Ten-Band Stereo (310-2030) Operation Faxback Doc. # 9781 Graphic Equalizer Follow these steps to connect the equalizer to your audio system. Cautions: Use only shielded audio cable with phono-type connectors, available at your local Radio Shack store. Before you connect the equalizer, turn off all the components in your audio system and unplug their power cords. Before you plug in the equalizer's power cord, complete all the connections and be sure the equalizer's POWER button is set to the out position. 1. To connect the equalizer to your receiver, connect the receiver's left and right TAPE OUT jacks to the equalizer's L and R MAIN IN jacks. Then connect the equalizer's L and R MAIN OUT jacks to your receiver's left and right TAPE IN or TAPE MONITOR jacks. 2. You can connect a tape deck to each set of tape jacks (TAPE 1 and TAPE 2) on the back of the equalizer. To connect each tape deck, connect the equalizer's L and R TAPE OUT jacks to the tape deck's left and right IN jacks. Then connect the tape deck's OUT jacks to the equalizer's L and R TAPE IN jacks. 3. Plug the equalizer's power cord into your receiver's switched power outlet or any standard AC outlet. Warning: The equalizer's power cord has a polarized plug. To prevent electric shock, do not use an extension cord or other receptacle unless you can fully and easily insert the plug's blades. 4. Reconnect the other components' power cords. Follow these steps to use the equalizer. 1. Turn the receiver's volume control to its lowest setting. Then set the receiver's tone controls to their center positions. 2. Set the equalizer's slide controls to 0 dB (center positions). 3. Be sure BYPASS is set to the out position. If BYPASS is set to the in position, press BYPASS to release it. 4. Press POWER to turn on the equalizer. The SPECTRUM DISPLAY lights. 5. Select the receiver's tape monitoring feature. 6. Turn on the receiver. Using the receiver's controls, select the audio source. 7. If the audio source is a tape deck, set the appropriate TAPE MONITOR button to the in position. If the source is not a tape deck, be sure both of the equalizer's TAPE MONITOR buttons are set to the out position. 8. Start the audio source and adjust the receiver's volume. 9. Adjust the equalizer's slide controls for the desired sound (see "Adjusting the Frequency Controls."). You can view the effect of the adjustments on the SPECTRUM DISPLAY. Note: The display shows the sound levels of the audio source you are listening to. For example, if you are dubbing from one tape deck to another but listening to the CD player, the display shows the sound levels of the CD player. ADJUSTING THE FREQUENCY CONTROLS The equalizer has separate LEFT channel and RIGHT channel controls so you can set the sound differently for your left and right speakers. You modify each channel's sound by moving the slide controls up or down. Each slide control affects a small range of frequencies. The frequency marked below the slide control is the mid-point of the band affected by that control. To boost a frequency band's level, slide the control above 0 dB. To cut the level, slide the control below 0 dB. If you do not want to change the sound level of a frequency band, leave its control set to 0 dB. The following information groups the frequency bands into five ranges. This information can help you adjust the sound for the desired effect. Bass (20-140 Hz) Example: Bass drum - Use these controls to enhance the music's low tones or to reduce rumble, acoustic feedback, and other low-frequency noise. Mid-Bass (140-400 Hz) Example: Bass guitar - Boost the frequencies in this range if the sound is too thin. Cut these frequencies if the sound is muddy or boomy. Mid-Range (400-2,600 Hz) Example: Most deep vocals - Changes in this range cause the greatest effect. The best settings for this range vary depending on the type of music. Upper Mid-Range (2,600-5,200 Hz) Example: Most high vocals - Boost these frequencies to brighten the sound. Cut these frequencies if the sound is harsh. High End (5,200-20,000 Hz) Example: Piccolo - Boost these frequencies to enhance the brilliance of the music. Cut these frequencies if the sound is piercing. You can also cut these frequencies to filter high-frequency noise. Adjusting the Display Level The SPECTRUM DISPLAY shows the relative sound level of each frequency band. The highest and lowest sound levels might not fully appear. If necessary, slide DISPLAY LEVEL up to view low sound levels or down to view the peaks of high sound levels. Bypassing the Equalizer Circuit The BYPASS control lets you bypass the equalizer circuit so you can hear or record the sound without equalization (just as you would hear it with all slide controls set to 0 dB). Set BYPASS to the in position to hear and record the sound without equalization. Set BYPASS to the out position to return to equalization. Caution: To prevent overdriving your amplifier or speakers, turn down the receiver's volume control before you press BYPASS. After you press BYPASS, slowly increase the volume. Using the Stereo Image Enhancer The Stereo Image Enhancer lets you adjust the perceived separation between the left and right channels so you can broaden the sound field. You can use this feature to compensate for improper speaker placement or simply to enhance the stereo effect. Set STEREO IMAGE ENHANCER to the in position to enhance the stereo effect. The STEREO IMAGE ENHANCER indicator lights. Then adjust ENHANCER LEVEL to increase or decrease the effect. Set STEREO IMAGE ENHANCER to the out position to return to normal sound. Recording If you connect a tape deck to the equalizer as described in "Connections," you can record from any other audio source connected to your receiver. If you connect two tape decks, you can make two recordings at the same time, or you can dub (copy) a tape from one tape deck to the other. Be sure you are familiar with the information in "Basic Operation" and the instructions in your tape deck's owner's manual. Then read the following information to learn how to set the equalizer for recording and dubbing. Note: If you record the sound with equalization, we recommend you play it back without equalization. If you turn on the Stereo Image Enhancer when you record, we recommend you turn off the Stereo Image Enhancer during playback. Otherwise, the sound might distort. The recorded sound and the sound you hear as you record depend on the following settings. BYPASS BYPASS determines whether or not the signal passes through the equalizer circuit. BYPASS Set To Out: You can hear and record the sound with equalization. BYPASS Set To In: You hear and record the sound without equalization. EQ RECORD EQ RECORD determines whether or not the signal passes through the equalizer circuit before you record it. EQ RECORD Set To In: If BYPASS is set to the out position, you record the sound with equalization. EQ RECORD Set to Out: You record the sound without equalization, regardless of the BYPASS setting. STEREO IMAGE ENHANCER With STEREO IMAGE ENHANCER set to the in position, EQ RECORD determines whether or not you record the expanded sound. EQ RECORD and You record the expanded sound. You hear the IMAGE ENHANCER expanded sound if you monitor either tape Set to In. deck. EQ RECORD Set to Out and You do not record the expanded sound. IMAGE ENHANCER Set to In. However, you hear the expanded sound, regardless of the audio source. Note: BYPASS has no effect on the Stereo Image Enhancer. TAPE MONITOR Each TAPE MONITOR button determines whether or not you hear the corresponding tape deck's output. TAPE MONITOR Tape 1 You hear the tape deck's output. Set To In and Tape 2 Set To Out TAPE MONITOR Tape 1 and 2 You do not hear the tape deck's output. Both Set To Out Notes: Do not press in both TAPE MONITOR buttons. Otherwise, you mute the sound from both tape decks. Some tape decks have a tape monitoring feature. If you select your tape deck's tape monitoring feature, and you press in the equalizer's TAPE MONITOR button for the tape deck you are recording to, the sound you hear is the actual recording. DUBBING The DUBBING buttons determine which tape deck you copy to and from. TAPE DUBBING Deck 1 > 2 Set to In You copy from Deck 1 to Deck 2. and Deck 2 > 1 set to out TAPE DUBBING Deck 1 > 2 set to out You copy from Deck 2 to Deck 1. and Deck 2 > 1 set to in. (br/all-02/22/95)