Andy Wehmeyer's advice on why a car images for one seat, how we hear direction, reflections and dispersion, with every point explained in plain English for beginners. Part 1 of a 20-part series.

Andy Wehmeyer's advice on aiming, door, pillar, kick and dash locations, stage size and widebanders, with every point explained in plain English for beginners. Part 2 of a 20-part series.

Andy Wehmeyer's advice on two-seat tuning, center channels, rear fill and upmixing, with every point explained in plain English for beginners. Part 3 of a 20-part series.

Andy Wehmeyer's advice on pods and back volumes, tweeter mounting and choosing drivers and system layout, with every point explained in plain English for beginners. Part 5 of a 20-part series.

Andy Wehmeyer's advice on Audiofrog's design choices, driver ratings and failures, tweeter protection and wiring, with every point explained in plain English for beginners. Part 6 of a 20-part series.

The Machete MLC-60 is Deaf Bonce's budget Lite component set: what Alphard claims for it, why the missing crossovers matter, which amplifiers suit it, and how it differs from the Machete Lite 60.

The Machete MFC-60 is a component set that includes crossovers: what's in the box, how much amplifier power Alphard recommends, and how it differs from the MFC-615, MLC-60, MFX-60 and Fight 60.

The Machete MFC-615 component set explained: its published figures, why the crossovers missing from its listed box matter, how to run it actively, and how it compares with the MFC-60, MLC-60 and MFX-60.

The Alpine DM-65C pairs a component layout with a published 92 dB sensitivity. What that suggests for head-unit power, how to add an amplifier and subwoofer later, and where the S2-S65C makes more sense.

The Hertz K 165 is Uno's 6.5-inch component set, with its crossover hidden in the tweeter wiring. Specs, what that simple crossover trades away, head-unit versus amplifier power, and the little owner feedback there is.

The Alpine SPJ-161CS is the most affordable Alpine component set we sell. Is it worth the extra over the SPJ-161C2 coaxial, where do surface-mount tweeters go, and what does Alpine leave unsaid?

Alpine's S-Series component set examined: woofer and tweeter mounting sizes, what in-line crossovers mean for tuning, head-unit vs amplifier power, how it compares with the R2-S65C and S2-S65, and what US owners report.

A 5-inch component set for cars that can't take 6.5-inch woofers: the Hertz DSK 130.3's specs, how it differs from the DSK 165.3 at the same price, amplifier and subwoofer advice, and why owner feedback is scarce.

The Alpine DP2-65C two-way set: soft-dome tweeter, in-line network and tweeter settings, woofer and tweeter mounting sizes, how it compares with Alpine's Type-R and Status two-ways, and its India MRP.

Can long-throw BassRev door woofers spare your boot from a subwoofer? We look at the Alpine BRV-S65C's figures, the OPTIM8 condition, tweeter placement and how it compares with the R2-S65C.

The Hertz DSK 165.3 puts its tweeter filters on the cables, so there is no separate crossover box to mount. Specs, head unit vs amplifier, what ten UK buyers rated it, and how it compares with the K 165 and CK 165.

The Alpine DP2-653 three-way set explained: drivers and mounting sizes, when the optional DP2-653NW passive network makes sense, active DSP pairing, how it compares with the R2-S653, and India MRP.

The Hertz MPK 165.3 is Mille Pro's 4-ohm two-way component set. We cover Hertz's official figures, what owners report, amplifier pairing, fitting it in an Indian car and how it compares with the 3-ohm MPK 165P.3.

The Hertz CPK 165 is the Cento Pro component set: pressed-paper woofers, 29 mm Tetolon tweeters and a three-step level switch. Specs, a side-by-side comparison with the Cento CK 165 from Hertz's data, amplifier advice and installation notes.

The Hertz MPK 165P.3 is the 3-ohm Mille Pro two-way. We set out exactly how it differs from the 4-ohm MPK 165.3 on Hertz's own figures, which amplifiers suit it, and what little owner feedback exists.