muski;462955 Wrote:
Caleb --
Thanks for the interesting post. I put Floyd Toole's book on my amazon
wish list.
From a implementation standpoint, I took away two things:
1) At least two subs
Yes, if you care about more than 1 listening position.
muski;462955 Wrote:
2) That, at a
Mnyb;463004 Wrote:
On a side note I use an MeridianG68J as processor preamp it has a
digital filter for subwoofer (of some kind) and DRC below 300Hz and a
measurment program to use with it :)
So sub works well with stereo to.
My own slant on this i don't really believe in satellite
floor standers is good for 30Hz but xo is at 50 or 60 right now have to
check that file .
I also *not* using corners for placing of the mono sub it is at 1/5 of
room length and 1/3 of room depth .
I probably waste a lot of energy but it's more even and its a large
sub.
--
Mnyb
You can always try the old trick of putting a single sub somewhere in
the room then walking around the perimeter of the room to see where the
best sound is... then move the sub to that position...
--
Phil Leigh
You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what
Phil Leigh;463165 Wrote:
You can always try the old trick of putting a single sub somewhere in
the room then walking around the perimeter of the room to see where the
best sound is... then move the sub to that position...
Another variant is placing the sub in the *listening* position then
Ya, those sound like good suggestions. That sounds like a good way to
find your candidate positions.
--
ccrome2
Caleb Crome
Sr. Hardware Engineer
Logitech SMBU (i.e. the Squeezebox people)
BThe future is here. It's just not widely distributed yet./B
I-William Gibson/I
FWIW, below roughly 300-500 Hz, your room dominates the frequency
response of your sub. Imagine your room in 1 dimension -- it's like a
guitar strings natural vibrational modes. No matter where you stick
your stimulus, you *will* stimulate the fundamental and harmonics of the
string, and
Caleb --
Thanks for the interesting post. I put Floyd Toole's book on my amazon
wish list.
From a implementation standpoint, I took away two things:
1) At least two subs
2) That, at a minimum, the subs be equalized ( ~100Hz, though 500Hz
would be better).
Now, if I understand correctly, you
On a side note I use an MeridianG68J as processor preamp it has a
digital filter for subwoofer (of some kind) and DRC below 300Hz and a
measurment program to use with it :)
So sub works well with stereo to.
My own slant on this i don't really believe in satellite speakers so
I use sub in
For me a sub(s) for high-end stereo listening is all about having the
sub be that extra low end bass driver that the mains didn't come with.
IE seamless like it is actually in the cabinet without an audible gap or
missing/weak point.
This makes me a big fan of doing bass improvement by active
Bass can't get much better by using a Scan Speak 23W woofer in a closed
30 liter enclosure and powered by a good dedicated amp. Don't expect
creating earthquakes with it while watching film.
For high end audio it doesn't have many competition. It's in immensely
detailed and fast.
--
S2K
As thrilling as the discussion on Behringer filters has become... back
on topic of good quality subs - I have been using a Velodyne SPLr ultra
800 for few months now. Initially I was using it with an old pair of
BW 705s and an even older MF8000 pre/power combo, with FLACS and 320
MPs/4s
Robin Bowes;453009 Wrote:
On 30/08/09 05:05, mac wrote:
No need to spend that much money (for a SMS-1). The Inguz DSP
plugin
is ideally suited to this task... and it's free. For not much money
one
can buy an inexpensive calibrated measurement mic and use either
free
measurement
Robin Bowes;453607 Wrote:
On 01/09/09 07:26, mac wrote:
True, but FWIW, your EQ doesn't provide linear-phase room correction
capability like the Inguz/DRC solution does.
Er, I think you'll find it does.R.
Sorry mate. Your Behringer uses IIR filters, not linear-phase FIR.
Like I
On 01/09/09 15:13, mac wrote:
Robin Bowes;453607 Wrote:
On 01/09/09 07:26, mac wrote:
True, but FWIW, your EQ doesn't provide linear-phase room correction
capability like the Inguz/DRC solution does.
Er, I think you'll find it does.R.
Sorry mate. Your Behringer uses IIR filters, not
Robin Bowes;453766 Wrote:
On 01/09/09 15:13, mac wrote:
Robin Bowes;453607 Wrote:
On 01/09/09 07:26, mac wrote:
True, but FWIW, your EQ doesn't provide linear-phase room
correction
capability like the Inguz/DRC solution does.
Er, I think you'll find it does.R.
Sorry
If the reference signal is swept pink noise I'm almost certain they must
be IIR filters - FIR uses impulses (like TACT, et al).
--
Phil Leigh
You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...
SB3 (wired) - TACT 2.2X (Linear PSU) + Good
Robin Bowes;453793 Wrote:
On 01/09/09 17:48, mac wrote:
My information is based on hands-on experience (ownership) with the
Behringer DEQX units, and using (((acourate))), BruteFIR, DRC and
convolver filters.
That's not what I asked.
Where did you find out what filters are used
Robin Bowes;453798 Wrote:
On 01/09/09 18:13, Phil Leigh wrote:
If the reference signal is swept pink noise I'm almost certain they
must
be IIR filters - FIR uses impulses (like TACT, et al).
Interesting and probably reasonable logic.
