TLDR
- There is no single “best” speaker upgrade path for every pinball machine. Modern Sterns already give you more audio control than many owners realize, while Jersey Jack machines often already include Bluetooth audio features that change what you actually need to buy.
- Speaker-only swaps are the cheapest way to clean up stock sound, but they usually do not create the same jump in bass, headroom, or clarity that a proper speaker-and-amplifier kit does.
- If you own a modern Stern or JJP and you care a lot about music, callouts, and bass, the most complete route is usually a full kit from a company like PinWoofer or PinSound rather than a piecemeal swap.
- If you own an older Bally/Williams, Data East, Sega, or older Stern title, board-based systems from PinSound open up a different category entirely, because they are not just speakers. They can replace or modernize the machine’s actual audio system.
- Before you buy anything, verify your exact platform, trim, and speaker size. That small detail is where a lot of audio-upgrade plans go sideways.
Pinball speaker upgrades sound simple until you start shopping. Then you realize “better sound” can mean at least five different things: cleaner backbox speakers, a stronger cabinet woofer, a replacement amplifier, an external powered subwoofer, or a full board-and-speaker rebuild for an older game. And those are not interchangeable choices. They solve different problems.
That lines up with the source transcript behind this article. Its most useful point is not really brand loyalty. It is the more practical claim that a lot of machines are bottlenecked by both the factory amplifier and the factory speakers, so owners who care about soundtrack quality often end up happier when they upgrade the system together instead of chasing one weak link at a time.
Start With the Settings You Already Own
Modern Sterns are more audio-friendly than many people give them credit for. Recent Stern feature matrices for titles like Foo Fighters, John Wick, Dungeons & Dragons, Pokémon, and Star Wars: Fall of the Empire all list a stereo sound system with a 3-channel amplifier, a 10-band graphic equalizer, separate control for backbox and cabinet speakers, CPU-mounted line-out for external amplification, and fade adjustment between front and bottom speakers. That means a surprising number of owners should spend a few minutes tuning the machine before buying hardware.
Jersey Jack changes the equation in a different way. Current JJP pages and product descriptions for titles like Elton John and Guns N’ Roses explicitly mention Bluetooth audio or analog-plus-Bluetooth headphone connectivity, which means some JJP owners already have late-night play and external-audio convenience built into the machine. In those cases, the first question is not “how do I add audio access?” but “do I actually dislike the sound enough to rebuild it?”
Speaker-Only Swaps
The simplest route is a speaker-only upgrade. This is the least invasive option and usually the cheapest way to get rid of thin stock sound, harsh highs, or weak detail in callouts. PinWoofer’s current catalog includes separate backbox speaker pairs, cabinet speaker kits, and full speaker packs for Stern SPIKE, SPIKE-3, SAM, Whitestar, and JJP machines, with current prices ranging from $65 for a SPIKE-3 4-inch backbox pair to $180 for JJP and SPIKE-2 upgraded speaker packs. Pinball Pro still sells traditional complete speaker kits for Stern and older systems, and its SWTR-4 listing describes a package built around 4-inch backbox speakers, an 8-inch subwoofer, and a stereo volume control for the backbox speakers.
There is also a more boutique version of this route. Philharmonic Audio’s current Stern kit is a $300 passive package with separate tweeters, mid-woofers, crossovers, an 8-inch cabinet woofer, and adapters for both 4-inch Pro/Premium plates and 5.25-inch LE plates. That is a more speaker-designer way of approaching the problem than a typical plug-and-play pinball kit.
The strength of speaker-only swaps is that they are relatively easy, relatively reversible, and often enough for people who mainly want cleaner sound. The limitation is just as important: if the factory amplifier is the real bottleneck, a better speaker can only show you so much of its potential. That is why the source transcript specifically warns against assuming an amp-only or speaker-only move will fully solve a weak stock system.
