Astoria Custom Speaker Choice

Marshall's new Handwired 30 watt amps. Classic, Custom, and Dual

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mellotron72
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Astoria Custom Speaker Choice

Postby mellotron72 » 07 Feb 2018, 13:01

Been trying my Custom head out with the 2x12 G12C speakers in my VM combo and really loving the sound. I prefer it to the Creamback stock speaker. If I were to replace the Creamback with a Greenback in the 1x12 Astoria Cab would an 8ohm G12M (25W) be OK for power handling or would a G12H (30W) be a better option. Any thoughts? Anyone try it?

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Re: Astoria Custom Speaker Choice

Postby surfnorthwest » 07 Feb 2018, 13:56

Although Astoria is rated at 30 watts the 25 watt Greenback would be fine. I think the 30 watt rating is a bit less anyway.

Celestion under rates their speakers, either a single G12M or a G12H would be fine.
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Re: Astoria Custom Speaker Choice

Postby TM1 » 07 Feb 2018, 21:58

I've put 30 watts into a Blue alnico without any issues.. But you may want to try a 30w G12H. I use a single 12" cab with a Cream alnico and also I use a 2x12 2061Cx that has a 30 watt G12H and a 15 watt Alnico Blue (45 watts).

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Re: Astoria Custom Speaker Choice

Postby SteveD » 08 Feb 2018, 01:55

It's always difficult to give a definitive answer to questions like this because we're talking music program power handling here. The music program is dependant on your sound and style of playing. For example, funky chord rhythm playing with its percussive nature will average out to a low power dissipation, whereas a synth driving a constant 80Hz square wave into the amp would produce much more average power. However, as the amp is cathode biased, the bypass cap over the cathode resistor would start averaging the constant signal anyway and reduce power output in the power amp by about 10%.

Personally, I would always recommend allowing some margin on speakers for power handling.

I'd be interested to know your opinion on comparing a single Greenback with the Creamback so it's more of an even playing field.
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Re: Astoria Custom Speaker Choice

Postby mellotron72 » 08 Feb 2018, 10:06

Thanks for the advice all. Time to do some careful experiments! I will report back.

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Re: Astoria Custom Speaker Choice

Postby mellotron72 » 10 Feb 2018, 04:34

Well that was interesting! This is what I did to test the speakers: Amp settings 5W mode (master out), Master 5, Edge 8, Bass 7, Mids 10, Treble 7, Gain 6, Loop off
I tried a Greenback G12C 1x12 16 ohms, the Creamback G12H 1x12 8 ohms, Greenback G12C 2x12 8 ohms and Greenback G12C 4x12 16 ohms. I used a Zoom H1 mic 3m back from the Cabs.
Firstly the Astoria Custom sounded excellent through all 4, just different. Secondly the volume level was really interesting. The loudest volume perceived by the Mic was the Creamback - very slightly louder than even the 4x12 which surprised me. I guess this is down to speaker sensitivity and efficiency together with the fact that the power is shared between a different number of speakers. The 4x12 sounds fuller with much more bass and lower mids. Being closed back too, the 4x12 obviously sounds fuller in the low end than the open back cab.
Comparing the G12C and the G12H 1x12 helped me decide not to change the stock speaker in the Astoria Cab. The Creamback is louder, clearer and more articulate than the single Greenback.
The real difference between the sounds is in fullness. I liked the 2x12 but it was less clear and articulate than the Creamback.
After I had finished the experiment, I thought I would try a weird combination of the Creamback 1x12 and the 2x12 Greenbacks together so 2 8ohm cabs. This sounded excellent, preserving the open and articulate Creamback sound with an fuller Greenback sound complimenting the Creamback. Seems weird having 3 speakers not 1, 2 or 4 but it seems to work.
There are so many variables in an experiment like this that it gets complicated and ends up about opinion as much as anything. For example, I could have turned up the amp to get the same volume from the 1x12 Greenback making the map sound even better with the Master higher. The G12Cs have been more broken in at loud volumes gigging than the G12H. Basically I have learned that I can gig with any combination of these speakers and it will sound great, just different and I can match the cabs to the room. The volume thing was most interesting. People see a 4x12 and expect it to blast the sound out 4x louder than a smaller cab but this isn't really true.

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Re: Astoria Custom Speaker Choice

Postby Anitoli » 10 Feb 2018, 11:20

Nice gear. Yup to 4x12's, not necessarily louder but fuller is the name of the game.

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Re: Astoria Custom Speaker Choice

Postby TM1 » 19 Feb 2018, 21:20

With 4-12"s you're moving 48" of air vs 1-12" which moves, you guessed it, 12"s of air.. More air movement gives the impression that it's louder/higher wattage.

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Re: Astoria Custom Speaker Choice

Postby Sigi M » 20 Feb 2018, 00:36

Usually I play the Astorias - Dual and Custom - with G12 H30 Greenbacks. Fullstacks. Classic Rock at it´s best. For live use I can recommend The ModeFour Cabs. MF 280/16 Ohm. These have modified Celestions V30 Vintage speakers.

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