OT for quad EL84 amp
Moderators: pompeiisneaks, Colossal
OT for quad EL84 amp
Hey all. I am converting an old Magnavox chassis to a guitar amp. It uses 4 el84's, and 2 12ax7's. It was a stereo amp with two Output trannies, which have been removed for a single OT. I'd like to wire it up to Orange specs, maybe an AD30 or similair . What specs would I be looking for or is there one you would recommend?
Owner/luthier of Flintrock Guitar Shop, Flint, MI.
Owner of Hawkins Effects Pedals
Owner of Hawkins Effects Pedals
- martin manning
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Re: OT for quad EL84 amp
You could parallel the two original OT's and mismatch the secondary to run 4x EL84.
Last edited by martin manning on Wed Jan 01, 2014 7:12 pm, edited 2 times in total.
- The New Steve H
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Re: OT for quad EL84 amp
I don't know the first thing about Orange amps, but I just made a 4-EL84 amp that sounds fantastic, and I used a Classictone 40-18064.
Relax. It's SUPPOSED to smoke a little.
Re: OT for quad EL84 amp
For 4 EL84's most likely Orange used 4k primary OT.
Re: OT for quad EL84 amp
That's a great deal on that Classic Tone! Just might be the ticket. Its a 6.6k.
Owner/luthier of Flintrock Guitar Shop, Flint, MI.
Owner of Hawkins Effects Pedals
Owner of Hawkins Effects Pedals
Re: OT for quad EL84 amp
That is the Trainwreck Express transformer I would get something else.
- martin manning
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- Location: 39°06' N 84°30' W
Re: OT for quad EL84 amp
I agree with Mark it'd be better with a 4k Zaa... Classic Tone 18-049 (AC30 OT) $76.
Re: OT for quad EL84 amp
I agree with Martin that AC30 is great.
The 40-18020 HRD 40W is 4k2.
The 40-18020 HRD 40W is 4k2.
- martin manning
- Posts: 14308
- Joined: Sun Jul 06, 2008 12:43 am
- Location: 39°06' N 84°30' W
Re: OT for quad EL84 amp
And cheap, too!M Fowler wrote:The 40-18020 HRD 40W is 4k2.
Re: OT for quad EL84 amp
Thanks guys, I'll get the AC30 one.
Owner/luthier of Flintrock Guitar Shop, Flint, MI.
Owner of Hawkins Effects Pedals
Owner of Hawkins Effects Pedals
Re: OT for quad EL84 amp
Too bad the HRD model has no 16 ohm tap...all my cabs are 16. It's a much nicer price.
Owner/luthier of Flintrock Guitar Shop, Flint, MI.
Owner of Hawkins Effects Pedals
Owner of Hawkins Effects Pedals
Re: OT for quad EL84 amp
If your cabs are 212 you could wire them to see 8 ohms.
Re: OT for quad EL84 amp
No you can't.
If its a 212 at 16 ohms its 2 8 ohm drivers.
Parallel gives you 4, series gives you 16.
Unless you mean wire 2 cabs parallel.
John
If its a 212 at 16 ohms its 2 8 ohm drivers.
Parallel gives you 4, series gives you 16.
Unless you mean wire 2 cabs parallel.
John
Do not limit yourself to what others think is reasonable or possible.
www.johnchristou.com
www.johnchristou.com
Re: OT for quad EL84 amp
Yeah your correct my bad I was thinking one could wire it for 16 ohms.Cantplay wrote:No you can't.
If its a 212 at 16 ohms its 2 8 ohm drivers.
Parallel gives you 4, series gives you 16.
Unless you mean wire 2 cabs parallel.
John
Probably why I never buy 16 ohms speakers if I can help it.
http://www.eminence.com/support/wiring-diagrams/
If he has two 8 ohm speakers then he should run them parallel for 8 ohm load not 16.
Re: OT for quad EL84 amp
I think mark meant 4 ohms in parallel