Subwoofer tuning help needed.

[bullittandy]

I just got the Infinity 1220SE 12" subwoofer box and installed it in the trunk of my 99. I have a Alpine 220 2 channel amp bridged into 1 channel running it. The input signal is from the rear package shelf speakers and runs into an adjustable line output converter.

My questions:

1.Where is a baseline setting for the line output converter? 1/4? 1/2? ??2.Does it matter if I tune the sub with the gain of the amp? the line output converter? 3. Does it matter what direction the sub faces? front, back, side?

BTW, this sub is a monster-way too big for the trunk-I should've gotten another Basslink.

[qsiguy]

There isn't any standard to which the LOC should be set. Unless you have an oscilloscope you just need to set it by ear. You'll want it as low as possible to get the volume you want. The higher you set it, the more likely you are to get clipping.

I would just turn it all the way down, adjust the stereo volume for the high's where you'd typically listen to it and then bring up the bass to a level that sounds good to you. You should be able to tell if it gets too high and starts to clip. make sure you set the bass on the headunit at the mid point. I'd probably set the amp gain around 1/4-1/2 while you set the LOC. They both do basically the same thing so it shouldn't make a huge difference. I would personally try to get them both adjusted to around the same point. For instance, get the volume adjusted to where you like it and try to have them both at around 1/3 level. This way you should have an equal signal strength passing through the two level adjustments. Some of this probably doesn't matter, it's just my personal preference.

Doesn't really matter which way the sub faces. It depends on the vehicle environment. If it's movable try it in a few positions and see what you like the best.

[bullittandy]

thanks, tips from the pros.

[bullittandy]

New question.

My basslink has a "volume control" is there a way to make one for a regular amp?

[maxnix]

Hmmmmm.......thought the FGY33 Bose system already had a subwoofer?

[bullittandy]

Hmmmmm.......thought the FGY33 Bose system already had a subwoofer?

Doesn't it have two in the rear shelf?

If those are what you're thinking of-they suck-at least to my 33 year old ears-but maybe they sound good to your (how old?) ears?

[Rex]

New question.

My basslink has a "volume control" is there a way to make one for a regular amp?

The true expert will weigh in soon, but you could look for an Epicenter.

[qsiguy]

Yes, there are little bass boost knobs you can wire into the RCA's. I'll have to look up the part and post. Can't recall it at the moment. It's a fairly inexpensive little component IIRC.