Martin Audio A55 Buying Guide: Condition Notes for B2B Buyers

The Martin Audio A55 is a two-way full-range enclosure built around a 1x 15" LF driver and a 1x 1.4" HF compression driver, rated at 1200 W AES with a frequency range of 55 Hz – 20 kHz and a maximum SPL of 134 dB. Its 8 Ω impedance, 90° H × 60° V coverage and 38 kg weight (720 × 480 × 440 mm) make it a workable box for mid-size rental inventories, corporate AV and fixed installs where a single wide-dispersion cabinet is preferred over a line array hang. Buyers searching for a used Martin Audio A55 for sale should treat the HF section and the rear connector plate as the two highest-risk areas, since these are where wear and moisture damage show up first on ex-rental stock.

Condition grading on second-hand professional audio is only meaningful if it is tied to a documented inspection. A Grade A designation should mean the cabinet is structurally sound with no cracks at the handle pockets or rigging points, grilles straight, drivers original or correctly matched, and the finish free of deep gouges. Ask for photographs of the rear panel showing the XLR / Speakon connectors, the HF diaphragm area with the horn removed if possible, and the woofer cone and surround. On the A55, cone sag and surround hardening are common on cabinets that have spent years in humid climates, so request a sweep test or impedance curve rather than relying on a visual grade alone. The same discipline applies to other components in a rental rack, so our Crown CM-310A used microphone buying guide shows how to document wear before committing to stock.

For distributors and system integrators building repeatable stock, consistency matters more than cosmetics. Confirm that both LF and HF drivers are the correct original types, that the crossover has not been bypassed or modified, and that the impedance reads close to 8 Ω on a meter. Rental companies should ask how the units were previously deployed — pole-mounted, flown, or used as fills — because flown cabinets accumulate different stress at the rigging inserts. If you are comparing this model against other boxes in the same class, browse the wider range of second hand PA speakers for sale to benchmark dispersion, weight and power handling before committing to a batch. Buyers weighing a single wide-dispersion cabinet against other options should also review the used JBL EON1500 for sale listing to compare format and coverage before deciding.

Logistics drive the real cost on a 38 kg cabinet. Air freight is rarely economical for full-range boxes at this weight, so most overseas buyers consolidate into sea shipments and should confirm pallet dimensions and stacking before booking. Ask for the year of manufacture and quantity available directly rather than assuming — these are quoted on request and should never be estimated. For buyers in the Middle East, Southeast Asia, Africa and South America, humidity and heat exposure during transit are the main threats, so specify sealed packing and desiccant where the route involves long ocean legs. For fixed installs where the A55 is being considered, our sistem PA rumah ibadah page outlines how a single wide-dispersion cabinet fits that kind of room.

A practical checklist before ordering: request a short video of each cabinet playing at moderate level, confirm connector type and condition, verify driver part numbers against the original specification, and get the seller to state the condition grade in writing with the inspection criteria used. Where a batch is being sourced, ask for matched pairs by driver condition rather than by serial sequence. Buyers who want to compare this unit with alternative second hand line array and point-source options can review category stock alongside the A55 listing, but the model number itself should always be confirmed on the quotation to avoid substitution. Integrators building a repeatable inventory can browse the full range of second hand pro audio gear to match the A55 with complementary cabinets and processing.

Questions about this unit or about shipping to your country? Contact us for condition photos, test results and a quote. The same inspection logic applies to amplification, and our used amplifier buying guide explains how condition notes should be documented for B2B buyers.

Questions about this unit or about shipping to your country? Contact us for condition photos, test results and a quote.