended that Personnel exposed to
equipment capable of generating high SPL use
hearing protection while such equipment is
under operation.
8
6
4
3
2
1,5
1
0,5
0,25 or less
90
92
95
97
100
102
105
110
115
Small gig
train
Subway train
High level desktop monitors
Classic music concert
Rock concert
This symbol, wherever used, alerts you to the
presence of un-insulated and dangerous voltages
within the product enclosure. These are voltages that
may be sufficient to constitute the risk of electric
shock or death.
This symbol, wherever used, alerts you to
important operating and maintenance instructions.
Please read.
Protective Ground Terminal
AC mains (Alternating Current)
Hazardous Live Terminal
ON: Denotes the product is turned on.
OFF: Denotes the product is turned off.
The apparatus shall be connected to a mains
socket outlet with a protective earthing
connection.
The mains plug or an appliance coupler is used
as the disconnect device, the disconnect device
shall remain readily operable.
CAUTION
Describes precautions that should be observed to
prevent damage to the product.
Read this Manual carefully before operation.
Keep this Manual in a safe place.
Be aware of all warnings reported
with this symbol.
Keep this Equipment away from water and
moisture.
Clean it only with dry cloth. Do not use
solvent or other chemicals.
Do not damp or cover any cooling opening.
Install the equipment only in accordance with
the Manufacturer's instructions.
Power Cords are designed for your safety. Do
not remove Ground connections! If the plug
does not fit your AC outlet, seek advice from
a qualified electrician. Protect the power
cord and plug from any physical stress to
avoid risk of electric shock. Do not place
heavy objects on the power cord. This could
cause electric shock or fire.
Unplug this equipment when unused for long
periods of time or during a storm.
Refer all service to qualified service personnel
only. Do not perform any servicing other than
those instructions contained within the
User's Manual.
To prevent fire and damage to the product,
use only the recommended fuse type as
indicated in this manual. Do not short-circuit
the fuse holder. Before replacing the fuse,
make sure that the product is OFF and
disconnected from the AC outlet.

IN THIS MANUAL:
1. INTRODUCTION................................................................................1
2. FEATURES.......................................................................................1
3. QUICK START..................................................................................4
4. CONTROL ELEMENTS......................................................................5
5. INSTALLATION & CONNECTION......................................................12
6. PRESET LIST.................................................................................16
7. BLOCK DIAGRAM..........................................................................17
8. TECHNICAL
9. WARRANTY..................................................................................20
SPECIFICATIONS...........................................................18
1. INTRODUCTION
Thank you for purchasing the PBM8 8 channel powered mixer with 24-bit
digital multi-effect built-in. It is just one of the many products that a talented,
multinational Team of Audio Engineers and Musicians have developed with their great
passion for music. Your PBM8 is a remarkable compact powered mixer that doesn't
find many equals in the market today. With 6 microphone and 2 stereo MIC/Line-level
inputs for serious live performances, your PBM8 also includes a 24 Bit digital
multi-effect with 16 Factory Presets and 16 variations for every preset, for a total
of 256 different digital effects. There is a three bands EQ on all input channels and
separate Master EQ for Main Mix and Monitor Outputs. Use it for small Gigs, for
Church applications and for Conference.
LT O
LT O
Enjoy your PBM8 and make sure to read this Manual carefully before operation!
1
2. FEATURES
2 Stereo input channels with balanced TRS jacks
Ultra-low noise discrete MIC preamps with +48V phantom power
Extremely high headroom offering more dynamic range
Each input channel with -20 dB PAD, PAN and level control
3-band equalizer on input channels
2 AUX sends for built-in or external effects, on-stage monitor mix, or
headphone mixing
Built-in feedback terminator
6 MIC/Line input channels with gold plated XLR and balanced Line inputs
256 position multi-effect
2-track recording IN/OUT (PHONO)
Headphone output
Stereo Line-level output
2 250 watt RMS amplifiers (For PBM8.250 MKII)
9-band graphic EQ for MAIN/MONITOR
2 500 watt RMS amplifiers (For PBM8.500 MKII)
Output connector: 6.3 jack+4way-speakon

