How to pair up a Sub and Amp

So, first things first, we need to find out the specifications of the car subwoofer you're interested in. The key specification you'll be looking for is RMS power. Basically the RMS power is a rating of the ability of the subwoofer to handle a continuous power signal. Don’t pay too much attention to the peak power as this is not too important to us, this is often a way of marketing the subwoofer to sound better than it actually is.

Next step, find a car amplifier that has sufficient outputs for your subwoofer(s). For example, if you're going to power one subwoofer, a mono (single channel) amplifier or a 2-channel amplifier that can be bridged to a single channel is perfect. For two subwoofers, a 2-channel amplifier or a 4-channel that can be bridged to 2 channels is appropriate. However to get the best performance from your subwoofer (budget pending of course) I would recommend having an amp for every sub!

Ensure that the power output of the amplifier is a good match for the sub(s). As in Step 1, examine the RMS power output of the amplifier, not peak power. Match the power output as close to the RMS power, it doesn’t have to be exact, and it is always better to try and give the subwoofer more power rather than not enough, especially if you like your music loud!

Look for options that will make your amplifier work better with a subwoofer. These include subsonic filters, which eliminate distorting ultra-low tones, and variable low-pass filters, that let you fine-tune the signal coming in from your car stereo. If you like extra "thump" in your tunes, look for a bass boost feature as well.

It is also worth pointing out that if you over power a subwoofer, or of course under power, you will run the risk of damaging your subwoofer, and most likely voiding your warranty! 

Taxi CCTV Offers Vital Evidence

Evidence Gained From Taxi CCTV

Revealed in Brighton’s local newspaper The Argus, CCTV cameras in taxis have been used to provide evidence 18 times, including in a hit and run case and for footage in a firearm attack.

Initially Brighton and Hove City Council were criticised for ordering that cameras had to be installed in private hire and Hackney carriages in 2010. But six months after they were made mandatory in April 2012 they have proved useful, despite only 72% of Hackney carriage and 54% of private hire drivers agreeing with them.

At the end of June this year, a taxi was shot at with an air rifle after a gang of men refused to pay and the driver was also threatened with a knife – all of which was caught on camera.

Taxi CCTV also captured a driver being hit with a hammer at the end of May, as well as numerous non-payments and car crashes.

At the end of July this year a group of young people ran off without paying. The driver grabbed hold of one of them, but his friends ran back and started throwing stones at the driver.

The council admitted that “anxieties continue to be expressed within the trade around the principal of installing CCTV and some of the detail”.

A Brighton and Hove City Council spokeswoman said: “The presence of CCTV in taxis is designed to keep both passengers and taxi drivers safe. The indications are so far that it is proving effective and we will continue to keep it under review.

“CCTV can be an important means of detecting and deterring crime and the council only looks at a relevant piece of footage if there has been a reported incident to a passenger or driver, and it must follow strict guidelines set out by the Information Commissioner.”

http://www.youtube.com/watch?feature=player_embedded&v=NTMxHZBjtMs

Autosounds helps cyclists safety...

Crossrail contract helps Autosounds progress within the vehicle safety sector...

Back in February 2012 one in ten lorries were turned away from Europe’s biggest construction project for failing safety standards imposed to protect cyclists.

Crossrail inspectors refused entry to 31 of 253 vehicles bringing building materials to sites along the planned £15 billion commuter railway.

 

A freight industry source said that hauliers were being turned away fully laden because their lorries had not been fitted with proximity sensors, alarms, extra mirrors or safety bars to guard against fatal collisions with cyclists and other road users. 

"It's great for Autosounds as a company who can begin to diversify into areas that require specialist auto electrical knowledge for the installation of safety equipment. We will continue to seek work in this sector and have all of the relevant suppliers in place to enable us to provide our customers with side warning alarms, left hand turn speakers, vehicle cctv and reverse camera systems which all goes a long way to provide even more safety for cyclists on the UK's roads." 


About Crossrail:

Crossrail will run 118 km from Maidenhead and Heathrow in the west, through new twin-bore 21 km tunnels under central London to Shenfield and Abbey Wood in the east. It will bring an additional 1.5 million people within 45 minutes commuting distance of London's key business districts.
When Crossrail opens it will increase London's rail-based transport network capacity by 10%, supporting regeneration across the capital, helping to secure London's position as a world leading financial centre, and cutting journey times across the city.
Crossrail will deliver substantial economic benefits for all of London and the South East. Latest economic forecasts suggest that Crossrail will add £42bn to the economy. Previous estimates were that Crossrail would deliver up to a £36bn boost to the UK economy.
Up to 14,000 people will be employed at the peak of construction in 2013/2015.
Crossrail is being delivered by Crossrail Limited (CRL). CRL is a wholly owned subsidiary of Transport for London. Crossrail is jointly sponsored by the Department for Transport and Transport for London.