https://guitarnoise.forum/live-sound/tube-amp-external-speaker/ Guitar Noise Discussion Board en-US Thu, 04 Jun 2026 15:16:31 +0000 wpForo 60 https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-282883 Thu, 28 Feb 2008 01:56:43 +0000 Live Sound 97reb https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-282883 https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-282831 Wed, 27 Feb 2008 21:32:54 +0000 Live Sound Ricochet https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-282831 https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-282826 Wed, 27 Feb 2008 21:24:02 +0000 To: Customer Service1
Subject: Epiphone Valve Standard Tube Amp

I have an Epiphone Valve STANDARD, 15 watt tube combo. It has two
speaker outputs in the back. One of them is being used already by the
built in speaker and it is labeled "Speaker - 8 OHM". The other one is
labeled "8 Ohm min".

Can I plug in another 8 ohm cab and leave the internal
speaker plugged in, or do I need to unplug the internal speaker before
plugging in another 8 ohm cabinet?

Thanks,
Dave You can plug in another 8 ohm external speaker without unplugging the internal speaker. Thank you for the inquiry.

Regards,
Roger Ball
Gibson customer service
service@gibson.com Sweet. I'm going to crank her tonight!]]> Live Sound Riff Raff https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-282826 https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-282659 Tue, 26 Feb 2008 14:44:45 +0000 Live Sound Riff Raff https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-282659 https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-282636 Tue, 26 Feb 2008 06:12:32 +0000 Live Sound MrJonesey https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-282636 https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-282590 Tue, 26 Feb 2008 01:29:37 +0000
I'm glad you read your manual. :D

It may not hurt your amp to run at 4 ohms, but why take a chance? I am no electronics expert by any means, but I believe impedence matching is more critical with solid state amplifiers. Ohms is a measure of resistance. The lower the ohms, the lower the resistance to current flow. When you operate an amp below it's recommended minimum impedence rating, it's pretty much like turning your amp into an electric toaster. :shock:

So yes, if you want to use an external speaker or cab, disconnect the internal speaker. The silly thing to me is, why give a person two Speaker Out jacks? It's just asking for trouble.

You could run two 16 ohms speakers or cabs off each jack safely though.]]> Live Sound Wes Inman https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-282590 https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-282401 Sun, 24 Feb 2008 06:29:14 +0000 Live Sound Ricochet https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-282401 https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-282358 Sun, 24 Feb 2008 00:53:56 +0000
Epiphone Valve Standard DSP
...
Speaker: Special Design, 12”, 8 Ohms

"Speaker Outputs (Rear Panel-Valve Junior, Valve Special, Valve Standard)
Allow you to run the output of your amplifier to an external speaker cabinet.
Rating: Valve Junior: 4 Ohms. Valve Special and Valve Standard: 8 Ohms"

I have the Standard. So mine is 8 Ohms total. I think I have to disconnect the internal speaker before I connect an external one. What do you think?]]> Live Sound Riff Raff https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-282358 https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-282352 Sun, 24 Feb 2008 00:01:45 +0000 total load. Anything under that can cause the amp to overheat and possibly damage it.

The Epi Valve amps in this series (I own the head version) will operate down to 4 ohms.]]> Live Sound Wes Inman https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-282352 https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-30442 Sat, 23 Feb 2008 21:07:24 +0000
Thanks,
Dave]]> Live Sound Riff Raff https://guitarnoise.forum/live-sound/tube-amp-external-speaker/#post-30442