Free Shipping on All Orders 1-866-764-1801

Vist our Online Store
+ Reply to Thread
Results 1 to 14 of 14
  1. #1

    Member Sales Rating: (0)

    Join Date
    Feb 2014
    Location
    The Rabbit Hole, Oregon
    Posts
    58

    Default By Request: Response plots on 2.3 - SL2000 vs RDO-194 tweeters

    OldmanSRS requested these, and I was curious, too. Since these are from my listening position, with room reflections, etc., I attempted to (nearly) match yesterday's plot of the 194s, but included a plot from today as the baseline.

    Black s/b the 194s, red, the SL-2000s.

    Name:  PolkR194vsSL2000050414.jpg
Views: 226
Size:  74.7 KB

  2. #2

    Member Sales Rating: (1)

    Join Date
    Dec 2003
    Location
    Sooner Country
    Posts
    3,984

    Default

    Design goal met.....

  3. #3

    Member Sales Rating: (0)

    Join Date
    Nov 2007
    Location
    Knoxville, TN
    Posts
    429

    Default

    Thanks for the plot. I would have expected much more difference the way most everyone hates them. I guess there's more to hate than just the response.
    '65 427 Shelby AC Cobra
    '72 Triumph TR-6
    __________________
    '88 Polk SDA SRS 1.2, with upgraded XO caps and Erse SDA inductors
    '86 Polk SDA CRS+
    '84 Polk Monitor 10A (Peerless tweeters)
    '05 HSU VTF-3 Sub
    '93 Carver TFM-35 (just because)
    '88 Carver M-1.0t (just because)
    '14 PGA2310 based custom remote volume control
    '88 Adcom GFP-555
    '88 Adcom GFA-555 (upgraded/restored)
    '05 Onkyo DV-555 media
    '89 Pioneer Laser Disc media
    '89 Sony SuperBeta HiFi media

  4. #4

    Member Sales Rating: (1)

    Join Date
    Dec 2003
    Location
    Sooner Country
    Posts
    3,984

    Default

    Quote Originally Posted by OldmanSRS View Post
    Thanks for the plot. I would have expected much more difference the way most everyone hates them. I guess there's more to hate than just the response.
    I isn't that peak at 12khz that is the issue. It is that the driver goes from being under the new driver from 1-3 kHz to being over it at 12khz. This makes it harsh sounding to some. The 194 is simply better balanced from bottom to top.

  5. #5

    Member Sales Rating: (0)

    Join Date
    Nov 2011
    Location
    Mid Michigan
    Posts
    113

    Default

    thank you for the plots, it is differently interesting thank you for posting that
    There is no cure....
    Luxman M117, SDA SRS 2.3, rear monitor 10, back rear bose 4.2, valodyne sub and 2 Onkyo m-504 amps Onkyo TX-NR709
    8mm, 7.62x39mm

  6. #6

    Member Sales Rating: (0)

    Join Date
    May 2009
    Location
    Plano, TX
    Posts
    272

    Default

    Good stuff!
    Yamaha DSP-A1 Integrated Amp
    (4) Polk Monitor 10B's w/SoniCaps, Mills, and RDO-194 tweets (R/L F/R)
    (2) Polk Monitor 4's w/peerless tweets (dual centers)
    B&O TX2 Turntable
    Nakamichi Cassette Deck 1
    Pioneer CLD-99 Elite LD
    Samsung BD-P2550 Blu-Ray/DVD
    LG LST-3410a OTA DVR
    Princeton AF3.0HD Monitor
    Optoma HD65 Projector

  7. #7

    Member Sales Rating: (0)

    Join Date
    Feb 2014
    Location
    The Rabbit Hole, Oregon
    Posts
    58

    Default

    Excellent point Mr. Gardner. I hadn't considered the matter from the perspective of the overall slope.

