Polk Monitor 7 series 2

CylontymanyCylontymany Posts: 33
Are these true 8 ohm speakers or 6 ohm and what are the opinions on these?

Comments

  • mlistens03mlistens03 Posts: 1,021
    Monitor 7s are very well regarded around here, and I am wanting a pair myself (although I can’t really get one unfortunately). I believe they are 6 ohms, but you would have to wait for someone more knowledgeable about the monitor line to reply.
    2 channel
    Speakers: Mission 770 Freedoms
    Integrated amp: Technics SU-v75 and matching tuner
    CDP: Technics SL-PC20
    Cables: Monoprice, Monster, Acoustic Research, and a few generic ones
    TT: Technics SL-3200, direct drive
    Cartridge: Shure M97xE

    Pc gaming setup
    Receiver/amp: Yamaha RX-V665
    Computer: Lenovo g50 (soon to be upgraded to a Dell Precision 690 which is far from stock!!)
    Interconnects: Amazon basics HDMI, Acoustic Research HDMI, Monoprice speaker cables
    Speakers: Boston Acoustics CR75s

    Random equipment on standby:
    Onkyo TX-v940, JBL woofers and tweeters, single Klipsch KG .5, Yamaha guitar amplifier, Peavey Rage 158 guitar amplifier, Kicker comp 12” subwoofer, single Bose 802 series II, a whole bunch of 1”-3” full range drivers, Infinity Crescendo 3007s (on sale), Polk LSi25s
    txcoastal1 wrote: »

    You don't tell her you read the manual, and you tell her you know what the problem is, and you fixed it, because that what men do, fix things
    sure it has a flat response, and sure it has a lot of detail, and yes, it has good and clear lows. But is it enjoyable to listen to? Does it make you grin ear to ear? That’s what really matters.
    Seen somewhere on AudioKarma (I think)
  • CylontymanyCylontymany Posts: 33
    I already have the monitor 7 with peerless tweets but I am asking about the series 2
  • mlistens03mlistens03 Posts: 1,021
    edited May 4
    The series 2 uses the sl2500 I think, but I don’t know what the impedance is, I would assume it averages around ~6 ohms, although like I said, I don’t know a ton about these speakers so you will have to wait for someone else more knowledgeable to tell you the impedance.
    2 channel
    Speakers: Mission 770 Freedoms
    Integrated amp: Technics SU-v75 and matching tuner
    CDP: Technics SL-PC20
    Cables: Monoprice, Monster, Acoustic Research, and a few generic ones
    TT: Technics SL-3200, direct drive
    Cartridge: Shure M97xE

    Pc gaming setup
    Receiver/amp: Yamaha RX-V665
    Computer: Lenovo g50 (soon to be upgraded to a Dell Precision 690 which is far from stock!!)
    Interconnects: Amazon basics HDMI, Acoustic Research HDMI, Monoprice speaker cables
    Speakers: Boston Acoustics CR75s

    Random equipment on standby:
    Onkyo TX-v940, JBL woofers and tweeters, single Klipsch KG .5, Yamaha guitar amplifier, Peavey Rage 158 guitar amplifier, Kicker comp 12” subwoofer, single Bose 802 series II, a whole bunch of 1”-3” full range drivers, Infinity Crescendo 3007s (on sale), Polk LSi25s
    txcoastal1 wrote: »

    You don't tell her you read the manual, and you tell her you know what the problem is, and you fixed it, because that what men do, fix things
    sure it has a flat response, and sure it has a lot of detail, and yes, it has good and clear lows. But is it enjoyable to listen to? Does it make you grin ear to ear? That’s what really matters.
    Seen somewhere on AudioKarma (I think)
  • F1nutF1nut Posts: 39,620
    edited May 4
    Are these true 8 ohm speakers or 6 ohm?

    Why does it matter to you?
    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."


  • @Cylontymany they are 8ohm speakers.
  • delkaldelkal Posts: 216
    My opinion is the first model with the Peerless tweeters is MUCH nicer than the series 2. It would not be an upgrade.

    Polk claimed a lot of their early speakers were 8 ohm but many tested closer to 6 (and lower at certain frequencies). I don't think it makes any difference in the real world.
  • CylontymanyCylontymany Posts: 33
    I was wondering about the series 2 because 8 ohm impedance is easier to drive than 6 or 4 ohms. But since the series 2 would not be an upgrade-what about sideways? Has anyone done any comparisons? I will never part with mine but was curious about the series 2
  • mhardy6647mhardy6647 Posts: 17,648
    edited May 22
    I was wondering about the series 2 because 8 ohm impedance is easier to drive than 6 or 4 ohms. But since the series 2 would not be an upgrade-what about sideways? Has anyone done any comparisons? I will never part with mine but was curious about the series 2
    [emphasis added]

    The nominal impedance rating of a loudspeaker doesn't tell one much about how easy or hard it will be to drive. The impedance curve (along with phase) as a function of frequency will give some insight into how benign or (ahem) malignant of a load it might be :)

    Nice illustration (albeit hypothetical) from Eliot Sound Products (http://sound.whsites.net/patd.htm ) of a pretty typical impedance curve for a two-way loudspeaker with "typical" woofer and tweeter, and a second order crossover feeding each driver (with a Zobel network This also shows the nature of the load (as "seen" by the power amplifier) as a function of frequency (impedance).

    aqwux8bobdfe.png

    This is what the phase behavior of that simulated simple two-way speaker would look like.

