Mackie SP400C instruction manual Introduction, Waveguide

4. Introduction	5. Product Description
The SP400C is a complete two-way bass-reflex	1.	Grille
flush-mount loudspeaker assembly designed for	2.	C-Ring
ease of installation, extremely wide coverage, and	3.	Support Rails
high-fidelity full-range sound reinforcement.	4.	Mounting Tabs
The SP400C is ideal for use in business music	5.	Attachment Screws
systems and foreground/background music applications.	6.	Backcan
Installing the SP400C is simple. The one-piece	7.	Terminal Cover Plate
assembly includes the backcan, mounting tabs	8.	Connector
(clamps), front baffle rim, high- and low-frequency	9.	Strain Relief
drivers, and our proprietary two-way waveguide based	10.	Seismic Safety Tab
on Mackie Designs award-winning HR824 studio	11.	Waveguide
monitors. Support rails are supplied that attach to	12.	Tap Selector Switch
the C-ring (included) and distribute the speaker’s	13.	Full-range/High-Pass Selector Switch
weight to the ceiling tile T-channels. A template is
also included for marking the correct cutout size.
The Phoenix-style connector on the back of the
assembly provides input and loop-through
connections for 70V/100V distribution systems, or
low-impedance operation. An easily accessible
rotary switch on the front panel selects the
appropriate tap (from 3.7 watts to 30 watts). A
second switch allows you to select among full-range
operation, high-pass (when used with a subwoofer),
and full-range low-impedance operation (16 ohms).
A plastic paint shield is provided that protects
the transducers so the front baffle rim and grille can
be painted to match the surrounding décor.

5. Attachment	4. Mounting
Screws	Tabs
	12. Tap Selector
	Switch
	8. Connector

	1
+		2
LOOP	+
THRU	IN	3
		–	4
		IN
		–
		LOOP
		THRU

(16 OHMS)	PASS	FULL	11. Waveguide
FULL
RANGE	HIGH	RANGE

9. Strain Relief

10. Seismic

Safety Tab

13. Full-Range/High-Pass

Selector Switch

7. Terminal Cover Plate

6. Backcan

1. Grille

2. C-Ring

3. Support Rails

SP400C – 3