i attached these to 6x12 horn throats,put them in mid size boxes with 10 inch woofers and and domed tweeters ,crossed them over at 750 HZ and 5000 HZ with attenuated at -7 db mid and -4 db tweeters ,these were supposed to be for use on my deck ,but while i'm not done tweaking them i like them so much ,and they sound so good i have them in my entertainment system as my main speakers ,they sound awesome,

By far the best midrange driver for the price, quality, and performance. I highly recommend a DSP to partner with these. I am running 4 of the D275Ph-S paired with 6 of the 8MR600X-NDY. Amazing sound quality with performance beyond my expectations. Highly recommend.

I love this horn for midrange! I'm using them in my doors with the WGP14-25 waveguide so it can play down to 600hz (the WG11-25 only lets you play to 1200hz). I've tried the WG270Ph and D270Ph-S and for my 4 way front stage the D275Ph-S was the best for it's fuller midrange sound and clarity. The WG270Ph sounded a bit similar but was distorting with the amount of power I was sending to them and the D270Ph-S was more of a mids/highs horn which wasn't what I was needing from a midrange horn. Overall 10/10 would recommend for a 1" mid range driver!

Is good quality sound clear

Good product good price! I recommend for anyone who wants clearer music.