Difference between revisions of "Grundig Fine Arts A-903"
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| − | == | + | == Data == |
| − | {{ | + | {{navigation}} |
| − | ''' | + | '''General''' |
| − | * | + | * Manufacturer: [[Grundig]] |
| − | * | + | * Model: Fine Arts A-903 |
| − | * | + | * Years of manufacture: 1987 - 1990 |
| − | * | + | * Made in: Portugal (Braga) |
| − | * | + | * Color: Black |
| − | * | + | * Remote control: No |
| − | * | + | * Power consumption: ca.370 W (at full output power) |
| − | * | + | * Dimensions: 47cm x 10,5cm x 34cm (W/H/D) |
| − | * | + | * Weight: 10,7 kg |
| − | * | + | * Original price: 1000,00 DM |
| + | '''Connections''' | ||
| + | * Number of inputs: 7 | ||
| + | 1x phono (with rear level control) 1.9 mV / 47 kOhm | ||
| + | 1x CD 180 mV / 230 kOhm | ||
| + | 1x tuner 180 mV / 230 kOhm | ||
| + | 1x TV/Video 180 mV / 230 kOhm | ||
| + | 1x Monitor 180 mV / 230 kOhm | ||
| + | ** 2x Tape (Tape 2 double 1x front 1x rear) 180 mV / 230 kOhm | ||
| + | * Number of outputs: 5 | ||
| + | ** 2x Cinch (Tape 1 and 2) | ||
| + | 2x binding posts (loudspeaker group A and B) | ||
| + | ** 1x headphones | ||
| + | ** All Cinch connectors gold plated | ||
| − | ''' | + | '''Technical Data''' |
| − | * | + | * Continuous power (at THD)Caution ONLY use 8 Ohm speakers!!! |
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** 8 Ohm: 100 W | ** 8 Ohm: 100 W | ||
| − | ** 4 Ohm: | + | ** 4 Ohm: not recommended |
| − | * | + | * Dynamic power |
** 8 Ohm: 150 W | ** 8 Ohm: 150 W | ||
| − | ** 4 Ohm: | + | ** 4 Ohm: not recommended |
| − | * | + | * Total harmonic distortion: <0,006% (bei 1000 Hz und Nennleistung -1 db) |
* Dämpfungsfaktor: >100 | * Dämpfungsfaktor: >100 | ||
| − | * | + | * Frequency response: 5 - 50,000 Hz |
| − | * | + | * Signal-to-noise ratio: |
| − | * | + | * Stereo Channel Separation: |
| − | * | + | * Tone control: |
| − | ** Bass: | + | ** Bass: +/- 10 dB |
| − | + | Treble: +/- 10 dB | |
| − | * Loudness: | + | * Loudness: available |
* High Filter: | * High Filter: | ||
* Low Filter (Subsonic): | * Low Filter (Subsonic): | ||
* Mute: | * Mute: | ||
| − | * Direct/Line-Straight: | + | * Direct/Line-Straight: Called "DEFEAT" at Grundig. |
| + | * Sereo/Mono switchable | ||
| + | |||
| + | '''Special Features''' | ||
| + | * Integrated circuits (IC) type STK4044X as power amplification instead of usually transistors. | ||
| + | * Level adjustment of the preamplification on the front panel from -9 to +6 dB | ||
| − | + | == Notes == | |
| − | + | Other models of the same series: | |
| − | == | + | == Pictures == |
| − | + | http://www.hifi-wiki.de/images/0/00/Grundig_Fine_Arts_A903_innen_klein.jpg | |
| − | + | http://www.webrider.de/axel/a-903.jpg | |
| + | http://www.hifi-wiki.de/images/2/27/A-903.jpg | ||
| − | + | == Reports == | |
| + | Low bleed technics scrap,beware always rusted sensitivity preset,very difficult to access!you just don't get hi-fi from de-amplifier circuits!with DDR boxes good.HW | ||
| − | + | Such a bad review can only be written by someone whose ears are playing tricks. The A 903 is 1A! Grundig should have stuck with something like this, and with the 9000 series. | |
| + | A switch corroded after 20 years is not the world. A bit of Teslanol Oszillin, and the world is back in perfect contact. And these Grundigs with the wooden side panels sound impeccable anyway. | ||
| + | A top amplifier!!! Ralph | ||
| − | + | Grundig was no longer available, what a pity! | |
| + | |||
| + | I've had the A-903 for about 20 years now and use it with the CD player, tuner and cassette deck (!) of the A-903 or 905 series and a Dual turntable. It gets everything out of classical, jazz and sometimes hard rock. The amp works and sounds as good today on my JBL HP 430 as it did on day one. Only the little light that backlights the selector switches once broke. I am still very satisfied and can only recommend the A-903. | ||
| + | |||
| + | The A-903 is a good sounding, valuable amplifier of the upper middle class. Good examples are currently (11/2011) for 60-150 euros to get. This is an excellent price/performance ratio. Standar defect is - as with the 9000 and 9009 series - cold solder joints, especially at the output board, as well as hardening heat conductive paste and (by the heat development) affected electrolytic capacitors. As a prophylaxis it is recommended to unscrew the hybrid power amplifiers and everything else that is connected to thermal paste, clean it and make it fit for the next 20 years. Changing the lighting bulbs is a bit of a fiddly job, especially as the type used there is no longer available. You have to use other bulbs, where you have to extend the legs. Hobbyists like to take LEDs and rebuild the whole thing, then it's quiet for all time. Apart from that, the adjusters used in the A-903 are of such high quality, that even in a 20 year old, well maintained unit, nothing has to scratch. I had already several in the hand, which run also today butter-smoothly and without scratching. A real HiFi tip at a low price! (OSi-12/2011) | ||
