MIT Magnum question
mikeyb128
Posts: 2,885
I received my marantz 7702, have been tinkering over the past few days. I have some new magnum m3's for the front sound stage. Performed the xt32 calibrations, and the front stage is lifeless. Rear channels are lively as can be with my audioquest Columbias. I have the Interconnects impedance matched to my sunfire amp. No dynamic eq or volume enabled. I have tried everything. The front three are shite. So I decided to switch the impedance switch to medium instead of low. After the switch the front three came alive. It blew me the $&@! Away. Has anyone else experience this? I understand cable break in is required, but the amount of reviews for these cables and price I was a little bummed.
2 channel:
Bryston 4B3, Bryston BDA3, Cary SLP05, Shanling CDT1000SE with parts conneXion level 2 mods, Nottingham analogue ace space 294, soundsmith Carmen MKii, Zu DL103 MKii, Ortofon MC 20 MKii, Dynavector XX2 MKii, Rogue Audio Ares, Core power technologies balanced power conditioner, Akiko Corelli power conditioner with Akiko Audio HQ power cable, Nordost heimdall 2, Frey 2, interconnects, speaker and power cables, Focal Electra 1028 BE 2, Auralic Aries Femto, Black diamond racing cones, ingress audio level 1 roller blocks, JL Audio E110 with Auralic subdude, Primacoustics room treatments.
Theater:
Focal Aria 926,905,CC900, SVS PB ultra x2. Pioneer Elite SC85, Oppo BDP93, Panamax M5400PM, Minix neox6, Nordost Blue heaven LS power cables.
Bryston 4B3, Bryston BDA3, Cary SLP05, Shanling CDT1000SE with parts conneXion level 2 mods, Nottingham analogue ace space 294, soundsmith Carmen MKii, Zu DL103 MKii, Ortofon MC 20 MKii, Dynavector XX2 MKii, Rogue Audio Ares, Core power technologies balanced power conditioner, Akiko Corelli power conditioner with Akiko Audio HQ power cable, Nordost heimdall 2, Frey 2, interconnects, speaker and power cables, Focal Electra 1028 BE 2, Auralic Aries Femto, Black diamond racing cones, ingress audio level 1 roller blocks, JL Audio E110 with Auralic subdude, Primacoustics room treatments.
Theater:
Focal Aria 926,905,CC900, SVS PB ultra x2. Pioneer Elite SC85, Oppo BDP93, Panamax M5400PM, Minix neox6, Nordost Blue heaven LS power cables.
Comments
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Nothing unusual there. The low, medium and high settings overlap a bit, so it's best to try a different setting to see if one works better than the other as you discovered.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."
President of Club Polk -
When I purchased my BAT VK-200 here on the forum, I hooked up my MIT Shotgun S3's to it and started listening. I was disappointed with the sound I received from the amp. I then remembered that I did not adjust the impedance settings before hooking up the VK-200. My previous amp was the Pass Aleph 30 amplifier which had a much lower impedance than the VK-200. After adjusting the setting from the medium to the high hetting (above 100kH) the audio improved a lot.
The impedance settings make a drastic difference in how the tonality, clarity and detail is presented to the listener (from my experience).
The cable burn in also makes a big difference in what is presented to the listener. Particularly in the bass clarity, detail; high end clarity and detail, and the soundstage and imaging.
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."![:\](https://forum.polkaudio.com/resources/emoji/confused.png ":\")
My response is: If you need 60 seconds to respond in one sentence, you probably should't be evaluating Polk speakers.....
"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 -
"The cable burn in also makes a big difference in what is presented to the listener. Particularly in the bass clarity, detail; high end clarity and detail, and the soundstage and imaging."
isn't that the truth.
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I received my marantz 7702, have been tinkering over the past few days. I have some new magnum m3's for the front sound stage. Performed the xt32 calibrations, and the front stage is lifeless.
Did you run the auto calibrations again after changing the impedance switches? What is the specified input impedance on the amp? -
The input impedance on the sunfire is 24kohms. The low setting on the magnums is 5-50. So I found it weird that the medium setting sounds better. And I mean way better, nice crisp highs and the front sound stage blends seamlessly together, if I closed my eyes it would be like there was only one speaker. On low setting it was just boring. I have not re-run audessy after switching impedance settings, was something I tried late last night. I'm going to re-run things today.2 channel:
Bryston 4B3, Bryston BDA3, Cary SLP05, Shanling CDT1000SE with parts conneXion level 2 mods, Nottingham analogue ace space 294, soundsmith Carmen MKii, Zu DL103 MKii, Ortofon MC 20 MKii, Dynavector XX2 MKii, Rogue Audio Ares, Core power technologies balanced power conditioner, Akiko Corelli power conditioner with Akiko Audio HQ power cable, Nordost heimdall 2, Frey 2, interconnects, speaker and power cables, Focal Electra 1028 BE 2, Auralic Aries Femto, Black diamond racing cones, ingress audio level 1 roller blocks, JL Audio E110 with Auralic subdude, Primacoustics room treatments.
