Turns out this was not the manual i was looking for. The concertmate 670 keyboard i have is a "Realistic" model made for Radio Shack and none of the diagrams on the owners manual i received matches up. HOWEVER, I must say the service Owners Manual provides was fast and efficient by being available online. The manual was in good readable condition and easily downloaded.
Thank´s for your help, I already recived these manual from you
Text excerpt from page 19 (click to view)
Adjusting the sound
You can adjust the sound characteristics to your preference.
Indication
BAS*2 (bass) TRE*2 (treble) FAD*3, *7
To do:
Adjust the bass.
Range
�06 (min.) to +06 (max.) �06 (min.) to +06 (max.) R06 (Rear only) to F06 (Front only) L06 (Left only) to R06 (Right only) LOUD ON J LOUD OFF 00 (min.) to 08 (max.) 00 (min.) to 30 or 50 (max.)*6
1
Adjust the treble.
Adjust the front and rear speaker balance.
*1 Displayed only when �L/O MODE� is set to �WOOFER� (see page 21).
(fader)
BAL*7 (balance)
Ex.: When �TRE� is selected
Adjust the left and right speaker balance.
2
LOUD*2 (loudness)
Boost low and high frequencies to produce a wellbalanced sound at low volume level. Adjust the subwoofer output level.
Indication pattern changes as you adjust the level.
SUB. W*4 (subwoofer)
VOL*5 (volume)
Adjust the volume.
*2 When you adjust the bass, treble, or loudness, the adjustment you have made is stored for the currently selected sound mode (C-EQ) including �USER.� *3 If you are using a two-speaker system, set the fader level to �00.� *4 This takes effect only when a subwoofer is connected. *5 Normally the control dial works as the volume control. So you do not have to select �VOL� to adjust the volume level. *6 Depending on the amplifier gain control setting. (See page 22 for details.) *7 This adjustment cannot affect the subwoofer output. 19
