20-20khz 2 Way Speaker Plans, Deep Bass, No Doppler, Amazing Transparency

[steve]

I was wondering how many are interested in design plans for 2 way large box,
for personal use, high fidelity speaker that sounds wonderful, extremely transparent
with superior inner detail?

large box, 4.5 ft3, 11" wide,
2 way type,
Requires slightly physical tweaking the wide frequency range drive. (easy to do),
Sealed cabinet and extremely transparent with great inner detail, 
Plans include building box with internal bracing and excellent damping, depending
on amplifier and speaker wires,
Reproduces from 28hz (-3db) to 20khz (Never really heard a subwoofer sound as good
or I would have gone that route.)
but can reproduce 16hz pipe organ very cleanly, depending on amplifier and speaker
wires,
25 watts, 50 watts peak,
Approximately 89db/watt,
Includes crossover design and parts list.
Sound stage is wide and deep, dynamics and tonal balance excellent.

I can supply the parts, such as capacitors, resistors, and especially inductors,
which need to be pre-set by me for minimum adjustment of lead wire(s).
each part for nominal fee, 

I see so many small speakers, and very expensive large type speakers out
there, but few large box speakers at reasonable price. 

cheers

steve

[Nick B]

I love my speakers, but I am curious about your plans. Is this something you have built or is it just theoretical? If you have a finished product and know how to post photos, then go ahead and do so.

Nick

[steve]

I love my speakers, but I am curious about your plans. Is this something you have built or is it just theoretical? If you have a finished product and know how to post photos, then go ahead and do so.

Nick

I have been working on my test speakers for some 13 years, so tested. The only thing
not finished is finding anyone who will make a full sleeve.
Crossover is ~170hz to eliminate doppler effect.. Speakers are placed near side wall to avoid delays
and ~2 pie for woofers. Extremely transparent.

I play all kinds of music, from Anna Lapwood, Midnight Sessions to Opera.

Cheers

steve

Attached photo.

[Nick B]

I love my speakers, but I am curious about your plans. Is this something you have built or is it just theoretical? If you have a finished product and know how to post photos, then go ahead and do so.

Nick

I have been working on my test speakers for some 13 years, so tested. The only thing
not finished is finding anyone who will make a full sleeve.
Crossover is ~170hz to eliminate doppler effect.. Speakers are placed near wall to avoid delays
and ~2 pie for woofers. Extremely transparent.

I play all kinds of music, from Anna Lapwood, Midnight Sessions to Opera.

Cheers

steve

Attached photo.

Thanks for posting, Steve. I'm curious to know what speakers you are using unless you feel it's proprietary.
Nick

[steve]

I love my speakers, but I am curious about your plans. Is this something you have built or is it just theoretical? If you have a finished product and know how to post photos, then go ahead and do so.

Nick

I have been working on my test speakers for some 13 years, so tested. The only thing
not finished is finding anyone who will make a full sleeve.
Crossover is ~170hz to eliminate doppler effect.. Speakers are placed near wall to avoid delays
and ~2 pie for woofers. Extremely transparent.

I play all kinds of music, from Anna Lapwood, Midnight Sessions to Opera.

Cheers

steve

Attached photo.

Thanks for posting, Steve. I'm curious to know what speakers you are using unless you feel it's proprietary.
Nick

Hi Nick,

If you mean drivers, a 4" modified Tang Band with Ceramic magnet. It is very
important Not to use the neo magnet version. The plans include an easy modification
of the Tang Band.

The woofer is a Goldwood 12 inch driver. This is the only driver I could find, anywhere,
that had specs close to what I was looking for. All the other woofers
were designed for small boxes, not for the legendary big box designs.
The coherency of a great two way is truly revealing.

It was the drivers and electronics that allowed us, over the decades, to perceive
musical/sonic differences to 1 part in 4,000,000 (4 million) reliably.

They are so sensitive that moving a lead wire of each inductor per speaker adjusts the woofer
and tweeter frequency response.  I should purchase the inductors to set a basic reference point.
   
One can save a lot of money by building their own speakers. The project requires time,
wood cutting skills bracing, sound absorbing materials, and crossover parts.

Cheers

steve

[Nick B]

I love my speakers, but I am curious about your plans. Is this something you have built or is it just theoretical? If you have a finished product and know how to post photos, then go ahead and do so.

Nick

I have been working on my test speakers for some 13 years, so tested. The only thing
not finished is finding anyone who will make a full sleeve.
Crossover is ~170hz to eliminate doppler effect.. Speakers are placed near wall to avoid delays
and ~2 pie for woofers. Extremely transparent.

I play all kinds of music, from Anna Lapwood, Midnight Sessions to Opera.

Cheers

steve

Attached photo.

Thanks for posting, Steve. I'm curious to know what speakers you are using unless you feel it's proprietary.
Nick

Hi Nick,

If you mean drivers, a 4" modified Tang Band with Ceramic magnet. It is very
important Not to use the neo magnet version. The plans include an easy modification
of the Tang Band.

