NAD Model 802 (1979)
A 40-pound floorstander that trades reflex-box punch for a sealed-cabinet midrange that owners still talk about four decades on.
Overview
NAD first offered the Model 802 in 1979. The spec sheet asks for modest amplifier power, gives an honest sensitivity figure, and uses drivers picked to work together rather than to make noise. The 802 is a 3-way floorstanding loudspeaker weighing 18 kg (40 lb.), with dimensions of 300 × 800 × 300 mm. That is a tall, narrow column, and it fit a late-1970s living room without taking it over. The recommended amplifier power is 10-100 W, so it was never a current-hungry brute. NAD built it to work on modest receivers.
The enclosure is where the record gets messy. The original NAD brochure, quoted by long-time owners, describes the 802 as a "3-way acoustic suspension" design. That means a sealed box, where the air spring inside the cabinet controls cone motion. This can't be squared with the "bass reflex" label that appears in some database entries. One source is wrong, or there were running changes. The brochure is the manufacturer's own document, so the acoustic suspension description carries more weight. Collectors should still know about the discrepancy before they buy a pair expecting a ported thump.
The frequency response is rated at 45-20,000 Hz (±3 dB), a figure corroborated by both the hifi-wiki database and the AudioKarma brochure transcription. Nominal impedance is 8 ohms, sensitivity is 90 dB/W/m, and the crossover points are 500 and 3,500 Hz. That adds up to a speaker that is easy to drive and not fussy about amplifiers. Sound Arts (December 1978, p.41) noted the 802's maximum sound level of 120 dB, which is a lot of headroom for such a modest power recommendation.
Key Features
25mm Soft-Textile Dome Tweeter
The top end is a 25mm soft-textile dome. That was becoming the norm in the late 1970s as manufacturers moved away from metal or paper cones for high frequencies. Owners describe the result as "sweet highs, no bite." The soft dome rolls off gently rather than ringing, so the 802 is forgiving of bright recordings and harsh upstream electronics. The trade-off, as with any soft dome of this era, is that the ferrofluid in the voice coil gap eventually ages and thickens. AudioKarma posters report that the tweeters need the fluid replaced as they age, and that finding original replacements is difficult. The units were matched to the crossover, and swapping in aftermarket parts without adjusting the network is asking for trouble.
50mm Soft-Texture Dome Midrange
The midrange is a 50mm soft-texture dome, and it is the driver owners rave about. "Very natural midrange… the soft dome does it well" is a typical AudioKarma assessment, and long-term owners agree the 802 excels on vocals, classical, and jazz. The 500 Hz lower crossover point lets the midrange dome handle the presence region without strain. The 3,500 Hz upper crossover keeps it well away from the tweeter's breakup modes. One owner called them "musical and highly listenable after a cap change," which covers both the strength and the maintenance reality.
Two 200mm Bass Drivers
The low end comes from a pair of 200mm bass drivers working together. In an acoustic suspension cabinet, two smaller cones can move the same air as one larger driver while keeping moving mass lower and transient response quicker. The trade-off, as one owner put it, is that the "mid-bass slightly lacks punch compared to a reflex box." The sealed design gives up that kick for a drier, more controlled low end that blends better with the midrange. The 90 dB sensitivity is respectable for a sealed cabinet, and with a 10-100 W recommended range, a decent 50W integrated amp will drive them to satisfying levels.
Sealed Enclosure Design
The acoustic suspension approach is confirmed by the NAD brochure, if not by every database. Sealed boxes roll off bass more gradually than ported designs, so the 802 can sit closer to walls without the boom that plagues rear-ported speakers. One owner noted that the 802s "want to be away from walls" to reduce mid-bass emphasis, but the sealed alignment is still more forgiving of room placement than a reflex design. The 18 kg weight comes from the solid cabinet construction needed to keep a sealed box inert. The internal air pressure demands rigidity that lightweight enclosures can't provide.
Collectibility & Maintenance
The 802 has a devoted following among vintage speaker enthusiasts, but it is not a set-and-forget purchase. The most common issue, reported consistently by owners and technicians, is foam surround rot on the 200mm bass drivers. The foam surrounds will eventually deteriorate regardless of how the speakers were stored, and refoaming is the standard remedy. The good news is that it is a DIY job using a generic 200mm kit. AudioKarma threads walk through the process step by step, and anyone comfortable with a soldering iron and some patience can do it.
The crossover capacitors are the other age-related failure point. Multiple forum posts confirm that the 802s benefit from a capacitor replacement as they age. The original electrolytics drift out of spec after four decades, and replacing them restores the voicing NAD intended. Owners describe the 802s as "superb for vocals" once recapped and refoamed, which suggests the design is sound and the components are simply at the end of their service life. The tweeters are a harder problem. The ferrofluid in the voice coil gap dries out, and finding original replacement tweeters is difficult. Experienced owners advise servicing the ferrofluid rather than swapping drivers, since the units are matched to the crossover network.
Current market pricing is difficult to pin down. Classified listings in Europe have appeared in the €200-400 range for pairs with original stands, but there is no consistent auction data to establish a trend. The 802 has not reached the collector frenzy of some British and American classics of the same era. That works in the buyer's favor, since these are still relatively affordable entry points into serious vintage listening, provided you factor in the cost of refoaming and recapping. The parts are available and the work is straightforward.
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