Ribbon tweeters in SDA speakers??!!

Lightstar1Lightstar1 Posts: 56
edited January 2009 in DIY, Mods & Tweaks
Hey Guys...as I am preparing to send my crossovers to Ben to make them better than ever, a question came to mind....have any of you thought about putting ribbon tweeters (the smaller rectangular ones) in place of the tweeters in the SDA speakers? I was wondering if ribbons would sound better and smoother than the 2000 or 3000 tweeters or if it is possible and what would have to be done to make it work correctly.

Lightstar1
Post edited by Lightstar1 on

Comments

  • ben62670ben62670 Posts: 16,077
    edited January 2009
    Way to many variables to get it right. Stick with RDO's.
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben
  • TNRabbitTNRabbit Posts: 2,220
    edited January 2009
    ben62670 wrote: »
    Way to many variables to get it right. Stick with RDO's.

    x2...
    TNRabbit
    NO Polk Audio Equipment :eek:
    Sunfire TG-IV
    Ashly 1001 Active Crossover
    Rane PEQ-15 Parametric Equalizers x 2
    Sunfire Cinema Grand Signature Seven
    Carver AL-III Speakers
    Klipsch RT-12d Subwoofer
  • Mike ReeterMike Reeter Posts: 3,550
    edited January 2009
    [QUOTE I was wondering if ribbons would sound better and smoother than the 2000 or 3000 tweeters or if it is possible and what would have to be done to make it work correctly.


    The RDO's are better and smoother than the 2000 and 3000 tweeters.
    SDA SRS 2.3TL's/SDA SRS 3.1TL's/SDA CRS+4.1TL's and some other stuff
  • heiney9heiney9 Posts: 24,125
    edited January 2009
    Nope. Stick with the RD0's. If you want ribbon tweets...........then buy a speaker with ribbon tweets. The SDA's are designed to work as they are and the RD0 replacement tweeters, which were developed and engineered by POLK, are the ones to stick with.

    You will be amazed at how much your SDA's are transformed by a simple cap upgrade and new RD0194-1 (for sl2000) or RD0198-1 (for sl3000).

    Give that a try and if you are still unhappy in 6 mos to a year then move onto to something else completely.

    Good luck and keep us posted

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass

    Pass Aleph 30 | EE Avant Pre | EE Mini Max Plus DAC | MIT Shotgun S3 | MIT Z P/C's | updated SDA 1C| SQ Box Touch/Welbourne Labs P/S- Tubes add soul!
  • Lightstar1Lightstar1 Posts: 56
    edited January 2009
    Hey Thanks guys for the advise. The only reason why I asked is that I had always liked the sound of my Carver Amazings and they "seem" to be more detailed than the big SRS SDAs I have. Ben will be doing a rebuild on the crossovers because I am a dummy when it comes to that kind of thing so I am assuming this will help a bunch. Now for the next dumb question...what are the RD0 speakers?? Is there a picture I can look at and finally, do they improve the sound of the high end so that it is comparable to ribbons?? How much do they cost??
    Thanks for you help!
    Lightstar1
  • heiney9heiney9 Posts: 24,125
    edited January 2009
    I apologize as I assume (incorrectly) most people know what the RD0's are. They are updated silk dome replacement tweeters for all vintage Polk speakers using the original sl2000 or sl3000 tweeter.

    They are much smoother sounding getting rid of the +6dB spike and much of the harshness the sl's can exhibit. They are the preferred upgrade for many here on CP. They are $48 each shipped mention you are Club Polk member.

    No probably won't sound like ribbons..............but they are IMO, a huge improvement and they are plug-n-play.
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass

    Pass Aleph 30 | EE Avant Pre | EE Mini Max Plus DAC | MIT Shotgun S3 | MIT Z P/C's | updated SDA 1C| SQ Box Touch/Welbourne Labs P/S- Tubes add soul!
  • 4406bbl4406bbl Posts: 195
    edited January 2009
    rdos are the new replacement tweeter,they are $48 each for club members. I nave never heard them next to carvers so can't help there.
  • DanalesDanales Posts: 2
    I like the thought of at least trying this. I'm caught between the apples and oranges of SDAs vs Electro Stat. If ribbons could add some dexterity to the high end of the SDAs I'd be all for it. Has anybody tried in the 8 years since this thread was started?
  • tonybtonyb Posts: 31,648
    Danales wrote: »
    I like the thought of at least trying this. I'm caught between the apples and oranges of SDAs vs Electro Stat. If ribbons could add some dexterity to the high end of the SDAs I'd be all for it. Has anybody tried in the 8 years since this thread was started?

    Nope, you'd basically have to redesign the whole speaker to accommodate ribbons. Just buy a ribbon speaker and save the coin.

    HT SYSTEM-
    Sony 850c 4k
    Pioneer elite vhx 21
    Sony 4k BRP
    SVS SB-2000
    Polk Sig. 20's
    Polk FX500 surrounds

    Cables-
    Acoustic zen Satori speaker cables
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    Wireworld eclipse 7 ic's
    Audio metallurgy ga-o digital cable

    Kitchen

    Sonos zp90
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  • xschopxschop Posts: 1,099
    What would it take crossover-wise to implement in the late CRS?
  • DanalesDanales Posts: 2
    tonyb wrote: »
    Nope, you'd basically have to redesign the whole speaker to accommodate ribbons. Just buy a ribbon speaker and save the coin.

    I believe you on this but at a high level would love to understand what the challenges are. Crossover points? Phase alignment?
  • Dennis GardnerDennis Gardner Posts: 4,804
    edited April 2017

    The largest obstacle is going to be getting acceptance from the rabid protectors of all things SDA in this arena.......they tend to lash out from their cage as soon as you get within arms reach..... ;)

    There is no doubting that SDA was very heavily researched prior to its release and look at all the changes to the line that was made along its lifespan. They are one of the most involved crossover designs ever in the mass market.
    Post edited by Dennis Gardner on
    HT Optoma HD25 LV on 80" DIY Screen, Anthem MRX 300 Receiver, Pioneer Elite BDP 51FD Polk CS350LS, Polk SDA1C, Polk FX300, Polk RT55, Dual EBS Adire Shiva 320watt tuned to 17hz, ICs-DIY Twisted Prs, Speaker-Raymond Cable

    2 Channel Thorens TD 318 Grado ZF1, SACD/CD Marantz 8260, Soundstream/Krell DAC1, Audio Mirror PP1, Odyssey Stratos, ADS L-1290, ICs-DIY Twisted , Speaker-Raymond Cable
  • skrolskrol Posts: 2,830
    You should be pleased with the improvement in detail with the upgraded crossovers too.
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Monster HTS3600-MKII, Grado SR-225i; Technics SL-J2, Parasound PPH-100.

    HT:
    Marantz SR7010, Polk: RTA11TL (RDO198-1, XO and Damping Upgrades), S4, CS250, PSW10 (DXi104 upgrade), Marantz UD5005, Pioneer PL-530, Panasonic TC-P42S60

    Other stuff:
    Denon: DRA-835R, AVR-888, DCD-660, DRM-700A, DRR-780; Polk: S8, Monitor 5A, 5B, TSi100, RM7; Pioneer: CT-6R; Onkyo CP-1046F; Ortofon OM5E, Marantz: PM5004, CD5004, CDR-615; Parasound C/PT-600, HCA-800ii, Sony CDP-650ESD, Technics SA 5070, B&W DM601
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