worldentropy

Gents .. Here's my 2p worth: Upper/lower wishbone bushes on the Lexus in general are replaceable, and they are not an integral part of the wishbone assembly. This is what the official service manuals show on the exploded views. I'm yet, however, to source a good, and I mean good, supplier of Japanese car parts that stocks the entire range of parts. And don't tell me about japarts.com, because they are as useless (usual disclaimer about opinions being my own and the whole 9 yards). So .. is it time to start a business supplying a full range of jap parts ? perhaps, and I am seriously contemplating it. A warehouse that can supply anything Japanese and Korean, at affordable prices. Any way .. back to the bushes issue. If you are really stuck, let me know. I can get them £50 a set for both uppper and lower ones. One more thing: if I were any of you, I would not buy anything suspension second hand, much less wishbones, and even much less bushes. This is rubber, and wear and tear would have had it's toll no matter what; add to that the almost 100% guarantee that the item would have been persuaded out with a hammer, and the rest is history. ta .. worldentropy

Chaps, The touch screens on the Lexus, akin with many cars, is capacitive rather than resistive. In plain English, this means that the screen locates the touch of your finger(s) based on capacitance change under the touched area ...etc. Like everything, this has advantages and disadvantages, amongst the latter being a tendancy to stray-of calibration, and that's when it gets a little awkward. It is possible to force the screen to re-calibrate through the diags socket of the main ECU, and this is not difficult to do if you have the CAN/OBD II (depending on model) computer + software. If you don't, refer it to someone who has, and it's a 10 mins job max. Do that before spending hundreds on a new screen. Just my 2-pennies worth. Cheers .. worldentropy.

Hiya Sorted .. General tips: make sure that your gain is set correctly (per one of the earlier replies). This is the number one killer of amps. Also make sure that there is good impedance matching all round, i.e. make sure that the output from your driver amp (one preceding the sub-amp) is impedance-matched to the output of your sub-amp. This is either a standard 600/120 Ohm drive or, on rare occasions, a standard 4 or 8 Ohm. That is imperative. With standard equipment, impedance matching should not be an issue. Just make sure that you use the right outputs into the right inputs. Also ensure that you cable neatly, correctly and using good quality speaker cable where necessary. Remember to ensure that all your speakers are installed with correct polarity, i.e. all your +ve terminals from speakers are feeding into +ve outputs from our amps, all way round. Finally, ensure that your overall impedance of all connected speaker networks (e.g. if you are running a cross-over arrangement, with say a tweeter, a driver and a (sub)-woofer arrangement) is not below the minimum stated for your amp (usually 8-Ohm, 4-Ohm (common) or 2-Ohm (rare)). Another point to check is, offcourse, earthing, like DJ mentioned. To give you an idea of how important this is, very good earthing is a start. Excellent earthing is how things should be. Use good quality earth braids, to solid, chassis earthing points. That said, I don't quite agree that either a clipped signal or earthing is an issue for overheating. Clipping occurs when amp inputs are being over-driven, and in that case, clipper and Zobel networks kick into action to protect your speakers rather than the amp. Some of the above will cause your amp to overheat, most importantly of all impedance matching on amp in/out and to your speakers and speaker networks if applicable. One more thing .. I'm quite surprised that an Alpine amp would overheat due to impedance mismatch or indeed any of the issues above; I'd have thought that for the premium one pays for those toys that Alpine would have had the decency to implement simple clipping/matching/overload protection. Hope this helps. Happy listening !! Cheers, Ahmed.