STA-825 DIGITAL SYNTHESIZED AM/FM STEREO RECEIVER (310-2105) Operation Faxback Doc. # 19451 BASIC OPERATION WARNING: To prevent possible hearing loss, turn VOLUME to 0 before you turn on the receiver or change the audio sources. After you turn on the receiver or change the audio source, adjust VOLUME to a comfortable listening level. Follow these steps to use the receiver. 1. Press POWER to turn on the receiver's power. The STANDBY indicator goes off and the PROTECTION indicator lights. After a few seconds, the PROTECTION indicator goes off. 2. Select the speakers as follows: Press A or B to turn on either pair of speakers for a two-speaker stereo effect. Press A and B to turn on both pairs of speakers for a four-speaker stereo effect. To turn off a pair of speakers, press the corresponding button to release it. NOTE: If you connect only one pair of speakers, press only the corresponding SPEAKER (A or B) button. Otherwise, you mute the sound from the connected speakers. 3. Select the audio source as follows: To listen to a source other than a tape deck, be sure the TAPE MON indicator is off. If necessary, press TAPE MON so the indicator is off. Press PHONO, CD/AUX, TV/VCR, AM, or FM to select the audio source. To listen to a tape, press TAPE MON so the TAPE MON indicator lights. 4. To tune to a radio station, press TUNING UP or TUNING DOWN to tune up or down in the selected band. See "Tuning to a Radio Station", below, for details and for information about memory tuning. 5. Adjust VOLUME. To boost the bass and treble when listening at low volumes, press LOUDNESS so it is in the in position. 6. Adjust BASS, TREBLE, and BALANCE to suit your listening preferences. See "Adjusting the Sound", below, for more information. 7. Press POWER to turn off the receiver. The STANDBY indicator lights. HEARING COMFORT AND YOUR HEALTH Do not listen to your receiver at extremely high volume levels, especially when listening through headphones. Extended high-volume listening can cause permanent hearing loss. USING THE REMOTE CONTROL Many of the buttons on the remote control are identical in function to corresponding buttons on the receiver's front panel (such as POWER). Use these buttons exactly as you use those same buttons on the receiver. (Using memory tuning with the remote control is slightly different. See "Memory Tuning" under "Tuning to A Radio Station"). The remote control is effective up to a distance of about 20 feet, and within a 30-degree angle on either side of the receiver. Point the control at the receiver's REMOTE SENSOR window and press the desired button(s). If remote operation becomes erratic or stops completely, install two fresh AA alkaline batteries. See "Installing the Remote Control's Batteries", on Faxback Doc. # 32770. SELECTING A PROGRAM SOURCE You can select the built-in AM or FM radio or any external program source connected to the receiver by pressing the corresponding program source button - TAPE MON, CD/AUX, PHONO, TV/VCR, AM, or FM. The display shows the source you select. CAUTION: To prevent accidental overload, turn VOLUME to 0 before you change program sources. (See "Setting the Volume", below.) NOTE: Be sure to read the instructions for all of your system's components. SETTING THE VOLUME The VOLUME control is labeled with numbers so you can reference a number for a specific volume level. Tune VOLUME clockwise to increase the volume and counterclockwise to decrease the volume. NOTE: When you decrease or increase the volume with the remote control, the volume control moves counterclockwise or clockwise, respectively TUNING TO A RADIO STATION You can use manual, search, or memory turning to select a radio station. NOTES: Adjust the supplies AM loop antenna for best AM reception. TUNED appears on the display when the receiver tunes to a strong frequency. FM ST appears on the display when the signal is stereo. Manual Tuning Follow these steps to manually tune to a radio station. 1. Press AM or FM to select the band. The display shows the selected band. 2. Press TUNING UP (>) or TUNING DOWN (<) to tune up or down the band. The display shows the selected frequency. Search Tuning Use search tuning to quickly find strong AM or FM stations. 1. Press AM or FM. 2. Press AUTO SEARCH to turn on the search function. AUTO appears on the display. 3. Press TUNING DOWN (<) or TUNING UP (>). The receiver searches down or up the selected band until it finds a strong radio frequency. TUNED, FM ST or both appear on the display. Manual and Search Tuning Hints If you want to find a weak FM station, press FM MONO so MONO appears and tune to the desired station. The receiver displays FM frequencies 0.2 megahertz(MHz) intervals and AM frequencies in 10 kilohertz(kHz) intervals. If you press TUNING UP (>) when the display is at the top of the frequency range (AM-1710 kHz, FM-107.9 MHz), the display returns to the bottom of the range (AM-520 kHz, FM-87.5 MHz). If you press TUNING when the display is at the bottom of the frequency range, the display returns to the top of the range. When you select the AM or FM radio band, the receiver displays the last frequency selected on that band. Memory Tuning The memory tuning feature lets you instantly tune to a frequency you stored in one of 30 memory locations. Each location can hold an AM or an FM frequency. 