    430a80hv8gvc.png

    This would probably be a nominally 4 or 6 ohm speaker -- based on the impedance in the 200 to 400 Hz region... but you can probably tell even from this simulation of a fairly ordinary speaker that one number doesn't tell much.

    I've never knowingly heard a "series 2", so I can't help with your questions.
    Hard to imagine that they'd better the originals -- which were, and are, pretty darned good sounding little monkey coffins.

    EDIT: PS It's stuff like the complexity of the speaker "load" as it is "seen" (or "felt", if one prefers) by an amplifier that goes a long way towards illustrating (I think!) why there is such a thing as amplifier/loudspeaker "synergy" :)



    "It's like watching a roomful of people who couldn't get through college algebra discussing the flaws of quantum physics theory. I guess it could be fun, but it's ultimately a waste of time." -- seen on audiokarma

    "Some amps run on self bias, some amps run on fixed bias. But his amps run on confirmation bias." -- seen on audioasylum

    "Writing about hifi is like dancing about architecture" -- paraphrasing some wag (possibly Frank Zappa)
  • CylontymanyCylontymany Posts: 33
    I saw a discussion over at Audiokarma about the Monitor 7 series 2 that is an 8 ohm speaker which sparked my interest. How good are they compared to my original peerless ones is what I am trying to find out.
  • mlistens03mlistens03 Posts: 1,021
    I saw a discussion over at Audiokarma about the Monitor 7 series 2 that is an 8 ohm speaker which sparked my interest. How good are they compared to my original peerless ones is what I am trying to find out.

    Peerless tweeters are better, the later tweeters (sl1000, sl2000, sl2500, sl3000, etc.) all had a spike in the treble between around 12-13 kilohertz I believe. Polk actually made the new RD0 line of tweeters as drop in replacements for the sl tweeters mentioned above. Customer service at its finest
    2 channel
    Speakers: Mission 770 Freedoms
    Integrated amp: Technics SU-v75 and matching tuner
    CDP: Technics SL-PC20
    Cables: Monoprice, Monster, Acoustic Research, and a few generic ones
    TT: Technics SL-3200, direct drive
    Cartridge: Shure M97xE

    Pc gaming setup
    Receiver/amp: Yamaha RX-V665
    Computer: Lenovo g50 (soon to be upgraded to a Dell Precision 690 which is far from stock!!)
    Interconnects: Amazon basics HDMI, Acoustic Research HDMI, Monoprice speaker cables
    Speakers: Boston Acoustics CR75s

    Random equipment on standby:
    Onkyo TX-v940, JBL woofers and tweeters, single Klipsch KG .5, Yamaha guitar amplifier, Peavey Rage 158 guitar amplifier, Kicker comp 12” subwoofer, single Bose 802 series II, a whole bunch of 1”-3” full range drivers, Infinity Crescendo 3007s (on sale), Polk LSi25s
    txcoastal1 wrote: »

    You don't tell her you read the manual, and you tell her you know what the problem is, and you fixed it, because that what men do, fix things
    sure it has a flat response, and sure it has a lot of detail, and yes, it has good and clear lows. But is it enjoyable to listen to? Does it make you grin ear to ear? That’s what really matters.
    Seen somewhere on AudioKarma (I think)
  • mhardy6647mhardy6647 Posts: 17,648
    I definitely prefer the Peerless tweeter, FWIW.

    I have minimal ears-on experience with the modern replacement/upgrade tweeters for the later series, so I don't have much to offer on that front, I'm afraid.
    "It's like watching a roomful of people who couldn't get through college algebra discussing the flaws of quantum physics theory. I guess it could be fun, but it's ultimately a waste of time." -- seen on audiokarma

    "Some amps run on self bias, some amps run on fixed bias. But his amps run on confirmation bias." -- seen on audioasylum

    "Writing about hifi is like dancing about architecture" -- paraphrasing some wag (possibly Frank Zappa)
  • westmassguywestmassguy Posts: 6,020
    mlistens03 wrote: »
    I saw a discussion over at Audiokarma about the Monitor 7 series 2 that is an 8 ohm speaker which sparked my interest. How good are they compared to my original peerless ones is what I am trying to find out.

