trinityamps.com

Hi Trampsters!

Short-term lurker - first time poster.

After doing a bit of research here and elsewhere, I'm keen to grab a tramp kit and get cracking on my first amp build. Have been building pedals and making small mods to tube amps for a few years, and am really enjoying the ride so far. A bit too much, some might say. You guys are sad addicts. And I want to be one too

I have a 'spare' 16 ohm 12" celestion gold (replaced one from a pair in a 2x12 with a v30). At first I was thinking i'd pick up a tramp head kit and cabinet, and run it with the gold as a 1x12. But I understand now that head cabs from trinity are not always available, and indeed Stephen recently informed me that this is the case at present. I was a bit unresolved on head v combo anyway, so then i was thinking to pick up a combo cab big enough to fit the 12". But having given it a little more thought, I'm now warming to the idea of a nice 10" and plugging in the 1x12 when needed. I'm not really that keen to have to mess around with custom cabinetry and wotnot, so this would mean I could still grab a cab from trinity at the outset.

Question is, are there any real issues to consider running the 10" internal speaker WITH the 12" external cab at the same time?

I understand that speaker efficiency will be a factor (maybe a more efficient 10" than the gold?), and that there's a a bit of a "suck it and see" element to combining speakers of whatever ilk. I've also read that people don't generally combine 10s and 12s for a good reason - its a bit pointless?

Regardless, in terms of speaker impedences, given the gold is 16 ohm, would i be better to run with a 16 ohm 10" for the combo, with the intention of running both in parallel at 8 ohms on occasion (if it turns out to be good); or is the plan to run both at once a little misguided and/or of little advantage - and so i'd be better off with an 8 ohm 10" that disconnects when when an external cab is plugged in.

Any views out there from those with more experience!
Thanks
Brad

You could always put that 12" in the Tramp. The Tramp cabinet/baffle can be modified to fit a 12" speaker, search around the forum and you'll see many Tramps have been done this way.

That said it might be cool to do a standard 10" combo and have an external 12" cab (you can never have enough cabs). The second cab with a different speaker would add it's own unique tone and add some harmonic richness to the sound.

Get both speakers @ 16R. They can be run at 16R on their own or 8R together in parallel.

16R speakers are also better because then you use the OT full winding.

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http://pdfelectronics.com

Thanks kurtlives - appreciate your thoughts and assistance!

Would be a good idea to keep 10" in and 12" out but you can make most 12" speakers fit if you want to make a few sacrifices like good access to the output jacks.

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Stephen
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