 |
As successor to the FT101A, one of the most sensitive, selective and sonically accurate FM tuners of our time, the MD-90 continues the tradition by re-defining state-of-the-art in analog FM tuner design. As did the FT-101A, the MD-90 combines the very latest in discrete, analog technology. Its highly renowned MOSFET front end provides 3 stages of very careful and precise amplification. Here even the most fragile of signals is strengthened and further defined by using highly effective "group delay" filtering. The result is a sonically correct audio signal, one that contains all the inherent richness and brilliance of the source being broadcast.
In addition to the features offered by its predecessor, the MD-90 now offers even greater selectivity in order to deal with urban signal congestion. The MD-90's in house manufactured 3-stage RF front end is sure to extract the most intricate signals from amongst the milieu of FM congestion that abounds in today's urban markets. Additional support is given through our custom Auto Blend RF circuit, which constantly monitors and varies your stereo separation insuring optimal "stereo quieting" during your listeing sessions.
The MD-90 now incorporates all functions in a totally redesigned motherboard. This integration has provided the necessary design efficiencies to allow consistently higher levels of selectivity to be maintained. Along with added selectivity, the MD-90 has a redesigned power supply circuit that maintains the tuner circuitry at standby at all times when the tuner is connected to a live AC source. The MD-90 can now also house the analog remote system (FTR) inside the chasis allowing for precise analog tuning through the optional infra red remote control. (sold optionally)
FEATURES AND BENEFITS:
| Dual, keyed automatic gain control (AGC) - Monitors and maintains program signal level and clarity, along with providing a dramatic reduction in interference from strong, local stations. | |
| BW 1/ BW 2 bandwidth control - Switchable to effectively control annoying sideband interference. | |
| Mute circuit - noise-activated with manual defeat switch. | |
| Auto Blend RF circuit - automatically monitors and varies stereo separation insuring optimal "stereo quieting" during your listening sessions. | |
| Stereo/Mono Mode - User switchable. | |
| Digital frequency display - Independent frequency counter derives input from tuner's local oscillator section and displays in soft, amber 0.5" LED numerals. |
Large, easy-to-read panel meters provide continuous monitoring of rf input level, multipath interference level and center-tune condition.
Frequency tuning is via a precision potentiometer which provides a precise, filtered voltage for the tuning varactors. Visual output is via the digital frequency display. The actual tuning mechanism consists of an ultra smooth, large, front panel control knob.
Function switching is provided through tactile, toggle switches.
WHY ANALOG?
In contrast with the frequency synthesis method of tuning, analog is not dependent on a digital microprocessor chip to establish the tuner's receive frequency. With analog, tuning is accomplished using specially-selected, discrete components in the tuner's critical "front end." In the Magnum Dynalab design, these components are selected and matched so that a unique balance of sensitivity, selectivity and sound can be maintained.
However, the most significant advantage in analog is that is delivers control into the hands of the user. With the MD-90, infinite tuning is available in order to establish maximum stereo separation or to detune slightly in order to minimize on-frequency noise. With frequency synthesis tuners, this capability is offered usually in fixed, 50KHz steps. While FM stations themselves are rarely found to be transmitting outside the +-2KHz standard, FM station signals that are rebroadcast over cable may not be quite so precise.
| SPECIFICATIONS | |
| Usable sensitivity (mono) | 10.3 dBf |
| Usable sensitivity (stereo) | 11.2 dBf |
| 50 dB quieting sensitivity (mono) | 13.2 dBf |
| 50 dB quieting sensitivity (stereo) | 34.0 dBf |
| Capture Ratio | 1.5 dB |
| Image rejection | 75.0 dB |
| signal to noise ratio (SNR) | 75.0 dB |
| alternate channel - wide | 60.0 dB |
| alternate channel - narrow | 80.0 dB |
| adjacent channel - wide | 9.0 dB |
| adjacent channel - narrow | 25.0 dB |
| THD - mono | 0.10% |
| THD - stereo | 0.18% |
| stereo separation | 50.0 dB |
| AM suppression | 70.0 dB |
| SCA rejection | -80.0 dB |
| -3 dB frequency response | 20 Hz - 17 KHz |
| Power required | 120/220/230/240 vac |
| Dimensions | 19" (w) x 13" (d) x 4.25" (h) |
| Weight | 12 lbs/5.3 kgs |
| Standard faceplates (black) | 17"/45 cm 19"/48.26 cm 19" rackmount |
| Tube Specifications For Triode Series | |
| Filament Current | (max) 330 mA (min) 270 mA |
| Anode Current (1) | (max) 1.07 mA (min) 0.92 |
| Anode Current (2) | (max) 1.07 mA (min) 0.92 |
| Total Harmonic Distortion | 1.8 % |
| * MD 106T and 102T, test sheets are included in the tube box. | |
PRICE=$1,595.00 USD
| The PRECISION ANALOGUE REMOTE SYSTEM |
Is now available as an option on all production Magnum Dynalab tuners, receivers and as an update to all previous Magnum Dynalab tuners and receivers.
|
This extremely accurate and silent remote system was developed in conjunction with engineering support from Texas Instruments and Archronix Corporation of Toronto, Ontario. The remote utilizes TI’s latest 16-bit ultra low power processor with 60 KB flash memory, 2048 bytes RAM, 125-ns instruction cycle time, 12-Bit A/D converter with internal reference, Sample-and-Hold and auto-scan, Dual 12-Bit D/A converters, 16-Bit timer_A with three capture/compare registers, supply voltage supervisor/monitor and numerous additional features. Needless to say this is the most accurate tuning system ever found in a Magnum Dynalab tuner as the resolution exceeds even that of our precision tuning potentiometers with no potential for performance degradation due to mechanical wear. The user can switch between manual and auto tune simply by turning the remote control off with the hand-held. Future software upgrades to this system will include an auto alignment feature to compensate for deviations as components age or operating parameters change. Presets are maintained in a non-volatile flash memory in case of any power interruption. Price: 250.00 USD |
Also available in 220 and 240VAC with either North American or European FM deemphasis. North America deemphasis is provided if not specified otherwise.
Faceplate - Available in 17 3/4" black and 19" black and 19" rackmount.(standard) Option Available - Kimber wiring in significant signal paths-improves detail and high frequency extensionPrice - $175.00 USD
Option Available - Balanced Audio Outputs Price - $100.00 USD
The MD-90 utilizes a direct trickle down technology found within our flagship tuner, the MD-108 tuner.
We feel that you should not sacrifice the great sound received from your tuner in order to obtain the convenience of a remote control.
silver and gold anodized finishes.(optional) - Price - $100.00 USD
