User's Manual Verb 24 32 Bit Digital Effects Module R LTO www.altoproaudio.com Version 2.0 Dec.
SAFETY RELATED SYMBOLS External Connection CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN 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 Always use proper ready-made insulated mains cabling (power cord).
Do not install this product near any direct heat source. Do not block areas of ventilation. Failure to do so could result in fire. Keep product away from naked flames. IMPORTANT SAFETY INSTRUCTIONS Read these instructions Follow all instructions Keep these instructions. Do not discard. Heed all warnings. Only use attachments/accessories specified by the manufacturer. Power Cord and Plug Do not tamper with the power cord or plug. These are designed for your safety.
Preface Dear Customer, Thanks for choosing LTO Verb and thanks for choosing one of the results of AUDIO TEAM job and researches. LTO For our LTO AUDIO TEAM, music and sound are more than a job...are first of all passion and let us say...our obsession! We have been designing professional audio products for a long time in cooperation with some of the major brands in the world in the audio field.
Table of Contents 1. Introduction ........................................................................................................... 6 2. Feature List ............................................................................................................ 6 3. Front and Back Panels Description ................................................................. 6 3.1 Control Panel (Front Panel) a. Program and Variations Selections b. Analog Levels c. LED and Illuminated Power Switch 3.
5.3 Delay 5.4 Combined Effects a. Delay+Reverb b. Flanger+Reverb c. Chorus+Reverb 5.5 Effects Summary Table a. Program Chart b. Preset Value 6. Technical Specifications .............................................................................................. 28 6.1 Block Diagram 6.2 Specifications 7. Warranty ...............................................................................................................................
1. Introduction Purchasing LTO Verb, you purchased a very powerful effect processor, easy to use and contained in a very efficient half rack package. LTO Verb is divided in 16 effects algorithms and 16 variations for each of these algorithms. The variations modify the most important parameter of the current algorithm and, for some algorithm as chorus and flanger, may decide also the shape of the modulating signal (Sinusoid or Ramp).
a. Program and Variations Selections - Program Select Knob: The Program Select Knob is used to choose the program you wish to perform. - Variations Select Knob: Each program on this apparatus has one parameter which can be adjusted. Depending on the type of program selected, this knob might alter reverb decay, chorus depth, etc. b. Analog levels - Analog Input Level Potentiometer: The input level control sets the main input Gain, before the signal reaches the input bus.
c. Power Connector - Power connector: This is a plug for connecting the 9VAC power supply adaptor provided by the manufacturer. 4. Installation & Connection 4.1 Audio Connections and Power Up a. Audio Connections The connections between the Verb and the other audio devices have to be made using high quality cables so to prevent bad performances of the Verb itself. So it should be good to use low-capacitance shielded cables with a flexible internal conductor.
b. Levels Setting Proper setting of the input and output levels is crucial in order to achieve the maximum signal-to-noise ratio. It is possible to say that it is usually best to set both input and output level controls at 3/4 or 75% of full. This will decrease the possibility of overload distortion and keep the amount of background noise to a minimum.
When connecting audio cables and/or turning power on and off, make sure that all devices in your system have their volume controls turned down. The Verb has two 1/4" unbalanced inputs and two 1/4" unbalanced outputs. These input/output configuration may provide three different audio connections options: MONO. Connect an audio cable to the [LEFT] INPUT of the Verb from a mono source, and another audio cable from the [LEFT] output of the Verb to an amplification system or mixer input.
- MIXER Interfacing to a Mixing Console The Verb can accept mono or stereo sends at all system levels. The input circuitry of the Verb can easily accept professional +8/9dBu levels while having enough input and output gain to interface with the low signal levels of home recording systems.
The effect returns generally should only contain effected signal, and not have any uneffected or "DRY" signal mixed with it (since these two signals are blended together at the mixer). Therefore, it is necessary to set the mix so that only effected ("WET") signal is present at the Verb's outputs. To do this, turn the Mix control all the way to the right. Mono in - stereo out.
5. Depending on the input sensitivity of the mixer's channels or Aux Returns, the [OUTPUT] knob of the Verb should be set somewhere between "2:00" and fully clockwise ("5:00"). 6. Turn up the AUX RETURN level until desired level of effect in the mix is reached. The control in the chain that may need to be set to a low level is the Aux Return on the mixer itself. Here is where should increase or decrease the overall effect level in the mix to minimize the noise. 4.
Hall 2 - This is a warmer hall program with 77ms predelay, and adds depth and character to acoustic instruments. Hall 3 - The third program is a medium bright hall with no predelay, and can be used on rock snares and percussions. b. Rooms This algorithm try to reproduce the sound of a medium size room. It has a more dense and rich sound than the hall reverb algorithm, and this quality makes it good for rock and "disco" music.
