Mr
Iwasaki Chiaki came in his review of luxman sq507x in the japanese hifi magazine
Swing Journal November issue (issued in October 1971) to the conclusion that ;
"The SQ 507 X released by Lux is the "first" product that can reach the level of SQ 38 FD just to overtake it"
japanese text here:
http://audiosharing.com/review/?p=4928#comments
for those interested i insert this rather bad Google translation ;
Iwasaki Chiaki
Swing Journal November issue (issued in October 1971) From
'SJ selection new product listening notes'
Lux's new amplifier SQ507X to introduce here is the amplifier which is the most attractive in the product to be announced in the fall of 1970 and is not ashamed of the name of SJ selection which secured the quality which can fully meet the expectation.
As seen in the company's best-selling SQ38FD amplifier, Lux has commercialized and commercialized only the single tube type currently in the market today, with a very conservative color manufacturer .Nissei Moon, the pitch of technology is remarkable.Today, as a stereo manufacturer transistor amps can make their widths wider, the fact that SQ38FD is still being used as a product is on both the good side and the bad side of this manufacturer.
The good side, in spite of it being, is that it preserves the skill that luxury mania wants, and it is a stereo manufacturer boasting "understanding of music".It can be said that the bad side is making the reason why transistor makers made by this manufacturer are not as good as other companies, and the masterpiece SQ38FD has thinned the shadow of many Laks made transistor and amp It is a fact.
For those who know the high quality of Lux's amplifier, probably not worrying that it will not be possible to keep the position of Lux as an amplifier manufacturer in the future without hitting the image of SQ38 FD It is a common concern and it must have been an expectation for future amplifiers as well.
The SQ 507 X released by Lux is the "first" product that can reach the level of SQ 38 FD just to overtake it.
When I touched the sound of this amp, the contents of this amp had almost never changed from the already released SQ 505 X. I was told that I just switched the power stage to a powerful stone and uploaded the output, I doubted it It is so.In other words, compared with SQ 505 X, the improvement of the tone is clear.<AFrom i = 6> depth and moist sounds, I can hardly imagine the same circuit scheme as SQ505X.Daringly, it can be said that it is a sound close to the JBL amplifier, and it can be said that it inherits the beautiful sound peculiar to SQ 38F. For me who is captive of jazz sound, the sound of Lux's transistor amp, which I have touched up so far, always tastes enough of attack and dullness, but for this SQ 507 X There was not at all.The power of solo by alto and tenor, the resonance which the piano's attack gotchiri, both SQ507X fired out spectacularly.The glow of the cymbals and the thick swells of the bass were reproduced easily.This depth was comparable to the powerful base obtained in SQ 38 FD, and the glow of the trumpet surpassed even the SQ 38 FD.As this moist, if you seek a brilliant moisture other than that, JBL is the only transistor / amplifier. This glossy and straightforward sound must be a product resulting from a fusion of all tiers directly connected with a tone control circuit of a simple constitution peculiar to LUX.If it adds further, it will be in a composition that wasteful of the waste and dropped meat meat entirely without increasing the composition stage at once. Besides, the weight of 11 kg of this amplifier means relaxed regulation of the power supply circuit, and it will show enough consideration of thorough manufacturers' technical staff up to the invisible place. SQ507X which Lucks took on the pride and quality as the highest grade product of all stages directly connected amplifiers such as SQ505X, 503X, which Lucks saw this autumn, is probably a powerful indexing force for future development of this manufacturer .I = 7> If I am captured by the jazz sound, the sound of the Lux's transistor amp, which I have touched up so far, always tastes the attraction and dullness of the tooth for the attack, but on this SQ 507 X There was not it at all.The power of solo by alto and tenor, the resonance which the piano's attack gotchiri, both SQ507X fired out spectacularly.The glow of the cymbals and the thick swells of the bass were reproduced easily.This depth was comparable to the powerful base obtained in SQ 38 FD, and the glow of the trumpet surpassed even the SQ 38 FD.As this moist, if you seek a brilliant moisture other than that, JBL is the only transistor / amplifier.This glossy