Help my understand my amp

[Sniperslayer]

still being an amature at home audio components, i was recently taking a look at the plate amp i will be mounting into my box, there are quite a few things of which I dont know do what etc. If you guys would be kind enough to explain, or point out a resource for the information i would greatly appreciate it, pic:

 

[Gimpy Ric]

OK, I'll try, it's blurry but I think I can do this.

The toggle switch is on/off/standby. In standby mode it will switch the amp off after 10 min. if left idle.

The Phase knob is best left to someone else to explain.

Low Pass Frequency is the Freq. where the sub STOPS producing bass, and hands the rest off to the mains.

Level is like your volume knob.

On the left:

Top left RCA is your input from your receiver. Forget about everything else, it should not matter with your Yamaha Receiver. But I could go on but its dinner time.

 

[j_garcia]

Phase allows you to adjust for positioning the sub in various areas of the room; if it is near the mains, 0 is likely. It would be more for situations where maybe you had this sub on the opposite side of the room, near the listening position - that might put it out of phase with the mains and could cause some cancellation, or you could have 2 subs in different areas of the room and need to match their phase for the same reason.

Low pass is the x-over, aka the point where you START to reduce the output of the sub as you move higher up the frequency range. Output is not immediately cut off above that point; there is a slope associated with it as you move further away from the x-over point.

Top left is line level in and out, middle is speaker level in and out. I would recommend using line level.

 

[MDS]

The amp has two sets of line-level inputs and one set of line-level outputs. The input marked LFE will bypass the sub's internal xover so the low pass frequency knob (xover) will have no affect if you use that input. If you use the line-level in, the sub's xover will be active.

The phase knob controls how the sub's driver moves with respect to the drivers in the other speakers in the room. At zero it will be 'in phase'; ie moving in at the same time as the other speakers and out as the same time as the other speakers. At 180, it will move in when the other speakers move out. If the sub is at the opposite side of the room as the other speakers, a setting of 180 may help you to blend the sound of the sub with the other speakers better. You have to experiment and look for the setting that produces the best bass.

Edit: Jinx. Typing at the same time as J_Garcia.