• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

AK Design Collaborative - Insignia-Class Economy Speakers (a.k.a Indignia)

Looks very good, Zilch. Glad you continued on without me since I haven't taken a stab at these things since the last version i posted.
 
Thanks, Dave!

Please model and verify what I've done in sim. I can provide whatever additional measurement data you may require for that.

I'm hoping you'll build up a pair to confirm the design and offer suggestions as to how it might be improved. We also need some consensus as to how it sounds. It looks like Ray is building a pair, and I'm encouraging Gordon to try this out also.

For my own part, I've done some additional work in comparison to active crossing, which I'll post, and I want to take another stab at the "Low-Q" and notch approaches, which may allow a slightly higher crossover point.
 
Unfortunately, I don't know when I'll have time to pick up another speaker assembly project. I'm already overdue to finish my big project... and that's in addition to 4 power amps that I now have parts here to assemble.

But, if anyone around Atlanta wants to assemble a pair, I'd be glad to listen and evaluate... :D

Regards,
Gordon.
 
Z,

I will throw the crossover in speaker workshop tonight and what it spits out. If you'd like, you can email me the .ZMA and .FRD files for the actual measured responses. Might make the sim a bit more accurate. If not, I'll just grab the PE measurements and use those. My email is my ak screenname at gmail dot com.
 
dnewma04 said:
I will throw the crossover in speaker workshop tonight and what it spits out. If you'd like, you can email me the .ZMA and .FRD files for the actual measured responses. Might make the sim a bit more accurate.
Click to expand...
attachment.php


attachment.php


Compare to PE measurements:

http://www.partsexpress.com/pdf/295-335g.pdf

http://www.partsexpress.com/pdf/275-0701.pdf
 

Attachments

  • Driver Responses.jpg
    Driver Responses.jpg
    51.1 KB · Views: 552
  • Raw LF.txt
    Raw LF.txt
    19.8 KB · Views: 16
  • Raw HF.txt
    Raw HF.txt
    20.1 KB · Views: 11
  • Driver Impedances.jpg
    Driver Impedances.jpg
    50 KB · Views: 541
  • Imp LF.txt
    Imp LF.txt
    8.2 KB · Views: 11
  • Imp HF.txt
    Imp HF.txt
    8.2 KB · Views: 9
Had another "Zilchlab" visit today, And as always, Was amazed at what is cooking there. This Speaker project may be even more impressive than the Equally stunning "Waveguide" loudspeaker. To have that much detail in such a small 2 way system is quite an accomplishment. Listening to a rock disc(Van Halens "Balance") really showed the muscle of the little guys. Great bass extention, Nice smooth high end, Even some very good imagining from a dome tweeter. I saw a very flat spectrum graph, And Zilchster is still doing some fine tuning. The speakers were very lively, If you walked into the lab, You would swear a pair of big 3 ways were playing. Do they have a huge boom, No, But it was better than some 10" divers I've heard. Hell, They could be used as main speakers in the right size room, And they'd be unequaled as surround speakers in a 5 channel HT. I'm talking B+W good here guys. Thanks to Zilch/Ray/Dave/Gorden, And all who had input, A stunning accomplishment!

A question, Will there be a board layout for the crossover connect points and so on? For us laymen. The baffle is not a huge issue. O'yeah, Those cabs are worth every cent.
P.S..Again, Thanks for the Pioneer Crossover work. Gonna wire'm up asap.:guitar:
 
Thanks for coming by, NFS!

Here's why Indignia's good:

attachment.php


Well, a couple of the reasons, anyway. :p:

Once the crossover is finalized, we'll be showing how to build them, yes.

Maybe we'll be able to talk Jackgiff into doing a PC board layout for the project.... :thmbsp:
 

Attachments

  • Csd.jpg
    Csd.jpg
    90 KB · Views: 706
Zilch said:
Thanks for coming by, NFS!

Here's why Indignia's good:

attachment.php


Well, a couple of the reasons, anyway. :p:

Once the crossover is finalized, we'll be showing how to build them, yes.

Maybe we'll be able to talk Jackgiff into doing a PC board layout for the project.... :thmbsp:
Click to expand...

Thats very flat, Is there still more than can be done? They look and sound awful nice right now. Is a tad more in the bass department feasible without giving anything up you now have? Maybe the design is what it is. As a bass reflex ported speaker guy, Had to ask.
 
Looks like they'd be perfect with a nice sub. 12" Dayton Reference in a sealed box... :thmbsp:
 
Yes, There perfect for a HT rig, They filled a pretty good size room with very clear music, In just stereo. 2 pair and a decent sub would be a great system. Throw in a DIY center speaker from PE, A good AVR(Don't have to go crazy with power)(I think Zilch was driving them with like 40wpc) And your set. I'm listing my HPM 60 rear speakers this week. These will be great surround speaks, And the wife will get off my ass for the 4 giant speakers in the LR. If you have a small Apt were space is an issue, These ARE the loudspeakers to use. Just my 2cents.
 
NeedForSpeed said:
Thats very flat, Is there still more than can be done? They look and sound awful nice right now. Is a tad more in the bass department feasible without giving anything up you now have? Maybe the design is what it is. As a bass reflex ported speaker guy, Had to ask.
Click to expand...
"The Seventh Seal" just kicked in here again. You want more bass, move 'em back toward a wall. They're presently playing in free space, without boundary reinforcement, and they're, well, "Mighty Mites" in that department.... :thmbsp:
 
Zilch said:
"The Seventh Seal" just kicked in here again. You want more bass, move 'em back toward a wall. They're presently playing in free space, without boundary reinforcement, and they're, well, "Mighty Mites" in that department.... :thmbsp:
Click to expand...

Sencore's tube testers come to mind. :D

Can someone explain to me how the 3D graph works, especially the time factor? :stupid:
 
YamahaFreak said:
Can someone explain to me how the 3D graph works, especially the time factor? :stupid:
Click to expand...
Impulse occurs at time zero. Frequency response is across the top.

Indignia driver outputs then decay uniformly at all frequencies. By 1.5 ms, they're all down 20 dB.

[Below that is "stuff." ;) ]
 
Zilch said:
"The Seventh Seal" just kicked in here again. You want more bass, move 'em back toward a wall. They're presently playing in free space, without boundary reinforcement, and they're, well, "Mighty Mites" in that department.... :thmbsp:
Click to expand...


Of course, A simple idea, It worked for the HPM's, It will work for those. Love that song, And it sounded great when I was there. An amazing listen for speakers not even set up properly, Just standing in the middle of the room. Hey Z, Got more Van Halen comin your way ASAP, And a surprise or two.
 
You must log in or register to reply here.
Back
Top Bottom