sda monitor 4s??? solve the mystery.

Melz709
Melz709 Posts: 32
edited March 2011 in Speakers
I just bought 3 pairs of polks a few days ago:

SDA 2s

Monitor 5j+s

monitor 4s

here is the issue...the 4s have a sda pug! refer to the pics. one speaker also has a selector switch. there is also no serial#. i checked all the vintage polk sites i could find, and saw NO monitor 4s like this.

if i am making a big stink about nothing, let me know, otherwise please shed some light on this for me.

thanks
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  • Tony M
    Tony M Posts: 11,195
    edited March 2011
    Looks very interesting for sure.

    Maybe an experiment that made it out of research. A 1-0ff.

    How many woofers and tweeters does it have?
    Most people just listen to music and watch movies. I EXPERIENCE them.
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  • Melz709
    Melz709 Posts: 32
    edited March 2011
    1 and 1.
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  • ben62670
    ben62670 Posts: 15,969
    edited March 2011
    That is not stock. I doubt Polk did anything like that. You can't do SDA with a single driver setup. Can you get it to play correctly? CAn you pull the XO out for a few pics?
    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
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  • Melz709
    Melz709 Posts: 32
    edited March 2011
    I agree ben...but if you open the pics, you can clearly see that the plastic back plate clearly is from Polk, which has added to my confusion. I am not clear as to what you want in the pics tho.
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  • Melz709
    Melz709 Posts: 32
    edited March 2011
    ...and yes, with a little experimenting with the "selector" I got them working in 2 channel.
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  • Toolfan66
    Toolfan66 Posts: 17,341
    edited March 2011
    This is a joke!!! The two black binding posts are the originals with the red one swapped out with a black one. The other two with the switch and SDA outlet was added for shock value.. Nothing more nothing less.

    This is worthless without pics of the inside...

    Nice try!!!
    Polk Audio SDA 2.3tl Fully Hot Rodded. 😎

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  • Polkersince85
    Polkersince85 Posts: 2,883
    edited March 2011
    ^^ +1
    I remember a thread about these but can't remember when. They are ligit.
    >
    >
    >This message has been scanned by the NSA and found to be free of harmful intent.<
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  • Toolfan66
    Toolfan66 Posts: 17,341
    edited March 2011
    Sal's are different. No way are these legit!! We need pics of the inside.
    Polk Audio SDA 2.3tl Fully Hot Rodded. 😎

    SVS SB16 X2

    Cary SLP-05/Ultimate Upgrade.
    Cary SA-500.1 ES Amps
    Cary DMS 800PV Network
    OPPO UDP 205/ModWright Modification
    VPI Scout TT / Dynavector 20x2
    Jolida JD9 Fully Modified

    VPI MW-1 Cyclone RCM

    MIT Shotgun 3 cables throughout / Except TT, and PC’s
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  • nooshinjohn
    nooshinjohn Posts: 25,467
    edited March 2011
    I thought these were intended to be surrounds for the SDA line, and a few were released to vendors for test purposes, but they did not really get far.

    It would be nice to see a pic or two of the speakers without the grills on and of the crossover. Interesting that they have the stock blade/blade connectors for the SDA cable.
    The Gear... Carver "Statement" Mono-blocks, Mcintosh C2300 Arcam AVR20, Oppo UDP-203 4K Blu-ray player, Sony XBR70x850B 4k, Polk Audio Legend L800 with height modules, L400 Center Channel Polk audio AB800 "in-wall" surrounds. Marantz MM7025 stereo amp. Simaudio Moon 680d DSD

    “When once a Republic is corrupted, there is no possibility of remedying any of the growing evils but by removing the corruption and restoring its lost principles; every other correction is either useless or a new evil.”— Thomas Jefferson
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  • Melz709
    Melz709 Posts: 32
    edited March 2011
    I am willing to take them apart and send pics...WILL POST THEM TOMORROW. not home right now. On iPad.

    Now, from your nice try comment toolforlife, I could assume that you think I need my 15 minutes by fabricating this.

    No.

    I am just a Polk lover that reached out to those with more knowledge than me for an explanation. I bought these to listen to, but if I have to take them apart...I will.

    Thanks noos, polker, and dskip for your imput. Tool, I'm just looking for a valid answer.
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  • Melz709
    Melz709 Posts: 32
    edited March 2011
    Will post pics around 8:30 - 9:00pm
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  • comfortablycurt
    comfortablycurt Posts: 6,745
    edited March 2011
    Looks like a possible prototype of the short lived SDS Surround Speakers(I think that's what they were called).

    IIRC, they created an SDA signal by sending both in phase and out of phase signals to the drivers...creating a very mild SDA effect that was intended to be an expansion of the front SDA speakers. They weren't really intended as surround speakers in the home theater sense, the way I understood it. If these are authentic, that's a rare item you've got there. Very cool.
    The nirvana inducer-
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    Audioquest Speaker Cables and IC's
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  • Toolfan66
    Toolfan66 Posts: 17,341
    edited March 2011
    Melz709 wrote: »
    I am willing to take them apart and send pics...WILL POST THEM TOMORROW. not home right now. On iPad.

    Now, from your nice try comment toolforlife, I could assume that you think I need my 15 minutes by fabricating this.

    No.

    I am just a Polk lover that reached out to those with more knowledge than me for an explanation. I bought these to listen to, but if I have to take them apart...I will.

    Thanks noos, polker, and dskip for your imput. Tool, I'm just looking for a valid answer.

    I'm just ribbing you. I still want to see the inside, would be intrested if this was just a mod. It looks like you could hook up two receivers and switch which one you want to listen too. The SDA outlet makes no sense..

