Identify Tweeter

canadianicon25
canadianicon25 Posts: 200
edited July 2010 in Vintage Speakers
Can anyone tell me what model tweeter this is:

[IMG][/img]th_IMG_1446.jpg

[IMG][/img]th_IMG_1448.jpg
Post edited by canadianicon25 on
· Share on FacebookShare on Twitter

Comments

  • Conradicles
    Conradicles Posts: 6,138
    edited July 2010
    sl1000
    · Share on FacebookShare on Twitter
  • Vette C6.r
    Vette C6.r Posts: 1,560
    edited July 2010
    Sl 1000.
    · Share on FacebookShare on Twitter
  • Vette C6.r
    Vette C6.r Posts: 1,560
    edited July 2010
    Conradicles wrote: »
    sl1000

    One second too late. :)

    I don't ever recall that yellowish brownish tint to them though.
    · Share on FacebookShare on Twitter
  • Bobsama
    Bobsama Posts: 526
    edited July 2010
    SL1000 of course, though it looks like it was from a smoker's house or from flood damage or something (I'm not an expert--but they look like crap. The domes might have yellowed a bit, but nowhere near that badly).
    polkaudio Monitor 5 Series II
    polkaudio SDA-1 (with the SL1000)
    TEAC AG-H300 MK III stereo receiver
    beyerdynamic DT-880 Premium (600 Ω) headphones
    SENNHEISER HD-555 headphones
    Little Dot MK IV tube headphone amp
    Little Dot DAC_I balanced D/A converter
    · Share on FacebookShare on Twitter
  • geppy1
    geppy1 Posts: 3,075
    edited July 2010
    Hold on. It is a SL1000 faceplate but the magnet is from a Denmark made Peerless. The 7514___ tells us this. Someone replaced the faceplate. Easy to do if you get the gap right. keith
    · Share on FacebookShare on Twitter
  • dorokusai
    dorokusai Posts: 25,577
    edited July 2010
    geppy1 wrote: »
    Hold on. It is a SL1000 faceplate but the magnet is from a Denmark made Peerless. The 7514___ tells us this. Someone replaced the faceplate. Easy to do if you get the gap right. keith

    Keith....you think too much. It's an SL1000 for all intents and purposes. I've seen the same things you have in my travels. Just because the numbers don't make sense....don't lose your head.

    I've owned by the book RTA12C, that were drivered RTA12...figure that one out.

    The Monitor and RTA series is the worst series to try and nail down consistency. That's why it's been so hard to work up a Compendium....hint hint.

    Mark
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
    · Share on FacebookShare on Twitter
  • skrol
    skrol Posts: 3,393
    edited July 2010
    Some of the SL-1000 were labeled 7514___. The dome is a give away. It is definitely not the Peerless silk dome that we know and love.

    Compendium for Monitors and RTAs, mmmm... Sounds like something I've been working on.
    Stan
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, 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, PSW110 , 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, PSW10 (DXi104 upgrade); 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
    · Share on FacebookShare on Twitter
  • dorokusai
    dorokusai Posts: 25,577
    edited July 2010
    skrol wrote: »
    Some of the SL-1000 were labeled 7514___. The dome is a give away. It is definitely not the Peerless silk dome that we know and love.

    I don't believe there's any confusion between the SL1000 and the Peerless....unless I missed something. I digress, as I've read the SL1000 being confused in typed speech in regards to the Peerless. But most certainly not in regards to a physical or visual inspection and/or picture.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
    · Share on FacebookShare on Twitter
  • geppy1
    geppy1 Posts: 3,075
    edited July 2010
    I am telling you guys, the faceplate has been switched.

    One big clue (besides the numbers)is the screws are philips. They look chewed ups to?? The SL1000s all came with allen head screws.

    Polk stopped using the Denmark made tweeters in 1980 The SL1000s did not come out until late 82. The 7514 ___denotes Denmark .. ANYTHING 5514___ denotes US made units

    The last two numbers are the year it was made. It looks like 1980 to me. That is two years before the SL1000 was even out.

    I have switched enough magnets around and can tell you the sound of the tweeter changes.

