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Thread: Biwiring jumpers
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January 8, 2014, 06:53 AM #1
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Biwiring jumpers
I recently had a listen to two B&W based systems.
The first one was a lovely system on paper, with full Accuphase electronics and a B&W 805D. I found the system quite harsh and bright, but the system took a dramatic change when we swapped the loudspeaker cable from the upper terminals (the tweeters) to the lower terminals. He was not biwiring the speakers, and was using some aftermarket jumper cables to bridge the terminals.
Both myself and the owner were very surprised that such a simple change could result in so much difference.
A few weeks later, another friend invited me over to have a listen to his B&W804D, and wanted some input on how to make the sound warmer and more liquid. I noticed that he had wired the cables the same way, and we got similar results when we moved the cables to the woofer terminals.
It may not work for everyone, but perhaps B&W owners that are wiring their speakers this way may want to give this a shot and report back ?
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January 8, 2014, 08:48 AM #2
Re: Biwiring jumpers
You should not have noticed a change like that.
There must have been a bad connection the first time.Listening Room: McIntosh C46, MEN220, MCD500, MR78-Modafferi modified, MPI4, MC602 (2), Pass Labs XVR1 (three-way), tri-amplified Infinity IRS Series V, TailTwister T2X rotator, AtlasSound FMA Rack, dedicated electrical sub-panel, NO TV!
Living Room: McIntosh C28, MC2300, Revox B226, Tascam CD355, Thorens TD125 MKII w/vacuum platter, Rabco SL-8E, Grace F9-E, McIntosh ML-2C (2) & ML-1C (4) stacked, MQ-107, SAE 2800, Nakamichi Dragon, Tandberg 64X, JL Audio f113 (2), NO TV!
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January 8, 2014, 09:09 AM #3
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Biwiring jumpers
In theory, I fully agree. I did check the connections and they were fine before we swapped them.
Eric's System
Sources : Mac Mini with Pure Music 2.0, Cary CD 500, Calyx Femto DAC, Pro-ject 2-Xperience Acryl with Sumiko Blackbird HOMC. Amplification : Conrad Johnson GAT, Conrad Johnson ART Monoblocks, Graham Slee Reflex M Phono Stage. Speakers : Focal Diablo Utopia, JL Audio E112 sub. Cabling : Cardas, AET, Acoustic Revive, Acrolink, Wireworld.
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January 8, 2014, 10:15 AM #4
Re: Biwiring jumpers
I'm not surprised at all on the results. When you using a single wire on bi-wire post it always sounds fuller on woofer terminals. You will find the different sounds again once you put the - on the bottom and + to the top terminal.
I have the PMC IB2i with tri -wiring terminals and I played with them a lot ....What a different sounds I get on each terminal connections...wow.
It's all fun to play with
P.S: Did you change the factory jumpers to Pure copper or Pure silver jumpers ? It will surprise you again with the sound change.Paul
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January 8, 2014, 10:34 AM #5
Re: Biwiring jumpers
Vine, Vide, Velcro - I came, I saw, I stuck around.
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January 8, 2014, 10:35 AM #6
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Re: Biwiring jumpers
BlueMcIntosh,
The factory supplied jumpers are not the usual brass links but copper wires with spades on one end, and bananas on the other. The 805D owner had 2 different sets of after market jumpers made to order - there was a difference on each, but not as dramatic as moving from the upper terminals to lower terminals.
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January 8, 2014, 01:31 PM #7
Re: Biwiring jumpers
ARC4LIFECaribbean Distributor of
ARC / Sonus Faber / Wadia / Wilson / VAC / Soulution / Nordost / Shunyata / Stillpoints
Kuzma / Focal / Resonessence Labs / ARIA / KRELL / Pro-Ject...
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January 8, 2014, 07:16 PM #8
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- Nov 2013
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Re: Biwiring jumpers
Hi, Try the Red Speaker cable Hot + to the Bottom Woofer input--jumper to the +Tweeter input
The Black Speaker cable - to the Top- Tweeter input--jumper to the Bottom - Woofer input
B
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November 29, 2014, 02:32 AM #9
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Re: Biwiring jumpers
interesting, i will try this on my 800D and see what i think before my bi-wires arrive
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November 29, 2014, 06:04 AM #10
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Re: Biwiring jumpers
Interesting...a few weeks ago, i pulled out an old pair of TA Ref jumpers from when i owned SF Guarneris. I used them in place of the solid copper buss for my Wilson X1s...smoother, but lost detail and realism thru dynamic attack. i then used the jumpers IN ADDITION to the copper buss...wow! best of both worlds...and extremely dextrous bass with greater clarity and ability to delineate syncopated deep house bath rhythm. But the treble was a bit rolled off...
By coincidence, my local Focal Dealer had just ordered TA Ref XL jumpers (5 sets) to replace all the stock jumpers that come with the Grande Utopia EM...they now demonstrate the speaker with them. I borrowed the XL jumper and found the treble more open.
Ultimately, i ordered the TA Ref MM (there is no Opus since there is no network box on jumper and the cable part is the same)...and am extremely happy while it settles into the system.Speaker: Wilson Audio XLF + Velodyne DD18+
Source: Zanden 4-Box Digital
Amp: Robert Koda K15EX + Gryphon Mephisto Stereo
__________________________________
Cable: TA Opus (Gen5) + Sablon Audio Prince (Orange)
Power: 7 Dedicated Lines Furutech + Torus AVR 16 + Burmester 948 + NordostQX4
Isolation: Under: SRA+HRS+Stillpoints+Auralex Top: HRS+Artesania+Entreq+EAT+90kg Mass
Ground/Shield: Tripoint Troy Sig & Thor + Entreq Atlantis / Receivus +Everest+Wrap
Room/Tube: Stillpoints Apertures / Amperex + Mullard
Headphone Setup: Sennheiser 650 + Arcam rHead + Apogee Groove
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AudioShark forum is a leading forum site for High End Audio Discussion, Stereo System Discussion, Home Theater System Discussion, Best Home Stereo System Discussion, Home Theater Installation Discussion etc.
The AudioShark forum was created for sharing the passion of high-end Audio. We have Audiophiles from all over the world participating and sharing their knowledge. From novice to experts, you will find a friendly environment for discussing about High End Audio, Stereo System, Home Theater System, Home Stereo System, Home Theater Installation, Amplifiers, Speakers, Subwoofers, Integrated System, Acoustic treatments & Digital Room Corrections and many more.
At AudioShark, we also have incorporated an exciting Marketplace where members can peruse terrific buys on used gear, as well as meet dealers and discuss the purchase of new gear.
We are as crazy about this hobby as you are! So come on in and join us! Audioshark.org the Friendliest Audio Forum!
Industry Participation Disclosure : The owner and administrator of Audioshark is the owner of Suncoast Audio LLC in Sarasota Florida. Suncoast Audio has a full brick and mortar presence in Sarasota with several great show rooms with many world class brands. More information can be found at http://www.suncoastaudio.com
Audioshark is a community of like minded individuals. Audioshark welcomes participation from all manufacturers and owners of all brands and products. It is our belief that online forums provide a community of like minded audiophiles and music lovers to encourage the growth of this wonderful hobby.
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I or anyone interested should see if FEDEX offers a domestic "LAST MINUTE RATE" for shipping heavy items within CONUS. Have no clue at this point - but when I have some time, I'll check. ...
Shipping Overseas 498 pounds w/3...