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40
APPENDIX – BUS POWER NOTES
Bus Power
Impact Twin can be operated using FireWire bus power.
With FireWire bus power, the device is powered directly
from the FireWire connection, and you do therefore not
need to use the external power supply (included with
Impact Twin).
There are a few things to be aware of regarding bus
power:
4-pin FireWire Connectors
Please note that some FireWire ports are not able to
provide bus power at all! Laptop computers with 4 pin
connectors do not provide bus power.
Several Impact Twins on a Single FireWire Bus
If you run more than one Impact Twin device on a
FireWire bus, only one of them can be bus-powered;
the other units require power from the supplied external
power supplies.
Insufficient Bus Power
Some laptop computers (even those with 6-pin
connectors) do not provide enough bus power for a
single Impact Twin unit to run properly. If you experience
problems, please use the provided external power supply
as the first effort to solve the problem.
APPENDIX – ASIO CHANNEL NAMES
IMPACT TWIN
44.1 to 48 kHz
88.2 to 96 kHz
176.4 to 192 kHz
Inputs
Inputs
Inputs
1 Main / line 1
1 Main 1 / Line 1
1 Mic inst / line 1
2 Main / line 2
2 Main 2 / Line 2
2 Mic inst / line 2
3 Line 3 / L
3 Line 3 / L
3 Line 3 / L
4 Line 4 / R
4 Line 4 / R
4 Line 4 / R
5 SPDIF
5 SPDIF
5
6 SPDIF
6 SPDIF
6
7 ADAT/TOS
7 ADAT/TOS
7
8 ADAT/TOS
8 ADAT/TOS
8
9 Optical
9 Optical
9 Optical
10 Optical
10 Optical
10
11 Optical
11
11
12 Optical
12
12
13 Optical
13
13
14 Optical
14
14
Outputs
Outputs
Outputs
1 Main 1 / Line 1
1 Main 1 / Line 1
1 Line 1 / Main L
2 Main 2 / Line 2
2 Main 2 / Line 2
2 Line 2 / Main R
3 Line 3 / L
3 Line 3 / L
3 Line 3 / L
4 Line 4 / R
4 Line 4 / R
4 Line 4 / R
5 SPDIF
5 SPDIF
5
6 SPDIF
6 SPDIF
6
7 ADAT/TOS
7 ADAT/TOS
7
8 ADAT/TOS
8 ADAT/TOS
8
9 Optical
9 Optical
9 Optical
10 Optical
10 Optical
10
11 Optical
11
11
12 Optical
12
12
13 Optical
13
13
14 Optical
14
14
This page describes how the Impact Twin’s ASIO channels are distributed according to the selected sample rate.
