LSiM 707 bi-amp question

LSiM 707 bi-amp question.

I am assuming the bonding wire couples the mid-woofer, mid-driver and tweeter (basically 703 top half) from the two oval subwoofers correct? If so I'm looking to setup an active crossover for the subs and the top half set at 100Hz. Do I have to remove the passive crossovers? Is 100Hz appropriate? I'm trying to prevent too much roll off in the crossover region but also trying to prevent wasted energy from going to where they shouldn't.

I am breaking in a new pair of 707 and was playing different test tones, 20Hz and 30Hz at 10-80 watts and surprisingly the mid-woofer and mid-driver was trying to rattle of those frequencies?!? I felt active driver movement as I varied the volume. That can't be good?
Shouldn't the HPF even a passive crossover prevent those frequencies from reaching the smaller drivers?
Living Room Music-2.0 Polk LSiM 707 | McIntosh C47 | Rotel RB-1590 | Denon DP-2500A | Oppo BDP-103 | MacMini
Family Room Home Theater-7.2.2 (Atmos) Polk LSi25, Martin Logan Motion 50xt, Dual DSW microPRO 3000, fx500, T15, RC65i | Marantz SR7009 | McIntosh MA5200 AVR trigger HTPT FL&FR (independent 2.0) | Sony UBP-X800 4K | Xbox One S 4K | AppleTV | HTPC | Sony 75” XBR X850D 4K
Office Home Theater-5.1 Polk RT55, CS400, PSW450, T15 | Onkyo TX-SR705 | Xbox 360 MCE | AppleTV | Samsung 55”
Office Music-2.0 KEF Q100 | Sansui AU-6900 | Sansui FR-1080
Master Bedroom Music-2.0 Totem Hawk | Rotel RA-1570 | Sony DVP-S500D | PS HX-500
Patio Music-2.0 Polk Atrium8 | AMC 2445 bridged
Airplay zones: Family Room (HDMI), Master Bedroom (Optical), Office (HDMI), Living Room (Optical), MA5200 (Optical), SR7009 (AVR direct) and Patio (analog). MacMini iTunes multi-stream to any, combo or all.
Spares: Polk LSiC, CS300, T15, Martin Logan Motion 40, Dynamo 500, Denon AVR-4802R, Onkyo DX-C540, Sony CDP-491, STR DE715
Most important piece: Pro-Ject VC-S Record Cleaning Machine

Comments

  • mrbigbluelightmrbigbluelight Posts: 7,440
    edited June 2017
    Almost gave the wrong advice. Rechecking my info.

    MrBigBlueLight
    Here to pick your brain & steal your cookies
    Shifting to Plan B+
  • mpitogompitogo Posts: 233
    i also did not see a wiring guide in the other section. short of opening it up, someone must know..?
    Living Room Music-2.0 Polk LSiM 707 | McIntosh C47 | Rotel RB-1590 | Denon DP-2500A | Oppo BDP-103 | MacMini
    Family Room Home Theater-7.2.2 (Atmos) Polk LSi25, Martin Logan Motion 50xt, Dual DSW microPRO 3000, fx500, T15, RC65i | Marantz SR7009 | McIntosh MA5200 AVR trigger HTPT FL&FR (independent 2.0) | Sony UBP-X800 4K | Xbox One S 4K | AppleTV | HTPC | Sony 75” XBR X850D 4K
    Office Home Theater-5.1 Polk RT55, CS400, PSW450, T15 | Onkyo TX-SR705 | Xbox 360 MCE | AppleTV | Samsung 55”
    Office Music-2.0 KEF Q100 | Sansui AU-6900 | Sansui FR-1080
    Master Bedroom Music-2.0 Totem Hawk | Rotel RA-1570 | Sony DVP-S500D | PS HX-500
    Patio Music-2.0 Polk Atrium8 | AMC 2445 bridged
    Airplay zones: Family Room (HDMI), Master Bedroom (Optical), Office (HDMI), Living Room (Optical), MA5200 (Optical), SR7009 (AVR direct) and Patio (analog). MacMini iTunes multi-stream to any, combo or all.
    Spares: Polk LSiC, CS300, T15, Martin Logan Motion 40, Dynamo 500, Denon AVR-4802R, Onkyo DX-C540, Sony CDP-491, STR DE715
    Most important piece: Pro-Ject VC-S Record Cleaning Machine
  • K_MK_M Posts: 1,010
    edited June 2017
    From manual.....