    Peerless tweeters are better, the later tweeters (sl1000, sl2000, sl2500, sl3000, etc.) all had a spike in the treble between around 12-13 kilohertz I believe. Polk actually made the new RD0 line of tweeters as drop in replacements for the sl tweeters mentioned above. Customer service at its finest
    Partially correct. The SL1000, SL2000 had the resonance spike. The SL3000 Tri-Laminate did not, nor did it's more cost-effective sibling the SL2500. The RD0194-1 is a direct, drop-in replacement for the SL2000, however some creative modifications must be made when replacing the SL1000. The RD0198-1 is a drop-in for the SL2500 and SL3000.
    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
    Cables: Speaker: Furez 10/2 with GLS Locking Banana Plugs
    Interconnect: Furez 10/2 with SpeakONs
    ICs: Custom Furez by Douglas Connections
    Den:
    Bose 901 Series II Continentals Restored, Re-Built Equalizer with Elna Silmic IIs, Sonicaps, and Silver Mica Caps
    Carver CT-3 Pre, Carver C-500

    dhsspeakerservice.com/
    Now Carrying Gimpod's Custom SDA Circuit Boards

    "And keep her under 70, would you, huh? Betty likes a slow ride"
  • mlistens03mlistens03 Posts: 1,021
    mlistens03 wrote: »
    I saw a discussion over at Audiokarma about the Monitor 7 series 2 that is an 8 ohm speaker which sparked my interest. How good are they compared to my original peerless ones is what I am trying to find out.

    Peerless tweeters are better, the later tweeters (sl1000, sl2000, sl2500, sl3000, etc.) all had a spike in the treble between around 12-13 kilohertz I believe. Polk actually made the new RD0 line of tweeters as drop in replacements for the sl tweeters mentioned above. Customer service at its finest
    Partially correct. The SL1000, SL2000 had the resonance spike. The SL3000 Tri-Laminate did not, nor did it's more cost-effective sibling the SL2500. The RD0194-1 is a direct, drop-in replacement for the SL2000, however some creative modifications must be made when replacing the SL1000. The RD0198-1 is a drop-in for the SL2500 and SL3000.

    Wait, so what was wrong with the 2500/3000? You have me officially intrigued .
    2 channel
    Speakers: Mission 770 Freedoms
    Integrated amp: Technics SU-v75 and matching tuner
    CDP: Technics SL-PC20
    Cables: Monoprice, Monster, Acoustic Research, and a few generic ones
    TT: Technics SL-3200, direct drive
    Cartridge: Shure M97xE

    Pc gaming setup
    Receiver/amp: Yamaha RX-V665
    Computer: Lenovo g50 (soon to be upgraded to a Dell Precision 690 which is far from stock!!)
    Interconnects: Amazon basics HDMI, Acoustic Research HDMI, Monoprice speaker cables
    Speakers: Boston Acoustics CR75s

    Random equipment on standby:
    Onkyo TX-v940, JBL woofers and tweeters, single Klipsch KG .5, Yamaha guitar amplifier, Peavey Rage 158 guitar amplifier, Kicker comp 12” subwoofer, single Bose 802 series II, a whole bunch of 1”-3” full range drivers, Infinity Crescendo 3007s (on sale), Polk LSi25s
    txcoastal1 wrote: »

    You don't tell her you read the manual, and you tell her you know what the problem is, and you fixed it, because that what men do, fix things
    sure it has a flat response, and sure it has a lot of detail, and yes, it has good and clear lows. But is it enjoyable to listen to? Does it make you grin ear to ear? That’s what really matters.
    Seen somewhere on AudioKarma (I think)
  • pitdogg2pitdogg2 Posts: 9,837
    edited May 25
    mlistens03 wrote: »
    mlistens03 wrote: »
    I saw a discussion over at Audiokarma about the Monitor 7 series 2 that is an 8 ohm speaker which sparked my interest. How good are they compared to my original peerless ones is what I am trying to find out.

    Peerless tweeters are better, the later tweeters (sl1000, sl2000, sl2500, sl3000, etc.) all had a spike in the treble between around 12-13 kilohertz I believe. Polk actually made the new RD0 line of tweeters as drop in replacements for the sl tweeters mentioned above. Customer service at its finest
    Partially correct. The SL1000, SL2000 had the resonance spike. The SL3000 Tri-Laminate did not, nor did it's more cost-effective sibling the SL2500. The RD0194-1 is a direct, drop-in replacement for the SL2000, however some creative modifications must be made when replacing the SL1000. The RD0198-1 is a drop-in for the SL2500 and SL3000.

    Wait, so what was wrong with the 2500/3000? You have me officially intrigued .

    RDO 198 is a better smoother tweeter. The 2500/3000 can still be very harsh at some frequencies. The metallized vapor deposited domes are still polyamide underneath AFAIK.
    198 is more of a silk dome type of tweeter.
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