Cs-787 — Pioneer

The acoustic design of the Pioneer CS-787 focuses on delivering a balanced and dynamic listening experience across the frequency spectrum. By utilizing a 3-way driver configuration, Pioneer ensured that lows, mids, and highs were reproduced with impressive clarity and separation. 3-Way, Bass Reflex Woofer: 200 mm (approx. 8-inch) cone driver Midrange: 77 mm (approx. 3-inch) cone driver Tweeter: 66 mm (approx. 2.5-inch) cone driver Frequency Response: 40 Hz to 20,000 Hz Power Handling: 50 W nominal / 80 W music power

If you plug a pair of CS-787s into a cheap 15-watt plastic receiver, you will hate them. They will sound dull, lifeless, and bass-light. These speakers are hungry . They need 50 to 100 watts of clean, high-current power to wake up.

The Apex of the Stone Age: A Technical and Historical Analysis of the Pioneer CS-787 Speaker System

By 1978, Pioneer was riding high. They had successfully bridged the gap between esoteric, expensive European gear and mass-market Japanese reliability. Their "CS" (Cabinet Speaker) series included everything from bookshelf minis to tower behemoths. The CS-787 sat near the top of the mid-range lineup, designed to compete directly with the likes of the Sansui SP-X series and Kenwood’s JL series.

A dedicated cone or dome midrange driver bridges the gap between bass and treble. This driver handles the critical vocal frequencies, ensuring that speech and instruments remain clear and distinct. pioneer cs-787

Let’s start with the nuts and bolts. To understand the CS-787, you have to understand its physical DNA.

It is incredibly common for vintage speakers to have pushed-in dust caps (often done by curious children). While this rarely impacts the sound, it affects the resale value and aesthetics.

Approximately 560 mm (H) x 320 mm (W) x 230 mm (D).

Approximately 7 kg per speaker (14 kg total for a pair). Audio Performance and Character The acoustic design of the Pioneer CS-787 focuses

: The speaker utilizes a robust 8" woofer to provide deep, punchy low frequencies. This is expertly paired with a dedicated midrange driver and a crisp tweeter to ensure vocals and high frequencies are articulated with precision.

They don’t make them like this anymore. And frankly, that’s a shame.

To better understand the CS-787's value, it is helpful to see it in the context of other notable models in the Pioneer CS range. The table below compares the CS-787 with its larger and more famous siblings:

The Pioneer CS-787 is a vintage three-way loudspeaker system from the late 1970s. It represents a golden era of high-fidelity audio engineering. Audiophiles and vintage collectors still seek out these speakers for their distinct sound signature, classic aesthetic, and robust construction. The History of Pioneer's Vintage Loudspeakers 8-inch) cone driver Midrange: 77 mm (approx

Rated at approximately 80W with a 6.3 Ohm impedance.

Users consistently praise the CS-787's balanced and warm sound, noting it plays well even at lower volumes and only improves when powered by a capable amplifier. One owner noted their system, consisting of a Pioneer SA-330 amplifier and CS-787 speakers, delivered a "purely vintage look and feel".

Recent sales data from Europe provides a clear picture of their market value:

The 16" woofer uses a foam surround that will have rotted away by now. Do not play a speaker with rotten foam. You will destroy the voice coil. Re-foaming these speakers is a rite of passage. Kits are available online (around $40-$60 per pair), but it is a fiddly job due to the heavy cone. Pay a professional if you aren't handy.

Large-diameter woofer (typically 10 to 12 inches) designed to move significant amounts of air for low-frequency response.

According to documentation from Hifi-Wiki , the system features the following technical characteristics: 3-way, bass reflex enclosure. Driver Configuration: Woofer: 200 mm (approx. 8-inch) cone. Midrange: 77 mm cone. Tweeter: 66 mm cone.