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?
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, 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
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
Quote from: Nick B on February 16, 2026, 08:06:30 PMI 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.
Quote from: steve on February 17, 2026, 02:20:28 PMQuote from: Nick B on February 16, 2026, 08:06:30 PMI 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
Quote from: Nick B on February 18, 2026, 01:18:37 AMQuote from: steve on February 17, 2026, 02:20:28 PMQuote from: Nick B on February 16, 2026, 08:06:30 PMI 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
Quote from: steve on February 18, 2026, 05:53:51 AMQuote from: Nick B on February 18, 2026, 01:18:37 AMQuote from: steve on February 17, 2026, 02:20:28 PMQuote from: Nick B on February 16, 2026, 08:06:30 PMI 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?
Quote from: Nick B on February 18, 2026, 09:56:09 AMQuote from: steve on February 18, 2026, 05:53:51 AMQuote from: Nick B on February 18, 2026, 01:18:37 AMQuote from: steve on February 17, 2026, 02:20:28 PMQuote from: Nick B on February 16, 2026, 08:06:30 PMI 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?
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
Just wondering ... isn't that every speaker builders goal ... superb response and transperancy?
Quote from: BobM on February 18, 2026, 04:49:48 PMJust wondering ... isn't that every speaker builders goal ... superb response and transperancy?
Very true Bob. Their Goal. Good question. Notice all the many designs, with so many
different companies and diyers? Same with electronic components, which
all sound different. They all cannot be transparent with superb response,
naturalness/accuracy. Very few are even close.
What size box does one use? Each driver has internal parts, cone material
etc. Each crossover part also distorts unless one finds an accurate brand.
Then there are values to deal with, 1st order, 2nd order, do I need a zobel,
or a notch filter at what frequency.
What kind of internal wire, size, and even what type of solder to use, where on
a pc board or hard wiring does one solder. As one can see, it is extremely
difficult to achieve 1 part in 4 million sensitivity to changing frequency response.
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 such a high quality speaker is a daunting task to say
the lease.
And I am willing to almost give the design away.
I hope this answers yours and other's questions.
All the best.
steve