SATRI AMPLIFIER AMP-51R Owner s Manual
contents SAFETY INSTRUCTIONS 4 INTRODUCTION 6 OVERVIEW (FRONT PANEL) 8 OVERVIEW (REAR PANEL) 9 OVERVIEW (REMOTE CONTROL) 1 1 OPERATION 12 TROUBLESHOOTING 13 SPECIFICATION 14 WARRANTY 15
SAFETY INSTRUCTIONS All products from Bakoon International are strictly designed and manufactured to meet the most rigid safety standards. It is important that owners should follow the below instructions to avoid any possible damages. 1. Instructions Thoroughly read through and follow all the safety instructions stated below before operating or installing any items. It is also important that you retain the instructions for future reference. 2. Placement Place the product on a rigid rack or shelf specified to support the weight of the product. Failure to do so may result in the shelf breaking, tipping or the product to fall with the risk of causing serious material and personal injury. 3. Ventilation The product needs proper ventilation to ensure reliable operation. Do not place the product in an enclosed, non-ventilated area such as in a bookcase or closed rack, and on a soft surface such as sofa or bed. 4. Heat Do not use the product near flames, any heating appliances such as radiators, stoves or any other audio amplifiers. 5. Water and Moisture Do not place the product near any water such as flower vases, air conditionings or any installations of running water. Also, you may not pour into nor use any kind of liquids on the product. 6. Cleaning Disconnect the main plug before cleaning. Clean the product only with a dry, soft, lint-free cloth or a vacuum cleaner. Do not use any liquid or chemical cleaners. 7. Power Sources The product must be connected to the type of power source specified in the marking labels found on the packaging box or on the back of the product. Do not modify the supplied power cable in any way. Do not overload wall outlets, receptacles or extension cords. Do not place the power cable where there is a risk that it will be walked on, pinched, bent, exposed to heat or in any way damaged. 4
8. AC Power Connection The product must be connected to the power outlet only with the power cable that meets safety standards. Do not damage or modify the products AC inlet connector or power cable in any way. Do not overload wall outlets, receptacles or extension cords. Please refer to the marking label for its AC input specification. Failure to do so will result in serious damage to the product or the user and will void the warranty. 9. Damage Requiring Service The product should be serviced by qualified service personnel if: The power supply cable or plug has been damaged. Objects have fallen or liquid has been spilled into the product. Caution: You should never open the product in order to prevent electric shock. Warning: Do not place the product near any water such as flower vases, air conditionings or any installations of running water. Also, you may not pour into nor use any kind of liquids on the product. There is a risk of electric shock. The product has been exposed to rain or water. The product does not operate normally or exhibits a clear change in performance. The product has been dropped or damaged in any way 10. Service You should not attempt to service the product by yourself nor may it be serviced by any unauthorized service personnel. Always contact your dealer to arrange servicing. Failure to do so will void the warranty. Caution: The product requires to be installed in a well ventilated area. The product is designed to dissipate heat through all of its surface areas, thus requiring at least 20 cm space on all sides. Do not stack the amplifier directly on top of or below other products. 5
INTRODUCTION Congratulations on becoming a happy owner of the SATRI AMP-51R. The AMP-51R is our finest achievement to date, our next generation flagship amplifier, born from years of experience and expertise in SATRI Circuit technology. Created with the highlighted features described below, the AMP-51R ensures the best quality of music reproduction possible. The All New Flagship SATRI Circuit The AMP-51R uses our top-of-the-line SATRI-IC-UL and the latest generation bias control circuit with a more stable current source circuit that enhances the output stages performance. The circuit is further enhanced by greatly reducing the signal paths and interference between the components. The latest high power MOSFETs from EXICON are implemented together with the exclusive driver circuit which enables a more stable output stage performance. Advanced Control Circuit An all new control circuit contributes to the AMP-51R s stability by automatically protecting itself from AC input changes, DC output and high temperature. It also detects the voltage fluctuations and controls the power supplies accordingly, so that the amplifier runs from a stable power supply at all times. An OLED display shows all the current status of the AMP-51R, and all operation of the unit is done by two hidden knobs underneath the front panel or with the remote controller. Ultra Precision Stepped Attenuator Circuit The Ultra Precision Stepped Attenuator is implemented for the first time in a Bakoon amplifier, with only the best available high precision resistors with 0.1% tolerance and 25 PPM/ C temperature coefficient. The circuit is completely controlled by the microprocessor unit (MPU) and it can be set in 50 steps, ensuring the best possible channel balance and signal purity. Ultra Low Noise Power Supply Three separate power transformers are used for the input stages, output stages and control stages. For the first time in a Bakoon s amplifier, a custom-made transformer from Plitron, boasting the lowest possible noise level. The power supply circuit also employs separate ultra-low noise regulator circuits to provide reliable power for the AMP-51R s high precision circuits. 6
