merlin vsm owners , what is your room size ?

Masilu,

I am certainly no expert in the functioning of the BAM module but from what I was reading on Bobby's website I don't know why it would pose any particular challenges for integrating a sub into your system, and it may make it easier for all I know.

Here's how I used to integrate a Canton Ergo sub (now called the Sub 650 in the Canton line) into my system, and it's all done by ear. There are three knobs you'll fiddle with: (1) phase, (2) crossover point, and (3) volume.

1. Play some music that has some bass in it and adjust the phase until it provides the strongest bass.

2. Adjust the crossover point until you like where the sub kicks in. If the crossover point is too high, for example around 50Hz was too high for me, then the sub will kick in at too high a frequency, at least for my liking.

3. Once you start to home in on the crossover frequency that you like then increase or decrease the volume according to your tastes.

The Ergo sub had 45Hz as its lowest crossover point I believe, which was enough for me. I auditioned a smaller sub that had a 50Hz minimum crossover point but that was too high. The 45Hz minimum crossover point was always adequate for my needs though.

By adjusting the sub crossover point and the volume I was able to get the sub to provide a fullness of sound at lower volume but without calling undue attention to itself. I also liked the Canton sub because it was fast, certainly faster than the sub on our home theater system.

I don't know why the BAM module would alter that procedure, but if it did I'm sure Bobby P. would let us know and I would certainly heed his advice.

I had a REL storm 3 sub before in the same room. Some how did not like it.

Problem with bam is BAM will cut off frequencies below 30HZ. so what is going to SUB from amp speaker end is cut off below 30HZ.

Another option is i can use the Second OUT from CD player directly to SUB.Then i will get frequencies below 30HZ

I am open to try a new sub which is fast as merlin and has no port.

Just one idea for you to consider:

Per my post above, the VSM's low end response is IME quite sensitive to boundary reinforcement. You have the speaker about 4 1/2 feet out from the wall behind them - great for imaging, not so great for fullness in the mid-bass. I'd try halving the distance between the speakers and that wall. Ignore any imaging issues for a moment and just get a feel for the change in tonal balance in the lower registers at the new room position.

It may lead you to a better listening experience via a simple change of room positioning, it may lead you to consider the addition of a subwoofer (notwithstanding the BAM related issues you mention), or it may lead you to conclude that you'd prefer a different speaker in that room. In any event, it's probably a worthwhile experiment - simple, free and (for better and/or worse) probably educational.

Martykl,

i have tried your idea before. 1 or 2 inches can be taken back. more than that will give a compressed sound. And the low bass increases and not the mid bass, i felt so.

i feel the ARS sonum GRAN filarmonia may give what i am looking for. because the Fila SE gives a better bass punch than many other amps. So GRAN fila may fill the room better

Masilu,

Your idea about using the second out loop on your CD player would seem to be on the right track as your goal is to connect the sub in such a way that it operates independently from the BAM. Other options are to drive the sub either from your preamp, say a "record" loop, or a pre-out tap if you are using an integrated amp that provides that function.