Perhaps I'll have to give a TACT a whirl some
On 01/09/09 18:39, mac wrote:
Not sure where you got pink noise from.
I guessed - I can't remember if it's white or pink. I think you'll find
I wrote:
...it does a pink (I think) noise sweep...
It's been while since I did it, and I don't have a manual to hand.
R.
Robin Bowes;453828 Wrote:
On 01/09/09 18:33, mac wrote:
Aside it from being common knowledge, call or email Behringer
support
for confirmation of what I have already told you. Cheers.
Well, fancy that...
Unsubstantiated claims on the audiophile forum. Who would have thought
it,
On 01/09/09 19:53, mac wrote:
Not to mention a lot of wasted bandwidth.
So, you make a claim which you are unable to substantiate, I call you on
it, and now you talk about wasted bandwidth?
I see.
R.
___
audiophiles mailing list
Robin Bowes;453843 Wrote:
On 01/09/09 19:53, mac wrote:
Not to mention a lot of wasted bandwidth.
So, you make a claim which you are unable to substantiate, I call you
on
it, and now you talk about wasted bandwidth?
I see.
R.
Mr. Bowes, What I told you _should_not_ even
Seems to me that subwoofer+satellites setup has been for long in hi-fi
discussions. Back is the 70's there used to be several designers who
proposed this solution and some enthusiasts adopting it. The main
interest of such a setup was that satellites (two-way generally) produce
a cleaner sound in
Andy8421;452705 Wrote:
My room has a killer resonance at about 120Hz, and when I dial that out,
all sorts of phase nasties seem to appear..
Are you in a smallish room? I rather suspect your resonance is
actually at 60Hz, and 120Hz is the first harmonic... In my case, where
my first resonant
Kevin Haskins;452674 Wrote:
A tool like the SMS-1 (Velodyne) is a great investment. If your smart,
you can also use it's built-in room measurement tools to optimize the
placement of your main speakers. You don't get to keep it in the loop
but just having the measurement gives you more
DC,
It is a small room. Lots of accoustic treatment, bass traps, accoustic
absorbers behind the MLs which improved things, but still not great. My
120Hz problem could easily have been a harmonic, but I would have
thought I would have spotted the 60Hz peak. It has been a while since I
set it
Since I design and sell subs I'm a little biased.
Good LF performance is all about rooms. Once you get under about 200Hz
the room really starts to dictate what is going on. Matching subs to
main speakers has also traditionally been done horribly. Since the
room is having it's way at these
Newbuyer,
I have a Revel B15 sub and Martin Logan ESL hybrids. I use a Krell
processor and Krell amplification for the MLs, the Revel has its own
internal amp driven from the Krell processor.
I use this set up both for critical listening (2 channel plus sub) and
as the core of a home cinema
I agree that many audiophiles dismiss subwoofers without actually trying
them for several reasons:
1. Buyer's remorse regarding the use of a high pass filter that
actually cuts signal from speakers they've made a significant financial
and intellectual investment in.
2. Many subwoofer
thx for your responses guys. Based on the general lack of response I
have to conclude that most think its a daft idea or don't feel equipped
to comment.
--
egd
'*Transporter*'
(http://www.logitechsqueezebox.com/products/transporter.html) '*SCA2*'
(http://www.atc.gb.net/sca2.htm) '*SCM100SL
I use a HSU 12 ported sub from some years back when they were round! I
love it! The round cabinet is much tighter than a square one. It doesn't
vibrate at all.
The thing I like the most is that I can put it behind my listening
position and not have to run a long interconnect. The amp was
I rather think it's the later, if you haven't experimented with sub's in
a high end system, you might not appreciate what they can do. I
mentioned earlier, that I like what a satalite/subwoofer system can do.
In my living room right now, I've got a pair of BW 705's with a 750
sub. To my ears,
egd;452004 Wrote:
thx for your responses guys. Based on the general lack of response I
have to conclude that most think its a daft idea or don't feel equipped
to comment.
So true. WARNING! GROSS GENERALISATION ALERT! Most audiophiles look
askance at subwoofers. The feeling is that breaking
Interesting discussion. What do members here think please, regarding
stereo (not home-theater) use, and using a separate active crossover
unit? I.e. actively crossing over highs to monitors, and lows to sub(s)
through a separate device placed between source and amp/subs...(?)
--
NewBuyer
I have found that affordable active crossovers impose too much of a
sonic signature on the sound and now use a passive line level high pass
filter(Marchand XM46) with an active parametric low pass bass management
device(ONIX RDES).
--
konut
For the most part, I agree with Mr Hardesty's approach. I use a passive
high pass filter, but a 4th order, not first. 6db per octave is just too
shallow and minimises the benefits pointed out about the lowering of
mains speaker and mains amp distortion. The penalty, of course, is the
group delay
The Vandersteen 2Wq crossover technique is definitely unusual It
looks like a high pass filter is used before the the main power amp as
usual, but then this amplifier's output is sampled and the low
frequencies boosted to drive the sub amplifier. Any colouration in the
main power amp's
I asked the question before in the recent biamp thread and am interested
in more views/ responses. Thx DCtoDaylight for your response, feel free
to elaborate here :-)
A while ago I read a few of Richard Hardesty's Audio Perfectionist
Journals, which I found quite interesting. In journal # 2
39 matches
Mail list logo