SPOTLIGHT
2
PMB8.250 MKII
PMB8.500 MKII
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP
TO MAIN
DSP
TO MON
PRESETS
DSP
PRESETS:
VARIATIONS
+10dB
+10dB+10dB +10dB +10dB +10dB +10dB +10dB +10dB +10dB
+10dB
CLIP
MUTE
DSP
MUTE
12
3
4
5
6
7
8
12
3
4
5
6
7
8
9
10
11
12
13
14
15
16
9
10
11
12
13
14
15
16
-
8
---------
88
8
8
8
8
8
8
8
8
0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0
dB
14. REVERB + DELAY
16. REVERB + CHORUS
15. FLANGERREVERB +
5. LARGE ROOM
13. CHORUS
12. FLANGER
11. STEREO DELAY
10. MONO DELAY
9. SPRING REVERB
8. TAPE REVERB
7. PLATE
6. SMALL ROOM
4. SMALL HALL
3. LARGE HALL
2. VOCAL 2
1. VOCAL 1
50
50
100
100
250
250
500
500
1K
1K
2K5
2K5
5K
5K
8K
8K
16K
16K
LEVEL
LEVEL
MONITOR
MAIN
+10dB
+10dB
-
-
8
8
0
dB
0
dB
FEEDBACK
TERMINATOR
FEEDBACK
TERMINATOR
HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH
MID MID MID MID MID MID MID MID
LOW LOW LOW LOW LOW LOW LOW LOW
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
LEVEL
PAN PA N PAN PA N PAN PA N PAN PAN
+15dB +15dB +15dB +15dB +15dB +15dB +15dB +15dB
+15dB +15dB +15dB +15dB +15dB +15dB +15dB +15dB
12KHz 12KHz 12KHz 12KHz 12KHz 12KHz 12KHz 12KHz
2.5KHz 2.5KHz 2.5KHz 2.5KHz 2.5KHz 2.5KHz 2.5KHz 2.5KHz
80Hz80Hz 80Hz 80Hz 80Hz 80Hz 80Hz 80Hz 80Hz
+15dB+15dB +15dB +15dB +15dB +15dB +15dB +15dB +15dB
+10dB+10dB +10dB +10dB +10dB +10dB +10dB +10dB +10dB
+10dB+10dB +10dB +10dB +10dB +10dB +10dB +10dB +10dB
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
OPERATING
RightRight Right Right Right Right Right Right Right
-15dB -15dB -15dB -15dB -15dB -15dB -15dB -15dB
-15dB -15dB -15dB -15dB -15dB -15dB -15dB -15dB
-15dB-15dB -15dB -15dB -15dB -15dB -15dB -15dB -15dB
---------
88
8
8
8
8
8
8
8
---------
88
8
8
8
8
8
8
8
LeftLeft Left Left Left Left Left Left Left
0dB0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0dB0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0dB0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0
dB
0
dB 0 dB 0 dB 0 dB 0 dB 0 dB 0 dB 0 dB
MIC IN (bal.)
LTO
R
LEVELLEVELLEVELLEVELLEVELLEVELLEVEL
CH 1 CH 2 CH 3 CH 4 CH 5 CH 6
CH 9-10
CH 7-8
30
30
10
10
0
0
10
10
0
9
9
15
15
0
9
9
15
15
0
9
9
15
15
0
9
9
15
15
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
-
AMPLIFIER
MODE
PHANTOM
48V
MAIN
+
MAIN
OFF MAIN
+
MONITOR
BRIDGEON
AUX2
OUT
STEREO
RTN
FOOT
SW.
MAIN OUTMONITOR OUTTAPE
TAPE TO
CH9-10 MAIN
RIGHT
LEFT
IN OUT
LEFT RIGHT
HEADPHONE
OUT
LINE IN
(bal.)
MICIN(bal.) MICIN(bal.) MICIN(bal.) MICIN(bal.) MICIN(bal.)
MICIN(bal.) MICIN(bal.) MICIN(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
L
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N
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P
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LINE IN
(bal.) (MONO) (MONO)
R
L
R
L
PBM8.250
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP
TO MAIN
DSP
TO MON
PRESETS
DSP
PRESETS:
VARIATIONS
+10dB
+10dB+10dB +10dB +10dB +10dB +10dB +10dB +10dB +10dB
+10dB
CLIP
MUTE
DSP
MUTE
12
3
4
5
6
7
8
12
3
4
5
6
7
8
9
10
11
12
13
14
15
16
9
10
11
12
13
14
15
16
-
8
---------
88
8
8
8
8
8
8
8
8
0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0
dB
14. REVERB + DELAY
16. REVERB + CHORUS
15. FLANGERREVERB +
5. LARGE ROOM
13. CHORUS
12. FLANGER
11. STEREO DELAY
10. MONO DELAY
9. SPRING REVERB
8. TAPE REVERB
7. PLATE
6. SMALL ROOM
4. SMALL HALL
3. LARGE HALL
2. VOCAL 2
1. VOCAL 1
50
50
100
100
250
250
500
500
1K
1K
2K5
2K5
5K
5K
8K
8K
16K
16K
LEVEL
LEVEL
MONITOR
MAIN
+10dB
+10dB
-
-
8
8
0
dB
0
dB
FEEDBACK
TERMINATOR
FEEDBACK
TERMINATOR
HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH
MID MID MID MID MID MID MID MID
LOW LOW LOW LOW LOW LOW LOW LOW
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
LEVEL
PAN PAN PAN PAN PAN PAN PAN PAN
+15dB +15dB +15dB +15dB +15dB +15dB +15dB +15dB
+15dB +15dB +15dB +15dB +15dB +15dB +15dB +15dB
12KHz 12KHz 12KHz 12KHz 12KHz 12KHz 12KHz 12KHz
2.5KHz 2.5KHz 2.5KHz 2.5KHz 2.5KHz 2.5KHz 2.5KHz 2.5KHz
80Hz80Hz 80Hz 80Hz 80Hz 80Hz 80Hz 80Hz 80Hz
+15dB+15dB +15dB +15dB +15dB +15dB +15dB +15dB +15dB
+10dB+10dB +10dB +10dB +10dB +10dB +10dB +10dB +10dB
+10dB+10dB +10dB +10dB +10dB +10dB +10dB +10dB +10dB
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
OPERATING
RightRight Right Right Right Right Right Right Right
-15dB -15dB -15dB -15dB -15dB -15dB -15dB -15dB
-15dB -15dB -15dB -15dB -15dB -15dB -15dB -15dB
-15dB-15dB -15dB -15dB -15dB -15dB -15dB -15dB -15dB
---------
88
8
8
8
8
8
8
8
---------
88
8
8
8
8
8
8
8
LeftLeft Left Left Left Left Left Left Left
0dB0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0dB0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0dB0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0
dB
0
dB 0 dB 0 dB 0 dB 0 dB 0 dB 0 dB 0 dB
MIC IN (bal.)
LTO
R
LEVELLEVELLEVELLEVELLEVELLEVELLEVEL
CH 1 CH 2 CH 3 CH 4 CH 5 CH 6
CH 9-10
CH 7-8
30
30
10
10
0
0
10
10
0
9
9
15
15
0
9
9
15
15
0
9
9
15
15
0
9
9
15
15
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
-
AMPLIFIER
MODE
PHANTOM
48V
MAIN
+
MAIN
OFF MAIN
+
MONITOR
BRIDGEON
AUX2
OUT
STEREO
RTN
FOOT
SW.
MAIN OUTMONITOR OUTTA PE
TAPE TO
CH9-10 MAIN
RIGHT
LEFT
IN OUT
LEFT RIGHT
HEADPHONE
OUT
LINE IN
(bal.)
MICIN(bal.) MICIN(bal.) MICIN(bal.) MICIN(bal.) MICIN(bal.)
MIC IN (bal.) MICIN(bal.) MICIN(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
L
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A
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LINE IN
(bal.) (MONO) (MONO)
R
L
R
L
PBM8.500