    "the upper set of binding posts are for the high frequency drivers"

    It does not specify, if it is only the tweeter, but the older Lsi series, the binding posts (upper) were just the tweeter, and the lower were the other drivers.
    Lsi15, Lsi9, LsiC,Rta11t,M5jr+,M4,SDA 3.1TL, SDA SRS 2.3TL, Rti6....Still listing stuff, a work in progress.
    B+W-
    Epos-
    Infinity-
    Advent-

  • K_MK_M Posts: 1,010
    Bi-Wiring (see Figure 1)
    Bi-wiring can provide noticeable improvements in the overall
    transparency of your loudspeakers. Run separate speaker wires
    to the low and high frequency drivers from a single amplifier
    (the upper set of binding posts are for the high frequency drivers,
    the lower set of binding posts are for the low frequency drivers):
    after removing the jumpers, connect one set of speaker wires
    to the upper terminals on each speaker and one set of wires
    to the lower terminals. Connect the other ends of both wire
    sets to the same amplifier outputs.
    Bi-Amping (see Figure 2)
    Bi-amping allows you to use separate amplifiers for the high and
    low frequency sections of your loudspeaker for greater dynamic
    range and lower distortion. We recommend that your separate
    amplifiers have identical gain to preserve the speaker’s voicing
    balance. After removing the jumpers, connect the speaker wires
    from the high frequency amplifier outputs to the upper set of
    terminal posts on each speaker. Follow the same procedure
    for connecting the low frequency amplifier outputs to the
    lower set of terminals. Remember to maintain correct wiring
    polarity (+ to +, – to –) in all connections.
    Lsi15, Lsi9, LsiC,Rta11t,M5jr+,M4,SDA 3.1TL, SDA SRS 2.3TL, Rti6....Still listing stuff, a work in progress.
    B+W-
    Epos-
    Infinity-
    Advent-

  • KennethSwaugerKennethSwauger Moderator Posts: 6,371
    Hello,
    The lower set of binding posts connect to the lower three bass components, the two woofers and the 6.5" mid-bass driver. The upper set of binding posts connect to the tweeter and mid-range components. I wouldn't recommend removing any of the internal crossover components.
    Cheers, Ken
    "And the house you live in will never fall down
    If you pity the stranger who stands at your gate" G.Lightfoot
  • mpitogompitogo Posts: 233
    really? what is the x/over point between the 6.5 and the 3" mid. I would have thought it could be a 703 split. I was looking to run a higher power amp for the two 6x9 with an active x-over at around 100hz and room correction such as the miniDSP 2x4HD.
    Living Room Music-2.0 Polk LSiM 707 | McIntosh C47 | Rotel RB-1590 | Denon DP-2500A | Oppo BDP-103 | MacMini
    Family Room Home Theater-7.2.2 (Atmos) Polk LSi25, Martin Logan Motion 50xt, Dual DSW microPRO 3000, fx500, T15, RC65i | Marantz SR7009 | McIntosh MA5200 AVR trigger HTPT FL&FR (independent 2.0) | Sony UBP-X800 4K | Xbox One S 4K | AppleTV | HTPC | Sony 75” XBR X850D 4K
    Office Home Theater-5.1 Polk RT55, CS400, PSW450, T15 | Onkyo TX-SR705 | Xbox 360 MCE | AppleTV | Samsung 55”
    Office Music-2.0 KEF Q100 | Sansui AU-6900 | Sansui FR-1080
    Master Bedroom Music-2.0 Totem Hawk | Rotel RA-1570 | Sony DVP-S500D | PS HX-500
    Patio Music-2.0 Polk Atrium8 | AMC 2445 bridged
    Airplay zones: Family Room (HDMI), Master Bedroom (Optical), Office (HDMI), Living Room (Optical), MA5200 (Optical), SR7009 (AVR direct) and Patio (analog). MacMini iTunes multi-stream to any, combo or all.
    Spares: Polk LSiC, CS300, T15, Martin Logan Motion 40, Dynamo 500, Denon AVR-4802R, Onkyo DX-C540, Sony CDP-491, STR DE715
    Most important piece: Pro-Ject VC-S Record Cleaning Machine
  • afterburntafterburnt Posts: 4,321
    I am waiting with baited breath to see what you find. I like mine for HT but I have chosen a different tac with music.
    Parlor: ifi iDSD Micro*Yamaha RX-A2030*Parasound Halo P5*Parasound Halo A-31*Parasound 2250v2*Emotiva XPA-200 Gen1*LSiM707 Fronts*LSiM706c Center*LSiM702f/x Surrounds*Monitor70 Series II Rears*Monitor40 Series II Presence*SVS PB2000 Sub X2*OPPO BDP-103D*Sony PS3*Samsung-55" LED 1080p Smart 3D HDTV UN55H7150AFXZA*TEAC TN-300*Wireworld Solstice cables* Wireworld Stratus power cables*Blue Jeans Cable LC-1's IC's*BJC Silver-Plated IC's* Bens Silver IC's

