|20th March 2013, 08:42 PM||#1|
Join Date: Mar 2013
Not to design my own for the first build
I haven't built anything yet, but have been reading this forum and others. A common response I keep seeing is that a first speaker build should be a kit or someone else's design, and not something you come up with on your own. I don't understand the reason for this.
I agree designing something on your own is harder, so if someone says "I want a speaker and haven't built one before", and you say "use a kit, it's easier", that makes sense. If you say "Do a few from kits first, and then move on to designing your own", that does not make sense.
I have some theoretical knowledge on crossovers and driver selection (what is freely available via Internet), and no practical knowledge. I don't see how building a speaker from a kit is going to give me more of either.
I also don't understand why designing crossovers without expensive measurement equipment is harder. I agree if I were designing a line of speakers for mass production, and wanted a very flat response in an anechoic chamber, it would be harder. But I don't care what my speakers sound like in an anechoic chamber, I care what they sound like in my living room, and feel I can measure that better with free software and a $5 microphone in my living than a professional with $100,000 equipment and no idea where the speakers will be placed. Of course, I may need a new crossover if I change rooms, but I will probably change speakers more often than I change rooms.
|20th March 2013, 10:12 PM||#2|
Join Date: Aug 2003
I say go for it. Even if you bugger up the crossover, you can always come back to it at a later date.
It's worth investing in some speaker design books. This is ok for the beginner: Designing, Building, and Testing Your Own Speaker System with Projects
. I'd also read this.
|20th March 2013, 11:59 PM||#3|
Join Date: Oct 2008
It is probably better to design your speakers to suit your room, and design the crossover to suit the speakers without the room, then treat the room and locations to suit the balance. This way you aren't using the crossover for something that it is technically unable to fix. Although a crossover will EQ a speaker, not all things can or should be EQ'ed.
|21st March 2013, 02:22 AM||#5|
Soakin' up the Sound!
You really have nothing to lose by giving it a try. See what you can come up with and tweak it as you learn more. Experiment. Have fun. If you decide you want help on it, I'm pretty sure you'll be able to get plenty.
I don't know if you've seen this, but there's a lot of good info in its pages.
The Speaker Building Bible
Most importantly, have fun!
Marantz PM8003 amp, Jolida SJ502A, Squeezebox Touch, MLTL Continuums; MarkAudio A 7.3 Frugalhorns, MarkAudio CHP-70s
|21st March 2013, 02:40 AM||#6|
Join Date: May 2010
If you're willing to learn how to take and use measurements, response and impedance, and you're not afraid of wasting some money on failed/revised plans, just go for it and start learning. I would recommend more like $150 for a calibrated mic and a used USB interface, though. You can do a whole lot with that.
Last edited by dumptruck; 21st March 2013 at 02:44 AM.
|21st March 2013, 02:58 AM||#7|
Join Date: Nov 2003
Location: Brighton UK
Because your clueless, and no matter how clever
you think are in choosing drivers and crossover
designs, people have been their and done it.
By all means design you own speaker, but if you think
that is going to be easy that is your first mistake.
If you think you can do better first off with a design
than people with years of experience that is your
If you think you can't learn from studying designs
from other people that is your third mistake.
If you think you can come up with something that
hasn't been done before that is your fourth mistake.
If you wan't something that hasn't been done before
that is your fifth mistake, you will be on your own.
Its possible if you thoroughly understand most of
the existing designs out there and what you want,
you could do better, but its a lot more likely you
simply can't for a first build, choosing your own
drivers and crossover, as most good driver choices
as combinations are used in the better designs.
e.g. For the price come up with something better than say :
For the balance of its performance attributes you can't (IMO).
I could list several other designs with different performance
envelopes that are all extremely good and very hard to better.
There are good designs out there, and trying to reinvent
the wheel is not a good plan. Use all information available.
The astute would find a suitable good design and concentrate
on the cabinets. Good cabinet design is also far more complex
than it first appears, and a nice finish everyone wants.
(see if nothing else, the excellent FAQs)
The Speaker Building Bible
Zaph|Audio - ZA5 Speaker Designs with ZA14W08 woofer and Vifa DQ25SC16-04 tweeter
FRD Consortium tools guide
RJB Audio Projects
Speaker Design Works
A Speaker project
Humble Homemade Hifi
Quarter Wavelength Loudspeaker Design
Pi Speakers - unmatched quality and state-of-the-art performance
The Frugal-Horns Site -- High Performance, Low Cost DIY Horn Designs
6.283 Audio Pages
Linkwitz Lab - Loudspeaker Design
Music and Design
Great free SPICE Emulator : SPICE-Based Analog Simulation Program - TINA-TI - TI Software Folder
There is nothing more practical than a really good theory - Ludwig Boltzmann
When your only tool is a hammer, every problem looks like a nail - Abraham Maslow
Last edited by sreten; 21st March 2013 at 03:02 AM.
|21st March 2013, 03:19 AM||#8|
Join Date: Feb 2003
Thus it is important (for me at least) to have a benchmark so we can compare a speaker being designed next to a finished design, to properly measure the success.
Dayton and Silverflute are cheap drivers with very good quality. Having a speaker design with any of them next to a new design with more expensive drivers can be frustrating if you know what I mean.
If you're interested in speaker building, you can build a trusted design, then spend your whole life bettering that design
Or, you can build poor speaker after poor speaker, without knowing what can be achieved with the drivers.
For those who only need the speaker (do not have interest in the design) and only want to listen to music, building trusted design is the only way to go.
|21st March 2013, 04:48 PM||#10|
Join Date: Nov 2010
We don't know bvbellomo, nor how he reacts to adversity. Perhaps after a single attempt he'll say cram it and buy something, or alternately, build an established design. Or, on the other hand, if disappointed with his first result, he may be very determined, and research, purchase equipment, measure and go on to become another Troels, Tony Gee, or similar respected designer. He's working with speakers, not high voltage tube amps where lack of skill and knowledge could kill him. I think the only critical mistake he can make is not trying.
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