ThisisthefastestwaytogetsomethingoutfromyourPBM8,ifyouhaveakeyboard
and a microphone.
a. Plug the microphone into Channel 1 MIC IN.
b. Turn down AUX and LEVEL controls on the input channel.
c. Turn down MONITOR and MAIN master controls.
d. Put the EQ controls on center position.
e. Connect 2 passive cabinets to the rear speaker cabinets or 2 active cabinets to
the front MAIN OUT connectors.
f. Turn on your PBM8.
g. Sing or speak into the microphone with normal volume and adjust the channel
LEVEL control of half.
h.Ifyoulike,youcanaddsomeequalizationatthisstage.
i. Turn up the MAIN LEVEL control until you reach the desired volume. The +10 LED
on the Master LED meter should flash only occasionally, otherwise you will hear the
distortion. If this LED is not active and you still hear distortion, please turn down a
little the input LEVEL control or reduce the output level of your source instrument.
j. Connect your stereo keyboard into channel 7/8 and repeat the sequence.
Here you are. It is your first gig with your PBM8.
3
3. QUICK START

HOOK
UP
SMALL CLUB
4
COMPUTER SET-UP DIAGRAM
HOOK
UP
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP
TO MAIN
DSP
TO MON
PRESETS
DSP
PRESETS:
VARIATIONS
+10dB
+10dB+10dB +10dB +10dB +10dB +10dB +10dB +10dB +10dB
+10dB
CLIP
MUTE
DSP
MUTE
12
3
4
5
6
7
8
12
3
4
5
6
7
8
9
10
11
12
13
14
15
16
9
10
11
12
13
14
15
16
-
8
---------
88
8
8
8
8
8
8
8
8
0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0
dB
14.REVERB + DELAY
16.REVERB + CHORUS
15. FLANGERREVERB+
5.LARGE ROOM
13.CHORUS
12.FLANGER
11.STEREO DELAY
10.MONO DELAY
9.SPRING REVERB
8.TAPE REVERB
7.PLATE
6.SMALL ROOM
4.SMALL HALL
3.LARGE HALL
2.VOCAL 2
1.VOCAL 1
50
50
100
100
250
250
500
500
1K
1K
2K5
2K5
5K
5K
8K
8K
16K
16K
LEVEL
LEVEL
MONITOR
MAIN
+10dB
+10dB
-
-
8
8
0
dB
0
dB
FEEDBACK
TERMINATOR
FEEDBACK
TERMINATOR
HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH
MID MID MID MID MID MID MID MID
LOW LOW LOW LOW LOW LOW LOW LOW
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
LEVEL
PAN PAN PAN PAN PAN PAN PAN PAN
+15dB +15dB +15dB +15dB +15dB +15dB +15dB +15dB
+15dB +15dB +15dB +15dB +15dB +15dB +15dB +15dB
12KHz 12KHz 12KHz 12KHz 12KHz 12KHz 12KHz 12KHz
2.5KHz 2.5KHz 2.5KHz 2.5KHz 2.5KHz 2.5KHz 2.5KHz 2.5KHz
80Hz80Hz 80Hz 80Hz 80Hz 80Hz 80Hz 80Hz 80Hz
+15dB+15dB +15dB +15dB +15dB +15dB +15dB +15dB +15dB
+10dB+10dB +10dB +10dB +10dB +10dB +10dB +10dB +10dB
+10dB+10dB +10dB +10dB +10dB +10dB +10dB +10dB +10dB
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
OPERATING
RightRight Right Right Right Right Right Right Right
-15dB -15dB -15dB -15dB -15dB -15dB -15dB -15dB
-15dB -15dB -15dB -15dB -15dB -15dB -15dB -15dB
-15dB-15dB -15dB -15dB -15dB -15dB -15dB -15dB -15dB
---------
88
8
8
8
8
8
8
8
---------
88
8
8
8
8
8
8
8
LeftLeft Left Left Left Left Left Left Left
0dB0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0dB0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0dB0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0
dB
0
dB 0 dB 0 dB 0 dB 0 dB 0 dB 0 dB 0 dB
MIC IN (bal.)
LTO
R
LEVELLEVELLEVELLEVELLEVELLEVELLEVEL
CH 1 CH 2 CH 3 CH 4 CH 5 CH 6
CH 9-10
CH 7-8
30
30
10
10
0
0
10
10
0
9
9
15
15
0
9
9
15
15
0
9
9
15
15
0
9
9
15
15
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
-
AMPLIFIER
MODE
PHANTOM
48V
MAIN
+
MAIN
OFF MAIN
+
MONITOR
BRIDGEON
AUX2
OUT
STEREO
RTN
FOOT
SW.
MAIN OUTMONITOR OUTTAPE
TAPE TO
CH9-10 MAIN
RIGHT
LEFT
IN OUT
LEFT RIGHT
HEADPHONE
OUT
LINE IN
(bal.)
MICIN(bal.) MICIN(bal.) MICIN(bal.) MICIN(bal.) MICIN(bal.)
MICIN(bal.) MICIN(bal.) MICIN(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
L
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E
P
R
E
A
M
P
LINE IN
(bal.) (MONO) (MONO)
R
L
R
L
PBM8.250
MIC1 MIC2 MIC3
CD PLAYER
STAGE MONITORS
MAIN SPEAKERS
D/I BOX D/I BOX
KEYBOARD
WIRELESS MICROPHONE
GUITAR BASS GUITAR
DRUM MACHINE
POWER AMPLIFIER
EQUALIZER
ADDITIONAL SPEAKERS
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP/FX
AUX2
POST
DSP
TO MAIN
DSP
TO MON
PRESETS
DSP
PRESETS:
VARIATIONS
+10dB
+10dB+10dB +10dB +10dB +10dB +10dB +10dB +10dB +10dB
+10dB
CLIP
MUTE
DSP
MUTE
12
3
4
5
6
7
8
12
3
4
5
6
7
8
9
10
11
12
13
14
15
16
9
10
11
12
13
14
15
16
-
8
---------
88
8
8
8
8
8
8
8
8
0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0
dB
14.REVERB + DELAY
16.REVERB + CHORUS
15. FLANGERREVERB+
5.LARGE ROOM
13.CHORUS
12.FLANGER
11.STEREO DELAY
10.MONO DELAY
9.SPRING REVERB
8.TAPE REVERB
7.PLATE
6.SMALL ROOM
4.SMALL HALL
3.LARGE HALL
2.VOCAL 2
1.VOCAL 1
50
50
100
100
250
250
500
500
1K
1K
2K5
2K5
5K
5K
8K
8K
16K
16K
LEVEL
LEVEL
MONITOR
MAIN
+10dB
+10dB
-
-
8
8
0
dB
0
dB
FEEDBACK
TERMINATOR
FEEDBACK
TERMINATOR
HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH
MID MID MID MID MID MID MID MID
LOW LOW LOW LOW LOW LOW LOW LOW
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
MON
AUX1
PRE
LEVEL
PAN PAN PAN PAN PAN PAN PAN PAN
+15dB +15dB +15dB +15dB +15dB +15dB +15dB +15dB
+15dB +15dB +15dB +15dB +15dB +15dB +15dB +15dB
12KHz 12KHz 12KHz 12KHz 12KHz 12KHz 12KHz 12KHz
2.5KHz 2.5KHz 2.5KHz 2.5KHz 2.5KHz 2.5KHz 2.5KHz 2.5KHz
80Hz80Hz 80Hz 80Hz 80Hz 80Hz 80Hz 80Hz 80Hz
+15dB+15dB +15dB +15dB +15dB +15dB +15dB +15dB +15dB
+10dB+10dB +10dB +10dB +10dB +10dB +10dB +10dB +10dB
+10dB+10dB +10dB +10dB +10dB +10dB +10dB +10dB +10dB
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
OPERATING
RightRight Right Right Right Right Right Right Right
-15dB -15dB -15dB -15dB -15dB -15dB -15dB -15dB
-15dB -15dB -15dB -15dB -15dB -15dB -15dB -15dB
-15dB-15dB -15dB -15dB -15dB -15dB -15dB -15dB -15dB
---------
88
8
8
8
8
8
8
8
---------
88
8
8
8
8
8
8
8
LeftLeft Left Left Left Left Left Left Left
0dB0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0dB0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0dB0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB
0
dB
0
dB 0 dB 0 dB 0 dB 0 dB 0 dB 0 dB 0 dB
MIC IN (bal.)
LTO
R
LEVELLEVELLEVELLEVELLEVELLEVELLEVEL
CH 1 CH 2 CH 3 CH 4 CH 5 CH 6
CH 9-10
CH 7-8
30
30
10
10
0
0
10
10
0
9
9
15
15
0
9
9
15
15
0
9
9
15
15
0
9
9
15
15
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
-
AMPLIFIER
MODE
PHANTOM
48V
MAIN
+
MAIN
OFF MAIN
+
MONITOR
BRIDGEON
AUX2
OUT
STEREO
RTN
FOOT
SW.
MAIN OUTMONITOR OUTTAPE
TAPE TO
CH9-10 MAIN
RIGHT
LEFT
IN OUT
LEFT RIGHT
HEADPHONE
OUT
LINE IN
(bal.)
MICIN(bal.) MICIN(bal.) MICIN(bal.) MICIN(bal.) MICIN(bal.)
MICIN(bal.) MICIN(bal.) MICIN(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
L
O
W
N
O
I
S
E
P
R
E
A
M
P
L
O
W
N
O
I
S
E
P
R
E
A
M
P
L
O
W
N
O
I
S
E
P
R
E
A
M
P
L
O
W
N
O
I
S
E
P
R
E
A
M
P
L
O
W
N
O
I
S
E
P
R
E
A
M
P
L
O
W
N
O
I
S
E
P
R
E
A
M
P
L
O
W
N
O
I
S
E
P
R
E
A
M
P
L
O
W
N
O
I
S
E
P
R
E
A
M
P
LINE IN
(bal.) (MONO) (MONO)
R
L
R
L
PBM8.250
MIC1 MIC2 MIC3
CD PLAYER
STAGE MONITORS
MAIN SPEAKERS
D/I BOX D/I BOX
KEYBOARD
WIRELESS MICROPHONE
GUITAR BASS GUITAR
DRUM MACHINE
POWER
ON
OFF
MAC2.4
StereoPowerAmplifier
LTO
R
CLIP
SIG
PROT
POWER
CH1 CH2

