Skytec active speakers 600w grow
Internet prodaja. The line output allows daisy chaining of additional speakers. The durable moulded light weight enclosure is complemented with a tough metal grille Cena: Unlimited flexibility in placement due to the BT-technology. This compact but high-quality speaker features line input, input for microphone and guitar.
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Vonyx SWA15 PA Powered Subwoofer 15 inch 600W
Skytec is cheap rubbish made in China for kids who are wannabe DJs but have little money. This is not quality — I had to repair this amplifier because of a fundamental defect in the engineering design.
These are fine for background music, say in a pub. I bought it purely on price, I wanted something basic for parties of about people. Skytec s are sold as W and the manual claims W output. They are absolutely away with the fairies on that, to the extent they should be done under the Trade Descriptions Act. I measured 80V p-p, which is about 28Vrms. Do that for any length of time and it will blow because of the inadequate heatsinking and bad thermal design. All sound components are co-ordinated carefully and captivate their longevity.
The high build quality makes it the ideal amplifier for tours and gigging. For use on stages, for DJs, monitoring, parties and conferences. It worked OK for me for a couple of years, but then I let someone use it unsupervised for live music. Which brings me to the first warning. Dynamic range — live music has a higher peak to mean ratio than recorded music. It can be seen that in the Darlington configuration, there are two emitter-base junctions for each output device.
Since each has its own thermal characteristic a fall of about 2mV per degree C , the combination can be difficult to make thermally stable. In addition, the gain of transistors often increases as they get hotter, thus compounding the problem. If stability is not maintained, the amplifier may be subject to thermal runaway, where after a certain output device temperature is reached, the continued fall of Vbe causes even more quiescent current to flow, causing the temperature to rise further, and so on.
I got to find that out the hard way. This is designed for thermal runaway and the only thing standing between you and a blown output stage is the hope the heatsink and the fan keep the temperature rise down. You can get a little bit of an idea of the architecture from this thread and this PDF of a similar noname PA amp which gives a rough idea of the architecture on the output.
The 5A fuse saved the other passive components. Lift the PA module out, snip the duff transistor legs to save the PCB while desoldering the pins one at a time. I also compared the quiescent current 10mA at V with the good side, which was the same, so I figured the VBE multiplier was still set about right. I also went round and tightened the output transistors a tad. I wonder if this also led to the early demise. Having fixed it I started to test it looking for why it blew.
It was the cheapest way of getting a power resistor up to the job. I then dunk the resistors in a pan of water. Running both channels full tilt at Wpc for two minutes the transistors get up to about 50C at the hottest part of the plastic case. And got the transistor cases up to C. Sadly I battle tested the inadequacy of the design a second time. Five minutes after running the second test, after I had brought the signal down to 0, I was greeted with this, telling me the right hand channel has gone DC, presumably thermal runaway again.
It is the same rubbish but there are a few things you can do before it burns out. Solder out the VBE multiplier and glue it to the heatsink.
Now, carefully check that all the transistors are properly mounted, with conductive paste and torqued. This will go a long way to insure stability at full load. If you have a better fan replace it, and use a NTC for startup and simple fan temp control. Hello, Richard! I just got a Skytec amp to repair, did you happen to have the wiring diagram lying around?
I would be happy to get something to look up. Love greetings. This thread is helpful. Your email address will not be published. Notify me of follow-up comments by email. Notify me of new posts by email. Skip to content tl;dr — to fix the problem throw the Skytec Pro away and buy something better before the Skytec blows your speakers again.
Which brings me to the first warning Do NOT use the Skytec for live music unless you are aware of the risks you are taking! After all, the promotional blurb says this: The high build quality makes it the ideal amplifier for tours and gigging.
How does the Skytec PRO do thermal stability? On a wing and a prayer. You can get a little bit of an idea of the architecture from this thread and this PDF of a similar noname PA amp which gives a rough idea of the architecture on the output Schematic someone has traced out of a similar piece of junk.
Skytec Pro — Avoid. Just say no. Love greetings mike. I walked away from this. Life is too short…. Leave a Reply Cancel reply Your email address will not be published. Next Next post: Sparrows of Ipswich survey results.
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With powerful watts of power to 4 ohms, USB flash drive and SD card slot and an FM tuner, the amplifier leaves nothing to be desired. To this end, the device from Skytec combines the power of a PA amplifier with the connection spectrum of a home amplifier, and impresses with many connectivity options for playing external MP3 files. The three rear stereo RCA inputs and the front 3. The amp is a visual highlight thanks to the illuminated LED front panel in amber, which creates a stylish appearance, especially in the dark.
Wireless microphones for sale
Turbosound Speakers. Buyer's Guides. In stock. The Turbosound iP is a compact speaker with two subwoofers and 4 tops, stacked in line-array configuration for optimal spread. This neat column speaker also has the added intellect of a DSP chip. Not in Stock Order now and receive delivery within approx. Not in Stock Approx. If you complete your order, in most cases, you'll be able to select partial delivery. By selecting partial delivery, products that are not in stock shall be packed and shipped as soon as they arrive in stock.
SPL 300 VHF PA Amplifier Set
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Turbosound Speakers
JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser. It is a complete plug and play unit, so can be connected directly to your music source and is ready to go. This pair of active PA speakers contain a 2-way bass reflex speaker system which is protected by the impact resistant ABS housing. This product has line and mic inputs, bass and treble controls and are equipped with integrated carry handles.
PA Speakerbox 6 inch 150W (2 pcs)
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JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser. This active PA speaker is a complete plug and play unit, so can be connected directly to your music source and is ready to go. This active speaker from Skytec offers a 2-way bass reflex speaker system which is protected by the impact resistant ABS housing.
Specialized Shop Tools. Our selection is sure to have the right fit for your next project. Category: Exotic Woofers. Screw Erin, contribute to MY nfs fund. An 8" driver can't do this, and in a 3 way will generally go anywhere from hz. Sizes: 10", 12", and 15" Dual 2 or 4 ohm Components.
Visit DJ City or Tronios web site for more information. I thought these had been discontinued, then almost a year later, they are available again. If one works on the premise that these SPJA units are about W RMS each, they are still reasonable value for money assuming they arrive intact ;- If looking to purchase as 'used', make sure the speaker shell doesn't have any nasty cracks around the handles.
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