Help. RF-52ii/RC-52ii OR RF-62ii/RC-62ii in a small 10' X 12' Room

[zrill]

Normally its about -20db to -25db. Its already very loud. Thats maybe becsuse i did not calibrate to 75db as i do not have a spl meter. Its set by the avr itself. i dont know what is it reference to. If mid basd is from 60hz then the rf62 should be doing the job rite?

Was thinking about the HSU MBM-12 MK2 but would like see if i can further improve without it.

[dimanata2007]

Pretty sure my Q. gonna sound dumb to most of the ppl here
but I’m still going to ask:

Initially I set my SUB channel to +5 and SUB gain to 5. Sub
was sitting on the 1” deep carpet, in the corner, about 12” away from the wall.
I watched “Jack the giant’s slayer”
(great movie by the way) and was absolutely happy with SUB setting, bass and
overall sound.

Few days later I pushed my BIC F-12 deeper into the corner (
now it’s about 5” away from the wall) and put sup onto 5” tall stand, watched “The
last stand” and after about 30-40 min turned SUB channel level to +3 and left SUB
gain at 5 due to too much “boom”.

Yesterday per Skylinestar comment I turned SUB channel level
to 0 and SUB gain to 7 and after 20-30 min of “Jack the giant’s slayer” (yes, we
watched it third time J)
turned gain up to 9.

It didn’t sound right to me so I changed SUB channel level
and SUB gain few times and stopped at SUB channel level at +3 and lowered SUB
gain back to 5 - basically my initial setting.

I also switched my main speakers to small once more (sub
setting goes to “YES” automatically and sub “PLUS” setting is not available if
front set to “SMALL”), didn’t like “small” setting and switched back to front
and center “LARGE” and SUB “Plus” setting- to me it sounds heavier, fuller,
more natural, plenty of low bass but less “boominess”.

My Pioneer’s SUB channel level goes from -15 to +15. Can I
(even theoretically) damage SUB channel or receiver by bumping channel level up
to +3 +5? Or I better keep channel level at 0 and turn SUB gain all the way up
just to protect my receiver from overworking/overheating? Is it possible that
my sub too close to the wall and it messing up bass?

According to my search a lot of people keep their channel
level setting at +7+10 or maxed out, could it harm the receiver or sub ?

[derrickdj1]

Here is a great guide to setting up a subwoofer:http://forum.blu-ray.com/showthread.php?t=95817

Bass management is also discussed in the guide. Here is the nuts and bolts on the sub setup:

Subwoofer Setup and Crossover Settings:

1. You need a realtively long (12ft or longer) sub cable to experiment with the
   position of the sub in the room. Get a long RG6 subwoofer cable from
   Monoprice.com or any other source. RG6 cables with RCA connectors at both ends
   have good shielding and work better than regular RCA cables.
   
2. You may also need a Y adapter (2 male, 1 female).
   
3. Connect one end of the sub cable to LFE out (sub out or sub pre-out) on the
   back of the receiver.
   
4. Connect the other end of the sub cable to the Left channel input (on some
   subs, the Right channel can also work) of the subwoofer. If you use a Y adapter
   (2 male, 1 female) and connect the subwoofer cable to both the Left and Right
   inputs on the back of the sub, you may get between 3db to 6db more output from
   the subwoofer. Refer to the footnote.
   
5. Turn the sub to on and set it to Auto.
   
6. On the back of the sub, turn the crossover all the way up to the maximum
   level or turn it off. You set the crossovers in the receiver's menu.
   
7. On the back of the sub, turn the level (gain) to 50%-65%. You can adjust
   that a little later during calibration. However, it is a good idea not to exceed
   the 3/4 (75%) point.
   
8. In the receiver's menu, make sure the subwoofer is turned to ON.
   
9. In the receiver's menu, set all the speakers to SMALL.
   
10. In the receiver's menu, set the high pass filter (HPF) crossover frequencies
    of all your speakers to at least 10Hz or 15Hz above the minimum frequency
    extension of the speakers. If you can't find the frequency response of your
    speakers, consult the table at the beginning of this thread.
    