5
3. CONTROL ELEMENTS
SPOTLIGHT
4. CONTROL ELEMENTS
1MIC/LINEMONOINPUT(1to6)
Your PBM8 is equipped with 6 low-noise microphone
preamplifiers with optional phantom power, 50 dB of
Gainandover90dBofS/Nratio.Youcanconnect
almost any type of microphone. Dynamic microphones
do not need phantom power. Use phantom power only
with condenser microphones but make sure that the
phantom power button is disengaged before connecting
the microphone. Phantom power will not damage your
dynamic microphones but it may damage tube or ribbon
microphones. So make sure to read the microphone
instructions manual before engaging phantom power.
Use switch (19) to activate/deactivate phantom power.
These 6 channels are also equipped with 1/4" TRS
balanced/unbalanced LINE-IN plugs to connect line-level
instruments such as keyboards, drum machines and
effect devices.
Never try to connect a line-level signal to the
XLR MIC input when the phantom power is engaged,
or you may seriously damage your equipment.
NOTE:
2 MIC/LINE STEREO LINE INPUTS
These are channels 7/8 and 9/10. They are organised in
stereo pair and provided with XLR balanced socket and
1/4" TRS phone sockets. If you connect only the left jack,
the input will operate in mono mode, that is the mono
signal will appear on both input channels. You can use
these inputs with a stereo keyboard, drum machine, etc.
3 LEVEL CONTROL
This control is used to adjust the overall level of respective
channel. The adjustable range goes from to +10 dB.
This is the PANORAMA control, or balance control. You
can adjust the stereo image of the signal via this control.
Keep this control in center position and your signal will
be positioned in the middle of stage. Turn this control
fully counter clockwise and the signal will be present only
on the left speaker and vice-versa. Of course a large
number of intermediate positions are available.
4PAN
1
10
9
8
7
6
5
4
3
2
DSP/FX
AUX2
POST
+10dB+10dB
--
88
0dB
HIGH
MID
LOW
MON
AUX1
PRE
PAN
+15dB+15dB
+15dB
12KHz
2.5KHz
80Hz80Hz
+15dB+15dB
+10dB+10dB
+10dB+10dB
-20 dB
PAD
RightRight
-15dB-15dB
-15dB-15dB
-15dB-15dB
--
88
--
88
LeftLeft
0dB0dB
0dB0dB
0dB
HIGH
MID
LOW
+15dB
12KHz
2.5KHz
0dB
0dB0dB
0
dB
0
dB
LEVEL
MIC IN (bal.) MIC IN (bal.)
CH 6 CH 7-8
L
O
W
N
O
I
S
E
P
R
E
A
M
P
L
O
W
N
O
I
S
E
P
R
E
A
M
P
1
2
3
12
3
LINE IN
(bal.) (MONO)
R
L