1. Press AM or FM. 2. Use manual or search tuning to select the frequency you want to store. 3. Press MEMORY. MEMORY flashes on the display for about 5 seconds. 4. While MEMORY flashes, select the desired memory location (01-30) by pressing the appropriate memory preset buttons. This stores the frequency. NOTES: For single-digit memory locations, press 0 before the digit (01, 02, 03, and so on). When you store a frequency in a memory that already contains a frequency, you replace the previous frequency. If the receiver is disconnected from AC power for more than three days, it loses all the stored frequencies. Tuning to a Stored Frequency To tune to a stored frequency, press the desired memory location number using the memory preset buttons. If you use the remote control to tune to a frequency, press TUNER first, and then press the desired memory location number. Scanning Memory Stations Press MEMORY SCAN to scan the frequencies you stored in memory. The receiver stops at each memory location that contains a frequency for about 5 seconds, so you can hear a station before scanning resumes. To stop scanning, press MEMORY SCAN or any of the memory preset buttons that have stored frequencies. ADJUSTING THE SOUND Use the following information to adjust the sound to suit your listening preferences. Balance The BALANCE control lets you adjust the balance between the left and right speakers. This control affects both pairs of speakers (A and B). If your speakers are properly positioned and your listening area is centered between the speakers, the BALANCE control's center setting is usually best. For unusual speaker placements, adjust the balance as follows: 1. Tune to an FM station. 2. Press FM MONO so the MONO indicator comes on. 3. Adjust BALANCE until the sound seems to be coming from the point halfway between the two speakers. 4. Press FM MONO so the MONO indicator goes off to return to normal FM reception. Bass and Treble Adjust the BASS control to increase or decrease low sounds such as those from a bass drum or bass guitar. Adjust the TREBLE control to increase or decrease high sounds such as those from a violin, piccolo, or cymbals. Loudness At low volume levels, your ears are less sensitive to bass and treble sounds. When you listen at low volume levels, boost the bass and treble sounds by pressing the LOUDNESS button so it is in the in position. FM Mono To tune to and improve the reception of weak FM stations, press FM MONO. The MONO indicator comes on, and the signal becomes monaural (mono). To turn on the FM MONO feature and return to normal FM reception, press FM MONO so the indicator goes off. RECORDING A TAPE If you connect a tape deck to the receiver as described in "Connecting Audio Sources", on Faxback Doc. # 32769, you can record from one of the other audio sources. Press PHONO, CD/AUX, TV/VCR, AM, or FM to select the audio source you want to record from. Then begin recording. To ensure that the tape deck is receiving the signal, press TAPE MON so the TAPE MON indicator lights. If your tape deck has a tape monitoring function, you can hear the actual recording as it is made. If you want to listen directly to the audio source as you record, press TAPE MON so the TAPE MON indicator is off. USING HEADPHONES To listen through headphones, insert the 1/4-inch plug of a pair of low- impedance stereo headphones into the receiver's PHONES jack. For private listening, turn off the speakers by pressing the SPEAKERS A, B, buttons so they are in the out position. WARNINGS: To protect your hearing, follow these guidelines when you use headphones. Set the volume to the lowest setting before you begin listening. After you begin listening, adjust the volume to a comfortable level. Do not listen at extremely high volume levels. Extended high volume listening can lead to permanent hearing loss. Once you set the volume, do not increase it. Over time, your ears adapt to the volume level, so a volume level that does not cause discomfort might still damage your hearing. OUTPUT POWER METER The output power meter shows the relative amount of power being drawn from the receiver's amplifier. The meter is most accurate when you use one pair of 8 Ohm speakers. MUTING BUTTON Press MUTING to silence the speakers. The VOLUME control indicator flashes while the muting function is on. To turn off the muting function, press MUTING so the VOLUME control indicator lights steadily. BUILT-IN PROTECTION CIRCUITS The receiver has two special protection circuits: The thermal overload protection circuit automatically turns off the receiver's amplifier if it overheats. The overdrive protection circuit automatically turns off the amplifier if too much power is being drawn from it. If a protection circuit turns off the amplifier, the PROTECTION indicator comes on. If this happens, press POWER to turn off the receiver's power. Check for proper ventilation and proper speaker connections, and be sure the speakers have an impedance of 8 to 16 Ohms. The protection circuits usually reset in only a few minutes, so you can turn on and use the receiver again. The circuits seldom take longer than 30 minutes to reset. NOTE: If the receiver stops working and the PROTECTION indicator is not on, see "Replacing the Fuse", on Faxback Doc. # 32772. (BR/EB 4/29/96)