Conversion before using the equipment: Host Pioneer DEH-P1; Amplifier: Mai Gu 4 * 100W; front speakers: Pioneer C-130R; after the speaker: Alpine 694A.

Modification purposes: Request a purely vocal, violin, piano, Serenade of the class of work, there must be a clear soft treble, sweet tenor, strong clear bass ... but little weight in my years of playing home hi-fi experience to LS3/5A as a reference sound quality, converted into at least 8-9 to reach the former level ... This is a 6-inch speaker to change the front door speaker base, with the production of MDF and polished smooth with a time of day, let alone a long time, well polished after completion will affect the appearance.

This is behind the Alpine 649A speakers, because I do not pursue strong bass, did not intend to install the subwoofer, so this modification did not change position, but the original dual-tone input, then only instead of bass, as the front car speaker added . . . . .

This is reinforced and made noise after the front door, all the insulation materials used in Germany Wu Erde, open the lower left is the new speaker position, the original speaker location, and other voids with fiberboard closed (on the gong wire fixed to facilitate the maintenance and repair), then put on the surface across the insulation material.

This is what I used in the original front door speakers Pioneer C-130R set to change in the back door of the complete graph, in fact, this speaker's sound quality is good, but I ask too special, it had to stoop a price of about 1,200 yuan ... .

Behind the 694A speaker, but also the most controversial practice, the usual conversion shop will say not enough bass, but I am concerned, the bass is needed is quality, not quantity. Price 890 (wholesale) around 1200 (retail).

This is the front door after the photo, speakers are KEF KER 160B, matching KEF KER 23 treble treble is king, KEF is a British financial heat is on name of plant, but unfortunately the factory car audio product was discontinued two years ago, I find several finally secured, warm sweet sound effects, the price 4XXX Dayuan.

This is the most expensive part of the conversion process after --- trunk. Top left of the box is transparent in front of two pro speaker crossover, the lower left is the UK GENESIS amplifier, Model AUL MONO 2 * 100W, the brand is super fever brand, the price in the UK is ￡ 500, plus customs duties and dealer profits, how much money you do the math right, the middle is a large capacitance, the right is the British MACROM 4 * 100W power amplifier, the price more than 3500 yuan, pushed back two pairs of speakers.