PBM8.250/ PBM8.500 User's Manual 8-channel Stereo Powered Mixer with DSP R LTO www.altoproaudio.com Version 1.
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. SAFETY RELATED SYMBOLS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN Protective Ground 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.
PREFACE Dear customer Thank you for choosing the LTO PBM8.250/500 8-channel stereo powered mixer with DSP, which is the result of our LTO AUDIO TEAM's endeavours. For the LTO AUDIO TEAM, music and audio are more than a profession, it is a passion and an obsession! We have, in fact, been designing professional audio products for a number of years in cooperation with many of the world's major brands. The LTO line represents unparalleled analogue and digital products made by musician, for musicians.
TABLE OF CONTENTS 1. INTRODUCTION.....................................................................................................................................4 2. FEATURES..............................................................................................................................................5 3. QUICK START..........................................................................................................................................6 4. CONTROL ELEMENTS................
1. INTRODUCTION Thank you very much for expressing your confidence in LTO products by purchasing LTO PBM8.250/500 8channel stereo powered mixer with DSP. The PBM8.250/500 is professional, powerful mixer, which provides the state of the art digital amplifier technology specifically. You will get the smooth, accurate more natural and open sound from this apparatus, it is really ideal for large gigs, recording and fixed PA installations. The PBM8.
2. FEATURES The PBM8.250/500 8-channel stereo powered mixer with DSP is designed for professional application.
3. QUICK START 3.1 Please check the AC Voltage available in your country before connecting your PBM8.250/500 to the AC socket. 3.2 Be sure that the main power switch is turned off before connecting the Mixer to the AC socket. Also, you should make sure that all Input and output controls are turned down. This will avoid damages to your speakers and avoid excessive noise. 3.3 Please connect one side of the speaker cable to speakon or phone jacks of your PBM8.
8 Left 7 +10dB 8 M M M 1 MIC IN (bal.) 2 LOW NOISE P RE A LINE IN (bal.) MIC IN (bal.) 1 RE A +10dB CH 6 LEVEL MIC IN (bal.) 2 LOW NOISE P LINE IN (bal.) - MIC IN (bal.) 1 +10dB CH 5 LEVEL MIC IN (bal.) P MIC IN (bal.) P 3 P 3 2 RE A P 3 1 LOW NOISE P M P 3 2 RE A LINE IN (bal.) - M 3 1 LOW NOISE P +10dB CH 4 LEVEL 0 dB M 3 2 RE A LINE IN (bal.) - PAN +10dB AUX2 POST DSP/FX +10dB AUX1 PRE MON +15dB 80Hz LOW +15dB Right 0dB MID 2.
8 8 Left 8 +10dB 8 M M M 1 MIC IN (bal.) 2 MIC IN (bal.) 1 LOW NOISE P RE A LINE IN (bal.) CH 6 MIC IN (bal.) 2 RE A +10dB LEVEL 0 dB MIC IN (bal.) 1 LOW NOISE P LINE IN (bal.) CH 5 - Left PAN +10dB AUX2 POST DSP/FX Right 0dB +10dB AUX1 PRE MON +15dB 80Hz LOW +15dB MIC IN (bal.) P MIC IN (bal.) P 3 P 3 2 RE A P 3 1 LOW NOISE P M P 3 2 RE A +10dB LEVEL M 3 1 LOW NOISE P LINE IN (bal.) CH 4 - 0dB 0dB MID 2.
4.1 MONO/STEREO Input Channel Section Your PBM8.250/500 comprises 6 mono input channels and 2 stereo input channels, each of them including -20dB PAD, 3-band equalizer, AUX sends, PAN and LEVEL controls. The following content will detail the each part. CH 7-8 CH 6 R LINE IN (bal.) (MONO) 1 MONO Input Channels (1 ~ 6) L LOW NOISE P RE A P 2 RE A M P Note: You shall never connect an unbalanced microphone to the XLR connector if you do not want to damage both the microphone and the mixer.
5 MON (AUX1) Control Your PBM8.250/500 has two auxiliary sends which can be used for sending signals to external or internal effects device 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 +10dB. The AUX1 control is configured as PRE-FADER, which means that the signal is sent out before reaching the channel fader.
11 MONITOR LEVEL Control This control is used to adjust the level of monitor output. 12 MONITOR LEVEL LED Display This LED display is used to monitor the monitor output level.
