©2001 Marchand Electronics Inc. PO Box 473 Webster NY 14580 (585)872 0980 www.marchandelec.com
6
Assembly Instructions for the MB401 Kit.
Parts list.
Qu.
Description
1
MB401 board assembly
1
PS112 board assembly
1
chassis base
4
rubber feet
4
#6 x ½” selftap
1
front panel
1
front panel spacer
1
rear panel
3
heatsink
2
1.0” standoff
5
0.5” standoff
1
500VA x hardware
1
RCA connector
1
XLR connector
1
fuse holder
1
fuse, 6A slowblow
1
power entry connector
1
speaker terminal connector
1
DPST power on/off switch
1
DPDT slide switch
1
thermal cutout
2
handles
4
6/32 x 5/8” sockethead
1
resistor 2.4KOhm, 2W
2
#6 solder lug
2’
heatshrink 1/8”
1’
heatshrink 1/4”
7
8/32 x 1/2” socket head
16
8/32 x 1/2” panhead
23
#8 split lockwasher
7
6/32 x 3/8” flathead
5
6/32 x 1/2” flathead
1
6/32 x 1/2” black flathead
1
6/32 x 1/2” oval head
7
6/32 x 1/4” panhead
6
#6 kepsnut
5
#6 split lockwasher
6
4/40 x 1/2” panhead
2
4/40 x 1/2” flathead
8
#4 kepsnut
2‘
22 ga wire brown
2‘
22 ga wire red
2‘
22 ga wire orange
2‘
18 ga wire brown
2‘
18 ga wire red
2‘
18 ga wire orange
1/2‘
22 ga wire green/yellow UL
3‘
22 ga black UL
3‘
22 ga white UL
1
heatsink compound
1
line cord
1
Hex L-Key 3/32"
1
Hex L-Key 7/64"
1
Hex L-Key 9/64"
Assembly instructions.
Before assembling the MB401 amplifier complete the
assembly of the MB401 power amplifier board and the
PS111 power supply board.
Rear panel:
Remove the rear panel from the cabinet
before starting this assembly. Mount the following
parts to the rear panel:
1 DPDT switch
using 4/40 x 1/2" p kepsnut.
1 XLR connectors
using 4/40 x 1/2" p kepsnut.
1 RCA connectors, .
1 Pair of binding posts
1 Fuse holder
1 Power entry module.
using 4/40 x 1/2" p kepsnut.
1 Thermal cutout
using 4/40 x 1/4" fl kepsnut
Now mount the rear panel to the chassis using 5 6/32
x 1/2" flathead screws and kepsnuts. Note that the
chassis bottom has a large hole in the bottom. This
hole is used to mount the transformer. This hole
should be on the left side of the chassis, as seen from
the front.
Now mount the 3 heatsinks to the rear of the chassis.
Make sure all previous steps have been completed
because some screws can not be reached after the
heatsinks have been monted. Use 16 8/32 x 1/2"
screws for this. Do use split lockwashers on all 14
screws.
Front panel:
Mount the front panel and front panel
spacer to the chassis using the 4 6/32 x 5/8"
