Extension jack for Transformer mounted on speaker
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Extension jack for Transformer mounted on speaker
Hi, for this sort of arrangement, with an OT on the speaker directly, can I simply run wires from the tabs on the speaker to a jack (mounted on a rear panel) and use that for a larger speaker of the same impedance.
Re: Extension jack for Transformer mounted on speaker
If you run a second speaker in parallel, you will be lowering the impedance seen by the OT. You could simply disconnect the OT secondary wires from the existing speaker and connect them to a jack. Then plug whatever speaker you want into the jack.
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Re: Extension jack for Transformer mounted on speaker
Ok sure, maybe set up an external jack from the OT and put a male jack on the speaker tabs,
Thanks
Thanks
Re: Extension jack for Transformer mounted on speaker
Yeah, LOL, I think we call that thing a plug. Right idea, hard wire the plug to the speaker, or use spade lugs that fit tightly. Just take care that they don't slip off the speaker tabs or you'll be running with no load.
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Re: Extension jack for Transformer mounted on speaker
I would use a switching jack and wire it such that with nothing plugged in the OT will be connected to the internal speaker. But as soon as you insert a plug the internal speaker is disconnected and whatever speaker is on the other end of that plug/cable will be connected to the OT.
Re: Extension jack for Transformer mounted on speaker
Steve, might you supply a quick schematic? This is for a speaker mounted transformer.
Re: Extension jack for Transformer mounted on speaker
Makes no difference where the OT is physically mounted...
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Re: Extension jack for Transformer mounted on speaker
This? Corrected for the 12A tabs
Last edited by angelodp on Tue Dec 28, 2021 2:09 am, edited 2 times in total.
Re: Extension jack for Transformer mounted on speaker
Do you find your drawing easier to understand than my drawing?
Have you installed the iso transformer?
Have you installed the iso transformer?
Re: Extension jack for Transformer mounted on speaker
Your schematic is quite clear, just trying to translate to a layout.... not good? Iso Transformer is on the way.
Re: Extension jack for Transformer mounted on speaker
I am looking to confirm the impedance of this speaker and when I read the terminals I consistently get .5 ohms? Schematic calls for 8 ohm so I should be seeing about 6ohms on the meter. With the transformer mounted on the speaker, is that affecting my reading?
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Re: Extension jack for Transformer mounted on speaker
OT secondary is a short length of thick wire.
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