    Bottomline. These are SL1000 faceplates with 1980 Denmark made peerless magnets and screws. Would I lie to you??? keith
    · Share on FacebookShare on Twitter
  • Bobsama
    Bobsama Posts: 526
    edited July 2010
    What's with the dome and solder lines?
    polkaudio Monitor 5 Series II
    polkaudio SDA-1 (with the SL1000)
    TEAC AG-H300 MK III stereo receiver
    beyerdynamic DT-880 Premium (600 Ω) headphones
    SENNHEISER HD-555 headphones
    Little Dot MK IV tube headphone amp
    Little Dot DAC_I balanced D/A converter
    · Share on FacebookShare on Twitter
  • Bobsama
    Bobsama Posts: 526
    edited July 2010
    Bobsama wrote: »
    What's with the dome and solder lines?

    I'm just curious--I didn't think faceplates (on these tweeters at least) were so interchangeable.
    polkaudio Monitor 5 Series II
    polkaudio SDA-1 (with the SL1000)
    TEAC AG-H300 MK III stereo receiver
    beyerdynamic DT-880 Premium (600 Ω) headphones
    SENNHEISER HD-555 headphones
    Little Dot MK IV tube headphone amp
    Little Dot DAC_I balanced D/A converter
    · Share on FacebookShare on Twitter
  • skrol
    skrol Posts: 3,393
    edited July 2010
    The dome is not Peerless that was used in Polk speakers. Are the front and back photos of the same tweeter?
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, 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, PSW110 , 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, PSW10 (DXi104 upgrade); 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
    · Share on FacebookShare on Twitter
  • skrol
    skrol Posts: 3,393
    edited July 2010
    I certainly have not seen all concerning Polk, however, all the SL-1000 tweeters that I have seen have a sticker on the back. It appears that the sticker was removed. I don't know what may have been stamped on the plate under the sticker.

    Also all the Denmark Peerless tweeters that I have seen have smooth machined plates (with the exception of the more modern version) vs the textured plate shown. Most of the USA Peerless are textured as is the SL-1000. However, I haven't seen an SL-1000 with flat edges on the plate. The original Denmark Peerless has flats while the USA are round.

    Reference: http://www.polkaudio.com/forums/showthread.php?t=99168

    My guess is that it is an early Polk developed replacement for the Denmark Peerless (early SL-1000, possibly a prototype ?) .
    Stan
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, 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, PSW110 , 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, PSW10 (DXi104 upgrade); 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
    · Share on FacebookShare on Twitter
  • skrol
    skrol Posts: 3,393
    edited July 2010
    I did a photographic overlay of a SL-1000 on top of a Peerless. It looks from the top that the faces could be interchangeable. The screws and lead lines look to line up. However, the dome still isn't right for a Peerless. It also looks a little odd for an SL-1000 but much closer. I still think prototype or early SL-1000.
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, 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, PSW110 , 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, PSW10 (DXi104 upgrade); 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
    · Share on FacebookShare on Twitter
  • geppy1
    geppy1 Posts: 3,075
    edited July 2010
    I have changed or adjusted more then 20 of them. You just have to make sure and get the VC gap right. Takes 3 minutes. keith
    · Share on FacebookShare on Twitter
  • pitdogg2
    pitdogg2 Posts: 25,694
    edited July 2010
    geppy1 wrote: »
    I have changed or adjusted more then 20 of them. You just have to make sure and get the VC gap right. Takes 3 minutes. keith

    I'm backing Keith on this. It would be simple to exchange diaphragm's i.e. face plates. I always wondered why Polk did not make theirs like some of the Peerless tweeters that you can buy new diaphragms for when you toast a voice coil.

    I recently had a SL1000 go bad all of a sudden one minute it was playing fine the next it made wierd sounds but played. I turned off the juice looked it over noticed the diaphragm was a little rippled near the top. Next day I went to play the SDA's and no sound out of the tweeter. I bought a spare used SL1000 from a well known forum member. I had taken the old SL1000 face plate allen screws out and noticed something that we have talked about plenty here on the forum, but happening to woofers and NOT tweeters and that is magnet shift. After you take out the 4 screws the face plate and diaphragm will come right off. In my case the center magnet had come unglued and attached itself to the top of the outer ring magnet pinching the voice coil. If not for the death grip of those two magnets the face plate and VC would of lifted right off. I think in time we may hear more about the tweeter magnets coming unglued and shifting making your tweeter useless. At this time i do not know of any way to stop this like the JB weld fix for woofers
    Ivan
    · Share on FacebookShare on Twitter
  • geppy1
    geppy1 Posts: 3,075
    edited July 2010
    The center item is the pole piece. I had one tweeter that I managed to get all 4 pieces realigned but it took and hour of **** around Not worth it.
    · Share on FacebookShare on Twitter