grundig - cn Archives – Luxuryradios

Grundig 5…

21st 2 月 202421st 2 月 2024
by giovanni

Also this reviews will be accompanied by a section with graphs of technical measures of the most important parameters.
There is no such thing anywhere else, as far as I know. Not even the manufacturers themselves detailed the technical features of their own devices at this level.
This new section has been developed for an objective comparison of different devices.
In order to avoid interpreting the measurements incorrectly, it is very important to read the warnings carefully the first time.

The Grundig 5005W was the progenitor of a new line of Grundig radios model. The 5005W line will be followed, with some modifications, by the 5010, the 4010 and other less and less prestigious series.
From the previous top of the range model, the Spitzen-Super UKW 495W inherits the beautiful full-range speakers, one of which is equipped with a coaxial electrostatic tweeter.
There are also many mechanical elements in common with the 495W, the chassis has a very similar setup as does the high frequency group and the variable capacitor, the keyboard and much more. The tuner section is instead more elaborate, sensitive and selective and the low frequency section has completely changed.

The FM converter stage is interesting. Unlike the usual stages composed of the classic ECC85 double triode (specially designed for this), an ECF12 pentode/triode was used on the 5005W. The pentode section is used as an antenna amplifier and is very quiet for a pentode. The triode acts as an AF oscillator. There is then a further medium frequency amplifier pentode, an EF15, before entering the grid of the ECH11 amplifier/mixer.

The low frequency stage is an excellent example of a Push-Pull amplifier, with two EL41s, the most powerful compact tubes at the time.
The phase inverter stage consists of a double triode Ecc40 in "Anode follower" configuration. Also in this case the characteristics of the tube are important. To have correct driving of the two final EL41s, which work in Push-Pull, one on the positive half-waves and one on the negative half-waves, it is advisable to check the signal present on the two grids of the final pentodes. The configuration of the inverter might make you think that the two triodes of the ECC40 work symmetrically, but this is not the case. The first triode works as a preamplifier while the second has only the purpose of inverting the signal, indeed, it has a slightly negative amplification. The advantages of this type of inverter are the high voltage available at the output to effectively drive the finals and the high rate of internal feedback which guarantees a high linearity of response compared to other types of cheaper inverters.

The counter-reaction is moderate, and affects the response curve. The resulting sound is very open, with great presence in the mid and high tones and sufficiently damped bass.
The cabinet is very robust and free of vibrations and resonances.

The speakers:
There are three speakers, all on the front.
These are two full-range cones of 25 cm each and a coaxial electrostatic tweeter which is inserted when the TA button or the UKW/FST button is pressed.
The advantage of having two separate full-range speakers is that for the same amount of air moved, the cones and the voice coil support are much lighter to move, so each speaker is much faster and more responsive. All this translates into more responsive and muffled bass and without serious resonances.
The die-cast baskets ensure the mechanical rigidity of the speaker itself, therefore again reduction of resonances and greater efficiency of the transducer (no force is dissipated in the vibration of the basket).
The entire frequency range is sent to the full-range speakers and the high part is cut mechanically.

The front canvas covering the speakers is never completely transparent from an acoustic point of view.
For this reason the only way to obtain maximum performance from the appliance is to eliminate it.
We can build a false frame in which the original canvas has been installed. This frame attaches to the speaker panel with magnets.
In this way it is possible to detach it when you want to listen to music with maximum transparency and put it back in its place when the radio is at rest to protect the speakers from dust and to restore the original aesthetic appearance of the device.

All this translates into exciting dynamics, brilliance of sound, lack of canvas oscillations in the presence of low frequencies, making listening to this beautiful device very realistic and pleasant.

