#1
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8 ohm amp and sophias
what would you hear sonically that would be wrong if the 4 ohm sophia was mated with a cj amp set at 8 ohms instead of 4 ohms?
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#2
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Does the CJ amp have both 8 and 4 Ohm taps? If so, then the best person to decide the sonic differences is you. Give it a shot and let us know what you hear.
It depends on the amp. For example, many say that Audio Research amps sound better on the 8 Ohm tap, versus the 4 Ohm. With my Lamms, I preferred the 4 Ohm for the better grip on the bottom end.
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SF Stradivari, Aric Audio Motherlode XL preamp and Super KT Parallel amps; Pass XP 27, Raven One TT, Graham Phantom II arm, Lyra Etna Lamda, Airtight PC1, Bryston 3.14 DAC, Transparent Reference & Wireworld, dedicated treated room 17 X 34 X 9 |
#3
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Quote:
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#4
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Ray,
The LP140s come from the factory set up for lower impedance as most modern speakers have those lovely dips. Can't imagine anything good coming from a change to a higher value than needed. Certainly they don't change the transformer, probably just add caps in parallel which would degrade the sound and damping factor. Bob
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Wilson Yvette speakers, Conrad-Johnson ART88 pre, TEA1bc phono, and ART27A Amplifier, Marantz digital player, Rega Planar 10 turntable / Apheta 3 cartridge,Wireworld Gold and Platinum Eclipse IC and speaker, I AQ Hurricane, Tornado power cables, Shunyata Denali 2 conditioner, dCS Bartok DAC/Streamer |
#5
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Quote:
Do you think all the sonic difference would be in the bass only? |
#6
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Ray,
Well it is said, if you haven't heard it you don't have an opinion. And I haven't heard the amps set up for higher impedance so... but if they put in additional parts the signal must deal with it can't help. Why don't you drop c-j a note with your question. They've heard it, have good ears and can give you a quantified answer. Do you have them yet? Bob
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Wilson Yvette speakers, Conrad-Johnson ART88 pre, TEA1bc phono, and ART27A Amplifier, Marantz digital player, Rega Planar 10 turntable / Apheta 3 cartridge,Wireworld Gold and Platinum Eclipse IC and speaker, I AQ Hurricane, Tornado power cables, Shunyata Denali 2 conditioner, dCS Bartok DAC/Streamer |
#7
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When i called cj with a question it was a pain for them as they have not replaced Ed yet. He will be missed.
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#8
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This might only apply to Audio Research amps, but I e-mailed Wilson in regards to which tap to use on the REF75 amp when hooking up to the Sophia 3s.
Here's their reply, "We recommend you try both taps on the Ref 75. We have generally settled on the 8 ohm tap for Audio Research vacuum tube amplifiers in the past, but you will want to audition and choose the tap of your preference." |
#9
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Peter McGrath advised me to try the 8 ohm taps with Sasha and I prefer them to the 4 ohm taps.
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Wilson Alexia V, ARC Ref 160M MkII,Ref 40,Ref Phono2SE, Shunyata Triton3, Typhon, Sigma PCs, ICs & SCs, Spectral SDR4000SV (w MIT IC), Belcanto PL1, Oppo 205, Marantz 2270 (tuner only):AudioDesk and VPI record cleaners, Furutech Demag & Destat; Stillpoint Apertures, TechDas AF 3S Premium with SAT CF9 and Kuzma 4pt 9" arms, Lyra Atlas Lambda SL, Dynavector XV1-t stereo and XV1-s mono carts, Miyajima mono, Shure V15VxMR, |
#10
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IMHO this is not a big deal sonically. My CJ LP70S was factory set at 8ohms. When I got the 4ohm Rockport Aviors I asked CJ about wiring instructions etc. Lew Johnson was extremely helpful, a real gentleman and a gem in this industry. CJ sent my ex dealer the wiring diagram which involved 2 Vishay resistors etc. As these are not available locally no changes were made and I have been running the 8ohm amp into the 4ohm speakers to the delight of my audio friends.
Pradeep
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Pradeep Rockport Aviors, Conrad Johnson GAT, Wavac HE 833 V2, Nagra VPS, Lyra Atlas,Miyajima Premium BE Mono and Ortofon Silver Meister SPU, Durrand Talea2 tonearm and Ortofon 309D, TW Acustics AC with Black Night motor + PSU and Garrard 401.Musical Fidelity kw 25 dac + transport.REL G1 x2. Shunyata Triton.Mytek 192 DSD DAC. All cables Cardas Golden Reference. |
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