    Sal's speakers look more liget, and to be very honest I really thought you were pulling our legs with this one.
    Polk Audio SDA 2.3tl Fully Hot Rodded. 😎

    SVS SB16 X2

    Cary SLP-05/Ultimate Upgrade.
    Cary SA-500.1 ES Amps
    Cary DMS 800PV Network
    OPPO UDP 205/ModWright Modification
    VPI Scout TT / Dynavector 20x2
    Jolida JD9 Fully Modified

    VPI MW-1 Cyclone RCM

    MIT Shotgun 3 cables throughout / Except TT, and PC’s
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  • ben62670
    ben62670 Posts: 15,969
    edited March 2011
    This is the closest thing I could find. Maybe Ken could help out.
    http://www.polkaudio.com/forums/showthread.php?t=79148
    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
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  • Toolfan66
    Toolfan66 Posts: 17,341
    edited March 2011
    So they could be an early prototype!! If they are they would be a rare find...
    Polk Audio SDA 2.3tl Fully Hot Rodded. 😎

    SVS SB16 X2

    Cary SLP-05/Ultimate Upgrade.
    Cary SA-500.1 ES Amps
    Cary DMS 800PV Network
    OPPO UDP 205/ModWright Modification
    VPI Scout TT / Dynavector 20x2
    Jolida JD9 Fully Modified

    VPI MW-1 Cyclone RCM

    MIT Shotgun 3 cables throughout / Except TT, and PC’s
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  • Melz709
    Melz709 Posts: 32
    edited March 2011
    Checking the post at work. Good to see that there is something to this. Will take them apart and post pics when I get off.

    Thanks for understanding tool...I'm going to have more posts, trust me.
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  • On3s&amp;Z3r0s
    On3s&amp;Z3r0s Posts: 1,013
    edited March 2011
    That's wild! So both the left and right channel go into the speaker pictured above and the blade/blade jones socket is used to connect that speaker to the other speaker??? (It sounds like that's how the SDS 400 worked but with the 1/4" jack instead of the jones socket.) Do both have the SDA jones socket?
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  • Melz709
    Melz709 Posts: 32
    edited March 2011
    Yes on3s, they do.
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  • On3s&amp;Z3r0s
    On3s&amp;Z3r0s Posts: 1,013
    edited March 2011
    Wild... so I guess that's how they're intended to be connected instead of through their own speaker wire binding posts to get the SDA/surround effect. It would be interesting to get the 2's (or any other SDA's you might have lying around) and those all hooked up to the same source.
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  • Melz709
    Melz709 Posts: 32
    edited March 2011
    as promised, the internals of the "SDA" m4s

    #1. pic of the back plate

    #2. inside

    #3. tweeter...definitely different.
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  • Melz709
    Melz709 Posts: 32
    edited March 2011
    lol.
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  • Melz709
    Melz709 Posts: 32
    edited March 2011
    m4 internal.jpg


    m4.1 internal.jpg


    m4 tweeter.jpg
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  • Melz709
    Melz709 Posts: 32
    edited March 2011
    lol...that wasnt intentional...im a goober.
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  • Toolfan66
    Toolfan66 Posts: 17,341
    edited March 2011
    Thanks!!!! What a mess,it's hard to tell if that it's legit or not. I really thought this was going to be a joke. Now the question is did polk have their hands in this/is this a prototype of some sort??

    Pics of the back of the driver??

    Thanks for posting these,and sorry for the rant above..
    Polk Audio SDA 2.3tl Fully Hot Rodded. 😎

    SVS SB16 X2

    Cary SLP-05/Ultimate Upgrade.
    Cary SA-500.1 ES Amps
    Cary DMS 800PV Network
    OPPO UDP 205/ModWright Modification
    VPI Scout TT / Dynavector 20x2
    Jolida JD9 Fully Modified

    VPI MW-1 Cyclone RCM

    MIT Shotgun 3 cables throughout / Except TT, and PC’s
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  • Melz709
    Melz709 Posts: 32
    edited March 2011
    Well let's see...I'm moving soon, so I put them in storage, and I went there and dismantled it on the spot. The driver is sill in storage.

    Don't worry bout the rant, there are hundreds of people putting fake crap online everyday, so I understand the skepticism, and I should have understood your point of view. I was just looking at who I was.

    I really think it's a prototype. This is Polk audio build quality. I owned a pair of 5jr+s for years, and there is nothing to make me think that someone other than Polk built this.
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  • Toolfan66
    Toolfan66 Posts: 17,341
    edited March 2011
    I think your correct.. I would keep them.
    Polk Audio SDA 2.3tl Fully Hot Rodded. 😎

    SVS SB16 X2

    Cary SLP-05/Ultimate Upgrade.
    Cary SA-500.1 ES Amps
    Cary DMS 800PV Network
    OPPO UDP 205/ModWright Modification
    VPI Scout TT / Dynavector 20x2
    Jolida JD9 Fully Modified

    VPI MW-1 Cyclone RCM

    MIT Shotgun 3 cables throughout / Except TT, and PC’s
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  • Melz709
    Melz709 Posts: 32
    edited March 2011
    Oh I am tool...I am. I just wish I had the complete history. Ben62670's link was very helpful.
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  • skrol
    skrol Posts: 3,393
    edited March 2011
    Do they have a date anywhere? On the drivers perhaps?
    Stan
    Stan

    Main 2ch:
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    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
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  • On3s&amp;Z3r0s
    On3s&amp;Z3r0s Posts: 1,013
    edited March 2011
    Wow, do they rattle when you shake 'em? Based on the description of the SDS 400 it definitely sounds like these are a prototype of that model. Too bad there isn't a schematic for them.
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  • Melz709
    Melz709 Posts: 32
    edited March 2011
    Skrol, I'll look for a date, but I haven't seen one so far. No rattle of any kind On3s...like I said the build quality is what you would expect from Polk.
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