3. CONTROL ELEMENTS
SPOTLIGHT
If you turn this control up, you will boost all the frequencies above 12kHz ( shelving
filter ). You will add transparency to vocals and guitar and also make cymbals
crispier. Turn the control down to cut all frequencies above 12kHz. In such way
you can reduce sibilances of human voice or reduce the hiss of a Tape player.
The AUX2 control is configured as POST-FADER, so the audio signal will be affected
by channel LEVEL control and sent to the resident digital multi-effect. Via the AUX2
OUT jack, the AUX2 signal can be sent to an external effects device, and in such
case the resident digital multi-effects will be automatically disconnected.
Your PBM8 has two auxiliary sends which can be used for sending signals to
external or internal effects devices or for creating a monitor mix. They are used
to adjust the level of respective channel signal sent to AUX bus, and the adjustable
range goes from - to +10 dB. The AUX1 control is configured as PRE-FADER,
which means that the signal is sent out before reaching the channel fader. It is
used to feed stage monitors in a live situation, or for a headphone mix in recording
application.
You have three EQ controls for each mono and stereo input channel each providing
+/-15dB of boost and cut. The signal will be unaffected when the controls on the
center position. You may use an external equalizer to make up a mix properly but
a master equalizer will not have effect on a single channel and you may overload
the signal easily. Individual EQ will give you a much better control on single tracks.
4. CONTROL ELEMENTS
EQUALIZATION
This is a peaking filter and it will boost/cuts frequencies with their center at
2.5kHz. This control will affect especially upper male and lower female vocal
ranges and also the harmonics of most musical instruments.
If you turn this control up you will boost all frequencies below 80Hz. You will
givemorepunchtobassdrumsandbassguitar;andyouwillmakethemale
vocalistmore"macho".Turnitdown,andyouwillcutallthefrequenciesbelow
80Hz. In this way you can avoid low-frequency vibrations and resonance thus
preserving the life of your woofers.
6
Pressing this button will attenuate the input signal by 20dB. In such way you
can produce increased headroom and reduce the risk of distortion because of
level peaks at input level when the input signal is quite hot.
10-20dBPAD
6 MON/AUX1
9LOW
8MID
7HI
5 DSP/FX

7
MASTER SECTION
Your PBM8 is equipped with two graphic EQs with 9 adjustable bands each; one is
for the MAIN MIX and the other for the MONITOR MIX. Via the faders, you can
boost or cut the selected frequency by +/-15 dB at the indicated frequencies.
When all faders are at the center position, the equalizer will do nothing.
11 STEREO GRAPHIC EQ
Pressing this button the feedback detection function will be activated in the
monitor signal path. Feedback will be identified at a certain frequency when
the correspondent fader LED lights up. Feedback will produce an unpleasant
speaker "howling" or "whistling". In this case, in order to eliminate feedback,
you need to turn down the corresponding fader until feedback disappears.
12 FEEDBACK TERMINATOR Button (MONITOR MIX)
This LED display will show you the monitor output level. Make sure that the
+10 LED only lights up occasionally. The optimal level is when the -10 and
0 LED light up. If only the -30 LED lights up or even doesn't come to life your
S/N ratio will be degraded.
13 MONITOR LEVEL LED DISPLAY
By pressing this button, the feedback detection function will be activated in the
Main Mix signal path. Feedback will be identified at a certain frequency when
the correspondent fader LED will light up. Feedback will produce an unpleasant
speaker "howling" or "whistling". In this case, in order to eliminate feedback, you
need to turn down the corresponding fader until feedback disappears.
14 FEEDBACK TERMINATOR Button (MAIN MIX)
15
12
18
13
14
16
17
11
3. CONTROL ELEMENTS
SPOTLIGHT
4. CONTROL ELEMENTS
50
50
100
100
250
250
500
500
1K
1K
2K5
2K5
5K
5K
8K
8K
16K
16K
LEVEL
LEVEL
MONITOR
MAIN
+10dB
+10dB
-
-
8
8
0
dB
0
dB
FEEDBACK
TERMINATOR
FEEDBACK
TERMINATOR
OPERATING
30
30
10
10
0
0
10
10
0
9
9
15
15
0
9
9
15
15
0
9
9
15
15
0
9
9
15
15

