Reply to thread

Message

<blockquote data-quote="Tim McCulloch" data-source="post: 58557" data-attributes="member: 67">Re: Voicing/tuning a 3-way home brew speaker cabThank you for that distillation, Bennett.&nbsp; My reply was much longer and probably was less useful.John, what I described was &quot;raw driver response - as loaded&quot;.&nbsp; I think it&#039;s important for a couple of reasons, but the first reason is what you&#039;ll learn from it.&nbsp; Watching and listening to some truly gifted designers over the years, the most important thing I learned is that optimal performance starts with transducer selection based on how they interact with each other, more than how they work (or sound) individually.&nbsp; You&#039;ll never know those things unless you look at each pass band transducer by itself and continue your measurements as you combine them.And I&#039;ll say again that the odd loading (reflex and sealed) is a way of creating an acoustic crossover between the mid-LF and LF, but you need to verify how it works with the speakers you&#039;ve chosen to load into the boxes.&nbsp; You might be able to run them in parallel or they may well need a separate amp channel and DSP (and my money is on the latter), but it depends on what you find as you work with them.Or fire up some arbitrary crossover points, set levels by ear to get a general &quot;voice&quot; to the PA, and go make some noise.&nbsp; Do the &quot;lather, rinse, repeat&quot; that Tim Weaver suggests.&nbsp; It&#039;s a valid concept, too...&nbsp; but since you have some measurement tools I suggest you take the investigatory approach (particularly combined with the &quot;use it at the gig&quot; that Weaver mentions) until you strike gold or get tired of it.&nbsp; This kind of project can take you into all sorts of &quot;what if&quot; situations where you can play with DSP and measure/listen to the outcome.&nbsp; Consider it part of your education.</blockquote>

[QUOTE="Tim McCulloch, post: 58557, member: 67"] Re: Voicing/tuning a 3-way home brew speaker cab Thank you for that distillation, Bennett. My reply was much longer and probably was less useful. John, what I described was "raw driver response - as loaded". I think it's important for a couple of reasons, but the first reason is what you'll learn from it. Watching and listening to some truly gifted designers over the years, the most important thing I learned is that optimal performance starts with transducer selection based on how they interact with each other, more than how they work (or sound) individually. You'll never know those things unless you look at each pass band transducer by itself and continue your measurements as you combine them. And I'll say again that the odd loading (reflex and sealed) is a way of creating an acoustic crossover between the mid-LF and LF, but you need to verify how it works with the speakers you've chosen to load into the boxes. You might be able to run them in parallel or they may well need a separate amp channel and DSP (and my money is on the latter), but it depends on what you find as you work with them. Or fire up some arbitrary crossover points, set levels by ear to get a general "voice" to the PA, and go make some noise. Do the "lather, rinse, repeat" that Tim Weaver suggests. It's a valid concept, too... but since you have some measurement tools I suggest you take the investigatory approach (particularly combined with the "use it at the gig" that Weaver mentions) until you strike gold or get tired of it. This kind of project can take you into all sorts of "what if" situations where you can play with DSP and measure/listen to the outcome. Consider it part of your education. [/QUOTE]

Verification