<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by LaTiNo156:
Is the amplifier from Bose or Blaupunkt?
How are the components connected exactly? Are the speakers connected to the radio or to the amp (like at home)? Or is the amp only steering the Sub?
What does "the tone potentiometers have less dB range" mean? And is it good or bad?
</strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Latino, the Bose amp is multichanneled, it acquires signal from the head unit's speaker output. It is still undefined what kind of signal is that. Bose replied once to a mail i sent (asking if there is a line out - low level signal with common ground - at the head unit) , saying only that the signal "has to be processed" before entering the Bose amp. Go figure. Obviously the "process" is the equaliser disabling and the tone ( bass-treble ) level decreasing. I believe (without having any proof) that the signal is just high level speaker signal, making the bose amp working as an old booster. (Remember those old 5 or 7 band equalizers with booster?
About the potentiometers having lower range:
Normally the bass and treble potentiometers have the ability to increase or decrease the low and the high frequencies by 6dB maximum.
This is for most home or car audio. Meaning that when you turn just the bass to maximum, all frequencies below 400Hz for example are increased by 6dB. Notice that a 3dB increase, actually means DOUBLE value (its a logarithmic scale). This is good at low and mid volume levels, but in high levels its bad. What really happens is that turning the bass to the maximum, you give to the amplifier's input 4 times stronger signal that it normally can hanlde. This is called overdrive, and it leads to distorted output, getting your speakers (tweeters) in danger. Dont get confused about it, you may increase the bass, and burn the tweeters (
) instead of the woofers, this is beacuse inside the overdriven amplifier, are generated hig frequency harmonics = sine waves having a multiple frequancy of the initial. In simple words, you send very strong distorted signal to your speakers. Speakers are actually burned by distortion, not by high wattage (between some limits.)
Maybe I got too deep (in some cases thats not bad
), the bottom line is that the Bose system, is configured having the bass and treble potentiometers being able to increase/decrease the bass and treble only by 3dB, to avoid the amp's overdrive, and getting your speakers safer.
Or maybe i could just say: +/- 3dB is good