no bass 3.1tl

ps4y2ch0ps4y2ch0 Posts: 33
edited January 13 in Troubleshooting
greetings! ive found a pair of 3.1 tl's upgraded with sonicaps and some kind of new resistors and other things. i ran them for years but not in at least two now. when i swapped them in yesterday, the right channel had zero bass at all. i have removed every driver and checked for lose wiring and tgere isnt any. visual inspection of crossover was good, nothing broken anyway. where should i start poking atound to find the fault and on what setting should the multimeter be on? im pretty new at this. thank you and im sorry if this is not in the right forum

Best Answers

  • dkfreebirddkfreebird Posts: 1,042
    Accepted Answer
    Have you checked the jumpers on the back of cabinets?
    2 Channel
    Polk 1.2tl's Fully modded with dreadnought.2.3tl's and 3.1tl's
    McCormack DNA 0.5 Deluxe
    Rogue Magnum 66
    Marantz HD-DAC 1
    Marantz UD 7007
    Pangea PC
    Wireworld Equinox 7 interconnects
    Wireworld Equinox 7 Speaker Cables and Jumpers
    Home theater
    Marantz SR 5009 Sunfire Signature 425x5-B&W Cdm1nt Cdm Center Channel-Rel Strata iii sub
«13

Answers

  • pitdogg2pitdogg2 Posts: 9,848
    Torn midwoofer surround, or cabinet air leak would be my first thought.
  • FestYboyFestYboy Posts: 2,334
    Did you check for magnet shift? IIRC the 3.1s are 6ohm.
  • ps4y2ch0ps4y2ch0 Posts: 33
    theres no leak or torn surround. none of the drivers are receving low end signal. i figured it must be crossover related. all good places to start though. i have no clue how to check for magnet drif. i have multimeter but dont know how tobuse it yet
  • Viking64Viking64 Posts: 2,545
    I thought the 3.1's weren't passive? Maybe that is irrelevant, though. *Shrugs shoulders and uses a goose as a boomerang to the delight of eleven drunk Shriners in space suits.*
  • ps4y2ch0ps4y2ch0 Posts: 33
    5 6.5's coupled to a 12" passive. why a goose? youd have better luck with an african swallow...
  • FestYboyFestYboy Posts: 2,334
    "...Yes, but what also floats in water?"
  • ps4y2ch0ps4y2ch0 Posts: 33
    dkfreebird wrote: »
    Have you checked the jumpers on the back of cabinets?
    yes i did they are hot glued on the inside and not feeling to lose at the post. how would i check that with multimeter
  • dkfreebirddkfreebird Posts: 1,042
    edited January 13
    I’m talking about the jumpers on the posts. Are your speaker wires plugged into the top post or bottom post? If they are in the top plug them into the bottom post and that will tell you if it is internal.
    2 Channel
    Polk 1.2tl's Fully modded with dreadnought.2.3tl's and 3.1tl's
    McCormack DNA 0.5 Deluxe
    Rogue Magnum 66
    Marantz HD-DAC 1
    Marantz UD 7007
    Pangea PC
    Wireworld Equinox 7 interconnects
    Wireworld Equinox 7 Speaker Cables and Jumpers
    Home theater
    Marantz SR 5009 Sunfire Signature 425x5-B&W Cdm1nt Cdm Center Channel-Rel Strata iii sub
  • ps4y2ch0ps4y2ch0 Posts: 33
    yes the jumpers on the inside are tight as are the internal speaker wires and its all hot glued to stay that way.
  • dkfreebirddkfreebird Posts: 1,042
    Did you try the speaker wires on the bottom posts on the outside of the speakers?
    2 Channel
    Polk 1.2tl's Fully modded with dreadnought.2.3tl's and 3.1tl's
    McCormack DNA 0.5 Deluxe
    Rogue Magnum 66
    Marantz HD-DAC 1
    Marantz UD 7007
    Pangea PC
    Wireworld Equinox 7 interconnects
    Wireworld Equinox 7 Speaker Cables and Jumpers
    Home theater
    Marantz SR 5009 Sunfire Signature 425x5-B&W Cdm1nt Cdm Center Channel-Rel Strata iii sub
  • Viking64Viking64 Posts: 2,545
    ps4y2ch0 wrote: »
    yes the jumpers on the inside are tight as are the internal speaker wires and its all hot glued to stay that way.

    He means the jumpers on the outside.
  • Tony MTony M Posts: 5,367
    edited January 13
    I found the answer to NO BASS on a few occasions. 2 were mine, one was a friends goof.

