Sound Performance Lab 2489 manual Technical Specifications, Speaker Buttons, Operation

Operation

Speaker Buttons

The speaker buttons enable each surround speaker output (L, C, R, LS, RS, LFE) and the stereo pair output to be switched on (pressed) and off indepen- dently.

Tip: If you are not using a surround speaker set, you can connect two stereo speaker pairs to the SMC. Simply connect one pair to the Stereo Speaker Outputs and the second pair to the Surround Speaker Outputs L and R.

Technical Specifications

Input Impedance
Balanced (Sub-D)	50 kOhms
Unbalanced (RCA)	›10 kOhms
Output Impedance
Balanced (1/4“ TRS)	‹600 Ohms
THD+N
-10 dB (Input level)	0.04 %
0 dB	0.01 %
+10 dB	0.006 %
+18 dB	0.002 %
+22 dB	0.1 %
Noise, A-weighted	-98 dB
Maximum Input Level	+22 dB
Dynamic Response	120 dB
Common Mode Rejection
@ 100 Hz	›70 dBu
@ 1 kHz	›70 dBu
@ 10 kHz	›60 dBu
@ 100 kHz	›50 dBu
Frequency Response	10 Hz-100 kHz (-3 dB)
Phase	-36° (10 Hz-120 kHz, -3 dB center frequency)
Phase (linear)	20 Hz-100 kHz
Dimensions H x W x D:	91 x 272 x 220 mm (3 9/16" x 10 11/16" x 8 21/32")
Weight	2.3 kg (5 lbs)

SPL reserves the right to make technical changes without prior notice.

Surround Monitor Controller 2489 9