Tremolo Parameters Adjust Rate - This control sets the amplitude modulation rate. Sin/Ramp Lfo - From 1 to 8 Ramp, From 9 to 16 Sin b. Chorus Analog Input (Direct) Effect Input Fixed Delay Var Delay Line Analog Mix LFO Sin/Ramp The Chorus effect tries to recreate the illusion of more than one instrument from a single instrument sound. Two musicians playing the same instrument never play in perfect unison (both time and pitch wise).
mes aligned in counter phase, resulting in a time-varying filtering that has been named 'flanger'. The structure of the flanger is then that of the mix of two randomly delayed copies of a signal. Here the detuning process is same as the one of the chorus, added with a "regeneration" part. Flanger Parameters Adjust Rate - This control sets the amplitude modulation rate. Sin/Ramp LFO - From 1 to 8 Ramp, From 9 to 16 Sin d.
5.4 Combined Effects a. Delay+Reverb - The third multieffects program adds a Room to the different delay presets. b. Flanger+Reverb - The first multieffects program is a layered stereo flange and large room reverb. It works great on guitars, synths and electric pianos. c. Chorus+Reverb - The second multieffects program is a layered stereo chorus and large room reverb. Also that one works great on guitars, synths and electric pianos. 5.5 Effects Summary Table a.
ROOM 2 ROOM REVERB Algorithm Input LP filter: 16 kHz Process High Damp Filter: 14 kHz Process Low Damp Filter: 20 Hz Predelay Time: 0.003 ms Output LP filter: 12 kHz Output HP filter: 20 Hz DECAY TIME ROOM 3 ROOM REVERB Algorithm Input LP filter: 6.5 kHz Process High Damp Filter: 2.5 kHz Process Low Damp Filter: 20 Hz Predelay Time: 0.
DELAY/REVERB MONO DELAY + REVERB Algorithm Input High Damp Filter: 18 kHz Input Low Damp Filter: 10 Hz Predelay Time: 0.
Preset encoder position Hall 2 Hall 3 Variation encoder position Value 10 11 Decay time = 1.46 sec. Decay time = 1.90 sec. 12 Decay time = 2.20 sec. 13 Decay time = 3.50 sec. 14 Decay time = 4.40 sec. 15 Decay time = 9.10 sec. 16 1 2 Decay time = > 30 sec. Decay time = 0.39 sec. Decay time = 0.49 sec. 3 Decay time = 0.51 sec. 4 5 6 7 8 9 10 Decay time = 0.58 sec. Decay time = 0.68 sec. Decay time = 0.80 sec. Decay time = 0.82 sec. Decay time = 1.00 sec. Decay time = 1.22 sec.
Preset encoder position Room 1 Room 2 Variation encoder position Value 14 Decay time = 6.40 sec. 15 Decay time = 13.90 sec. 16 Decay time = > 40 sec. 1 Decay time = 0.32 sec. 2 Decay time = 0.37 sec. 3 Decay time = 0.43 sec. 4 Decay time = 0.46 sec. 5 Decay time = 0.55 sec. 6 Decay time = 0.64 sec. 7 Decay time = 0.68 sec. 8 Decay time = 0.79 sec. 9 Decay time = 0.99 sec. 10 Decay time = 1.28 sec. 11 Decay time = 1.68 sec. 12 Decay time = 1.90 sec. 13 Decay time = 2.
Preset encoder position Room 3 Plate 1 Plate 2 Variation encoder position Value 16 Decay time = > 25 sec. 1 Decay time = 0.35 sec. 2 Decay time = 0.38 sec. 3 Decay time = 0.41 sec. 4 Decay time = 0.47 sec. 5 Decay time = 0.52 sec. 6 Decay time = 0.62 sec. 7 Decay time = 0.73 sec. 8 Decay time = 0.87 sec. 9 Decay time = 1.07 sec. 10 Decay time = 1.30 sec. 11 Decay time = 1.65 sec. 12 Decay time = 1.80 sec. 13 Decay time = 2.80 sec. 14 Decay time = 3.40 sec.
Preset encoder position Preset encoder position Delay Variation encoder position Value 2 Decay time = 0.51 sec. 3 Decay time = 0.56 sec. 4 Decay time = 0.64 sec. 5 Decay time = 0.67 sec. 6 Decay time = 0.81 sec. 7 Decay time = 0.96 sec. 8 Decay time = 1.07 sec. 9 Decay time = 1.39 sec. 10 Decay time = 1.61 sec. 11 Decay time = 2.13 sec. 12 Decay time = 2.40 sec. 13 Decay time = 3.70 sec. 14 Decay time = 4.80 sec. 15 Decay time = 8.50 sec. 16 Decay time = > 30 sec.
