Regards,
Grant .... ؠ ......Don't be such a big girl's blouse
I've said it before and I'll say it again: democracy simply-doesn't-work.... ..... ...... ...... ................... ..... ..... ..... ..... .....
FIIO K7 BT, M11 PLUS, BTR7, KA5 - OPPO BDP-103D - PANASONIC UB450 - PANASONIC 4K ULTRA HD TV - PIXEL 6 - AVANTREE LR BLUETOOTH - 2* X600 SOUNDCORE - HEADPHONES INCLUDE, FIIO, NURAPHONES', FOCAL, OPPO, BOSE, CAMBRIDGE, BOWER & WILKINS, DEVIALET, MARSHALL, SONY, MITCHELL & JOHNSTON - 2*ZBOOK'S- MERCURY BD ROM, ROON, QOBUZ, TIDAL, PLEX, CYBERLINK, JRIVER - MULTI HDD'S -
Oh my god! There's nothing wrong with the bidet is there?
“Nothing discloses real character like the use of power. It is easy for the weak to be gentle. Most people can bear adversity. But if you wish to know what a man really is, give him power. This is the supreme test. It is the glory of Lincoln that, having almost absolute power, he never abused it, except on the side of mercy".
“You see these dictators on their pedestals, surrounded by the bayonets of their soldiers and the truncheons of their police ... yet in their hearts there is unspoken fear. They are afraid of words and thoughts: words spoken abroad, thoughts stirring at home -- all the more powerful because forbidden -- terrify them. A little mouse of thought appears in the room, and even the mightiest potentates are thrown into panic.”
"You don't have free will. You have the appearance of free will.”
“There's a war out there, old friend. A world war. And it's not about who's got the most bullets. It's about who controls the information. What we see and hear, how we work, what we think... it's all about the information!”
***SMILE, BE HAPPY***
I would suggest either a 606 or a British built 909. The rumours are true: Chinese-built 909s now use locally sourced components, which are decidedly inferior (especially the capacitors).
Although a bit off topic, there is some misunderstanding of the maximum power to which the Quad 57s can be subjected. In the Quad instruction booklet, on page 10 it states: "Other amplifiers if they are properly regulated (not more than 33 peak volts with any load) are unlikely to cause damage to the loudspeaker, although they may not neccessarily provide the correct performance because of the very strict stability requirements."
Now assuming the Quad 57s have a nominal impedance of 10 Ohm, 33V peak voltage swing implies a peak power of 108W, or a mean power of 54W. This is usually rounded down to 50W, hence the voltage limiter which when fitted to the Quad 405 amplifier reduces the voltage swing to 20V rms, or 40W into 10 Ohm.
When the Quad 57 was first introduced, the amplifier requirements were somewhat more specific. In particular, Quad stated: "With a 30 Ohm resistive load, the amplifier should at no time be capable of producing more than 35 peak volts across the loudspeaker terminals." There is good reason for this restriction; the Quad 57 has an impedance of around 30 Ohm at low frequencies, which thus involve the bass panels of the speaker. The stator to stator distance is 3.2mm, and the bass panels are fed through a 270:1 step-up transformer. Thus 35 x 270 = 9450V, or a maximum field strength of 9.45kV/3.2mm = 2.95kV/mm. The breakdown field stength of air is around 30kV/cm, and it is this that sets the maximum voltage swing.
Barry
Thanks for the responses.
Good info there too Barry, very interesting.
Well I've pulled the trigger on the errr.... Proart's.
Couldn't resist after such a ringing endorsement. Hope you weren't all just pulling me leg!!
I'll also definitely look out for an early British 909 as they seem the "perfect" accompaniment to the 63's.
Power and control with a synergy born of design.
Will be trying these out on various speakers also just for fun.
System 1: - Amp - Musical Paradise MP-701 mk2 - Neurochrome 686
- Source: Audio Technica LP-5 - Custom 6V6 stage - Novafidelity X30 - Soekris 1421 (LPSU) - Custom TDA1541 C3G DAC -
- Speakers: Martin Logan Prodigy's - Subs: - REL T3's -
System 2 - Amp: Musical Paradise MP 303/Custom 300B SET - Custom 6SL7 Pre -
- Source: Pioneer N-30K - SONCOZ SGD1 -
- Speakers: Loth X BS1's - Sub: REL T3 -
The guy will be wondering what happened lol.