The woofer is a Goldwood 12 inch driver. This is the only driver I could find, anywhere,
that had specs close to what I was looking for. All the other woofers
were designed for small boxes, not for the legendary big box designs.
The coherency of a great two way is truly revealing.

It was the drivers and electronics that allowed us, over the decades, to perceive
musical/sonic differences to 1 part in 4,000,000 (4 million) reliably.

They are so sensitive that moving a lead wire of each inductor per speaker adjusts the woofer
and tweeter frequency response.  I should purchase the inductors to set a basic reference point.
   
One can save a lot of money by building their own speakers. The project requires time,
wood cutting skills bracing, sound absorbing materials, and crossover parts.

Cheers

steve

Hi Steve and thanks for the info. It looks like an interesting build, but I'm not aware of any DIY guys here who have the skills for cabinet making as well. Are you a member of any DIY audio forums?

[steve]

I love my speakers, but I am curious about your plans. Is this something you have built or is it just theoretical? If you have a finished product and know how to post photos, then go ahead and do so.

Nick

I have been working on my test speakers for some 13 years, so tested. The only thing
not finished is finding anyone who will make a full sleeve.
Crossover is ~170hz to eliminate doppler effect.. Speakers are placed near wall to avoid delays
and ~2 pie for woofers. Extremely transparent.

I play all kinds of music, from Anna Lapwood, Midnight Sessions to Opera.

Cheers

steve

Attached photo.

Thanks for posting, Steve. I'm curious to know what speakers you are using unless you feel it's proprietary.
Nick

Hi Nick,

If you mean drivers, a 4" modified Tang Band with Ceramic magnet. It is very
important Not to use the neo magnet version. The plans include an easy modification
of the Tang Band. Superior coherency, non beaming.

The woofer is a Goldwood 12 inch driver. This is the only driver I could find, anywhere,
that had specs close to what I was looking for. All the other woofers
were designed for small boxes, not for the legendary big box designs.
The coherency of a great two way is truly revealing.

It was the drivers and electronics that allowed us, over the decades, to perceive
musical/sonic differences to 1 part in 4,000,000 (4 million) reliably. Using typical
voltage db equation, is -132db from the reference frequency response deviation.
No other speaker will even come close to that level of inner detail.
 
One can save a lot of money by building their own speakers. The project requires time,
wood cutting skills bracing, sound absorbing materials, and crossover parts.

Cheers

steve

Hi Steve and thanks for the info. It looks like an interesting build, but I'm not aware of any DIY guys here who have the skills for cabinet making as well. Are you a member of any DIY audio forums?

The box is straight lines except for the circles for the drivers. Bracing is
simple 2x4" cut to matched length. Could take some expertise, especially
for lining screw holes to 2x4s.

I belong to two diy audio forums, but they are not accepting to much of anything I post.
Same concerning polypropylene capacitors in decoupling applications in "All About
Circuits Forum", I was met by a so called "certified" electrical engineer "Crutschow",
who posted a replies so ignorant, or otherwise, that meant Ohms Law, Kirchhoff Laws
do not exist. Now I have an Electronics Engineering Degree, worked in the college lab,
tutored students going for electrical engineering major
back in the day etc.

xAI, Grok, agrees with me as I asked AI concerning our debate, and Grok read the posts
in the string and posted his assessment, attached. Some posts may have been
deleted in "All About Circuits forum titled "RIAA Equalization pre-amp for phono
input" since last July, as I  have not checked. By the way, I was threatened with
punishment, so I don't go there anymore.

John Doe
http://www.audioreview.com/product/amplification/preamplifiers/sas-audio-labs/10a.html

and Crutschow's posts demonstrates what I had to deal with over the decades.

Cheers

steve

[BobM]

Just wondering ... isn't that every speaker builders goal ... superb response and transperancy?

[steve]

Just wondering ... isn't that every speaker builders goal ... superb response and transperancy?

Very true Bob. Their Goal. Good question. Notice the many designs, many
different companies and diyers? They all cannot be transparent, inner
detail, with superb response, naturalness/accuracy. Very few are even close.
I don't even consider open types, horns etc.

Some considerations that cause variability, lack of accuracy.

1. What size, shape box does one use? (Never really heard a subwoofer sound as good
or I would have gone that route.)
2. Each driver has internal parts, cone material etc.

3. Each crossover part distorts unless one finds and uses accurate sounding parts
4. Then there are 1st order, 2nd order, do I need a zobel and/or notch filter, and at
what frequency.

5. What kind of internal wiring, size/gauge
6. What type of solder to use,

7. Where on a pc board or hard wiring does one solder.
8. Then there is matching the amplifier output Z to speaker input Z which requires
high quality wire, proper total gauge, and number of parallel, separate strands
for flattest response.

As one can see, designing a speaker is more than a couple of equations. There are
literally tens of thousands of different manufacturers and values of
parts combinations.

Designing any speaker, and especially a high quality speaker is a challenging task to say
the lease.

I hope this answers yours and other's questions.

All the best.

steve