On to the next one...

BKphoto
BKphoto Posts: 409
edited April 2014 in DIY, Mods & Tweaks
My set of Infinity RSe

P1010669_zps1d7cefe2.jpg


P1010691_zps7b6442d3.jpg


P1010692_zps87913a34.jpg


going to sand and stain black...

obviously recap and replace resistor...also want to take Ohm reading when pot is set at flat and replace with resistor....never understood this adjustment when we can adjust atthe preamp/integrated amp


what say you...?
Marantz 1152 DC- Denon DP 1200, Soundsmith Carmen MKII- ADS L980 - Blue Jeans IC's
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  • westmassguy
    westmassguy Posts: 6,850
    edited April 2014
    Looks like a fun project. I would advise against removing the L-Pad. It's there for a reason. A good cleaning with DeoxIT should square it away.
    Home Theater/2 Channel:
    Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
    Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
    Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
    Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
    Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer

    dhsspeakerservice.com/
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  • BKphoto
    BKphoto Posts: 409
    edited April 2014
    should be fun...guys on the Infinity part of Audiokarma said its fine just as long as the resistor is above 10w...not going crazy with the caps...less of a budget for these...
    Marantz 1152 DC- Denon DP 1200, Soundsmith Carmen MKII- ADS L980 - Blue Jeans IC's
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  • westmassguy
    westmassguy Posts: 6,850
    edited April 2014
    The EMITs deserve a quality cap. You can go more cost effective on the Lo-Pass
    Home Theater/2 Channel:
    Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
    Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
    Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
    Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
    Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer

    dhsspeakerservice.com/
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  • BKphoto
    BKphoto Posts: 409
    edited April 2014
    its gonna be quality but not as much as i spent on the polks....it will be waaaay better than what is in there now...just not going crazy
    Marantz 1152 DC- Denon DP 1200, Soundsmith Carmen MKII- ADS L980 - Blue Jeans IC's
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  • zingo
    zingo Posts: 11,258
    edited April 2014
    BKphoto wrote: »
    sas long as the resistor is above 10w...

    This is what I've heard as well. Set the L-pad for flat, measure the resistance, then replace with an equal value high power resistor.

    Great project!
    Jake
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  • BKphoto
    BKphoto Posts: 409
    edited April 2014
    By the way, my Monitor 10-2A's sound amazing....very happy
    Marantz 1152 DC- Denon DP 1200, Soundsmith Carmen MKII- ADS L980 - Blue Jeans IC's
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  • BKphoto
    BKphoto Posts: 409
    edited April 2014
    zingo wrote: »
    This is what I've heard as well. Set the L-pad for flat, measure the resistance, then replace with an equal value high power resistor.

    Great project!

    yeah...loving that project....the man-cave/garage/workshop speakers...
    Marantz 1152 DC- Denon DP 1200, Soundsmith Carmen MKII- ADS L980 - Blue Jeans IC's
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  • BKphoto
    BKphoto Posts: 409
    edited April 2014
    P1010695_zps9dcd4e3d.jpg



    P1010696_zps680efd65.jpg
    Marantz 1152 DC- Denon DP 1200, Soundsmith Carmen MKII- ADS L980 - Blue Jeans IC's
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  • 11tsteve
    11tsteve Posts: 1,166
    edited April 2014
    you painted the wood as well or is it dark stain. I see the MinWax can there.....


    I tried many many many different resistors in place of the Lpads.... and the speaks never sounded quite right. I even went up to MResist Supremes.
    Took apart the Lpads , DeOxit, and, well, it was just weird. Just sounded right.
    Polk Lsi9
    N.E.W. A-20 class A 20W
    NAD 1020 completely refurbished
    Keces DA-131 mk.II
    Analysis Plus Copper Oval, Douglass, Morrow SUB3, Huffman Digital
    Paradigm DSP-3100 v.2
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  • BKphoto
    BKphoto Posts: 409
    edited April 2014
    black texture paint on front, black stain on sides...

    its a pot that only using 2 legs...which is just a variable resistor...

