VTF 2.3 arrived, need some help...

[zvardanian]

I purchased the VTF 2.3...seems ok so far, but compared to my old x-sub, it feels a little lethargic. Bass doesn't seem as present nor tight. If I turn the volume up too high on the sub, I hear "thuds" everytime the bass hits to a certain level. If I step back further, the thuds aren't audible.

Ports are open, far from the wall, and it's sitting on a gramma pad.

I set the phase to 0, and that helped with the tightness some. I'm not sure what to do...any ideas? Room conditions haven't changed between the two.

Am I missing something?

I'm running a Marantz Sr5003 off the sub-out. Should I be using high-level?

[Pete_Hsu]

Hi zvardanian,

I recommend setting the volume knob on the subwoofer to ~ 9-10 o'clock (just barely above 1/4 of the way up), set the bass extension switch to the '2 port open' mode, set the crossover switch to 'Out'.

Have you had a chance to experiment with max extension mode (ie. one port plugged, and bass extension switch set accordingly)?

Now, can you describe your receiver settings to me? Are you using any auto-setup or anything like that?

Finally, what are your room dimensions (HxWxD, including that of openings to other areas)? Any detail you can give regarding your seating location and room would be much appreciated.

Thanks

Sincerely,

[zvardanian]

Hi Pete,

I'll be honest, I am a complete numbnut. I placed the sub on my gramma pad without the carpet spikes. :)

Everything is fine now. A very fine subwoofer it is.

I checked underneath, it would seem there is a lip and the rubber surround doesn't extend past it... no harm.

thanks for your response.

[Pete_Hsu]

Ah ha, now that should make a big difference :) Good to hear that you were able to get the subwoofer working well now!

Are you running the subwoofer in max extension mode (with one port plugged)?

Thanks

[tye]

I just received my VTF-2 Mk3 and I haven't calibrated it yet. I was using it last night to watch the HD-DVD of Serenity and I noticed some rattling during the space battle near the end of the movie.

Now, since I'm kind of a noobie to speakers and subs, I'm not sure what is causing it.

I have my sub sitting on top of a blanket folded up (for now - I plan to get something like a Subdude or other platform to set it on), and my flooring is this very high quality/durable fake hardwood stuff (I just bought the house in November and I'm not sure what it's called).

The sub is sitting next to my couch and relatively close to a sliding glass door. I'm using a composite cable that wasn't designed specifically for a subwoofer (my subwoofer cable will arrive later this week), and I have not calibrated either my receiver or my subwoofer.

Now, I did not expect to get the best possible sound out of my sub given all of those conditions, but I was a little surprised to find that it sounded like it was rattling. Is this something that will most likely go away once I create a more ideal situation for my sub - or should I be concerned?

Thanks!

[Pete_Hsu]

tye, if you play our test tone CD, at what frequency or frequencies do you hear the rattling? Are you able to pinpoint exactly what part of the subwoofer you hear the rattling?

Make sure that all the screws along the perimeter of the driver and amplifier are snug and not loose, and make sure the spiked feet are tightly screwed in at the bottom.

If that doesn't help, then remove all the cables from the back of the unit, remove the 12 perimeter screws along the four outer edges of the amplifier, and pull the amp out a little bit (grip the high level inputs and pull). Look inside the enclosure to see if you can find any loose items inside.

Thanks

Sincerely,

[tye]

tye, if you play our test tone CD, at what frequency or frequencies do you hear the rattling? Are you able to pinpoint exactly what part of the subwoofer you hear the rattling?

Make sure that all the screws along the perimeter of the driver and amplifier are snug and not loose, and make sure the spiked feet are tightly screwed in at the bottom.

If that doesn't help, then remove all the cables from the back of the unit, remove the 12 perimeter screws along the four outer edges of the amplifier, and pull the amp out a little bit (grip the high level inputs and pull). Look inside the enclosure to see if you can find any loose items inside.

Thanks

Sincerely,

I will run the test tone CD as soon as I can and report back what I hear/find. Thanks Pete.

[Pete_Hsu]

Thanks tye

[tye]

Well, I found the source of the rattling. It's the glass door on our fireplace in the room with the Subwoofer. I'll have to insulate it somehow so it doesn't rattle in the future.

I'm glad it wasn't the sub. I was fairly certain it had to be something in the room.

[Pete_Hsu]

Good to hear that it's not the sub, thanks for the update tye!