Polk Audio SDA-SRS Value & Price History
As of 2026-09-21, a Polk Audio SDA-SRS has a market value at around $525 (per pair). Based on 608 estimated sales.
Price history
Asking median is up 317% over the last 45 days ($600 → $2,500).
View as table
| Date | Asking | Restored | Sold |
|---|---|---|---|
| 2026-08-08 | $600 | — | — |
| 2026-08-28 | $2,500 | — | — |
| 2026-09-01 | — | — | $519 |
| 2026-09-05 | — | — | $520 |
| 2026-09-09 | — | — | $525 |
| 2026-09-13 | — | — | $525 |
| 2026-09-17 | — | — | $525 |
| 2026-09-21 | — | — | $525 |
Daily trimmed medians from qualifying eBay listings; days without a fresh sync are not plotted.
Specifications
| Years produced | 1983–1991 |
| Type | Speaker |
| Brand | Polk Audio |
| Original MSRP | 2,000 (1983) |
| Inflation-adjusted | ~$6,600 today |
| Market value (sold) | $525 |
Buying notes
Polk SDA speaker with spatial dimension ambience circuitry. The SDA interconnect cable between the two speakers is required for the spatial effect; verify it's included. Check both woofers for surround condition and all drivers for output. The SDA effect only works when the cable connects both speakers.
Parts & supplies
Common maintenance items for the Polk Audio SDA-SRS. eBay links are model-specific searches; Amazon links are for generic supplies that work across most equipment.
- Polk Audio SDA-SRS surround refoam kit on eBay →
- Polk Audio SDA-SRS crossover rebuild caps on eBay →
- Polk Audio SDA-SRS replacement tweeter on eBay →
- Polk Audio SDA-SRS grilles and badges on eBay →
- Speaker wire — 16awg is standard for most setups on Amazon →
- Banana plugs — cleaner connection than bare wire on Amazon →
- Polyfill acoustic stuffing — reduces internal resonance in sealed and ported cabinets on Amazon →
Purchases through these links may earn StereoWorth a small commission at no extra cost to you. See our affiliate disclosure. Repair budgeting: what vintage stereo repair actually costs.
Comparable models
- Polk Audio LSi25 $49/pair
- Klipsch Klipschorn $5,500/pair
- Altec Lansing Model 19 $290/pair
Current listings
Live listing data loads after the next price sync.
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