| − | + | It should be mentioned that the amplifier reacts quite sensitively when 4 Ohm speakers are connected to the 8 Ohm output. The high currents are quickly acknowledged by the amplifier with a total failure. The power amplifiers are still available, but this is annoying. | |
| + | In case of emergency it is sufficient to connect two 3.9 Ohm load resistors in series to the speakers. | ||
== Links == | == Links == | ||
| − | [[ | + | [[Category:Integrated amplifier]]</0,006%> |
Latest revision as of 05:02, 30 August 2015
Data[edit]
General
- Manufacturer: Grundig
- Model: Fine Arts A-903
- Years of manufacture: 1987 - 1990
- Made in: Portugal (Braga)
- Color: Black
- Remote control: No
- Power consumption: ca.370 W (at full output power)
- Dimensions: 47cm x 10,5cm x 34cm (W/H/D)
- Weight: 10,7 kg
- Original price: 1000,00 DM
Connections
- Number of inputs: 7
1x phono (with rear level control) 1.9 mV / 47 kOhm 1x CD 180 mV / 230 kOhm 1x tuner 180 mV / 230 kOhm 1x TV/Video 180 mV / 230 kOhm 1x Monitor 180 mV / 230 kOhm
- 2x Tape (Tape 2 double 1x front 1x rear) 180 mV / 230 kOhm
- Number of outputs: 5
- 2x Cinch (Tape 1 and 2)
2x binding posts (loudspeaker group A and B)
- 1x headphones
- All Cinch connectors gold plated
Technical Data
- Continuous power (at THD)Caution ONLY use 8 Ohm speakers!!!
- 8 Ohm: 100 W
- 4 Ohm: not recommended
- Dynamic power
- 8 Ohm: 150 W
- 4 Ohm: not recommended
- Total harmonic distortion: <0,006% (bei 1000 Hz und Nennleistung -1 db)
- Dämpfungsfaktor: >100
- Frequency response: 5 - 50,000 Hz
- Signal-to-noise ratio:
- Stereo Channel Separation:
- Tone control:
- Bass: +/- 10 dB
Treble: +/- 10 dB
- Loudness: available
- High Filter:
- Low Filter (Subsonic):
- Mute:
- Direct/Line-Straight: Called "DEFEAT" at Grundig.
- Sereo/Mono switchable
Special Features
- Integrated circuits (IC) type STK4044X as power amplification instead of usually transistors.
- Level adjustment of the preamplification on the front panel from -9 to +6 dB
Notes[edit]
Other models of the same series:
Pictures[edit]
Reports[edit]
Low bleed technics scrap,beware always rusted sensitivity preset,very difficult to access!you just don't get hi-fi from de-amplifier circuits!with DDR boxes good.HW
Such a bad review can only be written by someone whose ears are playing tricks. The A 903 is 1A! Grundig should have stuck with something like this, and with the 9000 series. A switch corroded after 20 years is not the world. A bit of Teslanol Oszillin, and the world is back in perfect contact. And these Grundigs with the wooden side panels sound impeccable anyway. A top amplifier!!! Ralph
Grundig was no longer available, what a pity!
I've had the A-903 for about 20 years now and use it with the CD player, tuner and cassette deck (!) of the A-903 or 905 series and a Dual turntable. It gets everything out of classical, jazz and sometimes hard rock. The amp works and sounds as good today on my JBL HP 430 as it did on day one. Only the little light that backlights the selector switches once broke. I am still very satisfied and can only recommend the A-903.
The A-903 is a good sounding, valuable amplifier of the upper middle class. Good examples are currently (11/2011) for 60-150 euros to get. This is an excellent price/performance ratio. Standar defect is - as with the 9000 and 9009 series - cold solder joints, especially at the output board, as well as hardening heat conductive paste and (by the heat development) affected electrolytic capacitors. As a prophylaxis it is recommended to unscrew the hybrid power amplifiers and everything else that is connected to thermal paste, clean it and make it fit for the next 20 years. Changing the lighting bulbs is a bit of a fiddly job, especially as the type used there is no longer available. You have to use other bulbs, where you have to extend the legs. Hobbyists like to take LEDs and rebuild the whole thing, then it's quiet for all time. Apart from that, the adjusters used in the A-903 are of such high quality, that even in a 20 year old, well maintained unit, nothing has to scratch. I had already several in the hand, which run also today butter-smoothly and without scratching. A real HiFi tip at a low price! (OSi-12/2011)
It should be mentioned that the amplifier reacts quite sensitively when 4 Ohm speakers are connected to the 8 Ohm output. The high currents are quickly acknowledged by the amplifier with a total failure. The power amplifiers are still available, but this is annoying. In case of emergency it is sufficient to connect two 3.9 Ohm load resistors in series to the speakers.
Links[edit]
</0,006%>