    the bigger speakers use L-pads...
    Marantz 1152 DC- Denon DP 1200, Soundsmith Carmen MKII- ADS L980 - Blue Jeans IC's
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  • 11tsteve
    11tsteve Posts: 1,166
    edited April 2014
    it is the same as what is in my Rsb for highs.
    Polk Lsi9
    N.E.W. A-20 class A 20W
    NAD 1020 completely refurbished
    Keces DA-131 mk.II
    Analysis Plus Copper Oval, Douglass, Morrow SUB3, Huffman Digital
    Paradigm DSP-3100 v.2
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  • BKphoto
    BKphoto Posts: 409
    edited April 2014
    when you look at the cross over are all 3 legs being used or just 2...?
    Marantz 1152 DC- Denon DP 1200, Soundsmith Carmen MKII- ADS L980 - Blue Jeans IC's
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  • BKphoto
    BKphoto Posts: 409
    edited April 2014
    its confusing...
    Marantz 1152 DC- Denon DP 1200, Soundsmith Carmen MKII- ADS L980 - Blue Jeans IC's
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  • BKphoto
    BKphoto Posts: 409
    edited April 2014
    like I said long time Infinity guys said it was ok...I think the problem starts when there is one for mids and another for the highs
    Marantz 1152 DC- Denon DP 1200, Soundsmith Carmen MKII- ADS L980 - Blue Jeans IC's
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  • 11tsteve
    11tsteve Posts: 1,166
    edited April 2014
    no. on mine only Two legs were used, but yours look to be the same as the high pass parts. The parts list here.... http://www.infinity-classics.de/technik/manuals/RSe_technical_sheet.pdf ... confirms it as the same part that is with my Rsb. AT least the earlier models.
    What are you confused about?
    Polk Lsi9
    N.E.W. A-20 class A 20W
    NAD 1020 completely refurbished
    Keces DA-131 mk.II
    Analysis Plus Copper Oval, Douglass, Morrow SUB3, Huffman Digital
    Paradigm DSP-3100 v.2
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  • Face
    Face Posts: 14,340
    edited April 2014
    A typical L-Pad consists of adjustable resistance in series and parallel, replacing it with a single resistor will most likely have a negative effect the speaker's response.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
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  • BKphoto
    BKphoto Posts: 409
    edited April 2014
    its not an L-pad, its a pot

    L-pad uses 2 resistors and a pot uses 1...
    Marantz 1152 DC- Denon DP 1200, Soundsmith Carmen MKII- ADS L980 - Blue Jeans IC's
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  • BKphoto
    BKphoto Posts: 409
    edited April 2014
    11tsteve wrote: »
    What are you confused about?

    the technical difference in the two sounds confusing...until finally someone just boiled it down to brass tax
    Marantz 1152 DC- Denon DP 1200, Soundsmith Carmen MKII- ADS L980 - Blue Jeans IC's
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  • 11tsteve
    11tsteve Posts: 1,166
    edited April 2014
    BKphoto wrote: »
    its not an L-pad, its a pot

    L-pad uses 2 resistors and a pot uses 1...
    sorry man, it is an L-pad. I am not sure why we are stuck on this.

    http://www.bcae1.com/lpad.htm

    this is how the Infinty controls are constructed.
    Polk Lsi9
    N.E.W. A-20 class A 20W
    NAD 1020 completely refurbished
    Keces DA-131 mk.II
    Analysis Plus Copper Oval, Douglass, Morrow SUB3, Huffman Digital
    Paradigm DSP-3100 v.2
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  • westmassguy
    westmassguy Posts: 6,850
    edited April 2014
    It appears you're both correct. The component is a typical L-Pad, however only two legs are being used. The 3rd leg, which normally shunts to ground, is not being used, so it's essentially a variable resistor, or "Pot".
    Home Theater/2 Channel:
    Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
    Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
    Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
    Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
    Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer

