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Excellent!! Got what I need and very fast!! Thank You
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Manual acquired with good resolution, complete in all its pages, very good policy of the folder where are saved all products purchased.
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Service manual very complete and clear. It was very helpfull for my work.
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This is the 2nd time I download manuals from this website and I can say it's what I was expecting. It contains schematic, layout (decent quality), short description, parts and dissasembly instructions. I recomend it for anyone who wants to repair/modify this device.
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Very useful Service Manual! With it I was able to identify the damaged pots in my old amplifier, purchase the adequate replacements and make myself the repair.
I have again my old amplifier, still a very good one that I will keep for as many years as I can!
Thanks to Owner Manuals!
GM-X422, GM-X322
16
Gain Control Power Indicator
The power indicator lights If sound is too low, even when the
volume of the car stereo used along with power is switched on. this power amplifier is turned up, turn gain control on back of the power amplifier clockwise. If the sound distorts when the volume is turned up, turn the gain control counter-clockwise.
- SETTING THE UNIT
� Set the gain control to �NORMAL� when BFC (Beat Frequency Control)
this amplifier is connected to a Pioneer car stereo with RCA output jacks. If the sound Switch is too low or distorts, adjust the gain control. (ES and EW models)
8. OPERATIONS AND SPECIFICATIONS
If you hear a beat while listening to an AM broadcast with your car stereo, change the BFC switch using a small screwdriver.
LPF (Low-Pass Filter)/HPF (High-Pass Filter) Select Switch
Set LPF/HPF select switch as follows according to type of the that is connected to speaker output connector and the car stereo system:
LPF/HPF Select Audio frequency range Speaker Remarks Switch to be output Type
LPF (left) Very-low-frequency range Sub-woofer Connect a sub-woofer.
OFF (center) Full range
Bass Boost Level Control
Bass control can boost the level because it is not necessary control. around frequency selected by the bass � Level Control, Bass Boost for the speaker you use. boost frequency control 0 to 12 dB. Frequency Control can be adjusted only
Bass Boost Frequency Control (GM-X422)
HPF (right) Low-frequency range Tweeter If you want to cut the veryYou can select a bass boost frequency
high-frequency low-frequency range from 40 to 120 Hz with the bass boost
when the LPF/HPF select switch is set to a position other than HPF.
Fig. 8
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