Intermittent sound level on CD only

Live in North ,gone through a few of these puppies,Some of them flash to indicate they are on but not heating,usually a timer override safety issues. In the cases just push setting but to desired level.If however you only have a high/low setting or off on switch with not level settings and light is blinking,hate to say it,but it's gone to a better place.Sounds of taps playing in distance.

check oil level ---yes it can but tapping noise can be a lot more reasons --worn oil -low oil pressure--low oil level--rocker loose-worn or damaged lifter-worn damaged valves --timing chain --water pump--pulley --really anything can cause a tapping noise --try to isolate the area or sound and diagnose problem

Proper level setting of the mixer is important. HOWEVER if the clipping is occuring at the speakers the only possible problem MIGHT be that you have a supersonic feedback that is saturating the speakers above your hearing range, Be sure you don't boost the highs too much with the EQ as this can cause the feedback that you can't hear. Also make sure that you power the speakers from the SAME receptacle as the mixer, even if it means running an extension cord to bring power to the mixer. This is to avoid a low frequency hum and common mode distortion/damage. A low frequency hum could cause the clipping.
It would be a good idea to get a sound meter to check the sound level. You should be able to reach 85 Db from this system without clipping. If you need more than that, you MAY need more speakers if the band instruments are too loud. Also if the band has amps that get into the vocal microphones that adds to the clipping level... make sure the mics don't "hear" the band instruments. Make sure your speakers are toward the audience from the mics to avoid the supersonic feedback problem. If the vocalists can't hear themselves with that configuration you need to set up seperate stage monitors.

There are some pretty good videos on YouTube about proper mixer level setup.

The PV600 and PV400 have auto-on circuitry that turns the subwoofer on when a signal is presented, and turns off if no signal is detected for 15 minutes.

http://www.retrevo.com/support/Boston-Acoustics-PV600-Subwoofers-manual/id/522dj484/t/2/

Not knowing which Pioneer receiver you have I have dropped in the steps for No Sound from Subwoofer:

• Check that the subwoofer is connected properly, switched on and the volume turned up.

• If your subwoofer has a sleep function, make sure it is switched off.

• Make sure that the Subwoofer setting is YES or PLUS (see Speaker Setting on page xx).

• The crossover frequency may be set too low; try setting it higher to match the characteristics of your other speakers (see Speaker Setting on page xx)

• If there is very little low frequency information in the source material, change your speaker settings to Front: SMALL / Subwoofer: YES , or Front: LARGE / Subwoofer: PLUS (see Speaker Setting on page xx).

• Check that the LFE channel is not set to -80dB , or a very quiet setting (see Bass Peak Level

on page xx).

• Check the speaker level settings (see Channel Level on page xx).

Regarding the Large vs Small assignment of speakers, what they mean isn't so much the physical size but the ability to handle real bass. Large if Yes.

Check the battery for charge and the connections for corrosion. Small batteries tend to lose water--check the fluid level in each cell--bring the level up to the upper line with distilled water only--not tap water. You may need to put it on a low current charger for 6-8 hours. Hope this helps!

dude honestly you could get 101 answers for this and 101 oppinions a real person who knows what there talking about will tell you put on a sound cd with high and lows made for sound testing and play with the setting to you get the best sound to your ear every system is different even if i had the same system i would want mind different because of maybe different cars subs facing different way.prted boxes theres just to man options....so it comes down to you having to play with it and use your headunit manual or find a printout for the basic controls so you actuall know what your changing around till you find the best sound

It might not be the answer but do you have Traffic News set up? Many radios have a different volume setting for Traffic News which may have been set to a low level. Try turning the volume up when it has muted and it may solve it.

in audio system you have three different levels.
1-mic level which is very small output level.
2-line level(like cd player output)which is higher than above.
3-speaker level is highest one which drive speaker and get sound out from it.
if you want to get control for number 1 and 2 you can use very simple sound mixer.(from radio shack-or other electronic store)
connect your sound source(mic-cdplayer)to the mixer and get out from mixer to amplifier.

Found this in the manual:

To adjust the display brightness -

The display dims automatically to medium or low brightness, as appropriate for low light room conditions. You can adjust the brightness setting of the display for both strong light and lowest light environments, but not for the medium light setting. Turn the system off before setting brightness levels.

• In a strongly lit room, hold down CD Mode and press Volume up or down to adjust the setting between 5 and 9 (it is preset to 8).
• In a barely lit room, hold down CD Mode and press Volume up or down to adjust the setting between 1 and 5 (it is preset to 2).
• If you do not want the system to dim automatically, set both levels to 5.