STATIE AMPLIFICATOR AUTO SONY XM-502X

STATIE  AMPLIFICATOR SONY  AUTO  XM-502X

in stare perfecta de functionare

pret 135 lei

NU ACCEPT SCHIMBURI !

Overview:

The Sony XM-502X amplifier is an older model from last year's (1998) line of equipment. It's looks and features is the predecessor to the xPlod line of equipment. This amplifier is more configurable than their other older equipment as it has separate gain/bass boost/crossover controls for each of it's two channels. It is capable of delivering 50W x 2, and 130W x 1 RMS. It is sufficient to drive a small set of coaxials or a small sub (8").

The amplifier has a bass-boost from 0 to +10dB @ 40 Hz on each output channel, and is continuously variable for both. It also has a selectable Hi/Lo Pass crossover which is continuously variable between 50 and 200 Hz for both channels, individually. There is also a separate gain control for both channels, and it features two LED level meters, one for each channel. All of this is housed in a recessed panel covered by a small clear plexi panel. Same style as what you see on the EQX series of xPlod amplifiers now put out by Sony. This amp is designed to drive standard loads between 2 and 4 Ohms, and I find it is most suitable for coaxials, a small sub, and rear-fill applications. It usually is not enough power for most component sets, which usually require at least 70+ watts / side.

Power protection circuitry for this amplifier is very simple, and it will simply shut down due to overheating, or other problems like a short in the speaker leads. It will not tell you, however, the cause of the problem, like the 2252HX model. It has a MOSFET power supply, although it does not have a full MOSFET output stage.

For connections, the amplifier has gold plated RCA inputs, and gold plated speaker output terminals (standard screw type). There is a set of full-range RCA outputs for linking further amplifiers, a feature which is also included in the new xPlod line of amplifiers. There is also gold plated screw terminals for Power, Ground and remote, which will each accept 8 gauge forked-spade terminals. There is no speaker level inputs on this amplifier, so it is not suitable for factory system upgrades, at least not without acquiring an aftermarket head unit.

In terms of looks, the amplifier hosts curves almost exactly like the Sony xPlod line you see today, except that it's a light metallic purple in color, and the plexi cover is a tint of purple as well. Dimensions and weight are almost identical to the XM-552HX in the xPlod line, it's successor.

Power Output:

Here is Sony's specifications regarding power output:

Power Input / Requirements:

The amplifier requires an operating voltage between 10.5V and 16V, and will draw roughly 10-15 amps of current at it's rated power driving a 4 Ohm load. You can expect a small current draw increase when driving lower impedance loads (running it in 2 Ohm stereo). The fuse on the amp is rated at 25A, but you can expect drawing maybe only 20 or so.

Power input terminals will fit 8 AWG wire, although 10 gauge is usually plenty for this amplifier. See our "Get a gauge" article in the tech section before you make your decisions! The remote input draws roughly 2-5mA of current, so that is a bonus when you are running a fairly high number of components strictly off of the head unit remote-turn on lead (which most have about 100-300 mA of current available). Although, I still recommend using a relay in this type of situation.

The RCA inputs will accept a signal between 0.2 to 2.3V Using a line driver (such as the Phoenix Gold PLD) or a High Volt headunit (e.g. Nakamichi, etc) is not recommended with this amplifier. Also 4V head units are not recommended for this application, as it will introduce clipping and distortion before the amplifier even reaches the final output stage at higher volumes. I personally ran this amplifier from my 4V rear output to drive rear fills, and it will only run cleanly up to about half of the gain settings, after that you are looking for trouble.

Speaker performance (subjective SQ):

This amplifier is rather substandard in driving speakers, it's noisy for one thing, and it doesn't have a lot of power to spare. Noise floor is extremely high, as with most Sony amplifiers I've dealt with, and your gains have to be set at about 1/3rd to eliminate all noise/hissing. This amplifier also clips pretty easily, so in reality it is only good for about 25-35 watts of the total 50/side it's rated for. I do not recommend running this amplifier to power front speakers, only rear fills, or a small 8" sub, where sound quality doesn't matter as much.

It's features are the main thing that boosts my confidence in the unit, as you can set separate gain, bass boost and crossover points for each channel, making it very configurable for proper imaging/staging - but this amplifier just simply doesn't have enough power or headroom for these applications. You might find some performance gain out of your rear fills by using these features.

Rating: 3.5 (out of 10).

Subwoofer performance (Power / Control):

As with most Sony amplifiers I've dealt with, this amp is much better suited for driving a small subwoofer than a set of speakers (with rear-fill being the exception). It has enough power to adequately push a small 8" sub.

As far as cone control, and sound quality performance - this is a small ghetto amp. Don't go into the competition ring running this if you want to score any good points. I found it rather sloppy and it's distortion is unnervingly high for my tastes. This might be less noticeable in a ported or bandpass enclosure, where the acoustics of the enclosure itself could hide these factors. Trunk applications would hide this as well in most cases, but remember that if you want any bass at all with an 8" in the trunk, you'd better port it into the cab or something similar.

Overall, this is not competition or high end material we're dealing with, it's simply lower-middle line equipment. Remember that if you're thinking about buying this unit used and expecting top quality bass performance.