Please excuse (and move) if this is in the wrong forum. It seems like it should be in one of the Amplifier forums but I wasn't sure which to put it in.
I have an old Yamaha amplifier (RX-V392) that has two main stereo outputs (A and B). I think of it as a stereo 4 ch. Left out from output A is in phase with left out from output B, which allowed me to use both outputs at the same time to power two pairs of speakers in stereo. Essentially I had two left and two right speakers. I upgraded from those two pair to one single 8 ohm pair (JBL Arena 130). I want to bridge the the 4 outputs to two stereo outputs and I have three questions.
1. If the new pair of speakers are 8 ohm, what is the load to the amp if I bridge the 4 outs?
2. What is the correct way to wire this setup?
3. Will I need phase inverters?
I think the amp is stable at low ohms (and am willing to chance it). Manuals for the amp and speakers are attached. Thanks in advance for any help!
I have an old Yamaha amplifier (RX-V392) that has two main stereo outputs (A and B). I think of it as a stereo 4 ch. Left out from output A is in phase with left out from output B, which allowed me to use both outputs at the same time to power two pairs of speakers in stereo. Essentially I had two left and two right speakers. I upgraded from those two pair to one single 8 ohm pair (JBL Arena 130). I want to bridge the the 4 outputs to two stereo outputs and I have three questions.
1. If the new pair of speakers are 8 ohm, what is the load to the amp if I bridge the 4 outs?
2. What is the correct way to wire this setup?
3. Will I need phase inverters?
I think the amp is stable at low ohms (and am willing to chance it). Manuals for the amp and speakers are attached. Thanks in advance for any help!
No.
Your basic understanding is flawed to the extreme.
Therefore your three questions are un-answerable.
It has, and I quote from yamaha themselves...........
5-CHANNEL HOME THEATER RECEIVER WITH DOLBY PRO LOGIC AND CINEMA DSP
The RX-V392 is a 5-channel receiver providing superb Pro Logic performance and processing and Yamaha's Digital Sound Field Processing, and Cinema DSP.
DISCRETE POWER TRANSISTORS
Discrete power transistors rather than IC chips are used in the amplifier section to provide the cleanest sound possible. The amp delivers 50 watts each to the three front channels and 20 watts each to the rear surround channels.
Your basic understanding is flawed to the extreme.
Therefore your three questions are un-answerable.
It has, and I quote from yamaha themselves...........
5-CHANNEL HOME THEATER RECEIVER WITH DOLBY PRO LOGIC AND CINEMA DSP
The RX-V392 is a 5-channel receiver providing superb Pro Logic performance and processing and Yamaha's Digital Sound Field Processing, and Cinema DSP.
DISCRETE POWER TRANSISTORS
Discrete power transistors rather than IC chips are used in the amplifier section to provide the cleanest sound possible. The amp delivers 50 watts each to the three front channels and 20 watts each to the rear surround channels.
Chee whiz:
is this a stereo amplifier with switchable speaker outputs or is it a 5channel amplifier?
is this a stereo amplifier with switchable speaker outputs or is it a 5channel amplifier?
Have a look at the speaker connections diagram in the manual. This is a 5ch Dolby amp but it also has two sets of outputs for the main/front stereo out. These are the A and B outs I mention. In the front of the unit there are two buttons labeled A and B which engage/disengage output for those channels.
Yes but electronically you don't have 4 descrete front channel amplifiers you only have 2, or in other words A and B speakers both connect to the same amplifiers so there is nothing to bridge.
I see. So when I had a pair of speakers hooked up to A and another set connected to B, they were sharing the output of the two channels? Meaning the 50 watts available for the left channel was split between both left A and B outputs and same for the right channel? Does that mean each left speaker was actually seeing 25 watts? And each right speaker 25w?
It depends on what the amp is capable to give at 4 vs 8 ohm or whatever impedance you had.
One speaker might get 30w while the other 20w, or one speaker got 40 and the other 30w, or something competely different. (Assuming you maxed out the amp.)
Checked that manual, it seems like the amp can drive an 4 ohm load depending on an "impedance selector". But the manual doesn't give any power rating at 4 ohm.
One speaker might get 30w while the other 20w, or one speaker got 40 and the other 30w, or something competely different. (Assuming you maxed out the amp.)
Checked that manual, it seems like the amp can drive an 4 ohm load depending on an "impedance selector". But the manual doesn't give any power rating at 4 ohm.
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Thanks. So we are all in agreement that bridging is not possible as there are not really 4 separate channels. Rather there are two channels, each with two outputs per each channel. (plus the other channels for rear, center etc, but I'm not trying to bridge with those)
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