Manley STINGRAY original version rev.2 6/2005 - 9/2009 MSTX - Manual (Page 12)

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LOOP RETURN- This input comes in after the Input Selector and just before the Stingray's
Balance and Volume controls. If you have all your sources going into another external
preamplifier, or even a Home Theater surround processor, then you could plug that preamp's
outputs here and let the Stingray just function as a stereo power amplifier when the Loop switch
is set to Loop Active. The Volume and Balance controls still function in this mode. The Loop
Send and Loop Return function as an insert point or effects loop, meaning you can insert
something like a crossover, equalizer, or you can even monitor off your tape deck's 3rd head
using the loop active switch as a tape monitor.
SUB OUT- This is a line level output after the Stingray's volume control. Use this output to
feed the input of your subwoofer amplifier. The signal level of the output follows the main
volume control in the Stingray so that if you change the volume control on the Stingray, your
external powered subwoofer amplifier will also track and change volume. Remember this is a
LINE LEVEL output, not a speaker output. If your subwoofer only has speaker level inputs on
it, then you need to drive it with the speaker outputs on the Stingray.
TRIODE / ULTRALINEAR SWITCH- This switch changes the configuration of the output
tubes and how the screen grids drive the output transformer. Triode mode hooks the screen
grids up to the output tubes' anodes and will give you around 20 watts. UltraLinear, also known
as "Partial Triode", connects the screen grids to the UL taps on the output transformer's
primaries and will yield around 40 watts of output power. Triode mode tends to give you a more
etheral and delicate sound while the UL mode has a more aggressive or punchy sound. Feel free
to experiment and pick whatever operating mode you like the sound of best in your system.
What will "sound best" really depends on your system and your room and your speakers and
your tastes and what you are looking for. We do not suggest you play with this switch all the
time. You should never switch up and down rapidly as there are high voltages on this switch
and you'll blow something up quickly by nervously fidgeting with this switch. we strongly
suggest you pick the setting you like best and just leave it there
INPUT INPUT
RETURN RETURN
LOOP LOOP
BYPASS BYPASS
LOOP LOOP
SUB OUTPUT SUB OUTPUT
VOLUME VOLUME
BALANCE BALANCE
INPUT INPUT
SELECTOR SELECTOR
SWITCH
SWITCH
TO STINGRAY TO STINGRAY
AMPLIFIER
AMPLIFIER
FLOW FLOW
ONE CHANNEL SHOWN ONE CHANNEL SHOWN
ACTIVE ACTIVE
LOOP LOOP
REC OUTPUT / REC OUTPUT /
LOOP SEND
LOOP SEND
STINGRAY SIGNAL STINGRAY SIGNAL