The first song is the famous Moanin' written and arranged by Charles Mingus. There are actually two different jazz classics called "Moanin'." Both are blues-based songs with gospel music influences. Both evoke, in different ways, a sense of pain but also a sense of exuberant life.
The song was recorded in 1959, the group members included four sax players, John Handy, Jackie McLean, Booker Ervin and Pepper Adams, two trombones, Jimmy Knepper and Willie Dennis, Horace Parlan on piano, Dannie Richmond on drums and Mingus on bass .
The original lyrics of Moanin', by Jon Hendricks and known on the popular album by Art Blakey and the Jazz Messengers, begin like this:

Every Mornin' finds me moanin'I'm alone and crying the bluesI'm so tired of paying the duesEverybody knows I'm moanin'

Every evening I am moanin''Cause of all I the trouble I seeLife's a loosing gamble to meEverybody knows I moanin'

Lord, I spend many a days and nights alone with my griefAnd I pray, really and truly praySomebody will come and bring me relief

The second song is "Smooth Operator" published by Sade in 1984. It was the song that made Sade famous in the USA. The song appears on her debut album, Diamond Life. "Smooth Operator" is about a charming con man who seduces high society women into getting money from them and breaking their hearts.
Despite the cold-hearted lyrics, this song is also often used in cinema in scenes of a romantic encounter.
An interesting curiosity: the music producer Robert Millar recorded the song for a demo to present to the record company to obtain a contract. Epic Records liked it so much that he released it exactly like that, without having it recorded again in the studio.

The third song is Walk On The Wild Side by Lou Reed. The song is very well known. From a musical point of view it is rather simple, supported by a bass line with repetitive "Du du du" choruses and an interesting baritone saxophone solo. The text, however, is the most provocative one could have imagined at the time. It talks about the gender world and male prostitution. Each verse introduces a new character, Holly (Holly Woodlawn), Candy (Candy Darling), Little Joe (Joe Dallesandero), Sugar Plum Fairy (Joe Campbell), and Jackie (Jackie Curtis). All cronies of the Andy Warhol Factory, as well as Lou. A cross-section of the Big Apple's underground.

The fourth song is Yakety Sax written by saxophonist Boots Randolph and guitarist James Q. "Spider" Rich. The song became famous as the closing song on The Benny Hill Show. It is a piece of "instrumental novelty song", a light piece of music which is usually, but not in this case (instrumental), accompanied by a fun and topical text. The song is inspired by Yakety Yak recorded in 1958 by the Coasters from which it took its title. Yakety Yak is a slang expression that means to talk for a long time for nothing, to chat in vain.

And finally, to really put the device to the test, the final part of the drum solo from Led Zeppelin's Moby Dick. In this piece the skill of John Henry "Bonzo" Bonham is expressed at the highest levels. Artistic heir to Ginger Baker, Bonham had developed spectacular right hand/left hand/foot sequences, which were particularly exciting for him in live concerts. The piece is really difficult and requires great strength, and probably also great anger. Bonham's life was filled with fights, trashed hotel rooms, drinking, orgies, except when he was at home in his cottage in Worcestershire. Bonham died at the age of 32 after choking on his own vomit one drunken evening.

BLUETOOTH

Bluetooth receiver embedn

CONNESSIONE A DISPOSITIVI DIGITALI

Each radio is equipped with a cable for connection to any digital device.n

– Bluetooth receiver embed – The unit is equipped with a BLUETOOTH receiver powered directly by the receiver power supply. This makes it possible to control the amplifier from any external digital device as an IPAD, a Smartphone, or a sophisticated multimedia station. So you can hear your preferred web station or your lossesless file without cables on the room. Wireless Receiver can be equipped upon requests.
– Multi Platform Connection – A customized adaptation cable to connect any digital device as Iphone, Smartphone, Laptop, CD Player etc. will be provided with this radio. This special cable suits the different impedances between the modern equipment and the receiver. Furthermore the two stereo channels flow into one without increasing the load to the input unit.

