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Multi-Way Conventional loudspeakers with crossovers

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View Poll Results: choose your way!
3 way classic - limited (Under ~500$ Drivers and Parts). 39 20.97%
3 way classic - High end (Above ~500$ Drivers and Parts). 43 23.12%
3 way horn loaded - limited (Under ~500$). 8 4.30%
3 way horn loaded - High end (Above ~500$). 24 12.90%
2 way classic - limited (Under ~500$). 20 10.75%
2 way classic - High end (Above ~500$). 14 7.53%
2 way horn loaded - limited (Under ~500$). 25 13.44%
2 way horn loaded - High end (Above ~500$). 13 6.99%
Voters: 186. You may not vote on this poll

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Old 3rd August 2018, 06:19 AM   #21
Tyimo is offline Tyimo  Hungary
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Hi!

Since many people play here with low power amplifiers, it would also be useful for a high-sensitivity horn speaker design too! Of course, with not too expensive and exotic parts....

Greets:
Tyimo
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Old 3rd August 2018, 06:52 AM   #22
Forane12 is offline Forane12  Bulgaria
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Quote:
Originally Posted by martyh View Post
Plenty of great minds posting here. If the project even got to the point of agreement on design goals it would be worth the read. Something similar to the original iconic would be the place to start for me... 2 way, ignore the extremes of FR and shoot for high efficiency.
One of the greatest minds on the planet is already one of the most open and sharing people here:

Sonics by Joachim Gerhard cabinets and kits.

I have been building speakers for 25 years, tried the best drivers, most of the types of speakers out there, I built horns, open baffles, 2way, 3way and the most difficult part was to get my wife to accept the ugly MDF boxes IN the house

Speaker design is a real art but it is tough to please everybody because even the best speaker sounds different in different rooms.

Measuring equipment is expensive, knowledge how to use it even more so. One of the most extraordinary experiences with speakers was the Linkwitz Pluto and later the LXmini. Impossibly ugly but if you set it up right and close your eyes - man, all theory and all I thought I knew simply vanished.

It is not as easy as it looks. Good drivers are pretty expensive and high sensitivity which we all love is even more difficult to pull of. When I move to a house which will allow me to build something like the JBL4367 I will end the quest And it took 70 years and some millions in R&D to develop a speaker that sounds decent...
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Old 3rd August 2018, 07:40 AM   #23
Lojzek is offline Lojzek  Croatia
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Perhaps it would have made sense to set up a poll in such a way that we won't need to discuss it much further than that. A woofer brand like Peerless SLS or cheaper like GRS, depending what people may have more faith in. 2 woofers in a force canceling mode, maybe a waveguided tweeter. This forum should make profit of it and offer such a kit that majority would gladly have it , meaning very good performance and economic enough, tube amp friendly.
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Old 3rd August 2018, 01:26 PM   #24
Aatto is offline Aatto  United States
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Agreed on something like Peerless XLS or SLS series because of their good reputation, something like Peerless 12 xls has 90DB SPL and FS of 21.5Hz, can go really low without a huge cab and breaking the bank!
I agree on a poll, that s a good idea, not sure how many polls we can add to a single thread tho, maybe a mod can answer that if we can have more than one poll.

send your candidate drivers to start a poll.

I raise these :
SB Acoustics SB34NRX75-6
Morel MW 1254
Peerless 830500 12" XLS
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Old 3rd August 2018, 01:30 PM   #25
Aatto is offline Aatto  United States
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When I move to a house which will allow me to build something like the JBL4367 I will end the quest ..[/QUOTE]

yeah i m with ya, if I win lottery i will be able to afford a house, then i will build a jbl 4350 and then i ll quite too
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Old 3rd August 2018, 02:52 PM   #26
andy19191 is online now andy19191  Europe
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The Peerless driver is discontinued. The SB is more for large sealed enclosures but there is a more expensive version for smaller vented cabinets.
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Old 3rd August 2018, 03:52 PM   #27
Paul Vancluysen is offline Paul Vancluysen  Belgium
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Nice idea to create such speaker. I am prepared to give maximal support to the project.

From my side I can offer a complete design on paper. Once the drivers are chosen, the system defined and the cabinet dimensions known, I am able to simulate the speaker completely in Leap. Deliverables can be a passive filter schematic or a digital filter with biquads to implement in a digital processing platform like there are miniDSP, Hypex and others. All plots of SPL, power, impedance, polar responses, it is all possible to simulate. To start with I can use the driver supplier specifications. Later on measurements of people that want to built it, can be used of course also. I will follow the topic and see what I can add to it.

It is possible to design different filter concepts that can chosen like there are LR2, LR4, B1, B2, B3, elliptical filters,...

Some idea for the concept. Maybe making it not too complex, a classical three way. Woofer 10 to 12 inch in closed box; midrange: 5 to 7 inch; tweeter 1 inch dome. Just an idea.

Paul

Last edited by Paul Vancluysen; 3rd August 2018 at 04:10 PM.
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Old 3rd August 2018, 05:02 PM   #28
Aatto is offline Aatto  United States
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Nice to have you on board Paul.
I also like the idea of a simple classic 3 way, you can't go wrong with that.

if everybody agree i m gonna add a poll to decide what kind of speaker we are going to start with:
2 way, 3 way or FAST.
maybe also a poll to go with classic design or horn loaded ?
after that would be to choose the drivers for each section.

everybody ok with this ?
maybe we can have a moderator on board as well to see if we can change the thread name or something to attract more people to participate ?
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Old 3rd August 2018, 05:21 PM   #29
tsmith1315 is offline tsmith1315  United States
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Part of the confusion in the previous attempt was the name "Reference." That conjures up the idea that it's the finest we have to offer, the coup de gras, and by which all others would be judged. Indeed, a clear criteria from the onset is key to success.

I envision this as the loudspeaker equivalent of an old AR XA turntable or a Lotus Seven- It should be a solid, basic, easy to build design that will work very well with a modest investment of time and money. A platform that is easy to tweak, personalize, upgrade or hotrod at the time of building, or later down the road after they've become less exciting.

For a wider audience, and to encourage more of those who lurk without building, the woodwork should be as simple as possible and require few tools. Perhaps a design that could be built sealed or vented using the same set of drivers and basic filter topology.

As this is DIY, those with means can make it as complicated as they want, but please don't leave out the average Joe who is really curious, can't spend big money, and just needs the right kind of nudge to spur him on.

It would be cool to end up with a modest series of loudspeakers with different attributes under the diyAudio guise. Look to PassDIY and how Papa's freeware designs have evolved over the years for inspiration. They have been successful for a reason.
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Old 3rd August 2018, 05:27 PM   #30
Paul Vancluysen is offline Paul Vancluysen  Belgium
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ok for me...

I will not vote for horn loaded, I like it, but I cannot simulate it with Leap ).
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