CONTENTS INTRODUCTION......................................................................................................................3 MAINS CONNECTIONS..........................................................................................................4 CONNECTING YOUR STINGRAY..........................................................................................5 FRONT & BACK PANELS.......................................................................................................
INTRODUCTION THANK YOU!… for choosing the Manley Stingray II integrated amplifier for your loudspeaker driving requirements. You possibly chose this product because you auditioned it in a store or heard it at a hifi show and were impressed with the sound. It may have been the right combination of price, power, features and styling for you. It may have been because you know the Manley Labs reputation for quality, reliability, and integrity.
MAINS CONNECTIONS Your STINGRAY II has been factory set to the correct mains voltage for your country. The voltage setting is marked on the serial badge, located on the Right-Back of the unit, just above the Right-channel inputs. Check that this complies with your local supply. Export units for certain markets have a moulded mains plug fitted to comply with local requirements.
Connecting Your Stingray II Setting up this integrated amplifier is rather easy. Please refer to pages 8 & 9 for pictures of the back and sides of the Stingray II. 1. You will be connecting power last and turning the system on after all other connections are made to prevent ugly noises as wires are connected and to prevent possible damage to the amps and speakers. In general, it is best to make any connections with the power off, the unit in “Standby” mode, or the volume control turned all the way down.
8. To select one of the RCA inputs on the back of the unit or the 1/8” input on the Left-Front, use the Input Selection knob on the left side of the faceplate. The LEDs around the knob will tell you which input is selected. For more information on this knob, see page 9. 9. To adjust the volume of your Stingray II, simply turn the Volume/Balance knob on the right side of the faceplate. To adjust the L/R balance, push this knob and hold it in for 2 seconds - then you are in Balance Mode.
INPUTS, OUTPUTS, & THE STUFF ON THE SIDES INPUTS: Any of the three sets of stereo INPUT jacks can be used with any unbalanced RCA audio analog outputs from your source components. They are electrically identical and only differ in the numbers screened onto the chassis. If you have balanced outputs on your source gear, check with the manufacturer on how to best interface them with unbalanced loads.
LOOP RETURN: This input comes in after the Input Selector and just before the Stingray II’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 II just function as a stereo power amplifier when the Loop is active (see the previous page for more information). The Volume and Balance controls still function in this mode.
DETAILED FRONT PANEL FUNCTIONS INPUT SELECTION KNOB: This knob, located on the left side of the faceplate, controls several functions. Upon startup, it defaults to its basic function of changing the input on your Stingray II. The selected input is visible according to which of 4 LEDs are lit on the knob itself. For example, seeing a lit LED at 9:00 on the knob means that Input 1 is selected. Seeing an LED at 10:00 means Input 2 is selected, and so on and so forth.
Display Menu Functions The Display Menu is the second of the two Menus on the Stingray II. To access the Display Menu, press both the Input Selection and Volume/Balance knobs at the same time. When all three red LEDs (Insert, RF, & IR) on the Input Selection knob illuminate, release the knobs. The Insert LED will blink while in the Display Menu. To cycle through the four options in the Display Menu, rotate the Input Selection knob.
OPTIMIZING YOUR SOUND SYSTEM This section is full of little hints that may help you get the most out of your stereo - and it may not cost anything or cost very little. Probably, you know most of this, but hopefully some of it may be new or refresh your memory or just be refreshing reading in a manual. A very important factor is your speakers. Hopefully you have good speakers and they are appropriate for this integrated amplifier.
You may have bought a great system but there is a good chance that you are only getting a fraction of its potential. Very frequently we have experienced top quality electronics sounding unimpressive simply because acoustics were ignored. Even amongst studio engineers, few can really tell the difference between good speakers in a bad room and bad speakers in a good room - but they all know good speakers in a good room and very likely so do you.
TUBE F.A.Q. A few general all-too-frequently-asked vacuum tube questions from the manleylabs.com F.A.Q. as found on our website are answered here in case you don’t have internet access (which we don’t doubt because after all you bought vacuum tube amplifiers, didn’t you?): (Don’t take that comment personally. EveAnna still drives air-cooled Volkswagons...) FAQ #16. Do you sell tubes? I don’t know what you’re talking about. FAQ #16a. I need to retube my Manley amplifier. Do you sell tubes? Sorry.
FAQ #16g. But it sounds different when you first turn it back on. What is the warm-up time for this gear? We generally recommend 45 minutes warm-up time for everything to reach operating temperatures and sound like it’s supposed to. It will reach “listenable” temperature, however, in just a few minutes. FAQ #16h. What about break-in time for new gear? We burn in the gear for a couple of days before it is shipped out. Folks report that after about a week of break-in that it sounds better.
What do I do? The amp should be well warmed up (30 min.) and no music playing. Set the meter to read DC volts. The meter has two test leads, red and black. Put the black lead in the black terminal on the top marked TPG (ground) or touch the metal point to the steel chassis (but not a painted or anodized part). Put the red lead in the first red terminal marked TP1. The meter should read either .25 V or 250 mV(same thing). If it doesn’t you need to adjust BIAS 1 trimmer until it does.
REMOTE CONTROL Your Stingray II is equipped with a Remote Control that communicates with the amplifier via RF (radio frequency) and/or IR (infrared) signals. In the Stingray II’s Menu Mode, you can alter these transmission settings (to learn how to do that, see page 9). RF signals can pass through walls, so now you can operate your Stingray II from Anywhere In Your House!! We’re finally catching up with the last century. This Remote can control almost all functions of your Stingray II.
TROUBLESHOOTING It is rare that any of these problems occur, but here are some things to try if something is “wrong”: HUM - Try a mains ground adapter if they are legal in your country. They are also called 3 pin to 2 pin adapters (or “cheaters”) and are available in hardware stores. There should be one ground in your system and only one. If two or more pieces of gear have 3 pin AC cables a ground loop can occur which will usually cause hum.
CREDITS An EveAnna Manley Production Directed by: Humberto Rodriguez Mastered by: Baltazar Hernandez Titled by: J. Gordon Holt Fancy Lights/Coding/Anti-Spam Assistant: Advice/Helpful Hints/Sushi Companion: Remote Control Abuser/Field Tester/Production Staller: Manual Labor/Stunts: Jerry Garszva Mitch Margolis Ryan Kato Chris Dauray - The Legend of The Stingray It all began at the HI-FI ‘97 show. We find the protagonists of this tale seated comfortably at the bar, of course - J.
SPECIFICATIONS - 3 x RCA Line Inputs, 1 x 1/8” Line Input (front panel) - TRIODE - UL Switching - RECORDING OUT - SUBWOOFER OUT - TAPE LOOP (Insert) with Bypass switch - Logic controlled Volume and Balance functions - All-Vacuum Tube Lo-feedback Stereo Integrated Design - Output Tubes: 8 x EL84 - Ships with Russian NOS EL84M (aka 6Pi14Pi-EB) - Driver Tubes: 2 x 6414 - Ships with GE or RAYTHEON JAN NOS USA or 6414W - Input Tubes: 2 x 12AT7EH - Ships with: 12AT7EH large plate Electro-Harmonix Russian - Maximu
FCC INSTRUCTION TO THE USER This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