and straightforward sound must be a product resulting from a fusion of all tiers directly connected with a tone control circuit of a simple constitution peculiar to LUX.If it adds further, it will be in a composition that wasteful of the waste and dropped meat meat entirely without increasing the composition stage at once.Besides, the weight of 11 kg of this amplifier means relaxed regulation of the power supply circuit, and it will show enough consideration of thorough manufacturer technical teams to the invisible place.SQ507X that Lucks embarked on the pride and quality as the highest grade product of all stages directly connected amplifiers such as SQ505X, 503X, which Lux was made this fall, it is probably a powerful indexing force for future development of this manufacturer .I = 7> If I am captured by the jazz sound, the sound of the Lux's transistor amp, which I have touched up so far, always tastes the attraction and dullness of the tooth for the attack, but on this SQ 507 X There was not it at all.The power of solo by alto and tenor, the resonance which the piano's attack gotchiri, both SQ507X fired out spectacularly.The glow of the cymbals and the thick swells of the bass were reproduced easily.This depth was comparable to the powerful base obtained in SQ 38 FD, and the glow of the trumpet surpassed even the SQ 38 FD.As this moist, if you seek a brilliant moisture other than that, JBL is the only transistor / amplifier.This glossy and straightforward sound must be a product resulting from a fusion of all tiers directly connected with a tone control circuit of a simple constitution peculiar to LUX.If it adds further, it will be in a composition that wasteful of the waste and dropped meat meat entirely without increasing the composition stage at once.Besides, the weight of 11 kg of this amplifier means relaxed regulation of the power supply circuit, and it will show enough consideration of thorough manufacturers' technical staff up to the invisible place.SQ507X that Lucks embarked on the pride and quality as the highest grade product of all stages directly connected amplifiers such as SQ505X, 503X, which Lux was made this fall, it is probably a powerful indexing force for future development of this manufacturer .I = 8> This glossy and straightforward sound must be a product resulting from the fusion of the tone control circuit with a simple structure unique to LUX and all stages directly connected.If it adds further, it will be in a composition that wasteful of the waste and dropped meat meat entirely without increasing the composition stage at once.Besides, the weight of 11 kg of this amplifier means relaxed regulation of the power supply circuit, and it will show enough consideration of thorough manufacturers' technical staff up to the invisible place.SQ507X which Lucks took on the pride and quality as the highest grade product of all stages directly connected amplifiers such as SQ505X, 503X, which Lucks saw this autumn, is probably a powerful indexing force for future development of this manufacturer .I = 8> This glossy and straightforward sound must be a product resulting from the fusion of the tone control circuit with a simple structure unique to LUX and all stages directly connected.If it adds further, it will be in a composition that wasteful of the waste and dropped meat meat entirely without increasing the composition stage at once.Besides, the weight of 11 kg of this amplifier means relaxed regulation of the power supply circuit, and it will show enough consideration of thorough manufacturers' technical staff up to the invisible place.SQ507X which Lucks took on the pride and quality as the highest grade product of all stages directly connected amplifiers such as SQ505X, 503X, which Lucks saw this autumn, is probably a powerful indexing force for future development of this manufacturer .
I spend some very formative musical years with a luxman sq507x buying a secondhand example at age 18 loved it until it was stolen after 6 years.
i was not able to find a satisfying replacement nothing sounded just right and i actually stopped listening to music for many years not being able to find that special magic again.
lately - in the last 5 years i have like so many others of my age backtracked in search of lost joys and have made a small Collection after i first recreated that magic setup from my youth and later fell victim to the notorius hifi bug.
so i have the 507 precessor to the 507x which are SEPP OTL capacitor coupled versus the later 507x which are pure complementary of a modern design.
there is quite a leap ind sq between these units which supports restorer-johns commentary.
Paul lehmann