  8. #8

    Member Sales Rating: (31)

    Join Date
    Feb 2007
    Location
    Long Island
    Posts
    14,790

    Default

    What distance were these measured from?

    Distortion measurements may tell us more than just FR.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche

  9. #9

    Member Sales Rating: (0)

    Join Date
    Feb 2014
    Location
    The Rabbit Hole, Oregon
    Posts
    58

    Default

    Face,
    these plots are from my listening position, so the distance is about 15 Ft.

    I've moved on from the tweeters discussed in this post to the TL XO (tweeters only) and 198s. While I left the stock XO in place, so I could revert if needed, I'd really rather not return to the scene of that crime. I think this post already says all I wanted to say about the other tweeters.

  10. #10

    Member Sales Rating: (31)

    Join Date
    Feb 2007
    Location
    Long Island
    Posts
    14,790

    Default

    If you want a clean measurement of the tweeters, try from only 3' away. At 15', you're measuring the speaker and how it interacts with the room.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche

  11. #11

    Member Sales Rating: (0)

    Join Date
    Feb 2014
    Location
    The Rabbit Hole, Oregon
    Posts
    58

    Default

    The standard is 1 meter, and then I'd have to at least drag them outside, since I don't know of any anechoic chambers in the area in the audio range. I was also concerned that 1 meter might be a bit short given the 3 tweeters. Lastly, my ears are usually at 15 Ft. :)
    If I get around to posting what I just did, the picture will improve lots.

  12. #12

    Member Sales Rating: (31)

    Join Date
    Feb 2007
    Location
    Long Island
    Posts
    14,790

    Default

    You don't need to drag them outside, you can play with gating and also place a bass trap on the floor between the speaker and mic. You can also increase the distance to 2M to allow better driver summing.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche

  13. #13

    Member Sales Rating: (0)

    Join Date
    Feb 2014
    Location
    The Rabbit Hole, Oregon
    Posts
    58

    Default

    Quote Originally Posted by Face View Post
    You don't need to drag them outside, you can play with gating and also place a bass trap on the floor between the speaker and mic. You can also increase the distance to 2M to allow better driver summing.
    Truth, though I don't have bass traps at the moment. I do use a 4x6Ft. panel of HF absorbers on the outside of each speaker - about 4Ft. away, but the room is almost 800 sq.Ft. without a wall on the right side of the speaker locations, other than the skinny stuff mounting the foam panels (Auralex 2in. wedges), and vaulted ceilings going the wrong way. I've only got the OmniMic2 from Dayton Audio, and I haven't found a gating control. It seems like it's kind 'a running open loop depending on the DVD, rather than some sort of tracking sweep generator. The 15 Ft. bit is why I only provided comparative measurements.
    Last edited by SciFiTom; 05-14-2014 at 02:23 AM.

  14. #14

    Member Sales Rating: (1)

    Join Date
    Apr 2007
    Posts
    3,920

    Default

    Those plots are exactly how i would expect them to look, not enough from 1k-4k and to much above 10k especially at 12k.

    That is why I have replaced all of mine with 194's.
    Quote Originally Posted by Timothy Smith View Post
    WOW!

    That's like working your way through Katie Perry in order to get to Rosie O'Donnell.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

     

Similar Threads

  1. Response plots from 2.3s, and Maggie 1.7s
    By SciFiTom in forum Vintage Speakers
    Replies: 14
    Last Post: 05-13-2014, 10:09 AM
  2. Replies: 3
    Last Post: 04-13-2014, 04:19 PM
  3. SL2000 response charts in sda compendium show no spikes
    By candyliquor35m in forum Vintage Speakers
    Replies: 99
    Last Post: 08-02-2009, 02:41 PM
  4. Replies: 6
    Last Post: 04-04-2009, 02:42 AM
  5. SL2000 tweeter frequency response plots anybody?
    By daifanshi in forum Vintage Speakers
    Replies: 27
    Last Post: 06-21-2008, 11:58 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts