With the other L1's the bass units are quite often not right at the same location as the speaker. Which is the way with most PA systems.
I know this is a different system and wondered why the Bass is attached? Design reasons? Does it really work well for the sound or were concessions made for simplicity of set up?
You are going to enjoy reading this: From Prototype to Product
From what I read there looks was the big concern for the L1 model 1 and 2.
Still wonder about having the bass at the bottom and not seperate as it is with the model 1 & 2
From reading the other articles mentioned in the link (2nd Generation and First Research Prototype) - the first prototypes used 400W per channel amps (like the Bose 1800 - 450W/ Channel).
It would be interesting to know what the amplifier power is for all the final production units including the new Compact.
I don't think (or at least I haven't been able to find) it's listed on the Bose site anywhere.
I think some of the that concern was not as big for the Compact considering it's smaller power rating (then the L1 and L1 M2), plus the speaker array when fully extended is on top of the extensions, as opposed to being the complete length of the cylindrical array in the "bigger" models. Maybe someone with more expertise than me will chime in.
I know with most house systems you do not want the bass speaker where your main speake is , why is this different with the compact?
I'm not familiar with the preference to have a bass speaker separated from the main speaker. I get the impression that the separation of speaker systems is matter of the preference to elevate speakers for the upper frequencies and to leave the (typically much heavier) speakers for the bass frequencies on the floor. With bass frequencies being perceived as omnidirectional, I think that there is some greater flexibilty about where you place them. In conventional setups (not L1® setups), you are often running mono through multiple signals, so there is some benefits of scale to have all the bass speakers bundled together in a central location. But with L1®s we have the option to put an L1® near each sound source. So we don't put all the bass speakers together - especially with live music.
When I look at the Model I and Model II, I see that the Power Stands would be much heavier than I would like to carry if the loudspeakers were integrated.
In the case of the Model I where the B1 is optional, it has served me well to be able to use it for certain events, and NOT have to carry a B1. * certain events = spoken word events.
The Power Stand for the Model II is much lighter, but due to a different design of the Cylindrical Radiator® you must use at least one B1. But if the Power Stand had an integrated B1 then it would probably be too heavy for me to want to carry.
I think that it is a nice side benefit that you can move the B1 away from the Power Stand if you want. I rarely need to do it - except then I am in a corner.
With the Compact - well it is small and light enough and has a wide enough dispersion that I can put it just about anywhere I need to, to get decent bass response (e.g. out of a corner if necessary). In any situation that was well served by a Compact, I haven't really felt the need or desire to have the bass speaker separate from the Power Stand.
In the early discussions about the Classic (here in the forum) people would ask about elevating the Power Stand, or extending the Cylindrical Radiator®. We would hear about the very great concern for safety and stability, and the term "tipping hazard". You can seen how stable all three units are. I imagine that if the bass loudspeaker for the Compact were separate, there would have to be something of some significant mass to provide stability.
For me, with what I have done and experienced with the Compact and comparing that to my experiences with the other models, I don't feel compromised by having the bass speaker integrated into the Power Stand. It is for me, convenience without compromise.
Does that help?
Well, keep in mind that the speaker array is on top - the extensions do not have any speakers in them - so in the fully extended position, the bass and main speakers are separated.
Thanks St - Good to know you haven't found it a problem.
Tom- I kno they are higher but what I mean is they are in the same location on the floor. With the regular PA set-up that is considered to usually be a bad placement for the Bass units
I always have understood this to be the case and have read/heard it often. Here is one link. Bass speaker location
Thanks for the Astralsound article.
I think that the Compact, with its integrated bass unit at the bottom conforms to the ideas in the article - where they apply to typical applications for the Compact. It seems to fit with the concept of time alignment. The issues of level and room resonance are less of an issue because the Compacts are so portable that you can easily move them about to fine tune the sound in the context of the room. Note: When using any of the L1® as designed, you will likely NOT have the same bass sound sources amplified through multiple L1®s.
Here is something from Chris-at-Bose
B1 Bass Module Positioning.
I think that you will find that the two article have much in common.
With respect to the L1®s...
I think that having the bass sound coming from same location on the floor (or typically within a few feet) covers this issue. The exceptions are when we as live performers with portable systems find that the venue has placed us in a corner or tight against a wall.
In the Astralsound article the last two major points (Level and Room resonance) are both addressed in Chris' article. Note that as Chris writes about these issues, these are under the blanket umbrella "Arranging groups of B1s that play the same signal ". This typically happens when you have two to four B1s attached to a single L1® (not Compacts).
One big difference in terms of the context of these articles is that Bose recommends that each sound source be heard through only one L1® ; the closest one. This means that the bass frequencies for any single source will heard from only one location, and many of the issues discussed in the Astralsound article will not arise.
Over the years the engineers at Bose have mentioned many of the issues in the Astralsound article but these come up when people ask about running a single bass source through multiple L1®s. This typically comes up when people are running sound at much much higher volumes than we might anticipate doing with the Compacts.
Using two L1® Compacts as a Front of House System in a Church (30 feet wide by 50 feet deep)
Looking back over some of your posts, it appears that you may be thinking of using the Compacts in a (semi) permanent Front-of-House application. I understand why you would be interested in the issue of separating the bass unit. For a semi permanent installation that requires more low end support than the Compact was designed to provide, you can use external crossovers in front of the Compacts and redirect low frequencies to a separate system (sub woofers) and position that wherever it best suits the room.
Suitability for the task
I think the needs of the typical Compact user are well met by having the bass unit at the bottom integrated into the power stand, and providing stability for the speaker array at the top of the extensions. The Compacts are purpose built to suit people for whom portability and convenience are very high priorities. That is not to say that these priorities outweigh sound quality. The reason that I use my Compacts as frequently as I do is because they sound great in the situations where they are best suited.
+1 on that - the Compacts are easy to transport, carry and offer that great Bose sound that doesn't particularly break my bank account or my back. . .
Oh, and Cliff, for the record - I haven't had any issues with bass frequencies or sound not sounding good with my Compact (as little time as I've owned it and had the opportunity to use it). I will say that I got it mostly for my Solo/Duo acts and going back to the conventional PA's with the regular band is a definite "audio head turn" for me.
Yeah if we go with compacts we should probably get a 3rd party sub for the bass guitar. Just run that alone through the third party bass cabinet.
Simply made for a more COMPACT solution,the design, to allow you to use it in a collapsed manner without having to use any extra speakers.IMHO
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