Regards,
Grant .... ؠ ......Don't be such a big girl's blouse
I've said it before and I'll say it again: democracy simply-doesn't-work.... ..... ...... ...... ................... ..... ..... ..... ..... .....
FIIO K7 BT, M11 PLUS, BTR7, KA5 - OPPO BDP-103D - PANASONIC UB450 - PANASONIC 4K ULTRA HD TV - PIXEL 6 - AVANTREE LR BLUETOOTH - 2* X600 SOUNDCORE - HEADPHONES INCLUDE, FIIO, NURAPHONES', FOCAL, OPPO, BOSE, CAMBRIDGE, BOWER & WILKINS, DEVIALET, MARSHALL, SONY, MITCHELL & JOHNSTON - 2*ZBOOK'S- MERCURY BD ROM, ROON, QOBUZ, TIDAL, PLEX, CYBERLINK, JRIVER - MULTI HDD'S -
Oh my god! There's nothing wrong with the bidet is there?
“Nothing discloses real character like the use of power. It is easy for the weak to be gentle. Most people can bear adversity. But if you wish to know what a man really is, give him power. This is the supreme test. It is the glory of Lincoln that, having almost absolute power, he never abused it, except on the side of mercy".
“You see these dictators on their pedestals, surrounded by the bayonets of their soldiers and the truncheons of their police ... yet in their hearts there is unspoken fear. They are afraid of words and thoughts: words spoken abroad, thoughts stirring at home -- all the more powerful because forbidden -- terrify them. A little mouse of thought appears in the room, and even the mightiest potentates are thrown into panic.”
"You don't have free will. You have the appearance of free will.”
“There's a war out there, old friend. A world war. And it's not about who's got the most bullets. It's about who controls the information. What we see and hear, how we work, what we think... it's all about the information!”
***SMILE, BE HAPPY***
They are surprising. Just wait and see.
Regards,
Grant .... ؠ ......Don't be such a big girl's blouse
I've said it before and I'll say it again: democracy simply-doesn't-work.... ..... ...... ...... ................... ..... ..... ..... ..... .....
FIIO K7 BT, M11 PLUS, BTR7, KA5 - OPPO BDP-103D - PANASONIC UB450 - PANASONIC 4K ULTRA HD TV - PIXEL 6 - AVANTREE LR BLUETOOTH - 2* X600 SOUNDCORE - HEADPHONES INCLUDE, FIIO, NURAPHONES', FOCAL, OPPO, BOSE, CAMBRIDGE, BOWER & WILKINS, DEVIALET, MARSHALL, SONY, MITCHELL & JOHNSTON - 2*ZBOOK'S- MERCURY BD ROM, ROON, QOBUZ, TIDAL, PLEX, CYBERLINK, JRIVER - MULTI HDD'S -
Oh my god! There's nothing wrong with the bidet is there?
“Nothing discloses real character like the use of power. It is easy for the weak to be gentle. Most people can bear adversity. But if you wish to know what a man really is, give him power. This is the supreme test. It is the glory of Lincoln that, having almost absolute power, he never abused it, except on the side of mercy".
“You see these dictators on their pedestals, surrounded by the bayonets of their soldiers and the truncheons of their police ... yet in their hearts there is unspoken fear. They are afraid of words and thoughts: words spoken abroad, thoughts stirring at home -- all the more powerful because forbidden -- terrify them. A little mouse of thought appears in the room, and even the mightiest potentates are thrown into panic.”
"You don't have free will. You have the appearance of free will.”
“There's a war out there, old friend. A world war. And it's not about who's got the most bullets. It's about who controls the information. What we see and hear, how we work, what we think... it's all about the information!”
***SMILE, BE HAPPY***
System 1: - Amp - Musical Paradise MP-701 mk2 - Neurochrome 686
- Source: Audio Technica LP-5 - Custom 6V6 stage - Novafidelity X30 - Soekris 1421 (LPSU) - Custom TDA1541 C3G DAC -
- Speakers: Martin Logan Prodigy's - Subs: - REL T3's -
System 2 - Amp: Musical Paradise MP 303/Custom 300B SET - Custom 6SL7 Pre -
- Source: Pioneer N-30K - SONCOZ SGD1 -
- Speakers: Loth X BS1's - Sub: REL T3 -