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See EQ Mode on page 59 of the owners manual to set the bass and treble for the front speakers, presumably for 2 channel mode. For multi-channel mode there are several pre-programmed audio modes listed starting on page 43 and music mode starting on page 44. https://docs.sony.com/release/STRDH520.pdf
On the Remote Control
2 Use selection button to select "ON".
ON : Allow tone adjustment (bass, treble).
OFF : Playback without tone adjustment.
The tone cannot be adjusted in the direct
to select an item to be set, and use
to select a setting value.
Bass : Adjust low frequency range (bass).
• -6dB - +6dB (0dB)
Treble : Adjust high frequency range (treble).
• -6dB - +6dB (0dB)
"Bass" or "Treble" can be set when "Tone Control" is set to
There are no hard and fast rules for setting Bass, Midrange and Treble on your radio. Depending on the type of music you are listening to with your radio, it can / will determine your sound settings. To attempt to set the sound settings on your radio, select the sound settings and set all of them to 0. ( Bass,mid,treble ), then start playing your usual music. With the music playing move the treble setting in single incriments 1,2,3,4 and so. A comfortable setting is usually a 5 out of a total number of 6. Then move over to Midrange and repeat process. A 4-5 out of 6 is usually comfortable. Finally comes the Bass. You do not want to overpower your speakers with too much bass as this will damage them over time. Repeat the usual process and listen carfully for any baffling or distortion as you move through the numbers. A comfortable bass setting is usually 2-4 out of 6. Again I must stress that there is no hard and fast rule for settings. It boils down to the type of music, and what your ears tells you sounds good. What sounds good to me might not be enough for you, or vice versa. I hope this helps! Cheers!
you will need to access the bass and treble setting on the unit.
If you have stnadard speaker then dont put the bass to high as you can not turn the volume up high.
The same for the treble.
Set them at about the same and turn the volume up until it sounds good.
If it is to quiet then turn the treble and bass down and then the volume up more
In the initial stage of the set up your 9887 the stereo is set with an Equalizer (parametric or graphic), Until you use the Imprint set up module to Tune your car you wont get bass / treble controls. Also after Tuning with Imprint you will lose the EQ function, and it will only be B/T.
I suspect that the speaker levels need to be set. You connected everything right - many people would not have connected the sats via the bass section (which has their high pass crossover and overload protection). But I am betting the HSU is turned up a bit on the high side.
Try this. Set all speakers to small, set all levels to 0. Play the receiver in stereo all mode. If the bass is strong, you need to turn the HSU down closer to a natural sound. Then use the speaker setup tone and adjust as needed.
I have an Alpine 9887 you have a different eq than just trebel and bass the only way to get you bass an trebel setings are to install the imprint stoftware now if thats the route you go it tunes your radio to what it thinks it should sound like it's for sound quality not for alot of bass been there done that I have the software but you need to take it to a good alpine dealer to have it installed good luck
check your wiring in your vehicle to make sure that the yellow wire from the stereo gets "constant" power. It it what keeps your stereo's memory, and powers the audio amp in the stereo. If this wire is loosing power when you shut the key off in your car, you will loose all of your settings...bass, treble, tuner, clock, and also where you left off on your CD.