Extreme Mechanical Engineering Bakoon s expertise in mechanical engineering delivers a precise, yet beautifully finished case design both inside and out. In order to transfer heat from the circuits more efficiently, there are two CNC machined copper heatsink blocks inside. Also, various heatsink patterns are machined throughout the exterior surfaces. The case itself is stabilized by three isolation feet, designed and positioned from meticulous calculations for the best anti-vibration performance. Packaging Inside the packaging box, you will find the below contents; AMP-51R Amplifier Remote Controller Remote Controller Battery Replacement Toolkit Owner s Manual / Safety Instruction A Pair of Gloves The original packaging box has been created to carefully protect its contents. Please do not throw away the box in case of possible shipments in the future. 7
OVERVIEW (FRONT PANEL) INPUT SELECT Underneath the front panel, there is a knob with which you can switch between and select input sources. Rotate it left or right swiftly, but gently, to change the input. During the input change, the gain level is automatically changed to zero (mute), after which it is then returned to its last position step. POWER & GAIN The power and gain control is combined with one single knob. With the AC power cable plugged in, the AMP-51R goes into standby mode with a separate standby transformer inside the unit. In standby mode, rotating the knob swiftly to right will turn on the amplifier and rotating it further to right will increase its gain level (or volume). Rotating it to left will decrease its gain level and at the minimum gain level, or step 0, rotating it swiftly further to left will turn off the unit and put the amplifier back into standby mode. Remarks: The latest generation bias circuit inside the AMP-51R stabilizes its bias level during the initial turn-on period for about 12 seconds. During this period, the AMP-51R is in mute mode with no signal output. OLED DISPLAY The OLED display, will always display the current status of the AMP- 51R s, and any changes made, the given text will show up at the display. Also, should the AMP-51 enter into any protection mode, such as problems from output DC, AC input or high temperature, this will also be shown on the display. IR SENSOR The small IR sensor located next to the OLED display receives the remote controller s signal. Be careful not to block its way. 8
OVERVIEW (REAR PANEL) AC POWER INLET The AC POWER INLET contains an AC power receptacle (IEC standard) and a fuse holder. Securely connect the AC power cable here. When replacing the fuse, be sure to use the same type and value specified on the marking label. MARKING LABEL The MARKING LABEL is located under the power inlet. It describes AC main voltage, power consumption, fuse type and value. Make sure you check this label carefully before the installation. Remarks: The AMP-51R incorporates an AC voltage sensing circuit that detects incoming AC voltage and its according DC output to automatically help select the AC transformer primary inputs, during the start-up and when it s running. This ensures the best performance at any given AC condition, but if the AC voltage is either too low (less than 10%) or too high (higher than 5%), the AMP-51R s protection circuit will automatically turn off the amplifier. LOUDSPEAKER OUTPUT When playing in the stereo mode, you can connect a pair of loudspeaker cables to the connectors according to + and markings. When playing in mono mode (with two AMP-51Rs), the right channel s + becomes its mono + output and the left channel s + becomes it mono output. Be careful not to touch and make contacts between any of these connectors during the installation, as this would pose a risk of damaging the amplifier and the loudspeakers. 9
OVERVIEW (REAR PANEL) INPUT (STEREO) There are two sets of conventional voltage inputs (RCA) and two sets of SATRI-LINK inputs (BNC). Conventional source components are compatible with the RCA voltage inputs. The SATRI-LINK is used exclusively for source components by Bakoon. Remarks: SATRI-LINK is a current signal transfer method between electronics. It can transfer the signals at very long distances and the input signal goes directly into the SATRI Circuit without any loss in signal quality. INPUT (MONO) The AMP-51R can be converted to play in mono mode. During its mono mode, the XLR connector is used for any conventional balanced voltage source and two BNC connectors, namely the SATRI-2LINK, are used for Bakoon s source with balanced current output. In mono mode, the AMP-51R s gain level is fixed, requiring that any connected sources in turn are equipped with a volume controller. (Alternatively through a preamplifier) Remarks: The XLR connector s pin 1 is ground, pin 2 is hot and pin 3 is cold. Remarks: Do not connect any stereo inputs during the mono mode. 10
