The Professional's Keyboard?
Korg's follow-up to the successful M1 takes them further upmarket. David Mellor looks at an instrument for those willing to pay a little extra for the professional touch.
The Korg T2 has one larger and one smaller sibling, but they share the same essential qualities. The T1 has a piano-like 88-note keyboard in comparison with the T2's 76-note synth keyboard. The T3 has a conventional 61-note keyboard like the M1. Internally, they are identical with the exception that the T1 has as standard an internally mounted RAM card, which is an option on the other two models.
The T series have parents, too - the M1 and M1R. If you are familiar with either of these excellent instruments then the T series will be very easy to come to terms with, and you may recognise some of the voices. If you are not too familiar with the M1 and M1R (the rack-mount M1), then let me supply a few details...
The Korg M1 is very similar in concept to the ground-breaking Roland D50, though perhaps a little in advance. Roland have a name for the system of synthesis used in the D50 and its variants - LA or Linear Arithmetic synthesis. Korg also have a name for their way of working - AI or Advanced Integrated synthesis. I would prefer to call a spade a spade rather than a vertically operated digging tool, so let's use the term 'Sample+Synth', as employed by Martin Russ in his review of the M1R [SOS July 89].
Roland's implementation of Sample+Synth (S+S) involves combining very short samples of the attack transients of real instruments with conventional synthesized waveforms. The sample gives the sound its character and the synthesized waveform fleshes it out. You could, if you were really adventurous, achieve much the same result with a sampler and a basic analogue synth, but it's nice to have the whole thing in one box, and I am proud to be a D550 (rack-mounted D50) user myself.
Korg's S+S is somewhat different. Rather than combine the sample with a synth generated waveform, the sample actually is the waveform. Where Roland's samples are, in the main, just short transients, Korg's library includes a large collection of sustaining loops. Some of the samples just happen to be square wave, sawtooth, and other synth favourites.
In fact, the best way to describe the Korg system is as the front end of a sampler with the rear end of a synth (apologies for the inelegance). The sampler provides the raw waveform and the synth supplies filtering and modulation. Some would argue that it offers the best of both worlds.
Let's look at the way the T2 works in more detail...
First of all, don't think of the T2 as having oscillators. The basic waveforms are all contained in ROM, eight megabytes of it! It would be pretty pointless to have real sine, square, sawtooth etc oscillators churning away when all of these waveforms can be contained in just a few kilobytes of ROM.
Despite what I just said, Korg do talk about oscillators in connection with the T2. But what they really mean are the sections of circuitry that retrieve the various sampled and artificially created waveforms from ROM. Since there doesn't seem to be a word for 'sections of circuitry etc' in the dictionary, 'oscillators' is probably as good as any - as long as you remember that all they do is pull the waveforms out of ROM.
Contained in the eight megabytes of ROM are 189 'multisounds'. A multisound is simply a sample, or a series of samples split across the keyboard. These samples cannot be edited, nor can the keyboard splits be reset. Although the T2 uses samples as a basis for sound production, it is not a sampler as such and does not offer sampler-style editing facilities.
Many of the multisounds have looped samples, and listening to the raw samples is an instructive experience. The Korg sampling department have achieved amazingly good results from very short samples with, apart from the very occasional exception, totally glitch and wobble-free loops. As any samplist knows, the longer a sample is, the easier it is to edit and to use. Short samples, more of which can be squeezed into a given amount of memory, are much more difficult to handle.
Each oscillator can access one multisound and each program can use one or two oscillators per voice, giving 16-note or 8-note polyphony respectively. Each oscillator has its own set of synthesizer type processing attached.
It almost goes without saying these days that every new keyboard that comes along is described as a workstation. It is not a term which appeals to me very much. When I am writing an article for Sound On Sound I sit at a workstation - a desk with a computer, telephone, my rough notes and various reference materials. I don't need to leave my seat for anything except coffee and to stretch my legs. When I am being musically creative, I operate a fair quantity of equipment which takes up a certain amount of space, and entails hopping from one point in the studio to another on a continuous basis. And rather than wishing to condense this equipment into a tabletop package, I am earnestly intent on expanding it.
