Speakers to enrich our leisure life, but often the price of the brand of what high-end audio, always let's elusive; used audio has become the choice of audio enthusiasts. Can be harvested in the purchase of these second-hand speaker, the Shanghai Jie Electrical Experts offer the following suggestions.
The weight and dimensions of the speakers is the selection you want.
Box for damage and cracks: exterior veneer is symmetrical, with or without peeling off; box seams with or without glue marks and, if so, the speaker has patched.
Whether the box back nameplate label specification, the model and the actual are the same, with or without misspelled English words, to identify the origin, the relevant information on the nameplate should be exactly the same you know.
Wiring terminals are obvious rust. Verify the identity of the speakers I purchased about five years, despite the use of history, but the terminals do not rust, and the the terminal manufacturing process of the authentic original speakers are generally guaranteed not to be easily oxidized corrosion.
The most critical is the identification of the speaker unit. From the front speakers on the unit and advertising color the unit look exactly the same; unit is in good condition, with or without degumming cone cracks, pressing his hand cone, voice coil and magnet without jamming or friction this audition an open sound glance.
All fastening screws on the box should be carefully inspected, with or without metal screwdriver twist scars. Best to convince the shopkeeper, you open the box to the dorsal junction box, carefully check the internal details. You should be careful to tighten the junction box down, gently pry open remove, look divider or without repair traces, components with or without replacement (mainly to see the divider board any special irregular new solder joints), left and right divider on the components are the same, above, if there is a special English mark (Model, manufacture); see internal unit lead, whether solid and compact, the line will have a positive, negative distinction mark; built-in sound-absorbing cotton is pure enough amount; to light is a good place to poke absorbing cotton to see the back of the unit marked Model is consistent with the data.
In fact, for the speaker lovers, more than usual stroll hand electrical appliances market, or at a lower price to buy a pair of used authentic original, good sound quality European and American speakers. Buy second-hand speaker also has the benefit to its itself are already burning through the speakers, it repurchased no longer need to carry out maintenance, can be applied.