System Pictures & Description

[8x24 inch]

The frequency sweep looks excellent. You must have designed it well. How did you make your design choices?

Traveled around and heard many different solutions and chose what I think sounded best on music.

However, such measurements cannot be reached without a well-treated room. That's the most important part.
Look at the waterfall from 50 - 150 Hz. It requires a good job with the room.
The room has many self-assembled solutions, and first reflections are under very good control

Another important thing is the choice of a good DSP solution.
I use Audiolense

 

[8x24 inch]

I saw your design rationale on your sub thread:

My philosophy is lot of membrane areas and low stroke. It produces little distortion.
I think it is important with low group delay.
The room is also very important, and it is important to work for short reverberation in the lowest bass


Can I ask about the "6 pcs. Acoustic Elegance TD15M in OB - midbass from 60 - 500 Hz" please?


Is OB short for open baffle?
Were the TD15M originally meant for a sealed box?
Did you put the TD15M in a sealed box?
If so why change and how does it sound?


Thanks for posting your photos and measurements of your super system!

Thanks, we think a lot in the same way
Yes, open baffle.

Would never reach such a waterfall with a closed midbass system

 

[8x24 inch]

At a slightly earlier stage, when there still was some trouble with the midbass, but pretty good control over distortion

 

[kazap]

..... Yes, open baffle.Would never reach such a waterfall with a closed midbass system

Your waterfall is a thing of beauty. Its so clean. So OB mid-bass reduces resonances? Seems obvious now I think about it. Thanks for the tips.


The waterfall is so good it makes 34Hz loom large. Is that from the eight PD.2450 resonating, or the six AE-TD15 or something in the room?

 

[8x24 inch]

Just nice to contribute.
Something in the room, and I'm still working for better results

 

[6thplanet]

Titan

Finished this project last week. The drivers are LCY108 tweeters, HM130Z4 Audax mid-ranges, and Aurium Cantus AC250F1 woofers. The woofer is in a sealed enclosure and the M/T above it is OB. The series crossover is at 300 and 4k. Wood used is Rosewood veneer and Wenge, finished with 4 coats of Waterlox. Sorry about the pics, wish this had a way of rotating them.

 

[academia50]

Sorry about the pics, wish this had a way of rotating them.

The Windows Image Viewer has that option.
You have to rotate them before uploading them to the forum.
Congratulations for the monster.... :

 

[6thplanet]

Oh wow, sorry, not the best at stuff like that. I feel I can build a heck of speaker, though! Thanks for flipping them around for me.

 

[8x24 inch]

Some pictures from the midrange Construction

140 kg

 

[8x24 inch]

Last tweeter solution

 

[8x24 inch]

GD measured in the listening position

 

[slogan2112]

SSA-WG speaker project

I completed my speakers that I have been working on for quite some time.

A few details;

Name:
The SSA-WG is a 3-way Scan-Speak Accuton WaveGuide project.

Drivers:
Woofers: 2x Scan-Speak 22w/8857T00 (parallel)
Midrange: Accuton C173-6-090
Tweeter: Scan-Speak D3004/6640 mounted to a Jantzen Waveguide

Crossover:
Duelund with approximate crossover frequencies of 300Hz and 2150Hz

Details can be found linked below
Introducing the SSA-WG

It was quite the journey. It was my first design from scratch. I used Soundeasy for crossover design. Learned woodworking skills along the way.
They sound very good.

Here's a few pics.

 

[planet10]

Very nice job with the bamboo ply. What grade did you use?

dave

 

[slogan2112]

Thanks Dave, I don’t think bamboo has a grade like Baltic birch...I could be wrong. I used 1” thick cross laminated vertical grain carbonized bamboo ply. There were some small voids on the edges I filled with epoxy. Hearing from others it’s kind of hit or miss on the consistency.

Scott

 

[planet10]

It does, it comes in horizonatl, vertical, and stranded varietes. I do not recommend the horizontal, probably not as good (but not as pretty) as good BB. Vertical is what i find most used, stranded thou is better by a long margin, and has a much tougher surface as far as collecting dings goes.

dave

 

[slogan2112]

I used the vertical type and that's also what I have seen most used. It's very hard, you need good sharp tools. Really no dings during the build. Here's a few pictures. The top is stacked end pieces to highlight the bamboo ends. I find it an excellent material for speaker building.

 

[planet10]

Thanx,

We have used both vertical & stranded, the stranded is something else. The vertical is still very good.

dave

 

[vinylkid58]

I used the vertical type and that's also what I have seen most used. It's very hard, you need good sharp tools. Really no dings during the build. Here's a few pictures. The top is stacked end pieces to highlight the bamboo ends. I find it an excellent material for speaker building.

Wow, that's some very fine looking joinery.

jeff

 

[JRSystems]

Outstanding cabinet work!

 

[Mrcloc]

Compared to a lot of what I've seen here, fairly simple, but it gives me exceptional quality and stereo image, so I really do enjoy my music.

Pair of MTM speakers, custom designed, sealed for now (Q=0.84, IIRC). Based on Visaton W170S and SC10N, likely change to Peerless tweeters (can't remember which right now).

Source is a PC with a Creative Sound Blaster X-Fi Fatal1ty, connected to my own design 330 W (4 ohms) via a lovely QED J2P.