The Korg T2 is described as a workstation and, to be fair, you can operate quite a lot of MIDI gear from this one unit, and it is pretty versatile in its own right. But I hope no-one will gain the impression that this is all you need to make music. Music is a much bigger concept than any one keyboard can encompass, and I predict that by 1990 'workstation' will be very much last year's buzz word.
That's got that off my chest. Now I can move on to what the T2 can do to enhance your life, if not make it totally complete. As well as the synthesizing section, the workings of which I described above, the T2 has a fully-fledged high quality effects unit and a proper sequencer. And by 'proper' sequencer, I mean one that you can use for serious work and to control a MIDI system, rather than use only as a musical sketchpad.
Looking at the T2 from the outside, you will see a smooth black object with 76 pearly white keys, several buttons and a large LCD window. The display is indeed a very good size with a backlit 240x64 matrix, enough for several lines of text. Many of the buttons are brightly illuminated when pressed - good point - but are designed for show rather than go. They are convex, so that your finger tends to slip off them, and are rather stiff to operate. I had an aching finger by the time I had taken the reverb off all the presets to see what they really sound like. A professional instrument should feel good to use, as well as sound good. The non-illuminated buttons are on the small side, particularly as there is so much free panel space going to waste.
The construction seems adequately sturdy, but the T2 could really do with a couple of handles. It's not heavy, but it is a full armspan in width and can be tricky to move around. Also, the joystick pitch bend/modulation control looks a bit delicate. I speak as one who broke his Roland joystick down to a small - but usable - stump years ago.
Data entry is by the familiar slider and up/down nudge buttons. There is a 'Fine' button which increases the slider's resolution so that you can make single step parameter adjustments with it easily. Below the display are eight buttons marked 'A' to 'H', which provide easy access to a number of the parameters during performance, rather than having to enter the editing pages to make changes. To the right are the edit buttons - 'Edit Combi', 'Edit Program' and so forth - and the Page and Bank Select buttons. A nice feature of the bank select system is that when you pick a bank, the display shows the name of each of the 10 programs in that bank.
On the back panel are the MIDI sockets: one In, one Thru and four Outs. The MIDI Outs are arranged as two pairs, which are separately processed to minimise MIDI data clogging. Also on the back are two card slots: one for program data, the other to provide access to additional samples.
Audio output from the T2 is by way of four jack sockets. Two are arranged as a stereo pair, between which sounds can be panned; the other two are individual outputs.
Bulk storage is via a high density 3.5" floppy disk drive. Normally speaking, a high density drive would not, of course, be necessary just to store program data occupying a few tens of kilobytes. Indeed, the whole instrument can be loaded in two to three seconds. But a high density drive is necessary for loading one megabyte's worth of sample data into the T2's PCM RAM option, which I shall talk briefly about later.
The T2 is plentifully supplied with program memory. There are two banks, A and B, each of which can store 100 programs and can be edited at will. A third bank holds 100 Combinations. A Combination can mix the sounds of up to eight programs for megathick sonorities. So on the T2, a total of 300 sounds are at fingertip recall. Who was it at MIDI headquarters that thought 128 program change numbers would be enough?
In program mode, there is a useful degree of control provided by the A to H buttons below the display, in combination with the data slider. They are:
A. Oscillator balance, controlling the relative levels of the two oscillators, if two are used in the program.
B. VDF Cutoff, changing the cutoff frequency of the filters. (VDF, I assume, stands for Variable Digital Filter, the manual doesn't say).
C. VDA level, adjusting the oscillator levels. (VDA = Variable Digital Amplifier?).
D. Velocity sensitivity.
E. Aftertouch sensitivity.
F. Attack time, adjusting the VDFs and VDAs simultaneously.
G. Release time, again operating on the VDFs and VDAs.
H. Dry/Effect balance, controlling the contribution of the effects section.
These offer quick and very useful control over the sounds generated. As each one is altered, the display shows the amount of change graphically.