17 PHANTOM 48V Switch It is available 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. Pushing the switch to right will apply +48V phantom power only to the 8 XLR microphone inputs.
24 TAPE TO Select Switch Pushing this switch to left will route the signal from TAPE IN to CH9~10 path, and the signal will be affected by channel level control and main level control, while to right will route the signal to main mix bus, the signal will be affected only by main level control. TAPE TO CH9-10 24 MAIN TAPE LEFT 25 2-TRACK IN Your PBM8.250/500 features dual RCA jacks for 2-track in (left and right).
32 DSP TO MAIN Control This control is used to control the volume of effect signal sent to main mix bus, which can be varied from +10dB. to 33 FOOT SW. Jack Here, you can connect an external footswitch to turn on/off the onboard effect module. It is 1/4" phone jack. 4.5 Rear Panel 34 R LTO POWERD MIXER MODEL: PBM8.
5. PRESET LIST 01. VOCAL1 No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pre-delay 84 30 0 55 10 79 45 45 25 0 45 114 40 50 45 55 Rev Time 1.00 1.00 4.50 3.60 1.20 3.60 0.8 1.50 2.40 0.90 1.50 1.00 1.00 2.10 4.50 1.70 Room Size 39 8 10 11 9 8 41 41 9 41 10 45 9 10 11 Rev.
9 10 11 12 13 14 15 16 50 50 27 27 45 45 23 23 4.00 4.00 4.00 4.00 3.60 3.60 3.60 3.60 42 42 32 32 41 41 30 30 -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 82 82 82 82 88 88 88 88 Pre-delay 45 45 23 23 40 40 20 20 40 40 20 20 40 40 20 20 Rev Time 2.90 2.90 2.90 2.90 2.10 2.10 2.10 2.10 1.50 1.50 1.50 1.50 1.00 1.00 1.00 1.00 Room Size 39 39 28 28 38 38 27 27 37 37 26 26 36 36 25 25 Hi Damp -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 -0.96 -12.
06. SMALL ROOM No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pre-delay 45 45 23 23 40 40 20 20 40 40 20 20 40 40 20 20 Rev Time 2.10 2.10 2.10 2.10 1.50 1.50 1.50 1.50 1.00 1.00 1.00 1.00 0.70 0.70 0.70 0.70 Room Size 17 17 9 9 17 17 9 9 16 16 8 8 16 16 8 8 Hi Damp -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 Pre-delay 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 Rev Time 6.10 5.40 4.50 4.00 3.60 2.90 2.40 2.10 1.70 1.50 1.30 1.20 1.00 0.80 0.
9 10 11 12 13 14 15 16 0 0 0 0 0 0 0 0 3.60 3.60 2.90 2.90 2.10 2.10 1.30 1.30 23 23 23 23 21 21 21 21 -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 92 92 92 92 100 100 100 100 Pre-delay 35 35 30 30 30 30 30 84 0 0 0 0 0 0 0 0 Rev Time 5.4 5.4 4.50 4.50 4 4 3.60 3.60 2.90 2.90 2.40 2.40 1.70 1.70 1.30 1.30 Room Size 35 35 33 33 30 30 28 28 22 22 22 22 22 22 22 22 Hi Damp -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 -0.96 -12.00 -0.96 -12.
11. STEREO DELAY No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Delay 400 375 352 326 312 300 288 277 267 258 250 241 238 230 222 214 Right Delay 200 187 176 163 156 150 144 138 133 129 125 120 119 115 111 107 Left F.B. 51 51 40 40 40 40 40 40 30 38 37 36 36 37 38 37 Right F.B. 72 72 72 72 72 72 66 66 66 73 73 73 73 74 73 73 Mod. Freq 2.79 2.52 2.33 2.25 2.10 1.99 1.75 1.61 1.34 1.22 1.00 0.80 0.65 0.54 0.42 0.16 Pitch. Depth 30 40 40 40 40 40 40 50 50 70 70 70 70 70 70 70 Left F.B.
2.33 1.99 1.70 1.35 1.00 0.50 11 12 13 14 15 16 40 40 40 40 70 70 -3(0) -3(0) -3(0) -2(0) -2(0) -2(0) 14. REVERB+DELAY No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Rev Time 2.90 2.90 2.90 2.90 2.40 2.40 2.40 2.40 2.10 2.10 1.50 1.50 1.50 1.50 1.00 1.00 Room Size 39 39 39 39 39 39 39 39 26 26 26 26 26 26 26 26 Left Delay 375 326 300 277 258 241 230 211 375 326 300 277 258 241 230 211 Right Delay 187 163 150 138 129 120 115 107 187 163 150 138 129 120 115 107 Left F.B.
