The used dynamicaudio acoustics BM5 is a compact two-way speaker listed in grade A condition, and it is a fill or monitoring cabinet rather than a main PA box. Buyers should treat the published specs as the starting point and confirm year of manufacture, quantity and driver history with OxGears before committing, because those fields are not disclosed on the listing.
The BM5 is a 5.25-inch woofer plus 1-inch tweeter cabinet rated 50 to 100 RMS watts at 4 ohms, covering 60 Hz to 20 kHz with 105 dB maximum SPL and 90 by 60 degree coverage. That combination suits short-throw fill, booth monitoring and small distributed systems, not line array or subwoofer duty. Grade A is a cosmetic and functional grading statement, not a service history, so the buying decision turns on what you can confirm about drivers, connectors and quantity. Ask OxGears for current availability and the details the listing leaves open.
1. The 5.25-inch woofer, 105 dB maximum SPL and 60 Hz bottom end place the BM5 in fill and monitor roles, not main PA. 2. At 4 ohms with 50 to 100 RMS watts, amplifier matching matters more than raw power, and bridged or low-impedance amp modes need care. 3. The dual banana plug connector is a domestic-style terminal, so plan cabling adapters before the cabinets land. 4. Grade A does not disclose year of manufacture, quantity or driver originality, so those must be requested.
The listing describes a single cabinet format with one 5.25-inch woofer and one 1-inch tweeter, rated for 50 to 100 RMS watts, with a frequency range of 60 Hz to 20 kHz, maximum SPL of 105 dB, nominal impedance of 4 ohms and coverage of 90 degrees horizontal by 60 degrees vertical. Physical data is 280 by 180 by 170 mm at 5.2 kg. The connector is a dual banana plug. Condition grade is A. Year of manufacture and quantity available are both marked on request.
Read together, those numbers describe a small, light, wide-coverage box. The 90 by 60 degree pattern is wider than many short-throw boxes, which helps in low-ceiling rooms and awkward corners but also means more energy hitting side walls. The 60 Hz lower limit is honest for a 5.25-inch driver and means the cabinet will not carry low bass without help. The 105 dB maximum SPL figure is the ceiling for the whole box, so a pair will not cover a large room at concert level.
Grade A, as described in how used professional audio is graded, is the top of the cosmetic and functional scale. It tells you the unit is expected to be clean and working. It does not tell you whether the woofer is original, whether the tweeter diaphragm has been replaced, or whether the cabinet has been opened. Distributors weighing freight economics should remember that at 5.2 kg per cabinet the BM5 ships cheaply alongside other used pro audio equipment in a consolidated order.
Year of manufacture is listed as on request, which is the single most important missing field for a resale buyer. Cabinet age affects foam surrounds, capacitor ageing in the crossover, and how the cabinet compares with whatever the current version of the model is. Without it, you cannot price the unit against newer stock or judge how much life is left in the drivers.
Quantity available is also on request. For a distributor building a container or a rental company standardising a fill position, quantity decides whether the BM5 is a one-off or a repeatable line item. A single unit is a spare; twenty units are a system.
Driver originality and re-cone history are not stated. A re-coned driver changes the value of a used cabinet, as covered in what a re-coned driver means for used cabinets, and buyers should ask directly rather than assume from the grade.
There is no measurement data: no frequency response plot, no impedance sweep, no SPL verification. Grade A is a visual and functional judgement, not a laboratory result. There is also no statement on grille condition, cabinet finish, handle or mounting hardware, or on the condition of the banana sockets, which are the most wear-prone part of this connector type.
Finally, no price, no minimum order quantity, no lead time and no warranty terms appear in the listing. Those are commercial terms to be obtained in writing, not inferred.
Do not choose the BM5 if you need a main PA cabinet. A single 5.25-inch woofer at 105 dB maximum SPL will not carry a venue floor, and pairing several does not turn it into a line array. Buyers shopping for main systems should look at second hand line array speakers instead.
Do not choose it if you need low-frequency output. The 60 Hz lower limit means kick drum and bass guitar fundamentals sit below the cabinet's comfortable range, so a subwoofer is required for any music-heavy application.
