![]() ![]() Two additional LEDs show the sweep speed of the flanger and indicate when the clipping level of the input amplifier has been reached. Each button has a corresponding LED to indicate the state of the system. The three push buttons are used to select the delay time (1-10 ms or 7.5-75 ms), Invert (to phase invert both channels) and effect On/Off. (the internal feedback or regeneration fraction), Channel A Mix, Channel B Mix (the ratio of dry to processed signal in each channel), and Input (the gain of the input amplifier). #Dod 512 reverb effects processor manually manual#Working from left to right the pots are: Manual (for manual adjustment of the centre frequency around which the flanging occurs), Width (the excursion of the sweep), Speed (the rate at which the flanging occurs), Regen. The front panel houses the majority of the controls - seven pots and three push buttons. For a rack-mounting instrument the housing is more than sufficient. The cabinet is reasonably sturdy although not as robust as some comparable equipment around at the moment. Having said this the standard of construction seems perfectly good and, to give the manufacturers the benefit of the doubt, it is possible that the early model supplied for review is not typical of a normal production run. This is not necessarily a problem in itself although it does perhaps suggest haste and a lack of attention to detail during production. Some off the components (including the switches which protrude through the front panel) are mounted at slightly strange angles. However, the quality of assembly on the review model was less than perfect. Three LEDs are mounted inside the case which are presumably intended for use in setting up before despatch or for maintenance since they are not visible from the outside. The circuit contains just 9 ICs, including the delay chips, which are sensibly seated in sockets. The pots and switches are mounted directly onto the board - always a good sign since it minimises loose wiring and hence reduces the chances of noise pickup. The unit contains one single-sided PCB measuring 10" x 3" which houses everything apart from a small transformer. However, in addition to this the system can generate some quite respectable vibrato, chorus, slap back echo and reverberation effects which are discussed later. ADT) to thicken up a signal, giving either mono or synthetic stereo from a mono source signal as desired. It can either act as a flanger to produce a range of characteristic effects or it can act as a doubler (ie. All connections are made by means of ¼" jack plugs. The finish is in satin black with clear white legends and the controls consist of collet-style knobs and pushbuttons which are logically laid out. There is plenty of room to spare inside and the unit could have been made even more compact if necessary. The housing is a 19", 1U high rack-mounting cabinet which is just 6" deep. It is based on an analogue delay line to keep the circuitry simple and the price low. It is a genuine studio quality system (produced in America) retailing at around £420 in this country. The DOD R-875 Flanger/Doubler is clearly aimed at this market. The market must be seen to be profitable - most manufacturers seem to be very interested in this relatively new area of sales and have produced all manner of rack-mounting equipment in the sub- £1000 price bracket. With this trend, higher quality units - aimed essentially at small studios - have become correspondingly cheaper. ![]() It is now possible to buy quite respectable little foot-pedal effects for not much more than £25. Isn't technology wonderful? The range of effects on the market seems to grow daily and with this explosion has come the inevitable drop in price. ![]()
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