11. In the receiver's menu, set the low pass filter (LPF) of the subwoofer to
    120Hz.
    
12. If your receiver does not allow you to set the crossovers of the individual
    speakers, set the (HPF/LPF) crossover to somewhere between 80Hz to 120Hz
    according to the low frequency extension of your speakers. If you can't find
    your speakers frequency response, consult the table at the beginning of this
    thread.
    
13. In the receiver's menu, set the subwoofer to LFE and not LFE+Main or Double
    Bass.
    
14. Run the calibration program. The Audyssey calibration program works best if
    you run it for multiple listening positions.
    
15. If the calibration program changes the above settings, you can change them
    manually to above values. In general, increasing the crossover is ok. If you
    lower the crossover below the level that Audyssey calibration has set, Auddyssey
    will not apply its filters to those lower frequencies below the crossover point.
    

Note: The phase control on the back the subwoofers is a usually
a simplistic analog control that only changes the phase at one frequency. Proper
phase alignment requires that the phase change is different at every frequency.
Unfortunately, that is not possible with an analog control. As a result,
Audyssey recommends that you leave the phase control at
zero.

After calibration, the actual dB settings are totally
meaningless. Each room is different. The same speakers may sound completely
different in another room and may require different dB settings. For example,
you may have two identical front speakers and set their levels equally. However,
it is possible for one of the speakers to sound louder. This is because the
location of each speaker with respect to the boundaries is not the same and they
interact with boundaries differently.

The most important thing about
calibration is that you want the level of all speakers to be the same at your
primary listening position. The actual positive or negative dB levels are not
that important.

[dimanata2007]

Ok. I’ve read whole article at work and on the way home I
realized that I have MCACC in my receiver and I even used it before… I guess I’m
getting old and started forgetting things…

Moved SUB about foot from the corner and run MCACC which set my Fronts to Large, Center and
Surrouds to small and SUB to “YES” (not “Plus” like I was setting it up) .
Fronts and Center set to -3db, surround Right to -2 and Left +2 and SUB to -12.
I didn’t change crossover frequency (at 80) and Sub gain still at 5. Followed to
instructions and set Fronts to “Small”, watched 20-30 min of “Jack the giants
slayer” (my test movie) and switched back to “Large”-not sure how to explain it
in details, but even my wife who is not really into HT and sound said that “Large”
setting sounds noticeably better.

I really amazed how low MCACC dropped SUB channel level and it still sound good and producing great bass.

[derrickdj1]

The sub level on the back of the sub is way to high. MCACC set the level in the avr to -12 which is the max negative setting.. If you are using one sub, leave the fronts set to large if that sounds better. MCACC has a quasi bass management scheme even with some of the speakers set to large. Multiple subs may be need to smooth out the bass response in your room. Most of my sub's gain settings were 9-10 O'clock. I like the sub level in the avr between -3 and +3 after running MCACC.. At that point I never touch the sub control for volume adjustment.

Use one of the MCACC preset just for movies. This way you can raise or lower the sub level without changing the whole system.

[dimanata2007]

my SUB channel level can go down to -15. so would you advise to raise SUB channel level, let say to -4 and turn SUB gain a bit down to 2-3 to keep bass at the same level?

with fronts set to Large I just hear more details, mid bass is better too.

[derrickdj1]

.Yes, then you should be all setup.[] The Bic subs are great for home theater/music. I had the Icon VF 36, similar to your F 3, that was a great speaker in my HT setup. I still have a pair of VF 35 towers that I may use for a 2 channel system.

[dimanata2007]

o-oK! thanks again.

yeap, I love my F-3's.

great sound, great look and I bought them right. I know that C-3 would be better match fo my fronts vs RC-62II, but I'm just not in love with Synergy C-1,2,3 disign, they look wierd and got too much plastic.

so far I like BIC F-12 too. should get replacementnext week due to faulty ON/AUTO/OFF switch, but becides that I really like it.

but I do dream about RF-7II and KW-120 time to time...

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