vt-12 set up in triple cross over system

[johnnyfulcrum]

Hi -

setting up and calibrating a vt-12 and stf-2. I believe all my speakers should be set to small....but I could set them to large and use the triple crossover as described below

- triple cross-over HT system (H/K AVR 230) in which I can cross-over the the Left/right front, center and surrounds at any of the following:
40 60 80 100 120 or 200 Hz

Don't know the range for the sats or the center - so I don't know where to set them!!!! and/or to use large or small.

Then add the sub - if speakers are "small" then sub is "automatically set to on". If they are large the sub can be:

1) off
2) LFE (only gets info if source has dedicated LFE
3) sub LFE+L/R - full range sent to speakers and sub gets frquecies below cross over described above and LFE.

Hummm seems maybe I should set the speakers to large and crossover manually I think the defualt crossover is 200Mhz because the manual says set to small for frequency limited sats that do not reproduce sounds below 200 Mhz. Well the VT-12 system isn't one of those freq. limited systems now is it :)

or is it?

toughts?

thanks
johnnyf

[Dudley]

I was just talking about a triple crossover - wish I had one. What other recievers besides the HK have this feature? I am sure it will trickle down eventually.

I would set all speakers to small and let the ventriliquist crossover handle the rest.

[Sasha_G]

Hi -
Then add the sub - if speakers are "small" then sub is "automatically set to on". If they are large the sub can be:

1) off
2) LFE (only gets info if source has dedicated LFE
3) sub LFE+L/R - full range sent to speakers and sub gets frquecies below cross over described above and LFE.

It seems strange that a receiver would permanently fix the crossover at 200 Hz in SMALL mode. Are you sure about that? If you can ajust it, then using SMALL with option 3 above would be best.

I'd like to say, "use the triple crossover", but I'm not sure what that does nor what the advantage of it is. :p

[Dudley]

triple crossover really helps if you have many different sized speakers in your system. If you have really small surrounds you can cross them at 120, you can cross you medium sized center at 80 and your mains at 60 (or set the mains to large if you have no sub). With just one crossover you have to compromise somewhere.

[johnnyfulcrum]

It seems strange that a receiver would permanently fix the crossover at 200 Hz in SMALL mode. Are you sure about that?

I'd like to say, "use the triple crossover", but I'm not sure what that does nor what the advantage of it is. :p


I was wrong - no matter what the spekers are set to (small or large) you can adjust the cross-over.

Triple crossover is just three crossovers - one for each grouping of speakers - front, center, surround.

I just thought that I should take into account the fact that in the vt-12 system the fronts go through the center (is there some sort of crossover circuit in there?) ....

So, bottom line - I can set the cross over point for the front speakers, the center speaker and the surrounds, anything below these X-over points is then sent to sub. What frequency should I use for each (given the unique nature of the vt12 system)?

The following is from my H/K reciever manual:

When all initial speaker "size" settings have been
made, you now have the option to take advantage of
the AVR 230's Triple Crossover system, which allows
individual crossover settings to be made for each
speaker grouping. The low-frequency crossover point
is set by the design of your speakers. Depending on
the design and driver complement of your speakers, it
is defined as the frequency which is either the lowest
possible frequency the speaker is capable of reproducing,
or the frequency at which sound is sent to the
speaker's internal low-frequency driver, as opposed to
the mid-range driver. Before making any changes to
the settings for the crossover point, we suggest that
you find the crossover point for the speakers in each
of the three groupings, front left/right, center and surrounds,
by looking at the specifications page of each
speakers' owner's manual, or by contacting your dealer
or the manufacturer's customer service department
or Web site. You will need this figure to accurately
configure the next group of settings.
The factory default setting for all speaker positions is
100Hz. If that setting is acceptable for all channels,
then no adjustments are needed and you may skip
this section.


The available choices at which
point low-frequency information will be sent to the
subwoofer, rather than to the main speaker channel,
are 40Hz, 60Hz, 80Hz, 100Hz, 120Hz and 200Hz.
Pick the choice that is identical to the information for
the speakers, or if an exact match is not possible, pick
the closest choice that is ABOVE the speaker's lowfrequency
limit or crossover point to avoid the creation
of a low-frequency hole where your system will have
no bass information.
In cases where LARGE has been selected as the
front-channel speaker option and LFE+L/R has
been selected as the subwoofer option, the frontchannel
sound information below the setting shown
will be sent to BOTH the front-channel speakers and
the subwoofer. Note, also, that when the LARGELFE+
L/R setting has been selected, the
crossover point is set by making adjustments at the
SUBWOOFER line, but the setting for the front
left/right speakers will automatically change in tandem
so that the same setting appears for both speaker
positions. This ensures that there is no hole in the
sound field due to different crossover points at the
front and subwoofer speakers.