Key Features
Big Sound, Wide ReachBluetooth 5.1 gives you up to 100 feet of range, and this speaker can link with up to 10 compatible speakers. That matters on larger jobs where one speaker is never enough. Runs Your WayUse 40V max XGT batteries, 18V LXT batteries, or AC power. That flexibility makes the Makita job site speaker easier to keep going whether you are on a service call, in the shop, or working off temporary power. Built for the JobsiteProtective bumpers and IP65 water and dust resistance help this Bluetooth job site speaker handle rougher conditions than a standard shop speaker. Good fit for real work environments, not just a clean bench.
Overview
The Makita 40V max XGT / 18V LXT Lithium-Ion Cordless/Corded Bluetooth Job Site Speaker is a portable job site speaker built for work areas where regular consumer speakers do not hold up. Model Number: GRM05. This is a job site speaker designed for wireless audio on jobsites, in workshops, and in garages. If you already run Makita batteries, this gives you a tougher, more flexible way to bring music, podcasts, or audio from your phone onto the job without being tied to one power source.
What makes the GRM05 matter is that it is not just a Bluetooth speaker with a rugged shell. It is built around jobsite use. Bluetooth 5.1 delivers up to 100 feet of range, so your phone can stay nearby while you move around the work area. Makita also designed it to wirelessly connect with up to 10 speakers, which is a real advantage on larger sites where one speaker cannot cover the whole space. If you want a more focused setup, two units can be paired for true stereo sound.
Sound hardware is also more serious than what you usually get in compact portable speakers. The GRM05 uses a 5.5 inch woofer with a passive radiator and one 1.5 inch tweeter. In plain terms, that means better low-end presence, clearer highs, and fuller sound in open spaces where weak speakers get lost. Makita calls it up to 3X louder for jobsite versatility, and the speaker layout backs up the idea that this is meant to push sound in places with background noise.
Power flexibility is one of the strongest reasons to buy this unit. The GRM05 works with 40V max XGT batteries, 18V LXT batteries, and AC power. That gives Makita users a lot of options. If you are already on XGT or LXT, you can grab whatever pack is closest and keep moving. If you are stationary, the included AC adapter gives you a corded option so you are not burning through battery runtime unnecessarily.
Runtime is solid for all-day use. Makita states up to 30 hours on a 40V max XGT 2.5Ah battery or up to 36 hours on an 18V LXT 5.0Ah battery, with batteries sold separately. That kind of runtime makes this a practical speaker for long shifts, weekend projects, or shop use where you do not want to think about charging it every few hours.
The control setup is better thought out than most basic work speakers. A full-color LCD control panel displays artist, song, and album information, while also giving you access to pairing, LED light control, equalizer settings, and microphone control. There is also a front light ring with two modes: always on or pulsing with the music. It is a small thing, but it makes the speaker easier to spot in darker areas and gives it a little extra personality without getting in the way of the job.
Makita also covered the practical connection points people actually use. You get one auxiliary port for MP3 compatibility and one USB port for charging mobile devices. That means the GRM05 can work as both a speaker and a charging station at the same time, which is useful when you are short on outlets or trying to keep your phone alive through a long day.
On durability, the GRM05 is clearly aimed at real-world use. Protective bumpers help absorb knocks during transport and setup, and the IP65-rated water and dust resistant construction is engineered for harsher jobsite conditions. It is not a tiny travel speaker, but at 8.4 lbs without a battery it is still easy enough to move around, and the carrying handle makes that part simple. For contractors, service techs, and serious DIY users who want better sound without babying their gear, this is the kind of speaker that makes sense.
Makita 40V max XGT / 18V LXT Lithium-Ion Cordless/Corded Bluetooth Job Site Speaker Delivers Flexible Power
You are not locked into one power source. That is a big deal if your crew already runs different Makita battery platforms or if you want to plug in when wall power is available.
- Compatible with 40V max XGT batteries, 18V LXT batteries, and AC power
- Up to 30 hours runtime on a 40V max XGT 2.5Ah battery
- Up to 36 hours runtime on an 18V LXT 5.0Ah battery
Built to Handle Dust, Bumps, and Daily Transport
This speaker is made for places where regular Bluetooth speakers get wrecked fast. Protective bumpers, a rugged housing, and IP65 resistance help it hold up better in rougher work conditions.
- IP65 rated water and dust resistant construction
- Protective bumpers engineered for increased durability
- Dual-position carrying handle for easier transport
What’s in the Box
- (1) Makita GRM05 Bluetooth Job Site Speaker
- (1) AC Adapter
Batteries and charger are not included.
Key Specifications
| Power Source | Cordless/Corded |
|---|---|
| Voltage (V) | 40V max XGT / 18V LXT |
| Bluetooth | Bluetooth 5.1, up to 100 ft range |
| Speaker Setup | 5.5 in woofer with passive radiator and 1.5 in tweeter |
| Runtime | Up to 30 hrs on 40V max XGT 2.5Ah; up to 36 hrs on 18V LXT 5.0Ah |
| IP Rating | IP65 |
| Weight (lbs) | 8.4 lbs without battery |
| Dimensions | 8-1/2 in x 8-1/8 in x 7-7/8 in |
Compatibility
Battery PlatformCompatible with Makita 40V max XGT batteries and Makita 18V LXT batteries. Corded OperationCan also run on AC power using the included AC adapter. Speaker LinkingWirelessly connects with up to 10 speakers, or pair two speakers for true stereo sound. Device ConnectionsIncludes one auxiliary port for MP3 compatibility and one USB power port for charging mobile devices.
Built For
Construction General Contracting Service Trucks Workshops Garages Remodeling DIY / Hobbyist Large jobsites needing linked speakers
Pro Tip
If you are using the GRM05 on a bigger site, start with two speakers in stereo before jumping straight to a multi-speaker setup. It gives you better left-right separation in one work zone, then you can expand to more speakers when you need wider coverage.
Warranty & Support
3-year limited warranty.
Tool Nut’s Take
Tool Nut’s Take
A real jobsite speaker, not a dressed-up home speaker
The Makita 40V max XGT / 18V LXT Lithium-Ion Cordless/Corded Bluetooth Job Site Speaker gets the important stuff right: flexible power, good runtime, rugged housing, and enough connectivity to actually make sense on a busy site.
- Who it’s for: Makita users, contractors, shop owners, and serious DIYers who want better sound in work environments and already run XGT or LXT batteries.
- Why it stands out: Dual-platform battery compatibility plus AC power is a smart setup, and the ability to link up to 10 speakers makes it more useful than a basic portable speaker.
- Worth knowing: This is a tool-only package, so plan on bringing your own battery and charger if you are not using the included AC adapter.
Common Questions
- Can this speaker run on battery or corded power? Yes. It is designed to run on 40V max XGT batteries, 18V LXT batteries, or AC power.
- How far does the Bluetooth connection reach? Makita lists Bluetooth 5.1 with up to 100 feet of range.
- Can I connect more than one speaker? Yes. Up to 10 speakers can be wirelessly connected, and two speakers can be paired for true stereo sound.
- Is the speaker built for dusty or wet jobsites? Yes. The GRM05 has an IP65 rating for water and dust resistance and uses protective bumpers for added durability.
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