OPERATIONAL NOTES
SWITCHING ON -- SOFT START
The MANLEY
1.Ensure that the
2.Turn on preamplifiers and all your source components and let them warm up for a minute.
3.Switch the
4.After a minute or so, or more if you like, engage the
5.The MUTE switch just prevents tunes coming into the amplifier. It grounds them out. UN- MUTE this switch if you had it on, turn up the volume on your preamp and enjoy.
6.To shut the amps off, you can flip the mains power switch down first, which will shut off power to the amplifier.
THE
After your listening session, if you wish to leave the amplifier in the
TRIODE / TETRODE OPERATION:
With the TRIODE / TETRODE switch, the amplifier may be set for TRIODE or TETRODE operation. When the switch is in the lower position, the amplifier is in TETRODE mode which will produce just over 250 watts in the 250 model, and, as you might expect, just over 500 watts in the 500 model. When the switch is in the upper position, the amplifier is in TRIODE mode which will produce about half the power of TETRODE operation. For some more demanding energetic music, large rooms, or for power hungry inefficient loadspeakers, you might find you will need the extra power of tetrode operation. Other times and other situations will find you very well satisfied with the sweet and seductive triode mode. One major rule applies for switching between triode and tetrode:
THE AMPLIFIER MUST BE TURNED OFF BEFORE SWITCHING BETWEEN TRIODE AND TETRODE!!!!
Follow turn on SOFT START procedure above when
TUBE LIFE
You should expect extended life from the tubes in your MANLEY 250's & 500's if you adhere to the procedures described above and check your bias at least once every
FUSES
The fuses used in your amplifier are standard 1/4" x 1 1/4"
8