Magnum Dynalab MD 90T/90TR ANALOG FM TUNER INSTRUCTION MANUAL
-2- TABLE OF CONTENTS A MESSAGE FROM THE PRESIDENT 3 UNPACKING YOUR MD 90T 4 SETTING UP YOUR MD 90T 5 CONTROLS AND FUNCTIONALITY 6 DISPLAYS AND METERS 6 IMAGE OF MD 90T 7 CHECKING OUT YOUR MD 90T 8 TUNER REMOTE (OPTIONAL) 9 IMAGE OF RC1 REMOTE 10 TROUBLESHOOTING 11 RECEPTION TECHNIQUES 12 Antenna Cabling: 12 Types of Antennas: 12 FM RECEPTION AIDS AND ACCESSORIES 13 PRODUCT SPECIFICATIONS 14 SAFETY SHEET 15 LIMITED WARRANTY 16
-3- A Message From the President Thank you for choosing the Magnum Dynalab “MD 90T” FM Tuner. Great care has been given in the design, manufacturing and selection of components for the “MD 90T” FM Tuner. This complete process will insure that your listening experience will be optimized for years. The front end of all Magnum Dynalab tuners is an exclusive “in house” designed and manufactured component, we are the only company in the world that does their own R.F. “Front-end”.
-4- UNPACKING YOUR MD 90T Carefully inspect all sides of the shipping carton for damage. If there are marks or holes in the carton make note of the location in relation to the unit inside. Any obvious dents or scuff marks should alert you to the possibility of damage. Carefully remove the MD 90T from the end caps and wrapping, inspect all sides. Pay special attention to the corresponding areas on the unit where damage was found to the shipping carton.
-5- SETTING UP YOUR MD 90T 1. Place your tuner the shortest distance possible from your pre-amplifier/ integrated amplifier, being careful to avoid areas that may cause extreme temperatures. 2. Connect your tuner to the pre-amplifier, using cables/ inter-connects that are consistent with the rest of the inter-connects in your system. For a single ended (un-balanced) system the cables will be connected to the RCA connectors labeled “unbalanced out” on the rear panel of your tuner to an unused aux.
-6- CONTROLS AND FUNCTIONALITY (Letters correspond with image on the following page) A. POWER – Turns the power (AC) on and off to your tuner, with the optional remote system this switch must be left in the “OFF” position. B. STEREO – Switches your tuner from Stereo to Mono and vice-versa. Switching to Mono will often clean up noisy stereo transmissions and aid in delivering quiet listening to weaker signals. C. I.F.
-7H. SIGNAL STRENGTH METER – The signal strength meter indicates the strength of your incoming FM signal, the higher the better. This meter is calibrated to never hit 10, this is done to protect the meter mechanism. I. FREQUENCY DISPLAY – Displays the station via a numeric value, the frequency that your tuner is dialed into. Display ranges from 87.5 MHz through 108.5 MHz. This readout is controlled by the tuning knob.
-8- CHECKING OUT YOUR MD 90T 1. Place your power switch to the “ON” position (A on diagram). This should turn on your tuner’s meter lights and frequency display. 2. Place your STEREO/MONO switch (B on diagram) to the Stereo setting. 3. Place your bandwidth switch (C on diagram) to BW1. 4. Place your Mute switch (D on diagram) to “ON” position. 5. On your preamplifier/ integrated amplifier select the input that your MD 90T tuner is connected to. 6.
-9- TUNER REMOTE (OPTIONAL) If your tuner was ordered with the RC1 “PRECISION REMOTE SYSTEM”, here are the operating instructions. 1. The power switch should be off on the front panel of the tuner 2. Using the remote handheld, push the “POWER ON” button. You will see the tuner turn on. 3. To tune with the handheld, push and then hold either the “TUNE UP” or “TUNE DOWN” button until you reach the desired station. The longer you hold the button the faster the frequency changes.
- 10 - IMAGE OF RC1 REMOTE
- 11 - TROUBLESHOOTING PROBLEM POSSIBLE CAUSE POSSIBLE SOLUTION No sound, meter lights are not on No sound, meter lights are on • Power cord disconnected • Power off at source • Interconnect not properly installed • Preamp set to incorrect source • Preamp set to tape monitor source, if preamp has such a function • Power amplifier is off • Tube failure • Antenna not connected properly • Incorrect antenna • Connect power cord • Check AC source • Verify installation of interconnects • Turn preamp to inp
- 12 - RECEPTION TECHNIQUES Antenna Cabling: The lead-in cable from the antenna is often the weakest link in the system. Some time spent on selection and matching will yield dramatic results when it comes to noise reduction in weak signals. A good grade of 75 ohm coaxial cable will provide very sufficient signal passage, along with effective shielding against interference. Without effective shielding your coaxial cable can in fact become an antenna in itself.
- 13 - Magnum Dynalab offers the MD ST-2, an excellent vertical ½ wave antenna Folded Di-Pole - This is the most common and simplest of all antennas, most people are familiar with the 79 cent piece of wire you received with most electronics gear (generally provided with a tuner or receiver). This piece of wire is bi-directional and the performance of it is affected by the angle that the signal hits the piece of wire.
- 14 - PRODUCT SPECIFICATIONS Usable sensitivity- Mono – 0.7 uV 9.0 dBf 50 dB quieting – Mono – 2.0 uV 9.9 dBf 50 dB quieting – Stereo – 2.3 uV 25.0 dBf Capture ratio – 1.5 dB Image rejection – 110.0 dB Signal to noise ratio – 80.0 dB Alternate channel – Wide – 40.0 dB Alternate channel – Narrow 70.0 dB Adjacent channel – Wide – 3.0 dB Adjacent channel – Narrow 35.0 dB THD – Mono – 0.10 % THD – Stereo – 0.18 % Stereo separation – 50.0 dB AM suppression – 70.0 dB SCA rejection – 80.0 dB IF rejection – 80.
- 15 - SAFETY SHEET IMPORTANT SAFETY INSTRUCTIONS 1. 2. 3. 4. 5. 6. KEEP THESE INSTRUCTIONS HEED ALL WARNINGS FOLLOW ALL INSTRUCTIONS DO NOT USE THIS APPARATUS IN WATER CLEAN ONLY WITH DRY CLOTH DO NOT BLOCK ANY VENTILATION OPENINGS, INSTALL IN ACCORDANCE WITH THE MANUFACTURER’S INSTRUCTIONS. 7. DO NOT INSTALL NEAR ANY HEAT SOURCES SUCH AS RADIATORS, HEAT REGISTERS, STOVES, OR OTHER APPARATUS (INCLUDING AMPLIFIERS) THAT PRODUCE HEAT. 8. DO NOT DEFEAT THE SAFETY PURPOSE OF THE GROUNDING TYPE PLUG.
- 16 - LIMITED WARRANTY Register your product at www.magnumdynalab.com Magnum Dynalab Ltd. herein referred to as the “manufacturer” guarantees this product to be free of defect in both material and workmanship and agrees to remedy any such defect or replace any defective component at no charge for a period of two years from date of sale to the first end user.