1930 - At 22 years old Max Grundig begin a radio repair business.
1939 - The II world War start. Grundig works primarily for the Wehrmacht and repair of telecommunication equipment.
1945 - Immediately after the war, the demand for repair work was very great. Max Grundig built the first two Grundig appliances: the Tubatest tube tester and the Novatest testing device.
1947 - Start the sale of a kit radio, the Heinzelmann. The unit is the basis of success, sold more than 15,000 pieces.
1950 - Very high frequency (VHF) is introduced to Germany and places new demands on the industry. Grundig launches the 380 W on the market.
1952 - The first television channel starts up in Germany. After intensive research, Grundig launches the FS 080 onto the market. In the same year the first portable tape recorder Reporter 500 L is created.
1956 - After a lot of radio produced with progrssively high performances was produced the Concert Radio 5080 equipped with an equaliser, which has five controls and a visual display.
1965 - A new factory is established in Braga, Portugal. The Satellit 205 is one of many appliances in the Satellit series. This product marks the beginning of Grundig production of high-quality global receivers.
1970 - The Audiorama 7000 Hi-fi was produced, it has twelve dynamic speaker systems in one speaker.
1976 - The Reel Tape Recorder TS 1000 is equipped for semi-professional use.
1980 - The slim-line Hi-fi Tuner ST 6000 and the Monolith Hi-fi Dynamic Flat Top Antenna, which has 22 speaker systems, are two particularly popular appliances in the new hi-fi range.
1984 - After severe drop in sales Philips increased its stake in Grundig 31.6 percent and takes over the corporate management.
1997 - Philips pulls out of its involvement with Grundig.
2003 - The company files for bankruptcy.
2008 - Turkey's Koç Holding took full ownership of Grundig Multimedia B.V., the parent company of Grundig Intermedia GmbH in Nuremberg.

Courtesy of: Grundig

Year of production: 1951
Superheterodyne IF 468/10700
9 AM circuits
9 FM circuits

Wavebands:
Long wave: 150 - 310 KHz
Medium wave 1: 515 - 950 KHz
Medium wave 2: 950 - 1620 KHz
Short wave 1: 5,9 - 8,6 MHz
Short wave 2: 8,6 - 12,5 MHz
Short wave 3: 12,5 - 18 MHz
FM: 86,5 - 100 MHz

Loudspeakers:
2 x 24 cm Fullrange
1 x coaxial electrostatic tweeter

Dimensions (LHD): 706 x 396 x 288 mm / 27.8 x 15.6 x 11.3 inch
Net weight: 19.5 kg / 42 lb 15.2 oz

10 tubes: ECF12 EF15 ECH11 EBF15 EM71 EAA11 EF11 ECC40 2x EL41

MEASURED TECHNICAL FEATURES

IMPORTANT REMARK
(to be read carefully at least the first time)

The following measures have been carried out in order to compare, from an electrical point of view, the devices that will be reviewed on this site. It is not possible to make comparisons with measurements made by other laboratories on different devices. The instrumentation and measurement conditions are probably very different.
The instrumentation used for the measurements is obsolete and unprofessional. We believe that more precise instrumentation is not necessary due to the tolerances of the human auditory system. Distinguishing a distortion of 1% from one of 1.1% or 1.001% only makes sense from the electrical point of view. Probably no one can hear the difference by ear. Only a child and very few lucky people can perceive the difference between a flat response curve up to 16 KHz and one up to 20 kHz.
The perception of sound depends on many factors, namely the age of the listener, the listening environment, the musical genre that is being reproduced, the listener's expectations, his or her listening habits and knowledge and many other factors, besides of course the quality of the other devices. Therefore, there is no direct and unique relationship between the results of the measurements made and the pleasantness of listening to a specific device.

BANDWIDTH

Normally the measurement of the bandwidth is done on a resistive load. Therefore, the deformation caused by the loudspeakers' inductive load and the effect of the mechanical resonance of the speakers themselves on the feedback circuit are not considered. The effects are by no means negligible, the measurements carried out on a purely resistive load are always very linear but they don't coincide with the real frequency response.

On the other hand, this response curve was measured on an inductive laod, that is, with its own loudspeakers.
The frequency response measurements were made with a sinusoidal generator and a Wandel & Goltermann WM – 20 level meter.
You can see the actual frequency response on the vobulator' screen.

5050W - cn

Grundig 5…

15th 10 月 20237th 2 月 2024
by giovanni

The Grundig 5050W was the most prestigious model produced by the German company in 1953. The version we present in this review has been modified in order to maximize the performance of this device.

The FM converter stage is particularly interesting. Unlike the usual stages composed of the classic ECC85 double triode (specially designed for this) two separate tubes were used on the 5050W in order to avoid any capacitive interference between the antenna amplifier stage, consisting of a single EC92 triode and the oscillator stage /mixer, consisting of a double ECC81 triode. The stability and silence characteristics of this stage are excellent. It is only recommended to be very careful when replacing the ECC81 due to the differences in interelectrode capacitance between tubes from different manufacturers, which could cause differences in the operation of the stage.

