Celestion Alnico Blue - how does it handle pedals?

That elusive piece of the overall equation, so many options and so little time to test them all — Celestion, Fane, Eminence, Jensen, JbL, Utah, Ceramic, Alnico, 1x12, 2x12, 4x12, 2x10, 4x10, 1x15, 2x15, 4x15, 1x18 and I'm sure there are even more!

Celestion Alnico Blue - how does it handle pedals?

Postby tubesurfer6 on Thu Oct 01, 2015 10:52 pm

I have this old Silvertone 1432 amp from the late 50's, it's got an 2x 6V6 output section and is rated at cca. 12w I think.

I've been running the amp through a very old (but in perfect condition) Jensen P12R and it sounds great but I'm afraid to toast the speaker by using fuzz and boost pedals.

I recently switched to the Alnico Blue (a recent one) and although I prefer the Jensen I'd gladly stick with the Blue if you guys could tell me that it will handle my fuzz and boost pedals (Ge FF ans SHO) without any issues.

Btw, I'm running it from the 8 ohm tap on the OT to an 8 ohm speaker. Would I get any more volume out of the amp by using the 4 ohm tap on the OT and 4 ohm speaker?
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Re: Celestion Alnico Blue - how does it handle pedals?

Postby OldSchoolDave on Fri Oct 02, 2015 1:25 pm

tubesurfer6 wrote:I recently switched to the Alnico Blue (a recent one) and although I prefer the Jensen I'd gladly stick with the Blue if you guys could tell me that it will handle my fuzz and boost pedals (Ge FF ans SHO) without any issues.


Not much room for error between a 12w amp and a 15w speaker, especially when pumping boost and square waves into it. If you like the Jensen sound, perhaps a Weber clone with higher capacity would be a good compromise?

tubesurfer6 wrote:Btw, I'm running it from the 8 ohm tap on the OT to an 8 ohm speaker. Would I get any more volume out of the amp by using the 4 ohm tap on the OT and 4 ohm speaker?


Speaker efficiency is going to make more difference in SPL.

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Re: Celestion Alnico Blue - how does it handle pedals?

Postby Unit_1 on Fri Oct 02, 2015 2:21 pm

If you prefer the Jensen sound you can upgrade to a p12q (40 watts) or my fav a p12n. super clean chimey, heavenly jensen sound.... and it barks nice too

these are kinda pricy, but in my opinion worth every penny

the celestion that is supposed to be closest to the blue is the gold, and it too carries a hefty price tag. It's also a 50 watt.

for the lowest prices on celestion speakers available in the entire world, go to http://avatarspeakers.com/home/ (no affiliation except I own a avatar 4x12, and Dave is a super nice guy that collects vintage guitars). They order speakers by the 40 footer to get such a steep discount.

He also has Eminence Speakers in stock

He cannot print the pricelist because it is so low. So you have to email him, and usually you'll get a response in less than four hours. However I am not constricted by these rules so here is the price list he emailed me last year. Just remember, the blue and the Jensen are alnico magnets and have a distinct difference from the ceramic magnets. Most of the celestions on this list are ceramic.

On the other hand, most rock from the 60's and 70's that used celestion speakers were made with ceramic.

So I suggest you go to the celestion site and select different models and listen to the sound wave samples they provide before you decide which is best for the music you make! Not sure if Jensen has the same thing, but celestion did this about 5 years ago and I would be surprised if Jensen hasn't done the same by now.

If not, you can always search youtube for demos.....

Good luck on your mission, this post will self destruct in 5,4,3...

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Re: Celestion Alnico Blue - how does it handle pedals?

Postby tubesurfer6 on Tue Oct 06, 2015 1:57 pm

I don't really want to buy another speaker, I was just wondering how the Celestion Alnico Blue handles fuzz pedals. I use the Silvertone amp mainly next to a vintage Hiwatt halfstack and have it barely turned up, yet it adds another dimension to the sound.

I've read that in general Celestion speakers are rugged and conservatively rated.
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Re: Celestion Alnico Blue - how does it handle pedals?

Postby pdf64 on Tue Oct 06, 2015 8:32 pm

I'm reliably informed that modern Blues have been properly tested under controlled conditions up to a continuous 20 watts.
Bear in mind that the Fender DRRI Electric Blue edition was fitted with one; note the standard 5 year warranty http://www.elderly.com/fmic/items/F65DREB.htm

From 1432's schematic B+ of 280V and assuming the standard 8k p-p OT, it won't even make 10 watts clean; as the screen grid supply is saggy, it's cathode biassed, and there's a lossy 6X5 rectifier, I doubt that the overdriven power output will be much more than that. http://silvertoneworld.net/schematics/1 ... eworld.jpg

A DRRI is probably twice as powerful as the 1432, yet Fender put a 5 year warranty on them when fitted with a Blue.

So, I'm confident that your Blue can take anything that the 1432 can throw at it.

Has your 1432 got the original OT? The schematic indicates that the secondary is intended for a 3.2 ohm load. With an 8 ohm speaker, the power output will be less than 7 watts.
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Re: Celestion Alnico Blue - how does it handle pedals?

Postby tubesurfer6 on Fri Oct 09, 2015 8:24 am

That's the answer is was hoping for. :)

The OT is original - it has 4 and 8 ohm taps.
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Re: Celestion Alnico Blue - how does it handle pedals?

Postby pdf64 on Fri Oct 09, 2015 12:10 pm

Pleased that helped!
Just curious, how do you know about the OT taps? eg Are the taps labelled 4 and 8, have they been checked?
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Re: Celestion Alnico Blue - how does it handle pedals?

Postby tubesurfer6 on Fri Oct 09, 2015 1:03 pm

It was suggested on another forum, can't recall where exactly. My tech then checked it and confirmed that the amp has 4 and 8 ohm taps.

What do you think about the old P12R (original cone and in really good condition) being used with pedals? Probably not a good idea ...
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Re: Celestion Alnico Blue - how does it handle pedals?

Postby pdf64 on Fri Oct 09, 2015 2:57 pm

It would have more chance with your amp than, say, a 5E3, due to the much lower VB+.
But such old speakers may tend to disintegrate, as much as get burned out.
On my old P12R, the spider became detached from the cone / coil former.
I've used rubberised CA to repair that, though some other joint will surely fail with heavy use.
But is there's any point in a speaker you're afraid to use?
Why not use it until if fails, then get Weber to recone / recharge / run it in?
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