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Q & A / Re: Bass through Guitar amp?
« Last post by EdBass on Yesterday at 07:19:06 pm »
For a short stint in the mid 60's, John Entwistle played Sunn 100S guitar amps through 200S bass cabs. Worked great, also the Reeves era Hiwatt amps were designated "AP" for "all purpose", powerful clean amps that amplified whatever you put into them. Same concept with Marshall's but not as clean, the larger Brit amps associated with bass use, Hiwatt DR201, Marshall Major, were often used for bass because they were more powerful rather than them being designed for bass guitar. The lower the frequency the more power you need to get the desired SPL.
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Q & A / Re: Bass through Guitar amp?
« Last post by Isaac on Yesterday at 09:27:20 am »
As Ed says, the amp won't care. Speakers, on the other hand, have two potential problems. Guitar speakers aren't designed to go particularly deep, so they usually don't have a good bass sound. And if you try to push them to make a good bass sound, then they can be damaged. Neither should be a problem if you're playing by yourself at relatively low volume, though.

The amp, being a guitar amp, isn't going to be optimized for bass, so it might not be able to produce a good sound, but it won't be damaged by trying. Lots of bass players get a great bass sound out of the old tube guitar amps such as the Sceptre and the Sentura heads. I have, many times.

Once, in my early days, I was playing bass through a small guitar combo amp, and the speaker burst into flames. Fortunately, that was on the last song. So, yeah, bass through guitar speakers, not a good thing.
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Q & A / Re: Did I Blow My 200s?
« Last post by Smoothwound on Yesterday at 06:51:53 am »
That's probably what happened then, as it had not been used for many years. I will pass this along to the amp tech when I bring it in. Thanks!!

David
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Q & A / Re: Bass through Guitar amp?
« Last post by EdBass on July 21, 2018, 11:21:30 pm »
The amp doesn't care, some guitar speakers/cabs might not work as well for bass as they do for guitar frequencies.
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Q & A / Re: Did I Blow My 200s?
« Last post by loudthud on July 21, 2018, 08:35:01 pm »
The extension speaker jack is unique in that it has an isolated switch that is activated when a plug is inserted. This switch changes the tap on the output transformer so that the proper load is seen by the output tubes. The contacts of the switch may be corroded if the jack has not been used for a few years. Plugging the monitor into the extension jack may have aggregated the problem. Replacement of the jack is possible, but the part will be hard to find. I believe the proper replacement is the Switchcraft type 13A.
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Q & A / SS Question
« Last post by Blue1Solo on July 21, 2018, 12:11:48 pm »
Who was the designer of Sunns Solid State Amplifiers? I have heard it was the same person who Designed Ampegs SS Line..??? Thanks.
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Q & A / Bass through Guitar amp?
« Last post by Blue1Solo on July 21, 2018, 12:01:35 pm »
Can I play Bass Guitar through a Sunn 100 Watt Guitar amp..without causing a meltdown? Thanks.
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Q & A / Re: Did I Blow My 200s?
« Last post by EdBass on July 21, 2018, 08:54:43 am »
The good news is that a 200S is a very easy amp for a tech to work on, pretty straightforward and basic. Nothing weird or exotic, even the transformers are available fairly reasonable if either one of those end up being the problem.
 
Good Luck!
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Q & A / Re: 6AN8A Substitute/Replacement
« Last post by EdBass on July 21, 2018, 08:47:35 am »
I agree with Ryan, 6AN8's are easy to get at least for now, and squirreling away a little stash should hold pretty much anyone over for quite awhile. I think an adapter to use 7199's would be pretty easy to make (or maybe find one already being made as 'thud mentioned) should 6AN8's ever become unobtanium.
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Q & A / Re: 6AN8A Substitute/Replacement
« Last post by loudthud on July 20, 2018, 10:14:01 pm »
AES ( www.tubesandmore.com ) sells an adapter that lets you use a 6GH8A in place of a 7199. I thought there was an adapter that lets you use a 6U8 in place of a 6AN8, but I can't find it now.
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