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PDF Contains
Technical Data, Mechanical data, Detailed Circuit diagram with components value, PCB layout. Actual PCBs Print. Component List, Spare parts code list and Input output detail. It cover LBB1211, LBB1212, LBB1213, LBB1216, LBB1217.
It is the actual Service Manual for SQ10
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very good manual with clear electrical schemes. Very helpful to find wat was wrong inside my microwave.
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Hi, thankyou for providing the Nordmende Globetrotter original manufacturer's repair manual. Quality is very good and sharp - the PDF file was comfortably small to download. The only question is: why did it take so long to become ready for download?? Many thanks anyway, I fixed the fault in the radio thanks to the circuit.
regards: Nick
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This was super service.Ordered this manual and was reading the download an hour later
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as always, rapid and efficient, very good and clear prints
details clearly visible keep going this way!!!!!!
Power Amplifier
Reference 610a/611a
INSTALLATION AND SETUP (CONT.)
SETTING DBO™ The Dynamic Bass Optimizer (DBO) is used to enhance low-frequency reproduction in a vehicle. Conventional bass-boost circuits only increase bass at a fixed frequency, and cause the amplifier to consume considerable power. The DBO allows you to adjust the frequency (20Hz – 80Hz) as well as the boost level (up to 12dB; see Figure 14), allowing you to fine-tune the bass in your system to optimize performance. For sealed enclosures, the DBO can be used to enhance the lower bass region of sealed enclosures. For bigger/fuller bass, adjust the HP FREQ between 35Hz and 45Hz; adjust the BOOST control according to your preference. For tighter-sounding bass, adjust the HP FREQ between 45Hz and 55Hz; adjust the BOOST control according to your preference. For vented enclosures, the DBO should be used as a subsonic filter to reduce overexcursion of the woofers. Set the HP FREQ control 10Hz below the tuning frequency of the enclosure (e.g., 25Hz for a box tuning of 35Hz); adjust the BOOST control to taste. This will conserve amplifier power typically wasted on frequencies below the tuned frequency of the enclosure. For infinite-baffle applications, set the HP FREQ to the speaker’s Fs value (reducing overexcursion of the woofer); adjust the Boost control to taste. Figure 14. Frequency-response curves show typical DBO control ranges.
DBO HP FREQ Control
(adjusts cut-off frequency)
dB 0 -3 -6 -9 -12 20 80 Freq. (Hz)
20Hz 100Hz
STATUS LEDs Clip: Indicates the amplifier is being overdriven, and your speakers may be in danger. This should blink only on musical peaks, and not be on constantly. Power: Indicates the amplifier is on. Protection: Refer to “Troubleshooting” for specific indications. Figure 15. LED status.
HP FREQ
DBO BOOST Control
(adjusts boost amount at cut-off frequency)
dB 12 6 0 -6 -12 20 80
BOOST
MIN
MAX
Freq. (Hz)
6
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