This switch provides three modes: MAIN/MAIN, MAIN/MONITOR and BRIDGE.
Select any one of these modes to route the signals to the corresponding jacks
according to the speaker connection at speaker jacks on the rear panel. You
will find more details about the Amplifier Mode switch later on in this Manual.
20 AMPLIFIER MODE SWITCH
Activating this switch, you will apply +48V phantom power only to the 8 XLR
microphone inputs and only to the XLR MIC sockets. Never plug in a microphone
when phantom power is already on. Before turning phantom power on, make
sure that all faders are all the way down. In this way, you will protect your
stage monitors and main loudspeakers.
19 PHANTOM 48V SWITCH
The LED indicates when the power
is switched on in your PBM8.
18 OPERATING LED DISPLAY
This LED display will show you the Main Mix output level. Make sure that the
+10 LED only lights up occasionally. The optimal level is when the -10 and 0
LED light up. If only the -30 LED lights up or even doesn't come to life your
S/N ratio will be degraded.
17 MAIN MIX LEVEL LED DISPLAY
This control is used to adjust the overall volume of the main mix output.
16 MAIN MIX LEVEL CONTROL
This control is used to adjust the level of the monitor output.
15 MONITOR LEVEL CONTROL
3. CONTROL ELEMENTS
SPOTLIGHT
4. CONTROL ELEMENTS
AUX2
OUT
STEREO
RTN
MAIN OUTMONITOR OUTTAPE
TAPE TO
CH9-10 MAIN
RIGHT
LEFT
IN OUT
LEFT RIGHT
HEADPHONE
OUT
8
MASTER SECTION INPUT AND OUTPUT JACKS
24 26
20
19
25 27
21 22
2328

3. CONTROL ELEMENTS
SPOTLIGHT
4. CONTROL ELEMENTS
9
Use this balanced MONITOR jack to connect the input of an external amplifier
or active monitor speaker.
21 MONITOR OUT JACK
This is a stereo phone type output jack. It is used to send out the Main Mix
signal to a pair of headphones.
These jacks are used to output the Main Mix signal to an external amplifier or
active speaker.
22 MAIN OUT JACKS
23 HEADPHONE OUT JACK
The phone jack is used to output the line level signal of the AUX2 post fader
bus. You can use it to feed the inputs of a stereo multi-effects (you will need
a Y-type cable ).
24 AUX2 OUT JACK
Use this stereo phone jack to return the stereo signal of an effect unit into the
Main Mix. You can also use it as the extra auxiliary input.
25 STEREO RETURN JACK
If you position this switch to the left, you will route the signal fed into the TAPE
IN sockets into CH9~10 path, and the signal will be affected by channel level
control, channel EQ, DSP send, and MAIN level control, while positioning this
switch to the right will route the TAPE IN signal into Main Mix bus. In this case,
signal will be affected only by Main level control.
26 TAPE TO SELECT SWITCH
Your PBM8 features dual RCA jacks for TAPE IN (left and right). Typically, these
connectors are used to feed into the mixer the stereo signal from a CD Player,
Tape or DAT Player, iPod, MP3 and so on. It is useful to use these inputs this
wayifyoustoptheGIGforacoupleofbeersormore.
27 TAPE IN CONNECTORS
Your PBM8 also includes dual RCA jacks for stereo out (left and right). Via
these jacks, you can route the Main Mix signal into a tape recorder or DAT for
recording your session.
28 TAPE OUT

DSP
TO MON
PRESETS
DSP
PRESETS:
VARIATIONS
+10dB
+10dB
CLIP
MUTE
DSP
MUTE
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
-
8
-
8
0
dB
FOOT
SW.
14. REVERB + DELAY
16. REVERB + CHORUS
15. FLANGERREVERB +
5. LARGE ROOM
13. CHORUS
12. FLANGER
11. STEREO DELAY
10. MONO DELAY
9. SPRING REVERB
8. TAPE REVERB
7. PLATE
6. SMALL ROOM
4. SMALL HALL
3. LARGE HALL
2. VOCAL 2
1. VOCAL 1
DSP
TO MAIN
This 1/4" phone jack can be used to connect an external optional footswitch to
turn on/off the onboard digital multi-effect.
35 DSP FOOTSWITCH Socket
This button is used to activate/deactivate the digital
multi-effect. Alternatively, you can also use the DSP
FOOTSWITCH for a faster operation.
This knob will select one of the 16 Factory Presets.
There is a powerful 24-bit/256 preset digital multi-effects included in your PBM8.
Effects include reverbs, chorus, flanger, delay and combinations of the above.
For each of the 16 Factory Presets you can apply
up to 16 variations, so in total your PBM8 offers
256 different presets. If you want to know which
Parameter is modified by this control, please look
at the following chart.
32 VARIATIONS Control
This LED will flash when the signal input into the
digital multi-effect is too strong. When the digital
effect module is muted by the (30) button the LED
also lights up.
DSP SECTION
31 PEAK LED
30 DSP MUTE Button
29 PRESETS Control
This control is used to control the volume of the
processed signal sent to Monitor Mix, which can
be varied from - to +10 dB.
33DSPTOMON
This control is used to control the volume of the
processed signal sent to Main Mix bus, which can
bevariedfrom- to+10dB.
34DSPTOMAIN
3. CONTROL ELEMENTS
SPOTLIGHT
4. CONTROL ELEMENTS
10
29
31
30
32
33
34
35

