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Re: SPEAKER WIRING
Is it possible to do the wiring as the attached diagram suggests?
I found this on the net and wondered if it was a solution to my problem as I have 8 ohm speakers?
Mono/Stereo in same cabinet
4 Musical Intrument Speakers. Mono/Stereo selectable by using a Switch.
**Option 2**
4 - 8 ohm speakers = 16 ohms to each channel if run in Stereo, 8 ohms in Mono mode.
Is this in your opinion correct? I really don't know
The Right channel jack is completely disconnected when in Mono Mode. Do Not alter this configuration (you risk doing serious damage to your power amps if wired differently).
Mouser Electronics Sells 1/4 inch phone jacks that have a built in DPDT switch - the switch contacts are electrically isolated from the 1/4 inch Jack connection (they have to be in order for you to wire this correctly) - Marshall used this type of Jack/Switch to automatically set the speaker selection mode. They are expensive and prone to failure over time, however, using them often simplifies set-up of your rig. If you decide to use these, the Mono/Stereo switch functionality would be associated with the Right channel, where when nothing is plugged into the Right channel, the cabinet is operating in Mono Mode.
WARNING: Never run a Tube Type power amp to the Right channel if the switch is set to Mono mode - it will damage the output transformer.
NOTE: If you want Tweeters or Piezos in this configuration, you will need 2 of them, 1 per set of Woofers. This is because the speakers can be operated as seperate channels, using 2 completely different power amplifiers. The Tweeters or Piezos will be wired in parallel with the Woofers. The same arrangement as the above Dual Impedance systems.
WARNING: The Left and Right jacks cannot be mounted on the same metal plate (serious damage to some power amps will occur if you do this). Use a seperate jack plate for each channel, mounted on a non-conductive surface
Thanks for all your help so far
Last edited by Mr69bungle; 05-20-2009 at 12:48 PM.
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