This Tuesdays Tech Talk is about speakers with two tweeters

0 Members and 1 Guest are viewing this topic. Read 1821 times.

maty

  • Full Member
  • Posts: 1139
    • Nauscopio Scipiorum
Re: This Tuesdays Tech Talk is about speakers with two tweeters
« Reply #20 on: 19 Jul 2019, 11:34 am »
@Danny, what do you think about the supertweeter at 18 kHz (with only a cap). With the bass-reflex coincident with it.

Big woofer + tweeter + supertweeter.

maty

  • Full Member
  • Posts: 1139
    • Nauscopio Scipiorum
Re: This Tuesdays Tech Talk is about speakers with two tweeters
« Reply #21 on: 19 Jul 2019, 02:14 pm »
And Big woofer + midwoofer + tweeter

Old 3-ways from Yamaha. Yamaha NS-1000.




Yamaha NS-1000, crossover




Yamaha NS-1000, frequency




Yamaha NS-1000, impedance and phase




Closed box, without bass-reflex if I am not wrong.

maty

  • Full Member
  • Posts: 1139
    • Nauscopio Scipiorum
Re: This Tuesdays Tech Talk is about speakers with two tweeters
« Reply #22 on: 19 Jul 2019, 02:51 pm »
https://www.hifiengine.com/manual_library/yamaha/ns-1000m.shtml

Quote
Specifications

Type: 3 way, 3 driver loudspeaker system

Frequency Response: 40Hz to 20kHz

Power Handling: 100W

Crossover Frequency: 500, 6000Hz

Impedance: 8Ω

Sensitivity: 90dB

Bass: 1 x 300mm cone

Midrange: 1 x 88mm dome

Tweeter: 1 x 30mm dome

Enclosure: infinite baffle

Dimensions: 675 x 375 x 326mm

Weight: 31kg


http://www.troelsgravesen.dk/Yamaha-NS1000.htm

Jeff

  • Industry Contributor
  • Posts: 259
  • Test...
    • Sonic Craft, Inc.
Re: This Tuesdays Tech Talk is about speakers with two tweeters
« Reply #23 on: 23 Jul 2019, 11:03 pm »
More on the subject of comb filtering.

I guess I haven't hung around enough to see what everyone is doing :oops:  Very cool danny :thumb:

I recall the Tekton Enzo, with a three tweeter line array, measured pretty well by Stereophile. Even though it is a 2.5 way with ten inch woofers the mids looked decent.

They do not work like a line source.  A line source needs all the drive units to be center to center within the wave length of the lowest freq prominently produced .  And, they should be as  tall as the room to create a "line source" type wave front.  Of course, there are watered down versions of this that have some success.  Tekton (say the Impact) uses attenuation and outright phase rotation to blend the array.  Rather clever.

I think for the most part, danny is talking about speakers like these:

Danny Richie

  • Facilitator
  • Posts: 12639
    • http://www.gr-research.com
Re: This Tuesdays Tech Talk is about speakers with two tweeters
« Reply #24 on: 23 Jul 2019, 11:09 pm »

Jeff

  • Industry Contributor
  • Posts: 259
  • Test...
    • Sonic Craft, Inc.
Re: This Tuesdays Tech Talk is about speakers with two tweeters
« Reply #25 on: 23 Jul 2019, 11:15 pm »
Bub, that takes me back! :green:

Danny Richie

  • Facilitator
  • Posts: 12639
    • http://www.gr-research.com
Re: This Tuesdays Tech Talk is about speakers with two tweeters
« Reply #26 on: 23 Jul 2019, 11:34 pm »
Bub, that takes me back! :green:

Aspects of that go way back. Only you could have made that pic.

Wind Chaser

Re: This Tuesdays Tech Talk is about speakers with two tweeters
« Reply #27 on: 23 Jul 2019, 11:37 pm »
I'd also love to hear actual scenarios of visiting someone's home and showing them how to maximize their system.

That would be so cool!  :D :D