The power output stage is an excellent example of a Push-Pull amplifier, with two EL84s with well-known sonic characteristics.
The phase inverter stage consists of a double triode Ecc81 in "Anode follower" configuration. Also in this case the characteristics of the tube are important. To have correct driving of the two final EL84s, which work in counter-phase, one on the positive half-waves and one on the negative half-waves, it is advisable to check the signal present on the two grids of the final pentodes. A possible correction can be obtained by intervening on the R8-R53 divider but the modification requires a certain amount of expertise and equipment.

The feedback is moderate, and affects the response curve. The resulting sound is very open, with great presence in the mid and high tones and sufficiently damped bass.
The cabinet is very robust and free of vibrations and resonances.

There are four speakers, all on the front.
These are two full-range cones of 25 cm each and two coaxial electrostatic tweeters which are inserted when the TA button or the UKW/FST button is pressed.
The advantage of having two separate full-range speakers is that for the same amount of air moved, the cones and the voice coil support are much lighter to move, so each speaker is much faster and more responsive. All this translates into more responsive and muffled bass and without serious resonances.
The die-cast baskets ensure the mechanical rigidity of the speaker itself, therefore again reduction of resonances and greater efficiency of the transducer (no force is dissipated in the vibration of the basket).
The entire frequency range is sent to these speakers and the high part is cut mechanically.

The front canvas covering the speakers is never completely acoustically transparent.
For this reason, the only way to obtain maximum performance from the appliance is to eliminate it.
We built a dummy frame into which the original canvas was installed. This frame attaches to the speaker panel with magnets.
In this way it is possible to detach it when you want to listen to music with maximum transparency and put it back in its place when the radio is at rest to protect the loudspeakers from dust and to restore the original aesthetic appearance of the unit.
As an example, we publish on the page a photo of a device previously made with detachable canvas.

All this translates into exciting dynamics, brilliance of sound, lack of oscillation of the canvas in the presence of low frequencies, making listening to this beautiful device very realistic and pleasant. With a pinch of eccentricity.

The first song Elli is taken from Avishai Cohen's album Continuo. The album consists of 10 songs where Cohen's bass is always present. The entire album is inspired by traditional Middle Eastern music with great attention to classical music and with energetic solo cues that make it one of the artist's most interesting productions. Amos Hoffman contributed the characteristic sound of his instrument, an oud, to some songs on "Continuo".

The second piece is the famous "Ave Maria" by Franz Schubert performed by the tenor Luciano Pavarotti. Schubert composed ''Liederzyklus vom Fräulein vom See'' (Song Cycle from the Lady of the Lake) in 1825, inspired by the poem The Lady of the Lake'' by Walter Scott. The third lieder of Schubert's work, it was composed for the female voice but is often performed by baritones or tenors.

The third song is taken from Ana Caram's album "Postcard from Rio". This is Samba Torto, a song by Antonio Carlos Brasileiro de Almeida Jobim. Tom, as Jobim called himself, knew how to blend samba and jazz, giving life to Bossa Nova. Tom then made Bossa Nova known in the USA and around the world. His most famous album, “The Man From Ipanema”, is worth listening to.

The fourth song is the very famous Back to Black by Amy Winehouse. Literally Back to Black actually means returning to a state of depression after the end of a love relationship. She herself specifies that it is a state of despondency in which the pain of loneliness drowns in alcohol and drugs. The reference is to her tormented history with Blake Fielder-Civil, which led to her death after a physically and psychologically toxic marriage, where Amy, already debilitated by eating disorders, did not last long.

The fifth song is Corpus Christi Carol by Benjamin Britten performed by Jeff Beck. Corpus Christi Carol was first performed by Leslie Woodgate. The text appears to be an allegory in which the crucifix is described as a wounded knight, and the knight could be Christ who bleeds incessantly for the sins of humanity. The lyrics of Britten's re-edition were taken from the Christmas carol "In the cold/grey, midwinter" by the English poet Christina Rossetti.

BLUETOOTH

Bluetooth receiver embedn

MULTI PLATFORM CONNECTION

Each radio is equipped with a cable for connection to any digital device.n

1930 - At 22 years old Max Grundig begin a radio repair business.

