Big E Loudspeakers

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    MAS 45.5 and MAS 25.5

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    mikearnopol
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    MAS 45.5 and MAS 25.5

    Post by mikearnopol on Fri May 30, 2014 10:19 am

    First major change to the 45. Italian speaker manufacturer 18Sound came up with a driver to compete with the Faital 5 incher I was using. Thing is that there is no competition. I was not recommending the 45 for electric bass because it had trouble with a B string and didn't go super loud. I still feel that it's the best upright cab I've ever played through. Fortunately, so do many others.

    The new driver moves about 20% more air and goes 13hz lower. The 45.5 is now a cab that can compete with "super" 12 cabs for electric. I would stil recommend using a HPF if you're hammering a B string. The biggest testament is when I had my buddy Eric Hochberg over. He uses a 45 for upright. I'm all excited about the new cab. We compare the two. He says "gee Mike---I think they sound pretty much the same" . Bingo. It sounds as good as the 45 but goes lower and louder.

    I'm now pretty stoked about my upright setup. I use a 45.5 and a 25.5. I used to use a 46 for my louder upright gigs. It sounds great but the 45 just has something special. A 46 went as loud as two 45's. Now with the 45.5 and a 25.5 I'm at the same volume level as the 46.The 46 still goes a lot lower and is likely a better choice for strictly electric. But if you put an Fdeck on the 45.5/25.5 youre going to be pretty close and have a very nice doubling setup. So for most of my upright gigs a 45.5 will do. For the many smaller upright cocktail gigs (which pay the most bread) a 25.5 will do. And for my louder more fusionish gigs a combination of the two is perfect.

    I'm working with Studio Slips to make a backpack for the 25.5 with a pocket in front large enough for a small amp. Hello New Yorkers!

    Life is good.
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    mikearnopol
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    Re: MAS 45.5 and MAS 25.5

    Post by mikearnopol on Sat Jun 07, 2014 2:00 am

    Just played a jazz trio with the 25.5. Tom and Steve have worked to get all of the cabs to have much better response in the vertical position. Well it works. The new 25.5 has a lot more impact and extension than the original. The original sounded great but I like this better. I might get Susan at Studio Slips to make a backpack cover with an amp pocket.

    coyoteboy
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    Re: MAS 45.5 and MAS 25.5

    Post by coyoteboy on Sun Jul 13, 2014 1:01 pm

    So Mike, the 45.5 sit between the 26 and 46 for output?

    Ive changed out the tubes i my WA to the JJ golds, and im now hitting the max of the 6.5's a little sooner than i'd like.

    coyoteboy
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    Re: MAS 45.5 and MAS 25.5

    Post by coyoteboy on Sun Jul 13, 2014 1:02 pm

    Yeah, i know. I just had to have 4 ohms. :-p

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    Re: MAS 45.5 and MAS 25.5

    Post by coyoteboy on Sat Sep 13, 2014 9:29 am

    Are the dim's and specs the same as the orig. 5's?
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    Doug Hart
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    Re: MAS 45.5 and MAS 25.5

    Post by Doug Hart on Sat Sep 27, 2014 11:37 pm

    I think Mike must have missed your post. I'll send him a message.
    Sorry 'bout that.
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    Steve Regier
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    Re: MAS 45.5 and MAS 25.5

    Post by Steve Regier on Sun Sep 28, 2014 12:00 am

    The dimensions are roughly the same. The impedance abs sensitivity are similar as well. The 5.5s have more extension and in my experience a more balanced mid-range.


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    coyoteboy
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    Re: MAS 45.5 and MAS 25.5

    Post by coyoteboy on Sun Sep 28, 2014 1:23 am

    Didn t mean to come off as impatient. I know folks are busy, im busy, and a forum allows people to reply in their own time.

    Curious how well the new 25.5 would play on top of a 26. Does the mvw config. affect he interaction of dissimilar drivers operating in the same frequency?


    coyoteboy
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    Re: MAS 45.5 and MAS 25.5

    Post by coyoteboy on Sun Sep 28, 2014 9:35 am

    Saw this question answered in another thread by Mr Regier. The answer i hoped for. ;-)

    Thanks.
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    mikearnopol
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    Re: MAS 45.5 and MAS 25.5

    Post by mikearnopol on Sun Sep 28, 2014 1:27 pm

    It would work fine. I would recommend wiring the 25 in series for a 16 ohm load. That way it would see lees power than the 26. Even at 16 ohms most amps would drive the 25 to its limits

    coyoteboy
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    Re: MAS 45.5 and MAS 25.5

    Post by coyoteboy on Sun Sep 28, 2014 2:40 pm

    Ah, i see. I was hoping the capabilities would be more similar with the driver update, and have two flavors available, and/or crossing them over to use the 26 as a sub when used together. If the 26 rates ~300w, whats the new 5.5s rating?
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    mikearnopol
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    Re: MAS 45.5 and MAS 25.5

    Post by mikearnopol on Sun Sep 28, 2014 3:20 pm

    To give you an idea of the differences in volume.

    The effective volume of air moved for the 26 is about 300 cc.That's about the same as a typical 210 and a bit more than a typical 1x12" cab. A "super" 12 cab like the Thunderchild or Fearless is around 490 cc's.

    The 25.5 is around 216 cc's. The original 25 was around 160 cc's. I really think that the 26 and 25 would work well together. Just have to be sure of the impedance match is cool.

    I don't think that using the 26 as a sub is worth it. You would then be limiting you top volume by the volume of the 26. So--around 300 cc's. Since the 26 is a full range speaker---you gain virtually nothing using it as a sub. Might as well not even hook the 45 up.

    If you could get the impedances right and combine the two you'd be at 516 cc's.

    I'd say that the power handling of the 25.5 is about 200 watts.

    coyoteboy
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    Re: MAS 45.5 and MAS 25.5

    Post by coyoteboy on Sun Sep 28, 2014 6:45 pm

    Cool Mike, thanks. Thats about what i thought regarding the new 25.5. If i were to use them together, its about 200-250w per, with the 25.5 being the limiting factor in this case. I dont see a problem running them @ 4 ohms ea. i use an hpf, and using both would be more about sharing the load, not cranking the max volume.

    My current gig is sometimes "acoustic" trio w/o percussion, and sometimes with cello. Based on descriptions, the 5.5s are the ticket.

    Ill consider this combo further. Thanks for the insight. What amps do you use with your 25.5/5.5 setup?

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    Re: MAS 45.5 and MAS 25.5

    Post by coyoteboy on Sun Sep 28, 2014 6:55 pm

    25.5/45.5, i mean.

    flatback

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    Re: MAS 45.5 and MAS 25.5

    Post by flatback on Sun Feb 01, 2015 4:04 pm

    Getting ready to spring for a 2.5.5 but I want to know if any of these OTHER exotic plywoods can be used (so that I can have a beautiful wood finish)like the zebra wood ply or marine maple or cherry and if anyone has ordered a backpack from studioslips yet for it....I love my clamshell bag for the 46...my hesitation in springing for the 25.5 is
    1. that I suspect that once I get it Im going to use my 46 very rarely afterward and I want get some more use out of it before it becomes a studio stand for the 2.5.5
    2. this line up of speakers changes so fast all the time with the next one being so much better then the last that I thought I'd let it settle for a time to see if this round of speakers (18sound) is going to be replaced by something else.
    on another note: whats up with the Sonic Farm/ MAS Amp/preamp that sounded so promising 6 months ago?

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    Re: MAS 45.5 and MAS 25.5

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