The amp switches off at higher volume levels. When I turm it back on, the display reads - " check speaker cables" or something similar. The cable I have used is Monster variety maybe 12 gage even for the center and rears. All speakers are 8 Ohms. All cable lengths are matched for fronts and rears.
Thought it was a heat issue - fitted a fan to blow air from top and out bottom - made no difference - got any ideas how to stop this happening ??
Sun Prairie here again. I finally solved my own problem, although I never figured out exactly what was causing it. If I keep the volume setting low on the receiver everything is OK. I can still raise the volume at the wall speaker switches without shutting the system down and triggering the Check Speaker Wires message.
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Sometimes you can connect a lower ohm speakers. However you must NOT go lower than the amp can take. For example if the amp has 8ohm as the lowest for it you can go to 8ohm speakers, if it has 16ohm speakers connected, but must connect 6ohm speakers. If the amp allows 6ohm than you can connect 6ohm speakers. Changing from higher level speakers to lower level ones will make the volume louder. But you must not connect ones lower than the rating of the amp.
The only other way is if there is something wrong with the amp and that it won't go higher due to a fault.
What's probably happening is that the amplifier is shutting down or cutting back the volume as protection from damage. You may have a partial short in the speaker wiring that is not a problem at lower levels, but at higher ones causes the amp to see too low a load. There may a problem with a speaker or crossover component that is breaking down at higher volumes. Or something in the amp's output stage is unable to handle the load.
Test the system with a known good speaker system and length of wire and see if the trouble continues. If it does, you'll know it's the amplifier that needs to be checked. If the test speakers can reach normal volume, you can start checking the wiring and other speakers for the source of the trouble.
It might be easier to "skip" the subwoofer meausrement step in Audessy and tune it by ear instead. Refer to page 52 in the manual, step 6/7.
I use familiar music and test tones when I tune my sub to the mains. Generally, I set the preamp trim to -10db, the crossover as appropriate (80 or below), and then bring up the level knob on the sub to taste. Confirm phase alignment, if possible, by having someone flip the phase (if available) so the response is strongest at the main listening position.
Keep it a little "lean" at first, and over the next several hours or days, bring the preamp level up one db at a time. It takes several days of tweaking to arrive at a level that I find appropriate. Once there, I try to ignore programs with bloated bass - remember, not all recordings are created equal.
Should you fond yourself bringing the preamp level to 0 or above, kick the sub amp level knob up a couple of clicks, and back off the preamp level. It's safer to have the amp do the work, than driving too hot of a signal at the preamp level and clipping it.
TEST SPEAKERS Right click on speaker icon in System Tray Select
"Playback Devices" The speaker icon ( checked as working) and volume
level graph should be visible Right click on the volume graph and
click "Test" Left hand speakers followed by right hand should be
SET DEFAULT & TEST MIC Click "Recording" tab. To
set required (webcam) mic as default - click on mic font to highlight
and click "Properties" In lower dropbox display "Use this device
enable" click OK Click "Levels" tab and ramp up sliders ( adjust to
suit later) Return to "Recording". Test mic by speaking and make sure
volume graph displays
Laptop x webcam/mic x Vista x Yahoo Messenger If you have an earlier OS, you may have to access your hardware from the Control Panel.
TEST SPEAKERS Right click on speaker icon in System Tray Select "Playback Devices" The speaker icon ( checked as working) and volume level graph should be visible Right click on the volume graph and click "Test" Left hand speakers followed by right hand should be heard
SET DEFAULT & TEST MIC Click "Recording" tab. To set required mic as default - click on mic font to highlight and click "Properties" In lower dropbox display "Use this device enable" click OK Click "Levels" tab and ramp up sliders ( adjust to suit later) Return to "Recording". Test mic by speaking and make sure volume graph displays Restart computer
The lpf-off-hpf switches control the "low pass" and "high pass" filters. When driving full-range or component speakers the filters are usually operated in the "off" position to send all frequencies to the speakers. When driving a subwoofer, the best position is "lpf". If you have a separate amp to power a subwoofer, this amp can be used just for the high frequencies by putting the switches in "hpf".
Input levels should be adjusted to match your receiver output. You don't want the levels so high that distortion results. But you want it high enough for the amp to be able to produce maximum output. Start at about midrange and adjust the receiver volume to a little higher than a comfortable listening level. Adjust the amp gain (level) counterclockwise until you begin to hear the speakers distort. The turn the control slightly clockwise until the distortion disappears. That's the best setting.
The Boss OL5KD does not have a volume control. It has an "Input Level" adjustment which is used to match the output from your head unit preamp output to the amp. It is the first rotary control just to the right of the input jacks.
If you have no sound at all, I'd suspect that something is incorrectly connected or there is no input to the amp. First make sure that the amp power light (green LED) is coming on when you turn on the receiver and that the protection light (red LED) stays off. Then check all of your wiring, especially the RCA output cables.
Initially set the controls like this: MASTER/SLAVE switch in MASTER position (left). INPUT SENSITIVITY 2v-8v (right). INPUT LEVEL, SUBSONIC FILTER, BASS BOOST, and LOW PASS FILTER; midrange. PHASE SHIFT "0" (left). Leave the remote level control disconnected.
After you've checked all wiring and initially set the switches and controls, turn the receiver on to about 3/4 volume. Now adjust the INPUT LEVEL to the left just until you begin to hear distortion, then turn it back right just a little. Adjust the other controls for best sound. Plug in the remote level control and make sure that it adjusts the bass up and down. You're finished!
If there's still no output from the unit after checking all of the wiring, either the unit is defective, it's not getting an input from the receiver, or the sub(s) are defective.
volume levels on all channels varies depending on what dsp mode you are using. to be able to determine the level you desire, just chnge the level setting of those channels. either you do it by remote control or the front panel of the amp. try setting the dsp mode on disco and you should hear higher vol levels on all channels. Do not expect as well all channels to produce same vol levels as your effects speakers may not be able handle higher power levels.