#21
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Since I don’t have the 402 it doesn’t matter any longer, but last year I did call REL....their response was that they had no idea so just use the line level inputs.
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Library: Speakers: Avalon Acoustics Isis, Subwoofers: (2) REL Acoustics 212SE Amplification: D’agostino Momentum preamplifier, D’agostino S250 stereo amplifier Digital: dCS Rossini CD/SACD transport, dCS Rossini DAC/streamer/master clock. Analog: Brinkmann Taurus table, Lyra Etna Lambda, Audio Research Ref. Phono 3 |
#22
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Quote:
In their dozens of detailed online support pages: https://rel.net/how-to-connect-my-rel/ they do not have a way to connect a fully balanced and floating amplifier to their grounded high level input. So even though they clearly indicate the low level connection is inferior, that's the only choice that works with the likes of the McIntosh MC 402 and MC 602. Other McIntosh amplifiers may be different and may work - I just don't have personal experience with them. Tom
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Main System: Amati Futura Mains Amati Homage VOX Center, Proac Response 1sc Rears, Three MC2301's for L,C,R MC 602 for the rears C 1100, MX 151, MCD 1100, MR 80 Nottingham Dais with Wave Mechanic Sumiko Palo Santos Presentation SurfacePro 3, RPi 4, ROON, WW Starlight Platinum USB, Schiit Yggdrasil, Benchmark DAC3 HGC MX 151, OppO BDP-95, JVC RS-500 DILA projector, 106" diagonal Stewart Luxus Screenwall Deluxe with Studiotek 130 G3 material. Lake House: Ohm F, MC 275V, C2300, MR 77, Rega P3 OnDeck: McIntosh MAC 4300v |
#23
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Quote:
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System: ML:5206,5302 Serafino's Nordost Lumin U1 RM15 |
#24
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Tried that - didn’t work as the speaker outputs on the 402 and 602 float wrt chassis and signal ground.
To their credit REL does describe the method you suggest in their extensive online hookup info. Also in REL’s defense their subs will work with most amps out there. And the low level connection always works.
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Main System: Amati Futura Mains Amati Homage VOX Center, Proac Response 1sc Rears, Three MC2301's for L,C,R MC 602 for the rears C 1100, MX 151, MCD 1100, MR 80 Nottingham Dais with Wave Mechanic Sumiko Palo Santos Presentation SurfacePro 3, RPi 4, ROON, WW Starlight Platinum USB, Schiit Yggdrasil, Benchmark DAC3 HGC MX 151, OppO BDP-95, JVC RS-500 DILA projector, 106" diagonal Stewart Luxus Screenwall Deluxe with Studiotek 130 G3 material. Lake House: Ohm F, MC 275V, C2300, MR 77, Rega P3 OnDeck: McIntosh MAC 4300v Last edited by W9TR; 11-27-2018 at 01:48 PM. |
#25
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Quote:
- Buck
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Library: Speakers: Avalon Acoustics Isis, Subwoofers: (2) REL Acoustics 212SE Amplification: D’agostino Momentum preamplifier, D’agostino S250 stereo amplifier Digital: dCS Rossini CD/SACD transport, dCS Rossini DAC/streamer/master clock. Analog: Brinkmann Taurus table, Lyra Etna Lambda, Audio Research Ref. Phono 3 |
#26
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Rel
Quote:
So, in this case there is really is nowhere to connect the black wire to get a reference ground voltage - there is no such path.
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Main - Roon on Synology/Sonos Port/SoTM Neo endpoints; Chord Qutest, Bryston BP-17 cubed with phono option; EAT C-sharp with Ortofon Bronze MM, Bryston cubed Amplifier; Revel F126Be on custom Atocha stands; interconnects by WireWorld, furniture by Atocha Design 'Phones Audeze LCD-3, Bryston BHA-1; Office: Sonos/Roon; OPPO HA-1, Naim NAP100 and PSB Mini-C. Media Room:, Samsung QLED QN90 series, Sonos, OPPO 205, ATI N-core driving KEF LS-50's with REL subs; furniture by Glassisimo; Kids - U-turn for vinyl, Sonos Play5; Summer Shack - Sonos, vintage Pioneer, Dynaudio Special 40's. Last edited by clpetersen; 11-27-2018 at 02:58 PM. |
#27
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Quote:
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System: ML:5206,5302 Serafino's Nordost Lumin U1 RM15 |
#28
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IF anyone is still reading this, i just received this email from Chuck at McIntosh today - seems to confirm everything i just read above:
Hi David, Yes, the MC402 is Quad Balanced and can not be run with the negatives tied together, do not use the REL speaker level connector. Connect low level from your preamp to the REL RCA inputs.
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McIntosh MC402, C2500, MC7061, MX121 and MVP861. VPI Prime Scout TT. Sonus Faber Sonetto Vs, Sonus Faber Center I, Two REL T/9i subs. Wharfedale 11.2 surrounds. Lake house: Beomaster 5500, Beogram 5500 CD, Beocord 5500 and U-Turn Orbit Plus TT. Wharfedale 225 speakers |
#29
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Just going to jump in here. Does the mc462 have the same issue? Also please confirm if the rel red and yellow wires can connect to open binding post on the amp that are not used by the speakers? Would there be any change in how the sub interacts doing that, I.e., various ohms?
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#30
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For REL setup experts
I owned a pair of REL B2 subs and connected the both of them to my MC402 for years and then a pair of MC501, and a pair of MC2102. It was only very soon before I sold the subs did I find out here on AA that I had them hooked up incorrectly. I thought my only mistake was not knowing that a differential amp is synonymous with balanced amp, or in the case of MC402, quad balanced. Turns out even when I changed the connections to the differential config, I was still wrong since the grounding scheme of the 402 isn’t sympatico. I guess i was lucky nothing happened to my gear as a result. At the time, I did not experience the low volumes that Buck described with the caveat that those systems were installed in a really small bedroom that was my dedicated listening room. BUT I do remember being floored at the difference when I bought a single JL f110v2. Massive improvement versus the REL. Now I know why!! Live and learn.
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Preamp: McIntosh C1100T/C1100C, McIntosh MX180 Amp: McIntosh MC611 (2), MC601 (3), MI254 Digital: McIntosh D1100, McIntosh MCT450, Meridian 808v6, Aurender N20, Aurender ACS10, Oppo 203 Analog: McIntosh MT10, Hana Umami Red Phono preamp: Simaudio Moon 610LP, 820S Signal cables: WW Gold Eclipse 7 speaker cables; Shunyata Sigma v2 XLR (2); Sigma v1 XLR (2), Transparent Ref XL (MM2) XLR; WW Silver Eclipse 7 (4) Digital cables: Shunyata Omega USB, Omega Ethernet, Sigma Ethernet; WW Platinum 7 Coax, AES/EBU Switch: Innuos PhoenixNet Power: Audioquest Niagara 7000, Audioquest 5000, Audioquest Dragon, Hurricane PC, Shunyata Alpha HC, AQ NRG Edison outlets, (8) 20 amp dedicated lines, 125 amp subpanel Speakers: Wilson Sasha DAW, Dynaudio Contour 30, Dynaudio Contour 25C Subs: REL s/812 (6), REL s/510 (3) Accessories: HRS M3X2 shelf (MT10), Stillpoints Ultra II v2 w/ bases (21), Ultra SS (12), Mini (12), LPi v1 Sound treaments: Artnovion |
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