Theater:
Focal Aria 926,905,CC900, SVS PB ultra x2. Pioneer Elite SC85, Oppo BDP93, Panamax M5400PM, Minix neox6, Nordost Blue heaven LS power cables. -
If the ranges are the same as on my Shotgun S1 interconnects, the mid setting starts at 40. As mentioned above, it can be best to try out the different settings as I think there is some flexibility in them. I am curious if the Audessy will affect the in room frequency response though. It could be that it is making the in room response flattened, which may be more "accurate" for movie soundtracks but not necessarily the best sounding to every listener. Interested in what you find out.
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The impedance ranges on the magnum m3:
Low 5-50
Med 40-100
High 90 and up
The girl friend heads out in a few hours, then I have some peace and quiet to re-run audessy. Will report back with my findings. So far really loving the medium setting. Has livened things right up. Thanks for the quick responses.2 channel:
Bryston 4B3, Bryston BDA3, Cary SLP05, Shanling CDT1000SE with parts conneXion level 2 mods, Nottingham analogue ace space 294, soundsmith Carmen MKii, Zu DL103 MKii, Ortofon MC 20 MKii, Dynavector XX2 MKii, Rogue Audio Ares, Core power technologies balanced power conditioner, Akiko Corelli power conditioner with Akiko Audio HQ power cable, Nordost heimdall 2, Frey 2, interconnects, speaker and power cables, Focal Electra 1028 BE 2, Auralic Aries Femto, Black diamond racing cones, ingress audio level 1 roller blocks, JL Audio E110 with Auralic subdude, Primacoustics room treatments.
Theater:
Focal Aria 926,905,CC900, SVS PB ultra x2. Pioneer Elite SC85, Oppo BDP93, Panamax M5400PM, Minix neox6, Nordost Blue heaven LS power cables. -
I am curious if the Audessy will affect the in room frequency response though. It could be that it is making the in room response flattened, which may be more "accurate" for movie soundtracks but not necessarily the best sounding to every listener. Interested in what you find out.
Interested as well.
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."
President of Club Polk -
Verdict is in. Set the magnums to medium. Re-ran audessy. Did several different calibrations. Seems that is did flatten the in room response a bit. Tamed the highs a little. But overall the sound is still better, more of an airy, open sound, almost sounds louder. I have switched the magnums from low to medium, the low setting almost muffles the sound,Takes away from the quality. Overall I'm blown away by the drastic difference from the low to medium setting. I guess only REW would tell the honest truth, but I'm too lazy to pull out the computer and mic. I'm really satisfied with the sound right now. I think I still prefer how thorough mcacc is (despite no sub cal).2 channel:
Bryston 4B3, Bryston BDA3, Cary SLP05, Shanling CDT1000SE with parts conneXion level 2 mods, Nottingham analogue ace space 294, soundsmith Carmen MKii, Zu DL103 MKii, Ortofon MC 20 MKii, Dynavector XX2 MKii, Rogue Audio Ares, Core power technologies balanced power conditioner, Akiko Corelli power conditioner with Akiko Audio HQ power cable, Nordost heimdall 2, Frey 2, interconnects, speaker and power cables, Focal Electra 1028 BE 2, Auralic Aries Femto, Black diamond racing cones, ingress audio level 1 roller blocks, JL Audio E110 with Auralic subdude, Primacoustics room treatments.
Theater:
Focal Aria 926,905,CC900, SVS PB ultra x2. Pioneer Elite SC85, Oppo BDP93, Panamax M5400PM, Minix neox6, Nordost Blue heaven LS power cables. -
Thanks for the follow up. I don't use any analog interconnects in my home theater system now, but do use MIT S3 speaker cables (no impedance adjustments on those) and found the auto calibration helps a great deal in what is normally an awkwardly bright acoustic space because of the number of windows. The calibration in my case helped tame the brightness of the sound without impacting clarity, which is why I was guessing the calibration may have had some impact on your system.
Glad you found a solution!
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