Rabbit
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Post by Rabbit on Apr 12, 2015 10:39:36 GMT
I still have the Cyrus 2 + PSX stored somewhere in the attic along with some Mission 763i speakers. Wonder if it'll work again or it'll blow up after unused so long. Great set up. I wonder if the caps have dried? It's the speaker matching that's crucial IMO for a good sound from the Cyrus 2. It can be edgy. Mine all went years ago. I don't think it had a headphone socket either which I found a nuisance. Had to go out from Tape out into a separate amp and control volume on the from with a 'record out' knob if I remember. There was something odd about headphones. I went from 414s to 580's and replaced the 580's three times due to wire connection going bad. |
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Post by ronzo56 on Apr 12, 2015 10:45:42 GMT
That's a terrible waste of others hard work. |
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Rabbit
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Post by Rabbit on Apr 12, 2015 10:50:08 GMT
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Deleted
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Post by Deleted on Apr 12, 2015 11:52:26 GMT
Yes, it was bright! I also had some Tannoys, but can't remember which one. Were they the ones with a tweeter in the middle of the bass driver? I also had some big Celestions which were nice. Those Tannoy's were branded as Q's, if I remember correctly. Q10, Q20, Q30 and so on. The tweeter was essentially horn-loaded, at least that was the idea. They were great with instrumental music but prone to honking on male vocals. They were very good at giving a broad soundstage though with far less need for the listener to sit dead-centre. Too rich for me though. The E11's were a more traditional 2-way design. Then they brought out the E11 LE which essentially switched the driver positions around so that the tweeter was at the bottom. I think the rationale there was to reduce standing waves, the enemy of any hi-fi in a commonly sized room. Eventually Tannoy gave up on that too & switched to those weird (ugly) hexagonal shaped cabinets. They sounded pretty good but looked ridiculous. That was another (failed) attempt to control standing waves. Pointless really, all anyone had to do was hang a few framed pictures to reduce the effect, maybe throw in a few extra cushions here & there. Gordon. |
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Deleted
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Post by Deleted on Apr 12, 2015 11:57:14 GMT
I still have the Cyrus 2 + PSX stored somewhere in the attic along with some Mission 763i speakers. Wonder if it'll work again or it'll blow up after unused so long. Great set up. I wonder if the caps have dried? It's the speaker matching that's crucial IMO for a good sound from the Cyrus 2. It can be edgy. Mine all went years ago. I don't think it had a headphone socket either which I found a nuisance. Had to go out from Tape out into a separate amp and control volume on the from with a 'record out' knob if I remember. There was something odd about headphones. I went from 414s to 580's and replaced the 580's three times due to wire connection going bad. Mission did eventually offer a headphone output on the MkIII (I think) but it was the 'new' 3.5mm output that was only really supported by Sennheiser back then. The madness of form over function. |
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Deleted
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Post by Deleted on Apr 12, 2015 12:00:33 GMT
Wow, that JVC's a beast! 120W per channel and weighing in at 21KG! I still have a fondness for Japanese hi-fi from that era. I'll maybe try to pick something up one day. |
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Javier
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Post by Javier on Apr 12, 2015 12:09:00 GMT
Great set up. I wonder if the caps have dried? It's the speaker matching that's crucial IMO for a good sound from the Cyrus 2. It can be edgy. Mine all went years ago. I don't think it had a headphone socket either which I found a nuisance. Had to go out from Tape out into a separate amp and control volume on the from with a 'record out' knob if I remember. There was something odd about headphones. I went from 414s to 580's and replaced the 580's three times due to wire connection going bad. That is what I wonder too, the Cyrus 2 and PSX used some weird huge caps with 4 contacts that I don't think would be easy to replace in case the have dried up or lost their spec. The 763i were low endish in the Mission range, 2 way with little real bass but at lest had a smooth non ear piercing treble. I used to have the X-Cans connected to the tape out and used the K501 AKGs but that was many years ago when my only source was a Rotel 971 CD player (which I still have), now with the computer it'll be a bit more complicated to set it up. |
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Rabbit
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Post by Rabbit on Apr 12, 2015 12:51:50 GMT
The PSX was supposed to smooth out the power supply, so imitating a battery connection I think.
Of course, I forgot, you could change the caps Javier. There must be some kind of equivalent. I liked the Cyrus 2.
You've reminded me ... I also had a Rotel amp and some other one called an A1? It might have been a Cambridge Audio.
