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Mackie HR824 Studio Monitors - Pair - $372 (Cleveland Park, DC)
Newark St near Highland Pl
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I am pricing as if for a single monitor in Very Good condition, with the other one thrown in for free, but of course the second monitor is fixable by someone with basic knowledge of electronics repair. There are some great YouTube vids showing exactly how to replace the capacitor; just search Google for "repair mackie hr824 capacitor".
I bought these monitors new in 1998 (see receipt photo) but frankly did not use my studio much back then so there is very little wear and tear on these monitors.
They are each packed in their original box and contain the original manual, spec sheet and registration form. Since monitors are fragile I can only offer local pickup in the Washington DC area.
General info
The original Mackie HR824 (often called “mk1”) is a bi‑amped, 2‑way active nearfield monitor with an 8.75‑inch woofer and a rear passive radiator, produced roughly from the late 1990s to mid‑2000s.
Core acoustic specs
- Frequency response (free field): approximately 39 Hz–20 kHz within ±1.5 dB.
- Lower cutoff frequency: about 37 Hz at −3 dB.
- Upper cutoff frequency: about 22 kHz at −3 dB.
Drivers and amplification
- Low‑frequency driver: 8.75 inch woofer (die‑cast chassis, rubber surround).
- High‑frequency driver: 1 inch aluminum‑alloy dome tweeter.
- Amplifier power: 150 W for LF (4 Ω load) and 100 W for HF (6 Ω load), bi‑amped.
- Max SPL: around 100 dB SPL at 1 m for a single monitor, with peak pair SPL spec’d around 120 dB at 1 m.
Electronics and performance
- Crossover: active, modified Linkwitz‑Riley, 24 dB/octave.
- Distortion: typically specified under about 0.035% THD/IMD at rated output levels.
- Slew rate: greater than roughly 35 V/µs.
Cabinet and connections
- Enclosure: 3/4 inch MDF with 1 inch front baffle, rear‑firing mass‑loaded passive radiator, internal bracing and acoustic foam damping.
- Inputs: balanced XLR, balanced 1/4 inch TRS, and unbalanced RCA.
- Controls (rear): Acoustic Space switch (0, −2, −4 dB), LF roll‑off (37/47/80 Hz), and HF shelf (−2/0/+2 dB), plus an input sensitivity trim.
Physical data
- Type: active, 2‑way nearfield studio monitor.
- Dimensions (H × W × D): roughly 15.75 in × 10.0 in × 12.2 in (about 400 × 254 × 310 mm).
- Weight: on the order of 30–33 lb (around 14–15 kg) per speaker.