1939 - The II world War start. Grundig works primarily for the Wehrmacht and repair of telecommunication equipment.

1945 - Immediately after the war, the demand for repair work was very great. Max Grundig built the first two Grundig appliances: the Tubatest tube tester and the Novatest testing device.

1947 - Start the sale of a kit radio, the Heinzelmann. The unit is the basis of success, sold more than 15,000 pieces.

1950 - Very high frequency (VHF) is introduced to Germany and places new demands on the industry. Grundig launches the 380 W on the market.

1952 - The first television channel starts up in Germany. After intensive research, Grundig launches the FS 080 onto the market. In the same year the first portable tape recorder Reporter 500 L is created.

1956 - After a lot of radio produced with progrssively high performances was produced the Concert Radio 5080 equipped with an equaliser, which has five controls and a visual display.

1965 - A new factory is established in Braga, Portugal. The Satellit 205 is one of many appliances in the Satellit series. This product marks the beginning of Grundig production of high-quality global receivers.

1970 - The Audiorama 7000 Hi-fi was produced, it has twelve dynamic speaker systems in one speaker.

1976 - The Reel Tape Recorder TS 1000 is equipped for semi-professional use.

1980 - The slim-line Hi-fi Tuner ST 6000 and the Monolith Hi-fi Dynamic Flat Top Antenna, which has 22 speaker systems, are two particularly popular appliances in the new hi-fi range.

1984 - After severe drop in sales Philips increased its stake in Grundig 31.6 percent and takes over the corporate management.

1997 - Philips pulls out of its involvement with Grundig.

2003 - The company files for bankruptcy.

2008 - Turkey's Koç Holding took full ownership of Grundig Multimedia B.V., the parent company of Grundig Intermedia GmbH in Nuremberg.

Courtesy of: Grundig

MEASURED TECHNICAL FEATURES

IMPORTANT REMARK
(to be read carefully at least the first time)

The following measures have been carried out in order to compare, from an electrical point of view, the devices that will be reviewed on this site. It is not possible to make comparisons with measurements made by other laboratories on different devices. The instrumentation and measurement conditions are probably very different.
The instrumentation used for the measurements is obsolete and unprofessional. We believe that more precise instrumentation is not necessary due to the tolerances of the human auditory system. Distinguishing a distortion of 1% from one of 1.1% or 1.001% only makes sense from the electrical point of view. Probably no one can hear the difference by ear. Only a child and very few lucky people can perceive the difference between a flat response curve up to 16 KHz and one up to 20 kHz.
The perception of sound depends on many factors, namely the age of the listener, the listening environment, the musical genre that is being reproduced, the listener's expectations, his or her listening habits and knowledge and many other factors, besides of course the quality of the other devices. Therefore, there is no direct and unique relationship between the results of the measurements made and the pleasantness of listening to a specific device.

BANDWIDTH

Inside the cabinet there is a dipole for FM reception and a ferrite rotating aerial for AM reception.
Ferrite aerial can be rotated from the outside to achieve a perfect tuning of the device in the AM.
In this picture you can see the rotation mechanism, and the aerial position indicator.
The reception sensitivity with internal aerials is very good. This unit was in fact produced when there were not many radio stations, and those available were far from each other.
Using an external aerial sensitivity is further increased.

4055 - cn

Grundig 4…

18th 3 月 202313th 6 月 2024
by giovanni

german radios - cn

Grundig 5…

4th 5 月 202025th 11 月 2021
by giovanni

The Grundig 5010 is the most powerful monaural device ever built by this brand.
Grundig used to produce different classes of devices. Those in the 1xxx series are the cheapest, those in the 2xxx and 3xxx series are middle class, those in the 4xxx and 5xxx series are high class.
Clearly, the 5010 belongs to the higher class series, and it shows.
The electronic circuit of the 5010 is the most elaborate one could imagine in a commercial device built in 1952. The output stage consists of a pair of powerful EL12 push-pulls. No other manufacturer has used of these expensive tubes in a couple.
The output transformers are two, separate, one for the bass and one for the mid-high.
The first is equipped with a double secondary winding, one for the mid-woofer and one for the feedback circuit.
The mid-high transformer is also equipped with a double secondary winding, one for the cone mid-tweeter and one for the electrostatic tweeter.
The crossover consist of capacitors and coil networks. Really remarkable.
The tone controls are applied on the feedback network, further reducing the distortion, but risking instability when the potentiometer are in their extreme positions.
The Push/Pull phase reversal is provided by a dual triode ECC40, where each section drives one of the two EL12s.
The preamplifier is composed of the triode of an EABC80.
The power supply filter consists of a Pi filter of capacitor and inductor.

