Hi ,
Can i use Balanced output from my preamplifier to get splitted RCA signal from hot/cold and neutral pins to drive L+R channel of an amplifier and take output from hot pins of amplifier output thus making a bridge and hence converting a stereo amplifier into monoural bridged amplifier ?
Just wanted to know before making any go ahead....would simply cut the female XLR connector and attatch 2 RCAs on each output for my twin Yamaha B-5 amplifier.....want to have 2 monoblocks.......700W/channel into 8 ohs, and 60 W Class A per amp in Yamaha B-4 amp?
Please suggest
Can i use Balanced output from my preamplifier to get splitted RCA signal from hot/cold and neutral pins to drive L+R channel of an amplifier and take output from hot pins of amplifier output thus making a bridge and hence converting a stereo amplifier into monoural bridged amplifier ?
Just wanted to know before making any go ahead....would simply cut the female XLR connector and attatch 2 RCAs on each output for my twin Yamaha B-5 amplifier.....want to have 2 monoblocks.......700W/channel into 8 ohs, and 60 W Class A per amp in Yamaha B-4 amp?
Please suggest
Your balanced XLR has a GROUND and two outputs wich are in opposed
phase , so you just have to use Ground/+ ouput for a RCA connector
and Ground/-output for the second one and plug onto right and left channel.
By convention the right channel hot pin output will be used as +
and the left channel HOT PIN output as -/VIRTUAL GROUND to connect the speaker.
phase , so you just have to use Ground/+ ouput for a RCA connector
and Ground/-output for the second one and plug onto right and left channel.
By convention the right channel hot pin output will be used as +
and the left channel HOT PIN output as -/VIRTUAL GROUND to connect the speaker.
i intend to use this Behringer DI box for unbalanced to balanced convertor:with two unbalanced inputs i can have upto 8 outputs, high input impedance of 1Mohm, 600 ohm output impedance, plus it has a ground lift switch.
But what about the conversion Andrew T, can i do it this way , i cannot understand what is being said here. my apologies. whats the difference in splitting the Balanced output from DI800 with ground lifted run each channel with hot/cold pin 2/3 and ground pin and take outputs from both hot terminals of speaker, in this way i would not have to open and modify amplifier ?
Is it doable?
But what about the conversion Andrew T, can i do it this way , i cannot understand what is being said here. my apologies. whats the difference in splitting the Balanced output from DI800 with ground lifted run each channel with hot/cold pin 2/3 and ground pin and take outputs from both hot terminals of speaker, in this way i would not have to open and modify amplifier ?
Is it doable?
As pointed by Zenmod , if it s not a mock XLR , it s possible...
The signals are referenced to ground not to the chassis if it s
a safe XLR.
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This is exactly CORRECT !
In as much as Pin #1 of an XLR connect is NOT part of the audio circuit, it should not be used as a reference or as part of the audio circuit.
considering that most of unbalanced to balanced and VV conversion is made electronically , it's safe to presume that any of these conversion circuits can't operate without gnd as reference ;
so - yes .
simple test , without too much of useless brainwashing - feed it with some signal , then measure both outputs ( meaning both pins 2 and 3 ) against gnd (pin 1 ) ; if you have same reading , circ is certainly symmetrical ;
observe difference between terms balanced and symmetrical
symmetrical is balanced which is referenced to some potential , usually GND
(just) balanced doesn't need to be referenced - it can consist just of two leads/points
example - if you have xformer as part of a circuit (in or out , whatever ) , winding is symmetric balanced if center tap is connected to gnd
if CT isn't connected to GND , it's (just) balanced
Are you directing your question at my post or another one?
Pin 1 of the XLR is supposed to be connected to chassis ground right there at the jack.
Originally, the use of balanced circuits in audio/telephone was for the cabling only. A twisted pair cable with balanced (equal + and - signals) rejects noise. This is useful for long cable runs. For home use, the benefits are debatable in my opinion. If you live near a radio station where there's a lot of RFI, then balanced cabling at home makes sense to me.
dirkwright the first objective is to have two monoblocks from two, 2CH amplifiers, each is rated 350W into 4 ohm load per channel , so i expect 700W into 8 ohm per monoblock, a great deal of headroom, excellent channel separation, greater current carrying capacity per channel to handle transients and using less stressing of each amplifier at lower/moderate listening levels and therefore less THD. just wanted to check that if its doable and has anyone done it before .regards
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