Magnepan MG 20.1 - Manual (Page 6)

8. FUSING
Your MG20.1's have been shipped with 3 amp fuses installed for the
tweeter, and 5 amp fuses for the midrange. The fuses are Type 3AG normal
blow fuses, and should never be replaced with slow blow fuses.
The maximum MIDRANGE fuse value shown on the speaker terminal
plate is 5 amps. Under no circumstances should you exceed this value, or use
slow blow fuses- doing so will invalidate your warranty.
"Clean" breaks of the ribbon foil are usually due to metal fatigue and may
be covered under the terms of the warranty. Twisted, distorted or limp foil is
usually caused by excessive power (from improper fusing), or sudden changes in
air pressure and may not be covered under the terms of the warranty.
9. CABLE HOOKUP
The MG20.1's feature high-current cable connectors which provide
optimum contact area with speaker cables up to 10 gauge. To prepare cables,
strip 1/2-inch of insulation from the end of the cable. Insert the bare wire into the
connector and tighten the set-screw with the Allen wrench provided. Spade lug
adapters are available from your Magneplanar dealer for speaker cables that are
incompatible with the Magneplanar high-current connector.
10. SINGLE AMPLIFIER OPERATION
For single amplifier operation an XO20.1 Passive Crossover has been
supplied with your speakers.
A. Angle brackets have been provided for attaching the XO20.1
Crossover to the feet of the MG20.1's. This will ease moving and
positioning the MG20.1's. Loosen top screws on back of feet, just enough
to slip angle brackets on. Align the 4 gold connectors on the crossover to
speaker inputs and place crossover on angle bracket. Tighten set screws.
B.
Connect the amplifier speaker cables to the input of the XO20.1
Crossover box.
C.
Every connection point on the XO20.1 Crossover is marked plus (+)
or negative (-). Make a choice as to which lead is either positive or
negative and make sure all connections are consistent with the marking.
DOUBLE-CHECK YOUR CONNECTIONS! One mistake will put your
system out of phase.