The FM antenna circuit consists of an EF80 pentode and the local oscillator consists of an EC92 triode.
As it is the only one, the variable capacitor is composed of many sections, for the AM and FM bands.

The tracks chosen for the test are only two. They are quite long as they have not been cut, they have been kept in all their duration. This is because they are both tracks that develop in different ways, alternating moments of pianissimo with areas of big explosion. In the case of the Overture 1812 this last statement must be taken literally.

Binker and Moses have recently emerged in the London jazz scene in the last few years and have the great merit of having aroused in young people an authentic interest in this musical genre, often followed by a more mature audience.
The song “Fete By The River” was recorded live at the Total Refreshment Center in London on June 26th 2017. This excellent recording recreates all the freshness and warmth that are typical of the duo's performances. The video, which is very well done, is also on Youtube, and it is worth seeing.
Drummer Moses Boyd can keep two different rhythms simultaneously, as if there were two drummers playing next to each other.
Binker Golding uses the entire excursion of the saxophone alternating very low and warm notes with disruptive and impressive high-pitched sounds . Binker alternates in a very instinctive way some pianissimo that are almost whispered and explosions of very colorful notes that fill the environment and manage to draw the listeners' attention.
A sequence of syncopated rhythms that has you on the edge of your seat until the end of the track and then bursts into a liberating applause of heartfelt participation.
There is a scent of jazz of the great masters.
The Grundig 5010, with its power and dynamics manages to convey all the expressive capacity of the duo with a realism that makes it hard to believe that it comes from a 1952 radio.

P.I.Tchaikovsky - 1812 Overture: one of the most controversial tracks, but certainly one of the most loved by the public was written to commemorate the Russian success in the battle of Borodinó on September 7th 1812, fought during Napoleon's campaign in Russia.
It was commissioned for the inauguration of the huge Cathedral of Christ the Saviour in Moscow, built by the will of Tsar Alexander I as a memorial for the Russian victory of 1812 over the Napoleonic army.
The overture begins with the orthodox song “Spasi, Gospodi, Lyudi Tvoya” (“God, preserve your people”). It then continues with the popular melody, “U vorot” (“At the gates”). This first part is meant to convey the joy of popular and religious life before the arrival of the Napoleonic troops, represented by the Marseillaise (which however was not used as a national anthem at Napoleon's time).
The decreasing that follows represents the withdrawal of the French troops from Moscow and the arrival of cannon shots marks the military advance of the victorious Russian army. The tolling of bells marks the end of the conflict and the Russian imperial anthem “Bóže, Carjá chraní!” (“God save the Tsar”) is heard in the background (this hymn was not in use at the time either, just like the Marseillaise!).
Even in this very difficult track, the muscles of the 5010 and its excellent speakers have allowed an exciting and distortion-free listening, even at rather high volumes. The engraving is the famous one by Telarc, and you can hear it.

BLUETOOTH

Bluetooth receiver embed

MULTI PLATFORM CONNECTION

Each radio is equipped with a cable for connection to any digital device.

- Bluetooth receiver embed - The unit is equipped with a BLUETOOTH receiver powered directly by the receiver power supply. This makes it possible to control the amplifier from any external digital device as an IPAD, a Smartphone, or a sophisticated multimedia station. So you can hear your preferred web station or your lossesless file without cables on the room. Wireless Receiver can be equipped upon requests.

- Multi Platform Connection - A customized adaptation cable to connect any digital device as Iphone, Smartphone, Laptop, CD Player etc. will be provided with this radio. This special cable suits the different impedances between the modern equipment and the receiver. Furthermore the two stereo channels flow into one without increasing the load to the input unit.