Any suggestion or preference?


Size Brand Series Model RMS W Peak W Sens dB Freq Freq Imp Ohm

6x8c Infinity Kappa 680.7CS 90 270 94 45 25k 2
6x8 Infinity Kappa 682.7CF 100 300 94 40 25k 2

6x8 Kenwood Excelon KFC-X680 56 280 91 35 25k 4

6x8 Pioneer REV TS-D801P 60 260 91 27 32k 4

6x8c JBL Grand Touring GTO8607C 70 210 92 55 21k 2
6x8 JBL Grand Touring GTO8627 60 180 92 50 21k 2
6x8 JBL Power P8652 75 210 90 40 23k 4
6.5c JBL Power P650c 90 270 90 45 23k 4

5x7 Polk Momo MMC570 80 180 90 40 25k 4
5x7 Polk db db570 60 180 93 52 22k 4
6.5c Polk MMC 125 250 90 43 25k 4

5x7 Alpine Type-R SPR-57C 100 300
5x7 Alpine Type-S SPS-57C2 50 250 92 35 30k 4

6x8c MB Quart Reference RCE 268 60 130 90 38 32k 4
6.5c MB Quart
Premier PCE 216 60 130 90 38 32k 4

There are other options as well:
JL Audio
Memphis
Kicker
MTX
etc...

My recommendation would be to purchase a conventional 6.5" speaker, with easy-to-find 6.5-6x8 adapter plate. Sound radiates in a circular pattern, not to mention the fact that 6x8 and other "odd sizes" tend to be afterthoughts in a lineup.

The mounting holes for a 6x8 speaker line up with the mounting holes for a 5x7 speaker, which are more common and usually cost a little less money. I personally replaced my 6x8 ford speakers with SX85 speakers from Boston Acoustics.

My recommendation would be to purchase a conventional 6.5" speaker, with easy-to-find 6.5-6x8 adapter plate. Sound radiates in a circular pattern, not to mention the fact that 6x8 and other "odd sizes" tend to be afterthoughts in a lineup.

I would second this option.