The LCS-1040 is a USB speaker that can be separated into two components: a USB DAC and a conventional pair of amplified PC speakers, without any modificatons. The DAC output is a male 1/8" stereo connector, and can be interfaced with other equipment using readily available adaptors. The amplified PC speaker portion has a conventional female 1/8" stereo input connector.
The USB DAC portion of LCS-1040, when installed in Windows 98, is equivalent in function to the output side of a regular PC sound card, with Roland software wave-table MIDI. It is tested here as if it were a sound card beause it is equivalent in function.
| Summary | ||||
|---|---|---|---|---|
| Parameter | My Opinion |
Mode of Operation | ||
| Full Duplex
Loop Back |
Analog > Digital | Digital > Analog | ||
| Frequency Response | Very Good | N/A | N/A | 20-18KHz +0.6/- 0.0 dB |
| 1 KHz Total Harmonic Distortion | Very Good | N/A | N/A | 0.004% @ -3 dB |
| Signal to Noise Ratio | Very Good | N/A | N/A | 72 dB |
| 19 & 20 KHz Intermodulation Distortion | Very Good | N/A | N/A | 0.002% @-2 dB |
| Dynamic Range | Very Good | N/A | N/A | 77 dB |
| Jitter Distortion | Very Good | N/A | N/A | -70 dB @100Hz |
| Software Used: | Windows 98 1998; Driver Release: 4.1.1998 | |||
Technical Tests of LabTech LCS-1040 USB Speaker (DAC portion) D
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