Preset encoder position Variation encoder Delay Time position Delay+Rev Delay Decay Time Rev. Decay Time 1 30 ms - 1.30 sec. 2 40 ms - 1.30 sec. 3 50 ms - 1.30 sec. 4 60 ms - 1.40 sec. 5 80 ms 0.75 sec. 1.30 sec. 6 100 ms 1.40 sec. 2.30 sec. 7 200 ms 2.40 sec. 3.00 sec. 8 300 ms 3.40 sec. 3.30 sec. 9 400 ms 3.30 sec. 4.00 sec. 10 500 ms 4.00 sec. 4.40 sec. 11 600 ms 4.40 sec. 6.00 sec. 12 700 ms 5.00 sec. 7.30 sec. 13 800 ms 6.00 sec. 7.40 sec.
Preset encoder position Variation encoder Period position Rate Amplitude Att. 13 400 ms 2.50 Hz 36 % 14 320 ms 3.12 Hz 36 % 15 260 ms 3.84 Hz 36 % 16 200 ms 5.00 Hz 36 % Preset encoder position Variation encoder position Period Rate Chorus 1 11.00 sec. 0.09 Hz 2 4.80 sec. 0.21 Hz 3 3.20 sec. 0.31 Hz 4 1.78 sec. 0.56 Hz 5 1.20 sec. 0.83 Hz 6 1.09 sec. 0.91 Hz 7 0.75 sec. 1.30 Hz 8 0.41 sec. 2.43 Hz 9 12.80 sec. 10 9.20 sec. 0.11 Hz 0.07 Hz 11 1.06 sec.
Preset encoder position Variation encoder Period position Rate Feedback % 7 6.05 sec. 0.165 Hz 89 8 6.05 sec. 0.165 Hz 92 9 4.50 sec. 0.222 Hz 82 10 3.00 sec. 0.333 Hz 82 11 1.75 sec. 0.571 Hz 82 12 1.30 sec. 0.769 Hz 82 13 1.00 sec. 1.000 Hz 82 14 0.75 sec. 1.333 Hz 82 15 0.70 sec. 1.428 Hz 82 16 0.53 sec. 1.886 Hz 82 Preset encoder position Variation encoder Chorus Period position Chorus Rate Rev. Decay Time Chorus + Rev. 1 1.30 sec. 0.769 Hz 0.78 sec.
Preset encoder position Flanger + Rev. Variation encoder Flanger Period position Flanger Rate Rev. Decay Time 1 2.00 sec. 0.500 Hz 0.80 sec. 2 2.00 sec. 0.500 Hz 1.30 sec. 3 2.00 sec. 0.500 Hz 1.75 sec. 4 2.00 sec. 0.500 Hz 2.20 sec. 5 2.00 sec. 0.500 Hz 3.00 sec. 6 2.00 sec. 0.500 Hz 3.60 sec. 7 2.00 sec. 0.500 Hz 4.20 sec. 8 2.00 sec. 0.500 Hz 6.40 sec. 9 2.60 sec. 0.384 Hz 0.80 sec. 10 2.60 sec. 0.384 Hz 1.30 sec. 11 2.60 sec. 0.384 Hz 1.75 sec. 12 2.
28 A B C D INPUT L (MONO INPUT) INPUT R FOOT SWITCH 1 PJ2 PJ1 PJ5 FOOTSWITCH CONTROL 1 INPUT LEVEL INPUT LEVEL INPUT BUFFER & AMPLIFIER ENCODER A VARIATIONS ENCODER A PROGRAM 2 IN-R IN-L OUT-R OUT-L STEREO AUDIO CODEC A/D and D/A CONVERTER (U6 PCM3001E) SO0 (U8 TMS57002DPHA) (U9 P87C54UBAA) SI0 DSP AD0-AD7 3 3 LRCKIN=43.20KHZ 3 BCK=1.
6.2 Specifications Electrical Frequency Response: +0.5 / -1.5 dB from 20Hz to 20 kHz S/N Ratio (process) 80 dB "A" wtg, 20 Hz-22kHz S/N Ratio (bypass) >90 dB "A" wtg, 20 Hz-22kHz THD+Noise: <0.
Processing and Memory Processor Speed: 12 MIPs (million instructions per second) Internal DSP resolution: 52 bit MPY accumulator Main Preset Programs 16 Preset Total Combinations 256 Internal digital audio memory: 3000 milliseconds Physical Net Weight: 1kg(2.20lb) Dimension: 200(W) 150(D) 45(H)mm (7.87" 5.91" 1.
7. 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.
3.5 In no event shall LTO be liable for any incidental or consequential damages. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above exclusion or limitation may not apply to you. 3.6 This warranty gives you the specific rights, and these rights are compatible with the state laws, you may also have other statutory rights that may vary from state to state.
SEIKAKU TECHNICAL GROUP LIMITED No. 1, Lane 17, Sec. 2, Han Shi W. Road, Taichung, 401 Taiwan http://www.altomobile.com Tel: 886-4-22313737 email: info@altomobile.com Fax: 886-4-22346757 All rights reserved to ALTO Mobile. Due to continued development in response to customer feedback, product features, specifications and/or internal/external design may be changed without prior notice. No photocopying, translation or reproduction of any part of this user manual is allowed without prior written permission.
