Well Cambridge Audio have been very good and I have a new replacement amp without even checking the one I sent back,it's a really good amp, however, the issue is still present. Of course it could be a second 'faulty' amp but I now doubt the first was faulty.could it be a compatibility issue with my digital pre?
novafidelity x40 music server/pre/dac, Arcam A39, roksan k3 power amp,Monitor Audio Monitor 50, Dali spektor 1, van damme interconnects and speaker cable, roskan k3 CD player
Location: Middlesex, UK
Posts: 4,482
I'm Alex.
Sorry to hear that you still have the same problem, what speakers are you using? Had a quick look back and didn't see.
Spendorman
Almost certainly there is no fault then. It seems they do that...
Arkless Electronics-Engineered to be better. Tel. 01670 530674 (after 1pm)
Modded Thorens TD150, Audio Technica AT-1005 MkII, Technics EPC-300MC, Arkless Hybrid MC phono stage, Arkless passive pre, Arkless 50WPC Class A SS power amp, (or) Arkless modded Leak Stereo 20, Modded Kef Reference 105/3's
ReVox PR99, Studer B62, Ferrograph Series 7, Tandberg TCD440, Hitachi FT-5500MkI, also FT-5500MkII
Digital: Yamaha CDR-HD1500 (Digital Swiss army knife-CD recorder, player, hard drive, DAC and ADC in one), PC files via 24/96 sound card and SPDIF, modded Philips CD850, modded Philips CD104, modded DPA Little Bit DAC. Sennheiser HD580 cans with Arkless Headphone amp.
Cables- free interconnects that come with CD players, mains leads from B&Q, dead kettles etc, extension leads from Tesco
novafidelity x40 music server/pre/dac, Arcam A39, roksan k3 power amp,Monitor Audio Monitor 50, Dali spektor 1, van damme interconnects and speaker cable, roskan k3 CD player
Last edited by Pieoftheday; 20-05-2017 at 17:38.
novafidelity x40 music server/pre/dac, Arcam A39, roksan k3 power amp,Monitor Audio Monitor 50, Dali spektor 1, van damme interconnects and speaker cable, roskan k3 CD player
Location: Middlesex, UK
Posts: 4,482
I'm Alex.
I see that the Wharfedale's nominal impedance is 6 Ohms, this is a bit lower than a normal nominal 8 Ohm load, perhaps this is triggering the protection. Not so good if this is so.
Spendorman
I mean it would appear to be "just one of those things".... If two samples do exactly the same thing and if it sounds great then I wouldn't worry about it
The power amp is sounding good ("petrat" of this parish has heard it at my place, but not commented as far as I know... maybe he didn't like it!? gawd knows.. probably as both the entire system and the room acoustics are unfamiliar to him he's understandably chosen to say nowt) and has had quite a few changes to it so far.
I'm currently working on 3 different avenues of investigation (yes 3 amps) which are completely different from each other and I'll report in my trade area when I feel I've made a major breakthrough... or not! The major issue is the old, old story.... although we can measure all sorts of parameters, beyond the point where the measurements confirm that an amp is at least fairly competent, they say pretty much nothing about how it will sound. This means that in spite of all the computer simulation and doing measurements on a lashed up single channel of the amp, ultimately one has to build an actual working stereo prototype and audition it! All very time consuming and also most frustrating when , after maybe 20 hours of work to build something solid enough to properly audition it... it sounds not much different to the last amp... or a bit worse... or maybe slightly better but you've listened to so many changes in a short time you no longer trust your own ears to be right and need a break from it.... All good fun
Arkless Electronics-Engineered to be better. Tel. 01670 530674 (after 1pm)
Modded Thorens TD150, Audio Technica AT-1005 MkII, Technics EPC-300MC, Arkless Hybrid MC phono stage, Arkless passive pre, Arkless 50WPC Class A SS power amp, (or) Arkless modded Leak Stereo 20, Modded Kef Reference 105/3's
ReVox PR99, Studer B62, Ferrograph Series 7, Tandberg TCD440, Hitachi FT-5500MkI, also FT-5500MkII
Digital: Yamaha CDR-HD1500 (Digital Swiss army knife-CD recorder, player, hard drive, DAC and ADC in one), PC files via 24/96 sound card and SPDIF, modded Philips CD850, modded Philips CD104, modded DPA Little Bit DAC. Sennheiser HD580 cans with Arkless Headphone amp.
Cables- free interconnects that come with CD players, mains leads from B&Q, dead kettles etc, extension leads from Tesco