Editing the programs is simple enough once you have the hang of the cursor key system. There are two buttons at the left of the display for up and down movement. In edit mode, the A to H buttons below the display work as horizontal cursor shift buttons. In practice, you find the cursor bobbing and weaving and going to parts of the display you didn't anticipate. But there are only so many display pages and you soon get used to the layout of each. Anyway, it's a hell of a lot better than squinting into a two line LCD!
There are seven edit pages available in program edit mode. They can be stepped through using the increment/decrement buttons, or by pressing the appropriately numbered bank button. There is an impressive range of editing functions available, but not a superfluity - every function is there for a useful and sonically effective purpose. A nice touch is that when you leave any page for another, the cursor position is remembered, so that you return to where you left off when you come back to a particular page.
One element that deserves a special mention is the filter. Some synth and sampler filters work, but don't achieve an awful lot. In the old days of analogue synthesis the Minimoog was famous, with just cause, for its filter because it was simply more effective than those provided by other manufacturers. The T2's filter is very good indeed. As the cutoff frequency is lowered from its maximum, you really hear the sound change, never for the worse but always to something different and interesting. I like it so much I wish mixing console manufacturers would take a look and apply something similar to their high frequency EQ controls.
Combinations are basically layered programs. Layered, that is, up to the maximum of the 16 voices of which the T2 is capable. (There is a MIDI overflow mode by which excess notes can be passed on to another instrument, if necessary). Combinations are multitimbral, the individual program sounds being controlled, if desired, by separate MIDI channels.
But the T2 is not limited to controlling its own voices in Combination mode. It can take direct charge of up to eight MIDI channels externally. One channel might be controlling a stack of eight T2 internal programs, the other seven might be controlling totally separate MIDI keyboards or expander modules.
Combination mode has two pages before you even get into editing. The first page displays and controls the program numbers - any mixture of banks A and B - and their levels. The second page is for controlling program changes and levels of external synths. Combination editing covers the fine details of each program: tuning, velocity and aftertouch sensitivity, key range, velocity window, and more. Rather than being a simple way of playing two or more sounds at the same time, Combination mode is complex enough almost to be synthesis in its own right, but starting with complex sound sources.
One program element that doesn't get passed on with each program when used in Combination mode, by the way, is the effects setting. Having a separate effects unit for each of eight programs might be nice, but not really practical. The effects unit is therefore applied to the Combination as a whole, and programmable for each individual Combination.
The Korg T2 is a very powerful instrument. Particularly so when the bonus of a 50,000 event 8-track sequencer is added. As indicated in a separate panel, the on-board sequencer is quite capable of standing on its own two feet and giving a good level of service. I wouldn't swap it for my own favourite sequencer for ease of operation, but it can do a workmanlike job of controlling the T2 and other connected synths.
As it stands, the T2 can be seen as a very high quality synth with sampled sound sources, looking on the sequencer as a bonus. The sound quality is excellent, the keyboard is excellent, and so are the program and Combination editing facilities. There is also plenty of memory space, and convenient program and sequence storage on floppy disk.
If I had a complaint, it would be that Korg have not taken the professional angle quite far enough. A couple of handles and larger, flatter buttons might mar the designer looks slightly, but it's the music we care about and increased user convenience equates, in the end, to better music.
When the optional one megabyte RAM card is available, it will transform the T2 from a good sounding instrument with one set of samples into an instrument with a potentially unlimited range of sound sources. And if we are provided with raw material on disk of the quality level that already exists in ROM, then we are in for a treat. And if MIDI sample dumps into the RAM card will be feasible, as it appears from the manual, then even better.
In short, if the Korg M1 was anyone's candidate for the number one synth, the T2 must now be top dog (aside from the T1, of course!). With the optional RAM card fitted, it could well be the professional's keyboard of choice.
£2999 inc VAT.
Korg UK Ltd, (Contact Details).
Review by David Mellor
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