Pioneer TX-7800: FM/MW Tuner with Variable Capacitor in the Archive
The Pioneer TX-7800 is an analogue FM/MW tuner with a variable capacitor, built from 1979 to 1981 in Japan. It receives FM (87.5–108 MHz) and MW, weighs 7.5 kg and offers fixed and variable RCA outputs. We connected and auditioned it at our shop.
The Pioneer TX-7800 is an analogue FM/MW tuner with a variable capacitor, built from 1979 to 1981 in Japan. It receives FM (87.5–108 MHz) and MW, weighs 7.5 kg and offers fixed and variable RCA outputs. We connected and auditioned it at our shop.
| Manufacturer | Pioneer |
|---|---|
| Model | TX-7800 |
| Type | Tuner with variable capacitor |
| Year / era | 1979 – 1981 |
| Made in | Japan |
| Reception | FM, MW |
| Frequencies | FM: 87.5 – 108 MHz · MW: 535 – 1605 kHz |
| Sensitivity (usable mono) | 1.6 µV, 9.3 dBf (IHF) |
| Stereo 50 dB S/N | 39.2 µV, 37.1 dBf (IHF) |
| Signal-to-noise ratio | Mono: 83 dB · Stereo: 79 dB (65 dBf) |
| Selectivity | 75 dB |
| Outputs | Audio fixed: 650 mV, 4.2 kOhm (RCA) · Audio variable: 0 mV – 1.3 V, 3.6 kOhm (RCA) · oscilloscope (RCA) |
| Antenna inputs | FM 75 Ohm (IEC) or 300 Ohm · MW ferrite/external antenna |
| Power consumption | 23 W |
| Dimensions | 420 × 150 × 390 mm (453 mm with wooden cabinet) |
| Weight | 7.5 kg (8.3 kg with wooden cabinet) |
| Original price approx. | 698 DM |
| Inspected condition | Function flawless (dealer-checked), few signs of use |
Source: hifi-wiki.de / inspected by Audio Everywhere
Our Check & Listening Impression
Connected, tested and auditioned at our shop
Inspected
- Auditioned
—
Stefan Visbach · Audio Everywhere, Goslar-Hahnenklee
Beyond the pure function check, no further sonic notes or service records exist for this particular unit. It was connected and auditioned at our shop; the function is dealer-checked and flawless. You can find the unit at Pioneer TX-7800 Tuner - Radio in the shop.
How does the Pioneer TX-7800 fit in?
The TX-7800 comes from Pioneer's analogue tuner line of the late 1970s and early 1980s. It is a tuner with a variable capacitor – classic tuning via a variable capacitor rather than digital frequency synthesis. The reception figures are solid: usable mono sensitivity is 1.6 µV (9.3 dBf per IHF), the signal-to-noise ratio reaches 83 dB in mono and 79 dB in stereo (both at 65 dBf). The 75 dB selectivity and a spurious response rejection of 95 dB show that Pioneer designed the tuner for clean reception even on a crowded FM band. Three outputs – one fixed (650 mV), one variable (up to 1.3 V) and an oscilloscope tap for tuning aid – make it flexible to integrate into a system. At 7.5 kg and with a silver front (black case, walnut veneer on some markets), it is a typical representative of its class. You can find the documented data at the HiFi-Wiki. More classics are available among the used Pioneer units.
Typical weak points
With analogue tuners of this design and age there are a few points that may appear with age – as a general categorisation, not a statement about this specific unit. The dial illumination or display ages and may dim or fail over time. The alignment of a variable-capacitor tuner can drift over the decades, affecting sensitivity and selectivity. Switches and contacts oxidise over time and may crackle. Such phenomena are normal wear on units from 1979–1981 and not a fault of this particular model. On this unit, the function is dealer-checked and flawless.
Who is this unit for?
The TX-7800 is a recommendation for anyone who appreciates analogue radio with genuine variable-capacitor character and is looking for a tuner that fits nicely into a classic system both sonically and visually. The solid reception figures and the variable output stage make it flexible. Anyone expecting station presets, a remote control or RDS, however, is better served by a more modern unit – the TX-7800 does not offer these features. Browse the other used hi-fi units or go directly to Audio Everywhere. Audio Everywhere (a hi-fi specialist shop in Goslar-Hahnenklee, Germany) inspects every unit and offers test listening.
Sources
Frequently asked questions
What reception bands does the Pioneer TX-7800 offer?
The TX-7800 receives FM (87.5–108 MHz) and MW (535–1605 kHz). The MW antenna can be used as a built-in ferrite antenna or via a high-impedance external antenna; FM via 75 Ohm (IEC) or 300 Ohm.
What year is the Pioneer TX-7800 from?
According to HiFi-Wiki, the tuner was built between 1979 and 1981 in Japan. The original retail price was around 698 DM.
How good is the reception quality of the TX-7800?
Usable mono sensitivity is 1.6 µV (9.3 dBf per IHF), the signal-to-noise ratio is 83 dB in mono and 79 dB in stereo (at 65 dBf). Selectivity is 75 dB – solid figures for clean reception.
What outputs does the Pioneer TX-7800 have?
Three RCA outputs: one fixed (650 mV, 4.2 kOhm), one variable (0 mV – 1.3 V, 3.6 kOhm) and an oscilloscope tap as a tuning aid.
Was this unit inspected?
Yes. The unit was connected and auditioned at Audio Everywhere; the function is dealer-checked and flawless, with few signs of use. No service or repair is documented for this particular unit.