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There are currently no product reviews.
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I received a good service manual, with good resolution. Improve the instructions for the purchase because they are not well understood.
For the rest, so good.
Thanks Angel.
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Very good documentation for the Grundig 2077 model (as well as similar 800/900/1000 series radios). The first two pages are a summary of reception specifications and output capability. The third page is the tuner dial indicator and dial cord routing diagram. the final ~5 pages are the schematics for the various models (including 2077). The scan quality of the schematics are good, adn can be easily read if zoomed in. The documents are in German, not English as stated. It would have been nice to have the tuning sequence and settings, and some trouble shooting materials... or component and wiring map.
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Perfect like it was descriped, Perfect like it was descriped
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Very good detail, all pages clear, exactly what I needed
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Excellent service, and just what I needed to service my TU-7700. All pages of the manual are clear and easily readable.
Technical Manual
Beta 50
ACOUSTIC & ELECTRICAL SPECIFICATIONS: � Nominal Impedance 8Ω � Max Amp Power 250 watts* � Frequency Response 35Hz � 20kHz (±3dB) 30Hz � 40kHz (�6dB) � Sensitivity 91dB (2.83V @ 1 meter) � Crossover Frequencies 600Hz, 3.3kHz; 18dB/Octave woofer; 12dB/octave mid/twt SYSTEM COMPONENTS: � Cabinet � Grille Black (for BLK) Grille Gray (for BE & CH) � Low-Frequency Transducer AURAL SWEEP TEST SPECIFICATIONS: � System Aural Sweep Test 6.0V Input 30Hz to 20kHz � L.F. Aural Sweep Test 5.0V Input 30Hz to 1kHz � M.F. Aural Sweep Test 4.0V Input 500Hz to 4kHz � H.F. Aural Sweep Test 2.83V Input 3kHz to 20kHz PHYSICAL SPECIFICATIONS: � Dimensions 41-5/16" x 10-7/16" x 14-11/16" (H x W x D) (1050mm x 265mm x 372mm) � Weight 62.5 lb (28.4kg) Each WARRANTY: � Refer to Warranty Statement packed with each product. * The maximum recommended amplifier power rating will ensure proper system headroom to allow for occasional peaks. We do not recommend sustained operation at these maximum power levels.
DC Resistance � Mid-Frequency Transducer
DC Resistance � High-Frequency Transducer
DC Resistance � Crossover Network
Beta 50 (Not for Sale) 351605-003 351605-004 Dual 8" (200mm) CMMD, � magnetically shielded 351509-001 7.9 ohms ±10% 5" (130mm) CMMD, � magnetically shielded 338568-001 4.4 ohms ±10% 1" (25mm) CMMD, � magnetically shielded 351572-001 3.5 ohms ±10% 351604-001
YEL +
BETA 50 WIRING DIAGRAM
HIGH-FREQUENCY TRANSDUCER 351572-001
+
PACKAGING
23 24 25 22
�
YEL/BLK
MID-FREQUENCY TRANSDUCER 338568-001
WHT/BLK �
WHT
GRN +
� BLK + RED � BLK + RED
LOW-FREQUENCY TRANSDUCERS 351509-001
�
GRN/BLK
GRN + CROSSOVER NETWORK 351604-001 GRN/BLK
�
6
BETA 50 SCHEMATIC
+
L1 2.7mH C1 68uf 100V L2 0.5mH 18.5" GRN 18.5" GRN 18.5" GRN/BLK
.250
22
LF INPUT
L.F.
.205
�
18.5" GRN/BLK
.205 .205
21
+
MF/HF INPUT
�
C2 30uf 100V
L3 .68mH
27.5" WHT/BLK C3 18.5uf 100V L4 0.72mH 27.5" WHT 29.5" YEL/BLK
M.F.
.250 .110
Legend on Page 2
C4 4.3uf 100V
L5 0.1mH 29.5" YEL
H.F.
.205
Infinity Systems, 250 Crossways Park Drive, Woodbury, New York 11797
Rev 1 8/04
Beta 50
.250
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