    Dungeon: Dancer Mini-Two Diamond*Auralic Aries Mini*Dayens Ampino Preamp*Dayens Ampino Monoblocks*North Star Intenso DAC*Wireworld Oasis cables*Wireworld Oasis IC's*Wireworld Aurora power cables*IFI nano IDSD bl*Pangea Silver USB*Cambridge CXU*

    Panamax MR5100*Panamax M8-AV-PRO*Furman PST-2+6

    Headgear: Sennheiser HD 558*Audio-Technica ATH-M40x*Sennheiser HD 598 Cs*Audio-Technica ATH-MSR7*Philips SHP9500S* Sennheiser 6xx

    Hello Kitty boombox

    Spare sortta: Usher N-6361* ifi iDsd nano*Marantz 1504* RX-A1040*Emotiva XPA-1L Gen2 X2*Emotiva XPA-3 Gen2*CSiA6 Center*Monitor40 Series II*SVS PB1000 Sub*Sony BDPS6500 Blu-ray player*POS 37" LCD*Douglas Connection Furez 12 AWG 2 Conductor*Blue Jeans Cable LC-1's IC's*Samsung BD-H5900 3D Blu-Ray*Usher N-6361


    Self Control is over rated.
    Mr. Sharpe wrote: »
    Meh these were extra $70 as an open box item so it didn’t much to me either way:)

  • F1nutF1nut Posts: 39,479
    k1csnkt51c93.jpg
    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."


  • mpitogompitogo Posts: 233
    Well duh, just uncouple them... the 3" mid and tweeter are as @KennethSwauger pointed out connected to the upper binding posts. I'll have to figure out the rest.

    Living Room Music-2.0 Polk LSiM 707 | McIntosh C47 | Rotel RB-1590 | Denon DP-2500A | Oppo BDP-103 | MacMini
    Family Room Home Theater-7.2.2 (Atmos) Polk LSi25, Martin Logan Motion 50xt, Dual DSW microPRO 3000, fx500, T15, RC65i | Marantz SR7009 | McIntosh MA5200 AVR trigger HTPT FL&FR (independent 2.0) | Sony UBP-X800 4K | Xbox One S 4K | AppleTV | HTPC | Sony 75” XBR X850D 4K
    Office Home Theater-5.1 Polk RT55, CS400, PSW450, T15 | Onkyo TX-SR705 | Xbox 360 MCE | AppleTV | Samsung 55”
    Office Music-2.0 KEF Q100 | Sansui AU-6900 | Sansui FR-1080
    Master Bedroom Music-2.0 Totem Hawk | Rotel RA-1570 | Sony DVP-S500D | PS HX-500
    Patio Music-2.0 Polk Atrium8 | AMC 2445 bridged
    Airplay zones: Family Room (HDMI), Master Bedroom (Optical), Office (HDMI), Living Room (Optical), MA5200 (Optical), SR7009 (AVR direct) and Patio (analog). MacMini iTunes multi-stream to any, combo or all.
    Spares: Polk LSiC, CS300, T15, Martin Logan Motion 40, Dynamo 500, Denon AVR-4802R, Onkyo DX-C540, Sony CDP-491, STR DE715
    Most important piece: Pro-Ject VC-S Record Cleaning Machine
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