Check the listing for details. Memphis Audio PRX27 Power Reference Series 2.75" Full Range Speakers - Pair. Condition: New. Listed at 49.95 USD. Memphis Audio PRX27 Power Reference Series 2.75" Full Range Speakers - PairOur best selling line of speakers for over 20 years has continued to evolve and improve into one of the most reliable high performing speakers in the audio industry. This high performance durable design allows us to back PR speakers with one of the best warranties in the business when installed by an authorized dealer. When you need a serious audio upgrade for your factory system, Power Reference sets the standard. Power Reference speakers represent excellent sound and quality in a full range of sizes to fit almost any factory speaker location. These features make Power Reference speakers the perfect solution for most vehicles looking for a solid audio upgrade. These speakers are extremely reliabl.