STER EO MODE: 50 0 W @ 4 OHM
300 W @ 8 OHM
(4 OHM MIN. LOAD)
BRIDGE MODE: 1000 W @ 8 OHM
(8 OHM MIN. LOAD)
CLASS 2 W IRING MAY BE USED
OUTPUT 2
1+ 1-
POS NEG
LEFT/MONO MAIN
OUTPUT 2
OUTPUT 1
OUTPUT 2
2+ 2-
POS NEG
RIGHT/ MONITOR
OUTPUT 1
1+ 1-
POS NEG
BRIDGE
2+ 1+
POS NEG
BRIDGE MODE
POW ER
FUSE
250V T3.15AH
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION:
REPLACE WITH THE SAME TYPE FUSE AND RATING
DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE
WARNING: SHOCK HAZARD - DO NOT OPEN
AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR
SERIAL
MODEL
ST ER EO MOD E: 25 0 W @ 4 OH M
190 W @ 8 OHM
(4 OH M MIN. LOAD)
BRIDGE MODE: 500 W @ 8 OHM
(8 OH M MIN. LOAD)
CLASS 2 W IRING MAY BE USED
LTO
R
Apparaten skall anslutas
till jordat uttag nar den
ansluts till ett natverk
AC INPUT
100 VAC~60HZ
120 VAC~60HZ
230 VAC~50HZ
240 VAC~50HZ
Useonlywitha250Vfuse
POW ERED MIXER
MODEL: PBM8.250 MK
3. CONTROL ELEMENTS
SPOTLIGHT
4. CONTROL ELEMENTS
11
STER EO MODE: 250 W @ 4 OHM
190 W @ 8 OHM
(4 OHM MIN. LOAD)
BRIDGE MODE: 500 W @ 8 OHM
(8 OHM MIN. LOAD)
CLASS 2 W IRING MAY BE USED
Use it to connect your PBM8 to the main AC with the supplied AC cord. Please
check the voltage available in your country and how the voltage for your PBM8
is configured before attempting to connect your PBM8 to the main AC.
This switch is used to turn the main power ON and OFF.
36 POWER ON/OFF Switch
37 AC Inlet with FUSE Holder
REAR PANEL
These jacks are used to connect speakers. They are configured with 4-way
speakon connectors and 1/4" phone jacks. You can determine the signal that is
output to these jacks according to the setting of the AMPLIFIER MODE select
switch,aswewilldescribeinamoment.
38 SPEAKERS Jacks
: In order to avoid damage to the built-in amplifier, please pay attention
to the allowed impedance of the speaker. Very low load impedances may damage
The amplifier. Look at this plate on your PBM8 for reference.
Note
36
37
38
PBM8.250 MKII PBM8.500 MKII

12
Ok, you have got to this point and you are now in the position to successfully operate
your PBM8. However, we advise you to read carefully the following section to be the
real master of your own mix. Not paying attention enough to the input signal level, to
the routing of the signal and the assignment of the signal will result in unwanted
distortion, a corrupted signal or no sound at all. So you should follow this procedure
for every single channel:
1. Turn down all Input and output gain controls.
2. Connect phantom powered microphones before switching on the +48 V phantom
power switch.
3. Set the output level of your PBM8 or the connected power amplifier at no more
than 75%.
4.Now,settheMONITORlevelatnomorethan50%.Inthiswayyouwillbeableto
hear later what you are doing connecting a pair of headphones or a pair of powered
studio monitor speakers.
5. Position EQ controls on middle position.
6. Position panoramic (PAN) control on center position.
7. Increase the input gain properly for maintaining the good headroom and ideal dynamic
range.
8. Depending on the actual application, turn slowly the input and output level controls
for obtaining the maximum gain before distortion.
9. Now repeat the same sequence for all input channels. The main LED meter could
move up into the red section. In this case you can adjust the overall output level
through the MAIN MIX control.
Strain Clamp
Sleeve Tip
Ring
Sleeve=Ground/Screen
Ring=Right Signal
Tip=Left Signal
Use for Headphone
1/4" Stereo (TRS) Jack Plug
Strain Clamp
Sleeve Tip
Sleeve=Ground/Screen
Tip=Signal
Use for Mono Line In, Mono 1/4"Jack Plugs
1/4" Mono (TS) Jack Plug
You can connect unbalanced equipment to balanced inputs and outputs. Simply follow
these schematics.
Audio Connections
5. INSTALLATION AND CONNECTION

13
3. CONTROL ELEMENTS
5. INSTALLATION AND CONNECTION
Strain Clamp
Sleeve Tip
Ring
Sleeve=Ground/Screen
Ring=Return Signal
Tip=Send Signal
Use for Insert Points
1/4" Stereo (TRS) Jack Plug
2=Hot(+)
3=Cold(-)
1=Ground/Screen
(seen from soldering side)
Use for Balanced Mic Inputs
(For unbalanced use, connect pin 1 to 3)
3-pin XLR Male Plug
2=Hot(+)
3=Cold(-)
1=Ground/Screen
3-pin XLR Line Socket
(seen from soldering side)
1
2
3
1
2
3
1+
2+
1-
2-
Speakon connector
Use for Main output
(For unbalanced use, leave pin3 unconnected)
Please use only the power connectors to make connections with other signal
source equipment for the passive speaker cabinets. The power connector has
four terminals: 1+, 1-, 2+, 2-.
MAIN SPEAKERS CONNECTION

14
MAIN + MONITOR Mode
AMPLIFIER
MODE
MAIN
+
MAIN
MAIN
+
MONITOR
BRIDGE
Use either the speakon jacks
or phone jacks
Main Speaker
Monitor Speaker
MAIN + MAIN Mode
AMPLIFIER
MODE
MAIN
+
MAIN
MAIN
+
MONITOR
BRIDGE
Use either the speakon jacks
or phone jacks
Main Speaker
Main Speaker
3. CONTROL ELEMENTS
5. INSTALLATION AND CONNECTION
And now some tips how to use the AMPLIFIER MODE switch
This is the most common application. The built-in amplifier drives two man
speaker cabinets Left and Right. The AMPLIFIER MODE is on MAIN+MAIN
position.
With the AMPLIFIER MODE in MAIN+MONITOR position, channel1 drives a
Main speaker cabinet while channel2 drives a stage monitor.
OUTPUT 2
1+ 1-
POS NEG
LEFT/ MONO MAIN
OUTPU T 2
OUTPU T 1
OUTPUT 2
2+ 2-
POS NEG
RIGHT/ MONITOR
OUTPUT 1
1+ 1-
POS NEG
BRIDGE
2+ 1+
POS NEG
BRIDGE MODE
OUTPUT 2
1+ 1-
POS NEG
LEFT/ MONO MAIN
OUTPU T 2
OUTPU T 1
OUTPUT 2
2+ 2-
POS NEG
RIGHT/ MONITOR
OUTPUT 1
1+ 1-
POS NEG
BRIDGE
2+ 1+
POS NEG
BRIDGE MODE

