ADA-Flanger-manual 电路图.pdf

Voltage controlled Flanger OWNERS MANUAL Originally written by ADA SIGNAL PROCESSORS, INC. Scanned and edited by Jur at 01 June 2003. Original ADA logo edited and rendered by Barend Onneweer of Raamw3rk.) The version of this manual is copyrighted and may not be sold or placed on a website without permission of the editor. Release No.1 for RadioFans.CN 收音机爱 好者资料库 ADA voltage controlled Flanger owners manual The A/DA Flanger is a second generation electronic flanger capable of producing a broad range of sound colorations, dramatically enhancing the effect of any amplified musical instrument, voice or percussive instrument. The term flanging refers to the technique of manually varying the speed of two tape recorders independertly with the same program material, while mixing down in recording studio;. The A/DA flanger electronically simulates varying speed in real time, during the performance. The capabilities of the A/DA Flanger are numerous and astounding. Effects such as rotating speakers, chilling vibrato, jet sounds, resonance modification, intensified studio flanging and incredible filter matrices, to name a few, suggest that experimentation will certainly find the sound you have been looking for. When two identical signals separated by a short time delay are added together, reinforcements (peaks) and cancellations (notches) occur in the outfit level. The positions of the peaks and notches are mathematically related to the time delay as can be seen in the graph opposite. The example shows the comb filter that occurs at the output of the A/DA Flanger at 1 ms time delay. If a 500 Hz signal is introduced into the Flanger at 1 msec delay, it will not be heard at the output. However a 1000 Hz signal will be reinforced, thus heard at the output. By changing the time delay, we move the position of the peaks and notches up or down the audio frequency spectrum creating flanging effects. For further explanation see Bartlett, Bruce, A Scientific Explanation of Phasing (Flanging), Journal of the Audio Engineering Society. Dec. 1970, Vol. 18, No. 6, pp. 674-675. Page: 2 of 6 RadioFans.CN 收音机爱 好者资料库 ADA voltage controlled Flanger owners manual INPUT/OUTPUT 1. Instruments plug into the IN jack. 2. Amplifiers plug into the OUT jack. 3. Plug the power cord into a standard 1 20 VAC 60 Hz receptacle. For 240 VAC 50 Hz operation, contact your local dealer for jumper modification on printed circuit. CONTROLS MANUAL Sets the time delay and is disabled when the RANGE is turned fully clockwise. RANGE Determines whether the time delay is a function of the MANUAL control or the SPEED control, or a combination of both. SPEED A continuously variable sweep that moves over the entire delay range, shifting the comb filter up and down the sound spectrum. ENHANCE A variable gain feedback loop around the delay line which produces amplitude peaking and echo decay time variation of input signals. EVEN/ODD Allows passband peaking at even or odd harmonic relationships. HARMONICS FOOTSWITCH Engages or bypasses the electronics of the A/DA FLANGER. THRESHOLD A noise eliminating gate that removes noise when input signal level is low. Full clockwise position minimizes this function. CONTROL A voltage control input that allows direct control of time delay with an externally applied voltage. The CONTROL input accepts either the A/DA FLANGER PEDAL A or a 0 volt to +5 volt control voltage. In either case the connection should be made with a 3-conductor stereotype cable. When the 3-conductor plug is inserted into the CONTROL input jack, the MANUAL knob is overridden. When using the A/DA CONTROL PEDAL A, simply use the supplied 3-conductor cable for the interconnection. Figure 1 shows the levels presenter the 3-conductor jack. To use an external control voltage, apply the voltage between points 1 and 2, with 2 being more positive than point 1. Since the A/DA FLANGER supplies a ground and an internally generated +5 volts, a potentiometer could be placed across this voltage with the wiper connected to point 2 as shown in figure 2. Page: 3 of 6 ADA voltage controlled Flanger owners manual SPECIFICATIONS Maximum delay 1 4 ms Maximum Signal Level +4dBV Minimum delay 0.4 ms Frequency response 20 Hz- 16 KHz Maximum sweep rate 0.1 sec (10 Hz) Control voltage 0 volts to +5 volts Minimum sweep rate 25 sec (0.04 Hz) Dimensions: Width 6.5 (16.5cm) Input impedance 0.5 Mega ohm Length 5.5 (14cm) Output impedance 2 Kilo ohms Height 2.75 (7cm) Gain 1.6 dB Shipping Weight 3 lbs. (1,4kg) USING THE A/DA FLANGER We have provided the following control knobs settings for you to experiment with, so that you may quickly familiarize yourself with the A/DA FLANGER. We have left some of the knobs in the following diagrams without pointers because their positioning has little or no effect on the given setting. To find the proper setting of the THRESHOLD control, hook up the A/DA FLANGER for use and turn the THRESHOLD knob fully clockwise. Connect an instrument to the FLANGER and play a note or chord. As the signal decays some residual noise in the FLANGER will be heard. Slowly turn the THRESHOLD knob counter-clockwise until the flanging effect, along with the noise, is squelched. This is the position in which this control should remain set for all of the following diagrams. FULL RANGE This setting demonstrates the maximum sweep range of the A/DA FLANGER. EVEN/ODD HARMONIC COMPARISON. Move the EVEN/ ODD switch back and forth for comparison at various MANUAL control settings. Page: 4 of 6 ADA voltage controlled Flanger owners manual VIBRATO The SPEED control sets the speed of the vibrato. The RANGE control determines the depth of the vibrato. LESLIE The adjacent setting is for chorale or slow LESLIE. For tremolo or fast LESLIE, turn the SPEED knob further clockwise. PITCH CHANGE Turning the SPEED control further clockwise increases the amount of pitch change. CHORUS EFFECT This setting produces the popular chorus effect that thickens the sound of your instrument. CONTROL PEDAL A When the stereo pedal cord (provided with the CONTROL PEDAL A) is plugged into the A/DA FLANGER CONTROL jack, the MANUAL control knob becomes inoperative. The pedal regulates the control voltage, varying the delay time as the MANUAL knob would do. Panning the pedal will produce a wah effect or pitch change. For the most dramatic effect, Page: 5 of 6 ADA voltage controlled Flanger owners manual set the RANGE fully counter-clockwise. For decreased pedal range, hence a more subtle effect, turn the RANGE knob more clockwise. The A/DA CONTROL PEDAL A has been provided with an external tension adjustment. If the factory preset treadle action is too tight or too loose for you, adjust the screw on the bottom side of the pedal in quarter turn increments. Turning the screw clockwise will tighten the treadle action, counter-clockwise will loosen the action. FULL WARRANTY All A/DA products are warranted against defects in material and workmanship for a period of one year from date of purchase. A/DA will replace defective parts and make necessary repairs at no charge if factory inspection reveals faulty workmanship or material. This warranty does not cover damage due to misuse, accident or neglect, A/DA retains the exclusive right to make such determination on the basis of factory inspection. Products returned to the factory must he shipped prepaid. This warranty remains valid only if repairs are performed by A/DA, and provided that the serial number on the unit has not been defaced or removed. This warranty is expressly in lieu of all other warranties either expressed or implied. A/DA, 2316 Fourth Street, Berkeley, CA 94710 (415) 548-1311 Page: 6 of 6