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#268945 - 08/09/09 08:12 AM
Re: 2 Compacts or a L1 Model II ?
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Senior Member
Registered: 12/08/02
Posts: 15569
Loc: Forest Hill, MD USA
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Sunny, First and foremost, congratulations on purchasing the Bose L1--it's a fantastic machine. Next, are you using the ToneMatch mixer with the L1 Mod.II? If so, be sure to connect both the left and right output channels of the Tyros3 to the mixer, then set the EQs of both channels. If you are not using the ToneMatch mixer, purchase an adapter plug that will combine both the left and right output channels of the T3 before plugging into the Bose input. This really adds a lot to the overall fullness and quality of the sounds. When not using the ToneMatch, you'll need to EQ your keyboard's master EQ via the mixing console. The settings, obviously, will vary, depending upon the configuration of the venues. You can save those settings to the User area(s) and recall them as EQ presets at any time. Once recalled, the global EQs will remain until you decide to change them. Hope this helps, Gary ![](http://www.synthzone.com/ubbs/cool.gif) [This message has been edited by travlin'easy (edited 08-09-2009).]
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#268949 - 08/10/09 12:32 AM
Re: 2 Compacts or a L1 Model II ?
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Registered: 04/25/05
Posts: 14212
Loc: NW Florida
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Originally posted by hellboy44: Sunny, the Yamaha Keyboards are famous (infamous?) for not summing to Mono "clearly" in regards to the Bose System. I am still waiting to see if someone will EVER truly prove or disprove this once and for all. There are several ways for an externally summed signal to change compared to the internally summed (gain structure, EQ's even if not engaged, output eq's, etc.). But I'd sure love to see a recording of the stereo out, summed to mono in a DAW compared to the same file summed to mono internally and recorded mono. (Only way to prove it, IMO) Me, I just think the Yamaha pianos (especially) sum to mono very poorly, and it doesn't really matter much WHAT you play them on. Unless they are in stereo, they are going to sound pinched and phasey. You can possibly EQ a little externally to compensate a bit, but it is still there. I haven't yet heard how loud the Compacts can go, and still stay clean (and not engage the built in limiter), but I HAVE pushed an L1 close to it's limits (pretty loud!). But all in all, unless you are doing live club work where you normally need a decent sized PA to get the floor pumping, I'd go for the two Compacts and preserve the stereo. Dealing with how much the sound changes in mono seems to be the determining factor. If Yamaha's sounds collapsed to mono more gracefully, it would be a tougher call, but those things are DESIGNED to work in stereo. Why hobble them?
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#268951 - 08/10/09 05:02 AM
Re: 2 Compacts or a L1 Model II ?
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Member
Registered: 05/16/08
Posts: 307
Loc: Chesapeake, Virginia, USA
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I've never performed measurements, but my ears have always detected phase problems when the rather ubiquitous Yamaha Piano Samples are involved (which all sound rather alike, they must have sampled the same model C or something).
At any rate, the stereo pianos seem to blend better -- and sound more like a realistic grand piano -- when the two channels are amplified separately as vs summing to mono.
The blending of the two signal aources in the compressible medium of air takes advantage of the physical property of elasticity here and I think that is a factor. I also think one could write a thesis on the subject which could get rather deep rather fast if all the possible ramifications are investigated.
At that point, it is cheaper to simply move to true stereo amplification.
BTW -- when onstage I prefer to have a separate stereo keyboard amp and speaker system, fullrange, but leave the PA front as it was. The piano when amplified through the typical PA front, separated extreme stage L and R as most are, doesn't sound right to my ears either, unless you want your audience to perceive themselves sitting inside the world's largest grand piano, a listening situation of the absurd. Of course, the Bose Compact situation we are talking about can neatly sidestep that problem entirely as inherent in its design nature -- if you use two in stereo. I think the Compact, with its multiple drivers, does indeed impart a slight bit of its own phase situation, but that is part and parcel of what the design yields and certainly not detrimental for the live performance in the right sized venue. Of course I'd never use that system for audio reference or monitoring for recording, though, that'd be the kiss of audio death and a task for which the system was never designed nor intended to do.
--Mac
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