15
3. CONTROL ELEMENTS
5. INSTALLATION AND CONNECTION
AMPLIFIER
MODE
MAIN
+
MAIN
MAIN
+
MONITOR
BRIDGE
Bridge Mode
Main Speaker
With the AMPLIFIER MODE switch in BRIDGE position, the two power amplifiers
in your PBM8 drive together a single speaker cabinet with the sum of the power
of the 2 amps. Usually this solution is used to drive a single subwoofer and the
MAIN OUT output on the front panel are used to feed a pair of powered speakers
as mid-high units.
OUTPUT 2
1+ 1-
POS NEG
LEFT/ MONO MAIN
OUTPUT 2
OUTPUT 1
OUTPUT 2
2+ 2-
POS NEG
RIGHT/ MONITOR
OUTPUT 1
1+ 1-
POS NEG
BRIDGE
2+ 1+
POS NEG
BRIDGE MODE

16
6. PRESET LIST
Controllable Parameter
VOCAL1 Simulate a room with small delay time. Decay time
Pre-delay
Simulate a small space with slight decay timeVOCAL2
Simulate a large acoustic space of the sound.
LARGE HALL
Simulate a stage space of the sound.
SMALL HALL
Simulate a studio room with many early reflections
LARGE ROOM
Simulate a bright studio room.
SMALL ROOM
Simulate the transducers sound like classic bright
vocal plate.
PLATE
TAPE REVERB Simulate a record head and multiple playback heads
at intervals along the tape.
SPRING REVERB Simulate the analog transducers' springs lightly
stretched sound.
MONO DELAY
STEREO DELAY
FLANGER
CHORUS
REV.+DELAY
REV.+FLANGER
Reproduce the sound input on the output after a
lapse of time.
Recreate the input sound on the stereo output with
different time.
Recreate the illusion of more than one instrument
from a single instrument sound
Delay with room effect
Stereo chorus and large room reverb
Rate
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NO. Preset Description
Flanger Rate
Rev.decay time
Chorus rate
Rev.decay time
Simulate to play with another person carrying
out same the notes on the same instrument
REV.+CHORUS
Parameter Variable range
0.8~1.1s
0~79ms
Decay time
Pre-delay
0.8~2.5s
0~79ms
Decay time
Pre-delay
3.6~5.4s
23~55ms
Decay time
Pre-delay
1.0~2.9s
20~45ms
Decay time
Pre-delay
2.9~4.5s
23~55ms
Decay time
Pre-delay
0.7~2.1s
20~45ms
Decay time
Pre-delay
0.6~6.1s
10ms
Decay time
Pre-delay
1.3~5.4s
0~84ms
Decay time
Pre-delay
1.3~5.4s
0~35ms
60~650ms
0.16~2.79Hz
Period
Period
Feedback
210~400ms
37~73%
Rate 0.5~5Hz
Decay period
Rev.decay time
0.16~2.52Hz
211~375ms
1.0~2.9s
0.5~4.74Hz
1.5~2.9s
Stereo flanger and large room reverb

17
7. BLOCK DIAGRAM

18
Main Mix Section
Noise (Bus noise) Fader 0 dB, channels muted: 85dBr (ref.:+4dBu)
UNITY gain: 71 dBr (ref.:+4 dBu)
+27 dBu balanced ,
+22 dBu unbalanced, 1/4" jacks
AUX Sends max out +22 dBu
Distortion (THD & N)
Frequency response 10 Hz to 55 kHz, +/ 3 dB
0.006% at +4 dBu, 1 kHz
Gain 50 dB (MIC)
>90 dB
Electronically balanced
10 Hz to 55 kHz, +/ 3 dB
Distortion (THD & N) 0.04% at +4 dBu, 1 kHz
Gain 30 dB
Electronically balanced, discrete input configuration
6. TECHNICAL SPECIFICATIONS
8. TECHNICAL SPECIFICATION
Mono input channels
Microphone input
SNR (Signal to Noise Ratio)
Frequency response
Line input
Stereo input channels
Impedances
Line input Unbalanced
Frequency response 10 Hz to 55 kHz, +/3dB
Distortion (THD & N) 0.006% at +4 dBu, 1 kHz
Microphone input 1.4 kOhm
Channel Insert return 2.5 kOhm
All other inputs 10 kOhm or greater
Tape out 1 kOhm
All other output 120 Ohm
Equalization
DSP Section
Hi shelving +/ 15 dB @12 kHz
Mid bell +/ 15 dB @ 2.5 kHz
Low shelving +/ 15dB@80Hz
A/D and D/A converters 24 bit
DSP resolution 24 bit
Type of effects Hall, Room, Vocal & Plate REVERBS
Mono & Stereo DELAY (max DELAY TIME 650ms)
Chorus, Flanger & Reverb MODULATIONS
REVERB+DELAY, REVERB+CHORUS,
Presets 256
Controls 16-position PRESET Selector
16-position VARIATION selector
CLIP LED
MUTE SWITCH with LED indicator
REVERB+FLANGER combinations
Fader 0dB, all input channels assigned and set to
Max output
Noise (bus noise)
Power supply
Main voltage 100VAC~60Hz 230VAC~50Hz
120VAC~60Hz 240VAC~50Hz
Power Consumption
PBM8.250 MKII
Stereo mode: 250W@4ohm(EIAJ)
190W@8ohm(EIAJ)
Bridge mode: 500W@8ohm(EIAJ)
222W@4ohm(RMS) THD=1%
149W@8ohm(RMS) THD=1%
415W@8ohm(RMS) THD=1%
PBM8.500 MKII
Stereo mode: 500 W @ 4 ohm(EIAJ)
300W@8ohm(EIAJ)
Bridge mode: 1000W@8ohm(EIAJ)
400W@4ohm(RMS) THD=1%
263W@8ohm(RMS) THD=1%
738W@8ohm(RMS) THD=1%