Center Channel Bridge?
chastew
found on Jolida web page. I have been trying to get multi channel like they are
talking about but with no luck on center channel. What exactly is meant by
"bridge" one (amp) for your center?
Thanks for your help.
Newbie...
FROM JOLIDA LISTED UNDER TUBE AMPLIFIERS:
Put three of these amps together and run your home theater
with them,you won't believe the sound!
How?
1. Bridge one for your center channel.
2. Use one stereo amp for your front channel.
3. Use one stereo amp for your rear channel.
Connect them to the 5.1 outputs of a pre-amp
processor or even use the processor output from a DVD player
and you have a great 5.1 system and great stereo!
You don't have to compromise the quality of your music just to have
Home Theater 5.1. It works great I've set up many of these tube home theaters
and everyone loves them!
Buffstereo
a somewhat incorrect manner for tube amps, although they are hardly the only
folks to do so. Specifically what is meant here, is to tie the inputs together
for a single input instead stereo, and also tie the outputs together for a mono
output. The simplest way to tie your inputs together is by using an RCA "Y"
cable, with the arms of the Y attaching to the amplifier's RCA signal inputs
and the tail of the Y attaching to your surround sound processor's center
channel output. Next, you need to tie your outputs together. You will be
using only one speaker cable to connect to that center speaker to one channel
of the amp, but read further here: Make or buy a couple of jumper cables with
spade lugs, (U shaped ends). Connect the speaker grounds marked "0" or "G"
together. If your center channel speaker is, for example, 8 Ohms, you will
need to tie the 16 Ohm outputs together, marked "16", but if you speaker is 4
Ohms, you have to tie your 8 Ohm terminals together instead, ("8"). The reason
for this apparent mismatch is due to the fact you've paralleled impedances of
the output transformers, reducing the impedance seen by the speaker by half.
Generally, matching impedances between output transformers and speakers gives
'maximum power transfer' with a minumum of distortion. Strapping the 8 Ohm
outputs together and connecting to an 8 Ohm speaker WILL work, (and even be
louder), but with noticably higher distortion. This assumes your amps are
being operated with Pentode outputs and not triode connected. Triode
connection tends to make an amp function best from LOWER impedance outputs. I
use a pair of Eico ST-40 integrated amps with 7591s to drive my tweeters. The
inputs are similarly strapped together, and the strapped outputs are connected
to 16 Ohm horns from paralleled 8 Ohm outputs. Sounds good to me! :) The
nice thing about this sort of experimentation, is that the amplifier hasn't
been permenantly altered, which lowers it's value, and changing back is quite
simple. Why not use cheapo, Radio Shack supplies to experiment with, and see
if it pleases you. You can always buy more costly wires, cables etc. later if
you like the effect. I make my own interconnect cables from microphone wire
and braid 14 gauge solid core wire for speaker cables. I haven't bought "magic
wire" or 'boutique' parts for a while and there're not missed sonically.
rec.audio.tubes really opened the door for me, to better sound at working man's
prices! :) Good luck with your gear!
Robert Thompson
Live and let live!
Doug Schultz
positives of the front main speakers. use the bridged amp for your sub
center channel si phased so that positive center channel is on the positive
of on side and negative center is on the poitive of the other side
Doug
"chastew" <cha...@aol.com> wrote in message
news:20020721102446...@mb-mp.aol.com...
Kalman Rubinson
<Douglas...@hotmail.com> wrote:
>YOu should be able to just connect the center channel across the two
>positives of the front main speakers. use the bridged amp for your sub
>center channel si phased so that positive center channel is on the positive
>of on side and negative center is on the poitive of the other side
Hard to understand what you are saying but connecting "the center
across the two positives of the front main speakers" will give you a
difference signal in the center channel. That's much worse than a sum
which is what I think you expect. Better to just leave it off if you
cannot feed it with the dedicated center channel signal.
Kal
Doug Schultz
they turned it 90deg. out of phase
"Kalman Rubinson" <k...@nyu.edu> wrote in message
news:n5mrjuoponfk4qi86...@4ax.com...
Kalman Rubinson
<Douglas...@hotmail.com> wrote:
>that is how the center channel is encoded into stereo music apparently.
>they turned it 90deg. out of phase
Really? That's very dependant on the mixing/mastering in each
recording. Besides, if that is so, then you would never get a
center-fill with two speakers, something that good systems do all the
time. I stick with my earlier advice: If you do not have a dedicated
center channel signal (or a good electronically-derived one like
Meridian's), stick with two speakers.
Kal