⚠️ Important Safety Notice
Always discharge capacitors before handling! Even when unplugged, speakers can store dangerous voltage. Use a multimeter to verify no voltage remains. If unsure, consult a professional technician.
Quick Reference: Capacitor Types
Film Capacitors (Polypropylene): Superior choice - More stable, lower ESR, longer lifespan. Recommended for all replacements.
Non-Polarized Electrolytics (NP): Budget option - Direct replacement, economical but may need replacement again in 10-15 years.
Always match: Capacitance (µF) exactly, Voltage (V) equal or higher, Type (NP or film).
A Series Capacitors
Models: A40, A60, A70, A100, A150, A200
| Model |
Capacitor Values |
Type |
Notes |
| A40 (Series I) |
8µF (tweeter)
12µF (woofer) |
NP Electrolytic |
Original: 50V. Replace with 100V film caps for longevity. |
| A40 (Series II) |
10µF (tweeter) |
NP Electrolytic |
Simple 1st order crossover. Single capacitor. |
| A60 |
6µF (tweeter)
12µF (woofer) |
NP Electrolytic |
Often 50V rated. Upgrade to 250V film caps. |
| A70 |
4µF (tweeter)
8µF (mid)
20µF (woofer) |
NP Electrolytic |
3-way design. Take photos before disassembly. |
| A150 |
6µF (tweeter)
12µF + 20µF (parallel mid) |
NP Electrolytic |
32µF total for mid (parallel). May have 2 inductors. |
HD Series Capacitors
Models: HD5, HD7, HD8, HD9, HD10
| Model |
Capacitor Values |
Type |
Notes |
| HD5 |
15µF (tweeter) |
NP Electrolytic |
Simple crossover. Often 100V rated. |
| HD7 |
10µF (tweeter)
20µF (woofer) |
NP Electrolytic |
Check for ferrofluid in tweeters too. |
| HD8 |
12µF (tweeter)
30µF (mid) |
Film (some models) |
Later models used film caps. Check yours. |
| HD9 |
8µF + 2µF (tweeter)
50µF (woofer) |
NP Electrolytic |
10µF total for tweeter (parallel). Complex crossover. |
| HD10 |
6µF (tweeter)
30µF (mid)
60µF (woofer) |
Film |
3-way flagship. Already has film caps but may need replacement. |
VR & Lynnfield Series
Models: VR10, VR12, VR20, VR30, VR40, Lynnfield 400L, 500L
| Model |
Capacitor Values |
Type |
Notes |
| VR10 / VR12 |
8µF (tweeter)
15µF (woofer) |
Film |
Already film caps but check for value drift. |
| VR20 |
10µF (tweeter)
25µF (mid)
40µF (woofer) |
Film |
3-way design. Ferrofluid refresh more critical. |
| VR30 / VR40 |
12µF (tweeter)
30µF (mid)
50µF (woofer) |
Film |
High-end models. Capacitors usually last longer. |
| Lynnfield 400L |
15µF (tweeter)
35µF (woofer) |
Film |
Check for swollen caps. Replace if any doubt. |
CR & Other Series
Models: CR6, CR7, CR8, CR9, CR10, VS, Subwoofers
| Model |
Capacitor Values |
Type |
Notes |
| CR6 / CR7 |
10µF (tweeter)
20µF (woofer) |
NP Electrolytic |
Common values. Easy to find replacements. |
| CR8 / CR9 |
12µF (tweeter)
30µF (woofer) |
Film |
Better quality caps but may still need replacement. |
| CR10 |
15µF (tweeter)
40µF (woofer) |
Film |
Flagship model. Consider premium film caps. |
| PV600 / 700 Subs |
100µF - 470µF (power supply) |
Polarized Electrolytic |
⚠️ These are POWER SUPPLY caps in active subs. Different replacement! |
Important Installation Notes
1. Document Everything: Take clear photos of the crossover before removing any wires or components.
2. Observe Polarity: NP capacitors don't have polarity, but note wire colors and positions.
3. Secure New Caps: Use hot glue or cable ties to secure film caps (they're larger than originals).
4. Test Before Closing: After recapping, test speakers at low volume before reassembling cabinets.
5. Break-In Period: New film capacitors may need 20-50 hours of play to sound their best.
6. Consider Full Service: While you're recapping, clean potentiometers (if present) and resolder all connections.