Do not choose it if your process requires a documented year of manufacture, a stated quantity or a service history before you raise a purchase order. Those fields are not disclosed, and a buyer who cannot proceed without them should not start with this listing.
Do not choose it if your amplifier inventory is entirely speakON-based and you are unwilling to make or buy banana adapters. The dual banana plug connector is a fixed feature of the model, not a condition issue.
The obvious trade-off is size against output. The BM5 is light at 5.2 kg and small at 280 by 180 by 170 mm, which makes it cheap to ship and easy to mount, but that same size caps output at 105 dB and bass at 60 Hz. For a distributor, low weight per unit improves freight economics on used pro audio equipment; for a rental company, it means the cabinet covers fewer jobs.
The second trade-off is coverage against control. A 90 by 60 degree pattern is forgiving in difficult rooms and useful as a fill or delay cabinet, but it puts more energy into side walls than a narrower box. In a reverberant venue, that can mean more reflections rather than more intelligibility.
The third trade-off is impedance against amplifier choice. At 4 ohms, two cabinets in parallel present 2 ohms, which many amplifiers will not drive comfortably. Buyers should plan parallel counts against their amplifier's rated minimum load rather than against the cabinet's power rating alone.
The fourth trade-off is grade against evidence. Grade A is a useful filter and reduces the chance of cosmetic surprises, but it does not replace a driver check, a connector check or a request for the year of manufacture. The grade shortens the inspection list; it does not remove it.
Request the year of manufacture and the quantity available in writing, since both are marked on request. Ask whether the woofer and tweeter are original and whether either has been re-coned or replaced, and ask for photographs of the drivers with the grille removed, the rear connector panel and any cabinet corners.
Confirm the connector type on the actual unit and decide how you will adapt dual banana plugs to your amplifier and cable stock before shipping. Confirm the amplifier you intend to use is stable at 4 ohms per channel and at whatever parallel load you plan. In low-ceiling rooms where reflections matter, the wide 90 by 60 degree pattern can still work well as fill within a worship PA system, provided the amplifier load is checked first.
Ask for the commercial terms in writing: unit price, minimum order quantity if any, lead time and any warranty or return position. None of these appear in the listing, so none should be assumed.
For consolidated shipping, review the used line array buying checklist logic for packing and paperwork even though this is not a line array, because the export documentation process is the same. Then send your requirement to OxGears through the contact page with the quantity you need and the destination port, and ask for a current availability confirmation on the dynamicaudio acoustics BM5.
No. With one 5.25-inch woofer, 60 Hz to 20 kHz range and 105 dB maximum SPL it suits fill, delay and monitoring roles rather than main system duty.
It is rated at 4 ohms nominal. Two cabinets in parallel present 2 ohms, so check your amplifier's rated minimum load before planning parallel pairs.
No. Grade A is a condition grade. Driver originality and any re-cone or tweeter replacement are not stated in the listing and must be asked separately.
The listing specifies a dual banana plug connector, so cabling or adapters should be planned before the cabinets arrive.
It is marked on request in the listing, so it must be confirmed with OxGears rather than assumed. ## Sources
The specification values in this article come from the dynamicaudio acoustics BM5 listing on this site. Grading language follows the site's explanation of A, B and C grades. Commercial terms, year of manufacture and quantity are not published and must be requested.
Frequently asked questions
Is the BM5 suitable as a main PA speaker? No. With one 5.25-inch woofer and 105 dB maximum SPL it is a fill or monitoring cabinet, not a main system box.
What amplifier load does it present? It is rated 4 ohms, so two in parallel present 2 ohms; check your amplifier's minimum load before planning parallel pairs.
Does grade A mean the drivers are original? No. Grade A is a condition grade and does not state driver originality or re-cone history, which must be asked separately.
What connector does it use? A dual banana plug, per the listing.
Is the year of manufacture known? It is marked on request on the listing, so it must be confirmed with OxGears.
Want to confirm stock, shipping cost or lead time? Ask about availability and we will check the unit for you.
Danish-made Dynaudio Acoustics BM5 professional monitor speaker, equipped with a 5.25-inch woofer and a 1-inch tweeter. Nominal impedance 4 ohms, recommended amplifier output 50-100 watts RMS, suitable for recording studios or small sound reinforcement systems.
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