    The + wire HAS to go from red to red.

    - wire then goes from black and black.

    If you don't get bass after checking the above, I can't help you except see if your receiver is sending the bass to a sub output.

    Good luck to you. You've got an awesome speaker set there!
    Most people just listen to music and watch movies. I EXPERIENCE them.
  • ps4y2ch0ps4y2ch0 Posts: 33
    im running pre straight into tube power amp, no sub. wiring is all correct. thanks for trying
  • ps4y2ch0ps4y2ch0 Posts: 33
    there are no outside jumpers because its done inside via nice wire
  • headrottheadrott Posts: 5,254
    ps4y2ch0 wrote: »
    there are no outside jumpers because its done inside via nice wire

    If that's true, I would verify that the wires inside (on the binding post cup) are in fact "jumpered" correctly. It is very unusual for them to be jumpered on the inside of the speaker binding post cup. I guess the previous owner and yourself never plan(ned) on doing bi-wiring?
    Relayer-Big-O-Poster.jpg
    Taken from a recent Audioholics reply regarding "Club Polk" and Polk speakers:

    "I'm yet to hear a Polk speaker that merits more than a sentence and 60 seconds discussion." :\

    "Green leaves reveal the heart spoken Khatru"- Jon Anderson

    "Have A Little Faith! And Everything You'll Face, Will Jump From Out Right On Into Place! Yeah! Take A Little Time! And Everything You'll Find, Will Move From Gloom Right On Into Shine!"- Arthur Lee
  • ps4y2ch0ps4y2ch0 Posts: 33
    i dont mind bi-wiring, but correct about the previous owne. i am contemplating chipping out the hot glue just to verify tightness on all the posts. to answer an earlier comment i hook up to the bottom two posts as recommended. and yes its wired correctly because it worked perfectly for years and havent changed a thing. i just wish i knew how to use this multimeter to check for solder issues
  • pitdogg2pitdogg2 Posts: 9,848
    There are two sets of outside binding post so therefore one needs to have a jumper in place outside between the upper and bottom red and black posts. See picture in ebay link

    https://m.ebay.com/itm/Pair-of-Audiophile-Polk-Audio-SRS-3-1TL-Speakers-Made-in-USA-Matching-Pair-/222223597464
  • pitdogg2pitdogg2 Posts: 9,848
    headrott wrote: »
    ps4y2ch0 wrote: »
    there are no outside jumpers because its done inside via nice wire

    If that's true, I would verify that the wires inside (on the binding post cup) are in fact "jumpered" correctly. It is very unusual for them to be jumpered on the inside of the speaker binding post cup. I guess the previous owner and yourself never plan(ned) on doing bi-wiring?

    Boom 100% agree with this^^^^^^
    Unscrew the binding post cup and show us a picture of the inside. There will be no need to remove any if the glue we will be able to tell right away.
  • F1nutF1nut Posts: 39,626
    Yep, we need pics. Inside and out.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


  • ps4y2ch0ps4y2ch0 Posts: 33
    wax6dlvos5vh.png
  • Tony MTony M Posts: 5,367
    You didn't say if the drivers moved in and out on that right tower. Could some be frozen now?
    Most people just listen to music and watch movies. I EXPERIENCE them.
  • ps4y2ch0ps4y2ch0 Posts: 33
    b16splx1ddd7.jpeg
  • ps4y2ch0ps4y2ch0 Posts: 33
    previous owner was very proud of his glue gun
  • Viking64Viking64 Posts: 2,545
    ps4y2ch0 wrote: »
    previous owner was very proud of his glue gun

    I am very proud of my "glue gun".
  • pitdogg2pitdogg2 Posts: 9,848
    edited January 13
    Get the polyfil out of the bottom. It should only be behind the woofers no where near passive radiator. Yes they are jumpered inside. BUT that is not something i would of done.
    I've never understood why someone would spend all the money on good caps yet not change or skimp on the resistors.
  • F1nutF1nut Posts: 39,626
    edited January 13
    ps4y2ch0 wrote: »
    b16splx1ddd7.jpeg

    That's a real mess!

    Try swapping crossovers to see if the problem follows.

    I have to add.....only an idiot would jump the posts internally.

    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


  • Tony MTony M Posts: 5,367
    How about just the speaker wires from the amp first?
    Most people just listen to music and watch movies. I EXPERIENCE them.
  • ps4y2ch0ps4y2ch0 Posts: 33
    already swapped speaker wires, and swapped rca's to be sure. does anyone know what a multimeter should read at the binding posts?
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