Amplifier-Only Upgrades
Amplifier-only upgrades sit in the middle. They are for owners who are not ready to replace everything, but do want more control, more headroom, and less strain out of the stock setup. PinWoofer currently sells dedicated amplifier options across several modern platforms, including SPIKE-2, SPIKE-3, JJP, and “Plus” or “Mini” variants, with current amplifier prices running from $150 to $275 depending on model.
This route makes the most sense when you already know what bothers you. If the sound gets hard or congested when the game is loud, or if the cabinet woofer feels weak and loose rather than absent, an amplifier upgrade can make a real difference. But this is still the category where expectations matter. The transcript’s point holds up here: if the stock backbox speakers are mediocre, the amp may reveal that problem more clearly rather than magically fixing it.
Full Speaker-and-Amplifier Kits
For modern machines, this is usually the cleanest “I want this to sound meaningfully better” answer.
PinWoofer’s current catalog, as of April 2026, lists a Stern SPIKE-3 Mini Super Kit at $300, a SPIKE-3 Super Kit at $350, a SPIKE-3 Plus Super Kit at $400, a SPIKE-2 Super Kit at $375, and a Jersey Jack PowerWaveJ Super Kit at $350. On the Plus version, the company also lists adjustable bass cutoff, cabinet bass level, backbox volume, treble control, a pro-level line output, an external subwoofer section, and a headphone jack. That is why these kits appeal to owners who want a whole audio solution rather than just better drivers.
PinSound also plays in this “complete system” space, but from a different angle. Its Home Edition PinSound Pack is built around a 200W amplifier, built-in EQ, noise suppression, and plug-and-play installation, and its SonataSPK kits pair coaxial speakers with an 8-inch subwoofer. For Stern SPIKE-2 specifically, PinSound’s current SonataSPK upgrade is marketed as a way to move Pro and Premium games toward a better-than-LE speaker setup while retaining compatibility with Stern’s speaker lighting system.
If your title is soundtrack-heavy, callout-heavy, or bass-dependent, full kits are the easiest category to justify. This is especially true on music games, movie games, and newer machines with dense sound design. They cost more, but they also remove more guesswork.
Board-Replacement Audio Systems for Older Games
Older machines are different because sometimes the upgrade path is not “replace speakers.” It is “replace the audio brain.”
PinSound’s NEO and PLUS boards are currently positioned as universal sound-board upgrades for more than 100 Bally/Williams, Data East, Sega, and Stern titles. The official feature page lists class-D amplification, line-out, EQ, headphone compatibility, motion-control shaker compatibility, original mono output support for Bally Williams WPC and System 11, and compatibility across a very wide machine list. The NEO is the simpler version, while PLUS adds more features and tuning depth.
This becomes especially attractive on WPC-95 games, where PinSound sells a full audio/video bundle that includes the PLUS board, a DMDLux controller board, and wiring for specific titles such as Attack from Mars, Medieval Madness, Monster Bash, Tales of the Arabian Nights, The Champion Pub, and Cactus Canyon. That is not just a speaker upgrade anymore. It is a restoration-and-modernization path.
So if you own a 1990s Bally/Williams game and the audio feels dated, thin, or unreliable, do not think about it the same way you would think about a modern Stern Pro. The architecture is different, and the best upgrade route is often different too.
External Subwoofers, Line-Out, and Headphone Paths
Sometimes you do not actually need a speaker upgrade first. You need better bass routing or better listening options.
Because recent Stern feature matrices list CPU-mounted line-out for external amplification, some owners can get exactly what they want by adding a powered external subwoofer rather than replacing the machine’s internal speakers right away. Pinnovators also sells a dedicated PINsub adapter for Stern SPIKE and SPIKE-2 systems at $35, specifically to connect a subwoofer or external amplifier, and PinWoofer’s Plus amplifier adds its own external subwoofer section and line-output controls. If your complaint is mostly “I want more low-end weight,” this route can be smarter than rebuilding the entire speaker stack.
