| L IN | R IN | L IN | R IN | L OUT | IMAGEROUT | L OUT | R OUT | |
| 1 | 1 | 2 | 2 | 1 | ENH. | 1 | 2 | 2 |
CH. | CH. | CH. | CH. | CH. |
| CH. | CH. | CH. |
L | Buffer | + | ∑ |
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GR 1 |
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R | Buffer |
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| 2 |
L | Buffer |
| + | ∑ |
| GTH400 Block Diagram | ||
| GR 1 MODE SWITCH |
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| 1 |
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1 | LP | 2 | 1 |
2 | 3 | ||
3 | 2 | ||
| HP |
| 3 |
| ❶ | GR 1 L | |
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| ❷ PREOUT | |
1 |
| 1 | 1 |
2 |
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3 | LP | 2 | 2 |
| 3 | ||
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| GR 1 R | |
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| HP | 3 | PREOUT |
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Buffer
Buffer
1 |
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2 |
| BOOST |
3 |
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| ❸ | |
| BASS | |
1 |
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2 |
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3 |
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AMP GR 1 Left Speaker Out
AMP GR 1 Right Speaker Out
GTH400-20107 06/03/98 15:49
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| 2 |
GR 2 |
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| + | GROUP 2 |
R | Buffer | ∑ | INPUT |
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| 1 – GR 1 | |
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| 2 – GR 2 |
L | Buffer |
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GR 3 |
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| 1 | 1 |
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1 | LP | 2 | 2 |
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3 |
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2 |
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3 | HP |
| 3 | GR 2 L |
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| ❶ |
| ❷ PREOUT | |
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| LP | 1 | 1 |
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| 2 |
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| 2 |
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| 3 |
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1 |
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HP |
| GR 2 R | ||
2 |
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3 |
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| PREOUT |
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| GR 2 MODE SWITCH |
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Buffer
Buffer
1
2
3
❸
1
2
3
BASS BOOST
AMP GR 2 Left Speaker Out
AMP GR 2 Right Speaker Out
Side 11
11
R | Buffer |
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+ | + | 1 | 1 | ||
| inputs | ∑ | 2 | ||
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L | + |
| + | 1 |
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| Buffer | + | ∑ | 3 | GROUP 3 |
| - |
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| INPUT |
GR 1 |
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| 1 – GR 3 |
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| 2 – GR 2 |
| + |
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| 3 – GR 1+2 |
R | Buffer |
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- |
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L | + |
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| Buffer |
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| - |
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GR 2 |
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| + |
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| Buffer |
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R - |
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| 1 | 1 |
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| 2 | 2 |
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LP | 3 |
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3 |
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❶ | GR 3 L | |||
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HP |
| PREOUT | ||
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| 1 |
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| 2 | 1 |
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LP |
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| 3 |
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| GR 3 R | |||
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HP |
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| PREOUT | |
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Speaker | Preamp | ❸Mode | ||
❶Crossover | ❷Crossover | |||
1 – Flat | 1 – Flat |
| 1 – L | |
2 – Low Pass | 2 – Low Pass |
| 2 – Stereo | |
3 – High Pass | 3 – High Pass |
| 3 – L+R |
Buffer
Buffer
1
2 3
❸
1
2
3 GR 3 Input Mode
BASS BOOST
AMP GR 3 Left Speaker Out
AMP GR 3 Right Speaker Out