The RTL series were developed using TDL's ‘reflex transmission line system’, acoustics developed to deliver optimum sound within a smaller cabinet.
The new line of speaker was smaller and more affordable than the previous beefy £1000 speakers, but without compromising on sound quality.
The RTL2 was a compact floor standing speaker that had the same footprint as bookshelf speaker; it offered a smooth uncoloured output that was notably free from emphasis in any particular part of the frequency spectrum.