OVERVIEW (REMOTE CONTROL) POWER The POWER button turns on or off the product. DECREASE GAIN A short click decreases the AMP-51R s gain level by one step and holding down the button MUTE & SELECT decreases the gain level continuously. During the AMP-51R s operation, a short/quick click on this button s mutes the amplifier, while INCREASE GAIN holding down the button a little longer changes A short click increases the AMP-51R s gain level the inputs. When the AMP-51R is in its stand-by by one step and holding down the button mode, you can push this button for about 5 increases the gain level continuously. seconds to enter into mode change mode. In this mode, the button s short click changes to Remarks: The remote controller contains two Stereo Variable, Stereo High Gain, Stereo Low AAA batteries. In order to change the batteries, Gain, Mono High Gain and Mono Low Gain. In you must unscrew four hex bolts on the any of these modes, you can push the button backside with the supplied tool, and replace the for about 5 seconds to select the mode you two AAA batteries inside. want. Remarks: When in mode change, remove all the input and output cables as it is possible that they can damage the unit. 11
OPERATION Making Connections Please turn off the power of the AMP-51R during any set-ups. 1. AC Power Securely connect the AC power cable to the IEC socket in the back panel and to the wall outlet or receptacle. It is not recommended to use extension cables. 2. Input Sources Securely connect a pair of conventional RCA interconnect cables from any voltage source equipment to the RCA connectors located at the back panel. It is strongly recommended that any source equipment from Bakoon should be used with SATRI-LINK. During the mono mode, you can use the XLR connectors and a pair of BNC connectors for balanced SATRI-2LINK. Remarks: Do not connect any voltage source to the BNC input connectors as this may result in severe damage of either the AMP-51R and/or the connected speakers. 3. Speaker Output Securely connect a pair of loudspeaker cables from the output connectors located at the back panel of the AMP-51R to the loudspeakers. It is important that you match the polarity of the loudspeaker. Listening After you have successfully installed all the connections, you are now ready to turn on the AMP-51R to start listening. Please follow below steps to protect against any possible accident or damage. 1. Please ensure every connection AC power, signal input and loudspeaker output is properly connected. 2. Turn on the source equipment first. 3. Turn on the AMP-51R by the front panel s knob or the remote controller. 4. You can check the current status from the OLED display. 5. Select the desired input. 6. Play the source equipment. 7. Slowly rotate the gain knob to the right or use the remote controller to increase the gain level. 8. Please set your desired the gain level. 9. To turn off, you may follow the above steps in the reverse order. Remarks: Be very careful not to touch the loudspeaker cable connectors or bare wires against each other during operation. It may result in failure of either the AMP-51R and/or the connected loudspeakers. 12
TROUBLESHOOTING The AMP-51R is designed to protect itself from situations where it can damage the amplifier and circuits severely. The status is always shown on the OLED display. Otherwise, if you encounter problems with your AMP-51R, please check the lists below before contacting your dealer for service. No Sound on Both Channels, Check If You have correctly selected the desired input, and whether the output connections, and their cables are securely connected. The source component is working properly. The speakers are working properly. Sound Stops Suddenly, Check If You have placed the AMP-51R in a well-ventilated area. You have properly connected the output connectors and they are not touching each other. You can check the protection mode status on the OLED display. The gain knob is turned to the desired gain level. The power supply cables are securely connected. No Sound on One Channel, Check If Input and output cables are securely connected to both channels. The same channel is not outputting any sound after switching left and right interconnect cables - check the source component for failure. The same channel is not outputting sound after switching left and right speaker cables - check the loudspeaker for failure. 13
SPECIFICATION 14 * Remarks: Bakoon International reserves the right to change its product specifications at any time
WARRANTY Bakoon International provides parts and labor free of charge for any manufacturing defects during the first two years after purchase, and six months for consumables such as battery. The warranty is not transferrable and is limited to the original purchaser in the country of purchase, provided that the product was purchased from an authorized dealer. Please keep a copy of the sales receipt to verify such conditions. 15
BAKOON INTERNATIONAL CORP. URL: www.bakoon.com EMAIL: info@ bakoon.com