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power cord! Please retain the packing materials for future use and store in a cool, dry place. Should your TIGRIS ever require
service at the factory, it is mandatory to ship the amplifier in the original packing materials to prevent in-transit damage. Also, should
you change your living quarters, you’ll be glad to have this packing to protect your investment from the hazards of moving.
The ideal location for the TIGRIS would result in the shortest lengths of speaker cable and interconnects. If you have to favor one
over the other, we recommend keeping the speaker cable as short as possible. Being a Class A biased vacuum tube device, the
TIGRIS produces considerable heat. Care needs to be exercised to insure proper ventilation. If the surrounding area includes
objects, shelving or cabinetry, you should check temperatures after initial use to insure that nearby materials remain cool to the touch.
Do not remove the rubber feet. This would rest the amplifier directly on the bottom panel and prevent airflow to the transformers
which could cause serious damage due to overheating. If you plan to experiment with cones or tiptoes, place them under or next to the
rubber feet. The later option temporarily bypasses the factory-supplied footers and allows you to evaluate the sonic results of the
aftermarket cones. If you plan to place the TIGRIS directly on a carpet, insert a slab of stone between it and the carpet, especially
if your floor covering has long fibres - otherwise even with the rubber feet, airflow will be restricted. The top shelf of a medium-height
equipment rack would be the most ideal placement. If you decide on an enclosed location, make sure you leave room for adequate
ventilation or install a temperature-sensing whisper fan.
Once you have determined your optimum location for the TIGRIS, proceed to connect your speakers to the four-way binding posts
on the Rear Bay. These binding posts are identical to those used on the BARON amplifier and some of the finest available. Do not
connect the power cord yet!
You’ll notice three posts per channel. The red center post is the Ground
/ Common, the grey the 8 Ohm tap, and the black the 4 Ohm tap. Be-
cause the TIGRIS inverts phase, you must use either the 8 or 4 Ohm
post for the ground lead, and the center post for the hot lead. This is why
the center post features the red marking as a visual reminder!*
However, use the common method on the speaker terminals - reverse
the hot-ground only on the amplifier terminals. On most speaker cable,
hot is referenced with the color red or “+” markers, and ground with the
color black, white or “-” markers. If your identifications are different, don’t worry. Merely insure that you reverse your connections on
the amplifier, not the speaker end - do not use the same lead for hot on both sides. If you make a mistake, your speakers will be wired
out-of phase. This does not cause any damage, but can make some recordings sound less than optimal. If you accidentally wire one
speaker in-phase, the other out-of-phase, you will experience partial cancellation in bass output. This is easily remedied by re-
connecting the speaker cable properly.
* If you have a CD-only system and your CD player or separate D/A converter offers a phase switch, you can compensate for the
phase rotation of the TIGRIS by selecting the 180 ° setting. You could then maintain the usual practice for speaker connection and
use the red common terminal of the TIGRIS for the ground lead of your speaker cable. Don’t use both 8 Ohm and 4 Ohm posts
together, not even for bi-wiring!
How should you determine which tap to use, 8 or 4 Ohm? Mathematically, it seems a given that a speaker with a nominal 4 Ohm
rating or lower should be connected to the 4 Ohm tap. However, experience indicates that sometimes a connection to the 8 Ohm tap
Chapter 3 INSTALLATION:
3-1 UNPACKING:
3-2 LOCATION:
3-3 SPEAKER BINDING POSTS:
NEGATIVE
FEEDBACK
4 OHM COMMON 8 OHM