Bridged Amp Question: WWYD

To many ads? Support ODJT and see no ads!
ahoustondj

ahoustondj

Mac Daddy DJ
Aug 13, 2007
20,235
3,465
Texas
I had a question posed to me and I was wondering if there is a standard for bridging power amps. The amp is an old one and no manual is available. There is a Stereo/Mono switch on the back. Output terminals pairs (Banana) or not near to each other. Where would you plug in your signal cable and speaker cable.

My guess on this is, first switch to Mono
Then Plug Signal Cable into Channel A
Then Plug speaker wire into Channel A Speaker Outputs.
WWYD?

On my Peavey Amp the Speaker cable is connected to Pos to Positive on Channel A Spkr Output and Negative to the Pos on Channel A Spkr Output.
 

Attachments

  • PL380_rear.jpg
    PL380_rear.jpg
    53.1 KB · Views: 2
By the way my speakons are wired for bridged mono and I plug into Channel A. Edit: Does the mono button indicate Bridged or is it just a mono signal as in parallel (Meaning both channels get the same signal using input A or #1) ???
 
Is that true for ALL Power Amps? On the Amp In question, the terminals are not that close, Channel A Speaker output jack is on the left side of the amp and Channel B Speaker output jack is on the right side of the amp, which means a regular banana plug won't work.
 
Not necessarily. Maybe the amp cannot be bridged and without knowing what the impedance limits are it's risky. What brand and model is the amp?
 
Similar Photo

Here is a photo of another model of the amp in question. Notice the connections and the stereo Mono switch.View attachment 15626
 

Attachments

  • 07-17-09-153-P1290623.jpg
    07-17-09-153-P1290623.jpg
    45.9 KB · Views: 13
DJ SVO said:
Not necessarily. Maybe the amp cannot be bridged and without knowing what the impedance limits are it's risky. What brand and model is the amp?
Click to expand...

Unisync Model 200. 200w per ch into 8 ohms. They don't make them anymore and they can be bridged as they have that switch in the back. See the photo.
 
I'm not sure Houston. Let's hope somebody knows about it and chimes in. As you mentioned there's almost no information about it online.
 
There are ways to bridge amps that are not equiped with a bridging switch. But without a Bridging rectifier you are running the risk of destroying the amp.
 
I'd leave that dinosaur on the shelf and buy a amp that can be bridged, or one that has enough gonads to do the job in stereo.
 
Precisionpower said:
I'd leave that dinosaur on the shelf and buy a amp that can be bridged, or one that has enough gonads to do the job in stereo.
Click to expand...

The one in the pic is not the one I have. The one I have (200w per Ch)still works up to this day and is used to power tweeters in a 3 way electronic crossover system. Actually I have three of those in reserve.They are brute force amps.
 
I'm no expert... but this amp doesn't appear to be designed for true bridging operation ~ combining both output channel rails into one. Many older pro power amps were not. :)
 
You must log in or register to reply here.
Top Bottom
Back