For shared homes and late-night play, headphone options matter almost as much as speakers. Stern’s official SPIKE 2 and SPIKE 3 headphone jack kit is currently $99.99. PinSound’s Headphones Station MASTER & ULTRA is $89.95 and is marketed for PLUS/NEO boards plus Stern SAM, SPIKE 1, and SPIKE 2. JJP, again, is the outlier here because current pages explicitly advertise Bluetooth audio for headphones or speakers on several machines.
Fitment Matters More Than Most Buyers Expect
Speaker upgrades for pinball machines are full of “almost fits” mistakes.
On Stern SPIKE 2, Stern’s own official speaker lighting accessories say the Pro/Premium lighting kit is designed around a standard 4-inch speaker, while the LE lighting kit is designed around 5.25-inch LE speakers. That lines up with the source transcript, which warns that if you are planning both audio upgrades and lighting rings, you need to think ahead about speaker size and brackets before you start stacking mods. PinWoofer’s speaker catalog and Philharmonic Audio’s Stern kit also reflect this reality by splitting parts around 4-inch and 5.25-inch mounting situations.
This is one of those details people forget until it suddenly matters. If your plan includes speaker lights, audio rings, custom brackets, or a Pro-to-LE style backbox conversion, buy the audio path backward from the fitment constraints rather than forward from the marketing copy.
What I Would Recommend for the Most Common Owners
If you own a modern Stern Pro or Premium and the game sounds thin, I would usually start with one of two routes: a full speaker-and-amp kit if you already know you care about music and callouts, or a simpler speaker pack if you mainly want to clean up the stock sound without turning the project into a bigger mod stack. That recommendation fits both the current product market and the source transcript’s basic “amp plus speakers” logic for music-first owners.
If you own a current JJP, I would start by using the machine’s built-in audio conveniences first. Pair Bluetooth audio, listen carefully, and decide whether the issue is actually quality or just access. Then move to a speaker pack, tweeter upgrade, or amplifier if the sound itself still feels flat.
If you own a 1990s Bally/Williams or a legacy Data East/Sega/Stern title, I would look much harder at PinSound’s NEO, PLUS, or WPC-95 bundle path than I would on a new Stern. Older games often reward a board-level audio upgrade more than a simple speaker swap.
If you are on a budget, a passive speaker kit is still a perfectly reasonable first move. Pinball Pro, PinWoofer speaker packs, and other speaker-only paths still make sense when you want a clear improvement without committing to a full audio rebuild.
If your only complaint is bass, skip the temptation to buy everything. Use the line-out or sub-adapter route first. It is often the cleaner answer.
FAQs
Is a Speaker-Only Upgrade Enough?
Sometimes, yes. If your main complaint is thin or harsh stock sound, better speakers can absolutely help. If your complaint is “this game never sounds full or powerful,” speaker-only upgrades are less likely to satisfy on their own.
Do I Need an Amplifier and Speakers Together?
Not always. But if audio is a major part of why you bought the machine, full kits tend to make more sense because they improve the system instead of one part of it. That is the central argument in the source transcript, and it matches how the modern kit market is structured.
Can I Keep My Speaker Lights?
Usually yes, but you need to buy around them. Stern’s official speaker lighting system is split by speaker size, and PinSound’s Stern SPIKE-2 SonataSPK page specifically says its kit is fully compatible with Stern’s speaker lighting system.
What if I Just Want More Bass?
On a recent Stern, I would strongly consider external subwoofer options first. Stern already lists line-out on recent feature matrices, Pinnovators sells a dedicated SPIKE/SPIKE-2 sub adapter, and PinWoofer’s Plus amplifier includes its own external subwoofer section.
Do Jersey Jack Owners Need a Headphone Kit?
Usually less urgently than Stern owners. JJP’s current pages already advertise Bluetooth audio on multiple titles, including the ability to connect headphones or speakers.