    dhsspeakerservice.com/
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  • 11tsteve
    11tsteve Posts: 1,166
    edited April 2014
    ah... I see. BK tried to make that point and I missed it. Thanks for re-pointing that out. Now I feel like a jack-***
    Polk Lsi9
    N.E.W. A-20 class A 20W
    NAD 1020 completely refurbished
    Keces DA-131 mk.II
    Analysis Plus Copper Oval, Douglass, Morrow SUB3, Huffman Digital
    Paradigm DSP-3100 v.2
    · Share on FacebookShare on Twitter
  • 11tsteve
    11tsteve Posts: 1,166
    edited April 2014
    so then, these speakers suffer from an impedance shift when that knob is moved?
    Polk Lsi9
    N.E.W. A-20 class A 20W
    NAD 1020 completely refurbished
    Keces DA-131 mk.II
    Analysis Plus Copper Oval, Douglass, Morrow SUB3, Huffman Digital
    Paradigm DSP-3100 v.2
    · Share on FacebookShare on Twitter
  • westmassguy
    westmassguy Posts: 6,850
    edited April 2014
    11tsteve wrote: »
    so then, these speakers suffer from an impedance shift when that knob is moved?
    That would be my guess
    Home Theater/2 Channel:
    Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
    Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
    Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
    Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
    Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer

    dhsspeakerservice.com/
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  • 11tsteve
    11tsteve Posts: 1,166
    edited April 2014
    well, now I am confused as to why it was done this way instead of using a simple pot.
    Polk Lsi9
    N.E.W. A-20 class A 20W
    NAD 1020 completely refurbished
    Keces DA-131 mk.II
    Analysis Plus Copper Oval, Douglass, Morrow SUB3, Huffman Digital
    Paradigm DSP-3100 v.2
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  • Face
    Face Posts: 14,340
    edited April 2014
    11tsteve wrote: »
    well, now I am confused as to why it was done this way instead of using a simple pot.
    They already had 10,000 l-pads sitting around. :smile:
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
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  • 11tsteve
    11tsteve Posts: 1,166
    edited April 2014
    Face wrote: »
    They already had 10,000 l-pads sitting around. :smile:
    coffee, nose, napkin

    all joking aside, just based on what I have read, it seems like the crossover point would change with the impedance if left ungrounded. Would this be what they had in mind for changing the frequency response of the driver? I, of course, always assumed it was a matter of just variable resistance.

    Is this too much thread derailment BK?
    Polk Lsi9
    N.E.W. A-20 class A 20W
    NAD 1020 completely refurbished
    Keces DA-131 mk.II
    Analysis Plus Copper Oval, Douglass, Morrow SUB3, Huffman Digital
    Paradigm DSP-3100 v.2
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  • Face
    Face Posts: 14,340
    edited April 2014
    11tsteve wrote: »
    Would this be what they had in mind for changing the frequency response of the driver? I, of course, always assumed it was a matter of just variable resistance.
    Since it wasn't one of their TOTL speakers, it could just be a shortcut taken.

    As far as how much the changes in resistances affect response(besides level), it varies. Since ribbons generally have a very flat impedance curve compared to a typical non-ferrofluid dome, the changes may be minimal.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
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  • BKphoto
    BKphoto Posts: 409
    edited April 2014
    hahaha, I go away and all hell breaks loose...

    I really think Infinity did this so they can say they have more options than other makers in the same price...anyone can change the settings by their preamp or whatever you are using...The Infinity speakers I personally have owned have never been off of the flat setting...its a pain to reach around the back of each speaker all the time....
    Marantz 1152 DC- Denon DP 1200, Soundsmith Carmen MKII- ADS L980 - Blue Jeans IC's
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  • BKphoto
    BKphoto Posts: 409
    edited April 2014
    by the way, nothing wrong with a good derailment...
    Marantz 1152 DC- Denon DP 1200, Soundsmith Carmen MKII- ADS L980 - Blue Jeans IC's
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  • 11tsteve
    11tsteve Posts: 1,166
    edited April 2014
    it would just nice to understand exactly how the pots are operating. I have read some guys having success with a straight value change out with a resistor/ measured pot resistance.

    I honestly tried so many values between 1 ohm-5 ohm both in Mills 12W, Mundorf MOX 10W, and Mundorf MResist Supremes, both in the high and mids circuits. Even with allowing some burn in time, nothing ever sounded right until I put the pots back in, set to flat.

    On Trey's advice, I even tried a straight signal path with no pot and no resistor..... just a bit bright....
    Polk Lsi9
    N.E.W. A-20 class A 20W
    NAD 1020 completely refurbished
    Keces DA-131 mk.II
    Analysis Plus Copper Oval, Douglass, Morrow SUB3, Huffman Digital
    Paradigm DSP-3100 v.2
    · Share on FacebookShare on Twitter