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Deleted
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Post by Deleted on Apr 12, 2015 13:32:28 GMT
The Cambridge Audio A1 was a great wee amp. Warm sounding but gutsy. Arcam copied it a lot when they built the first Alpha.
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Javier
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Post by Javier on Apr 12, 2015 15:28:10 GMT
Mine are also from the early or mid 80s and got plenty use for many years untill my oldest started walking. The tweeters in speakers, for some reason, are extremely powerful magnets for child fingers who feel compelled to push them in. That is why I had to pack them away. Now I'm so used to HPs I can hardly be botherd to get the stuff back from the attic, besides there aee always exams or homework going on and it'll be very diffocult to listen to speakers above whisper levels. Maybe in 10 years or so...
Sent from my GT-I9100 using proboards
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Post by ronzo56 on Apr 13, 2015 1:10:00 GMT
Are we looking at a section for speaker based rigs too? Too much? Or not in the spirit of the forum? Or too much work getting into the attic?   |
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Deleted
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Post by Deleted on Apr 13, 2015 5:44:32 GMT
Are we looking at a section for speaker based rigs too? Too much? Or not in the spirit of the forum? Or too much work getting into the attic? Sounds good to me  |
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z3d
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Post by z3d on Apr 15, 2015 20:46:27 GMT
I don't know if I can ask but would you mind to share a bit about the technical stuff behind this project (kameleon/sennator) ? Why op-amps are needed? I seriously though it was a full passive correction filter like the ones (complicated ones) used for home (car) speakers. Did you tried also to use full passive corrections before getting the final release of kameleon that you are currently sharing with us? opamps are needed because the kameleon and Sennator are amplifiers. Also as soon as signals need to be boosted capacitors and op-amps are needed. A +10 dB boost in the sublows for instance would passively only be possible using very large value inductors and would reduce the mids by 10dB in level. Passive correction filters in speakers can only remove peaks or create high-, band- or lows-pass filters and not fill-in dips. The Kameleon can both remove peaks and/or fill in dips. Ok Frans, now I got it thank you for the explanation |
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z3d
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Post by z3d on Apr 15, 2015 20:47:16 GMT
+1dB in the 50-200Hz range and some little -0,3/-0,5dB here and here in 1-2kHz range and again some little +0,3/+0,5dB in the 8-20Khz frequency range going from 0Ω to 120Ω output impedance: not big differences for sure! That was with HD650 load right? What about low impedance (32-64Ω) or ultra high impedance (500-600Ω) cans? I expect the former to be more sensitive to the output impedance load than HD600/650 or higher impedance cans. Am I right? Yes, HD650 with new pads fitted, that's why it looks different from the other plots. The exact same headphone and amps, just different pads. It depends on the impedance plot of the headphone. Some headphones are almost like a DC resistance and others swing very high in impedance. The Superlux HD562 for instance is just like the T50RP flat as a resistor and thus won't sound tonally different (just badly attenuated which could give the impression of being less 'edgy') But with amps like the Ember for instance a higher output R can still change the sound because the amp needs to provide a higher gain/voltage and thus has more harmonic contents changing the sound. Headphones like the HD558 for instance will sound very boomy with many dB's lift in the bass where others differ less or totally not. Impedance plots from Tyll's pdf's can give a clue. The lower the impedance the bigger the potential differences in sound. Here is more in depth infoSpeaking about HD650 coupled with Ember (or Ember+filter, I don't know if you got already some prototypes of the combo), do you have some FR plots about Ember with different tubes plugged in with matched volume to compare? It is possible to spot out all the sonic differences between tubes from FR analysis or different measurements are required (decay, phase shifts, etc) in order to have an idea about the sound of a tube when plugged in Ember? Going back to Kameleon and SeNnator, I can send you my HD600 (new driver and new pads) for taking measurements and improve the filter design, are you interested in this proposal? |
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Rabbit
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Post by Rabbit on Apr 19, 2015 9:46:08 GMT
I'm not sure that tube differences are that significant to show massive differences on fr graphs.
In spite of many loving to roll tubes, I have to admit that I find any differences quite small actually. Maybe sound diffrences are more to do with the number of harmonics rather than altering the FR?
Btw .... I saw on HF that new Senns have a hologram on one driver. I checked on my new ones and he is correct. There is indeed a shiny square hologram on the right hand driver. Maybe to help stop fakes? Mind you, dead easy to put a square shiny piece of paper on the driver in fakes as well!!
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