16. REVERB+CHORUS No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Rev Time 2.90 2.90 2.90 2.90 2.90 2.90 2.90 2.90 1.50 1.50 1.50 1.50 1.50 1.50 1.00 1.00 Room Size 39 39 39 39 39 39 39 39 26 26 26 26 26 26 26 26 Mod. Freq. 4.74 4.12 3.67 3.02 2.63 1.99 1.35 0.50 4.74 4.12 3.67 3.02 2.63 1.99 1.35 0.50 21 Pitch. Depth 40 40 40 40 40 40 70 70 40 40 40 40 40 40 70 70 Left F.B.
6. INSTALLATION AND CONNECTION Ok, you have got to this point and you are now in the position to successfully operate your PBM8.250/500. 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.
Sleeve Ring=Return Signal Tip Ring Strain Clamp Tip=Send Signal Sleeve=Ground/Screen Use for Insert Points 1/4" Stereo (TRS) Jack Plug 2=Hot(+) 2 1 3 2 2=Hot(+) 1=Ground/Screen 1 3 3=Cold(-) 1=Ground/Screen 3=Cold(-) Use for Balanced Mic Inputs (For unbalanced use, connect pin 1 to 3) Use for Main output (For unbalanced use, leave pin 3 unconnected) 3-pin XLR Male Plug 3-pin XLR Line Socket (seen from soldering side) (seen from soldering side) 6.
Here some illustrations will give you some helpful suggestions.
6.3 Possible System Connection Mode for Live Sound Application Read through the "QUICK START" chapter and previous setting procedures , you will know how to start your system quickly and adjust the channel setting under safety conditions. Here shows the PBM8.250/500 in a live sound system. The following section explains the basic connection and operating.
7. TECHNICAL SPECIFICATION Mono input channels Microphone input Frequency response Distortion (THD & N) Gain SNR (Signal to Noise Ratio) Line input Frequency response Distortion (THD & N) Gain >90dB electronically balanced 10Hz to 55kHz, + 3dB 0.04% at + 4dBu, 1kHz 30dB Line input Frequency response Distortion (THD & N) Unbalanced 10Hz to 55kHz, + 3dB 0.006% at +4dBu, 1kHz Microphone input Channel Insert return All other inputs Tape out All other output 1.4kOhm 2.
Power supply Main voltage 100VAC ~ 60Hz 120VAC ~ 60Hz 230VAC ~ 50Hz 240VAC ~ 50Hz Power Consumption PBM8.250 Stereo mode: 250W @ 4ohm 190W @ 8ohm Bridge mode: 500W @ 8ohm PBM8.500 Stereo mode: 500W @ 4ohm 300W @ 8ohm Bridge mode: 1000W @ 8ohm PBM8.250 100 ~ 120V 210 ~ 240V 100 ~ 120V 210 ~ 240V Fuse PBM8.500 : T6.3AL : T3.15AL : T10AL : T6.3AL Physical Dimension (W D H) 550mm 220mm 310mm (8.66" 12.20" 21.65") Weight PBM8.250 (Net) : 14kg (30.86lb) (Gross) : 15kg (33.07lb) PBM8.
8. WARRANTY 1. WARRANTY REGISTRATION CARD To obtain Warranty Service, the buyer should first fill out and return the enclosed Warranty Registration Card within 10 days of the Purchase Date. All the information presented in this Warranty Registration Card gives the manufacturer a better understanding of the sales status, so as to purport a more effective and efficient after-sales warranty service.
SEKAKU ELECTRON INDUSTRY (H.K.) CO. LTD. No.1, Lane 17, Sec. 2, Han Shi West Road, Taichung, 401 TAIWAN http://www.altoproaudio.com Tel:886-4-22313737 email: alto@altoproaudio.com Fax:886-4-22346757 All rights reserved to ALTO. All features and content might be changed without prior notice. Any photocopy, translation, or reproduction of part of this manual without written permission is forbidden. Copyright c 2004 Sekaku Electron NF 01736 -1.
