PIEZO NXT type panel - Page 32

Ziggy · 6th June 2009, 12:08 PM

No I haven't...........do you think they would be worth a try?
In what way can they be better than a standard piezo cone driver?

el`Ol · 6th June 2009, 03:59 PM

I just got a pair of Dayton exciters and am starting my experiments. First cardboard (kind of a reference, since everyone has tried it). I just pressed it to the board and, well, sounded very strongly like cardboard. Then I tried a 97x77 cm Rohacell board I have left from my Planot experiments. No bass at all despite of the size (cardboard of the same size has a lot more). But the highs, uh la la. Reminds me more of the BMR than the Podium Sound. I think I could really live with it, and this is just a first test with the exciter mounted with its plastic enclosure.
Balsa plywood is ordered for further testing.

jzagaja · 6th June 2009, 05:14 PM

Dayton price is ok - lower than from NXT directly but only one coil diameter. What amazes me is that people stick them to the walls or windows and enjoy.

el`Ol · 6th June 2009, 08:20 PM

In parallel I am finishing a ~500 € per speaker 3-way project and I fear this could end with a shame compared to what is possible with these children´s toys.

jzagaja · 6th June 2009, 08:55 PM

Mine is also EUR 600,00 - Jordan/Bandor 1st order transmission line reference. Nice, transparent well defined sound for music lovers - still fighting with a polyester resin finishing/polishing. We at audiohobby.pl collect waiting list for Dayton exciters.

Ziggy · 7th June 2009, 09:34 AM

el'OL.............. and everyone : sorry..........but I just can't help myself .................................I TOOOOOOOOOOOOOOOLLLLLLLLLDDDDD YOU SOOOOOOOO

!!!

Have I missed something?.......what's a ''BMR''??

aczern · 7th June 2009, 10:01 AM

Quote:

Originally posted by Ziggy

Have I missed something?.......what's a ''BMR''??

BMR = Balanced Mode Radiator

http://www.nxtsound.com/420.html

http://www.nxtsound.com/index.php?id=428

el`Ol · 7th June 2009, 10:35 AM

Quote:

Originally posted by aczern

BMR = Balanced Mode Radiator

http://www.nxtsound.com/420.html

http://www.nxtsound.com/index.php?id=428

To further specify this:
My Rohacell panels have much better transparency (which I define as absence of fog) than the Podium Sound. But same as the BMR (that also consists of Rohacell, with concentric brass rings in the diaphragm) it has somewhat elevated harmonic distortion because of the non-linear behaviour of the material.
Altogether I wonder why no masses of DML panels are hanging on the walls across the world, combined with subs of course, and the MUCH worse "virtually invisible" speakers of this famous four letter company are still much more popular.

el`Ol · 7th June 2009, 06:02 PM

The prototypes of ma three-ways are running and they definitely needn´t fall in shame. A 6.5" fullrange combined with a conventional silk dome above 5 kHz seems to be a very good compromise between compression and transparency. I can imagine this could also be a physiologically correct crossover point in a dynamic/piezo DML hybrid. What remains is my question why one sees not more flat speakers on walls, but the current implementations don´t fully meet my audiophile demands.

jzagaja · 7th June 2009, 06:14 PM

el`Ol,

How we manage to change exciter position? I mean don't we destroy delicate coil centring?

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

6th June 2009, 12:08 PM	#311
Ziggy Account Disabled Join Date: Jul 2004 Location: West Australia	No I haven't...........do you think they would be worth a try? In what way can they be better than a standard piezo cone driver?

6th June 2009, 03:59 PM	#312
el`Ol diyAudio Member Join Date: May 2005 Location: Bavarian Forest	I just got a pair of Dayton exciters and am starting my experiments. First cardboard (kind of a reference, since everyone has tried it). I just pressed it to the board and, well, sounded very strongly like cardboard. Then I tried a 97x77 cm Rohacell board I have left from my Planot experiments. No bass at all despite of the size (cardboard of the same size has a lot more). But the highs, uh la la. Reminds me more of the BMR than the Podium Sound. I think I could really live with it, and this is just a first test with the exciter mounted with its plastic enclosure. Balsa plywood is ordered for further testing.

6th June 2009, 05:14 PM	#313
jzagaja diyAudio Member Join Date: Jun 2004 Location: Szczecin	Dayton price is ok - lower than from NXT directly but only one coil diameter. What amazes me is that people stick them to the walls or windows and enjoy.

6th June 2009, 08:20 PM	#314
el`Ol diyAudio Member Join Date: May 2005 Location: Bavarian Forest	In parallel I am finishing a ~500 € per speaker 3-way project and I fear this could end with a shame compared to what is possible with these children´s toys.

6th June 2009, 08:55 PM	#315
jzagaja diyAudio Member Join Date: Jun 2004 Location: Szczecin	Mine is also EUR 600,00 - Jordan/Bandor 1st order transmission line reference. Nice, transparent well defined sound for music lovers - still fighting with a polyester resin finishing/polishing. We at audiohobby.pl collect waiting list for Dayton exciters.

7th June 2009, 09:34 AM	#316
Ziggy Account Disabled Join Date: Jul 2004 Location: West Australia	el'OL.............. and everyone : sorry..........but I just can't help myself .................................I TOOOOOOOOOOOOOOOLLLLLLLLLDDDDD YOU SOOOOOOOO !!! Have I missed something?.......what's a ''BMR''??

7th June 2009, 06:02 PM	#319
el`Ol diyAudio Member Join Date: May 2005 Location: Bavarian Forest	The prototypes of ma three-ways are running and they definitely needn´t fall in shame. A 6.5" fullrange combined with a conventional silk dome above 5 kHz seems to be a very good compromise between compression and transparency. I can imagine this could also be a physiologically correct crossover point in a dynamic/piezo DML hybrid. What remains is my question why one sees not more flat speakers on walls, but the current implementations don´t fully meet my audiophile demands.

7th June 2009, 06:14 PM	#320
jzagaja diyAudio Member Join Date: Jun 2004 Location: Szczecin	el`Ol, How we manage to change exciter position? I mean don't we destroy delicate coil centring?

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)