Instruct: Classify the given review into positive or negative sentiment.
Query: Wrong specs

Based on the product description that listed the frequency response of this driver at 100 - 20000 Hertz, I bought two of these drivers. I built little cabinets for them and tried them out on my home theater receiver. It sounded rather mediocre, so I got suspicious and did a little research. The actual frequency response of these drivers as listed in Parts Expresses' catalog is 63 - 12000 Hertz. The price is right but be aware that the product description is erroneous before purchasing.