"The term dipole derives from the fact that the polar response consists of two lobes, with equal radiation forwards and backwards, and non perpendicular to the axis. This can be useful in reducing the stimulation of resonant room modes at low frequencies. It also results in high frequencies being reflected from any rear wall, which can enhance the naturalness of the sound in typical listening rooms by creating more diffuse reverberation, though in theory it could detract from stereo localization. "
http://www.mh-audio.nl/ob.asp
stvarno...ne vidim poantu na višim frekvencijama za back to back tweeterom,uostalom zašto se onda pokušavaju smanjiti refleksije u sobi s akustičkim tretmanima(ne bass trape)?
zar ne čine najveću razliku u zvuku dipola niži tonovi i manjak rezonancija zbog kutije i sobe ?
+ Reverberation is the persistence of sound in a particular space after the original sound is produced.[1] A reverberation, or reverb, is created when a sound is produced in an enclosed space causing a large number of echoes to build up and then slowly decay as the sound is absorbed by the walls and air.[2] This is most noticeable when the sound source stops but the reflections continue, decreasing in amplitude, until they can no longer be heard.(wikipedia za reverberation)
rasipanje reverberacije khm.... radije bih pin point stereo sliku. nije li to kontra intuitivno sa tweeterom onda?
imho best buy - bass:
http://www.europe-audio.com/Product.asp?Product_ID=1969
visaton ws25e - qts=1
i FR driver
http://www.europe-audio.com/Product.asp?Product_ID=7245
nekakve su nepravilnosti u cijenama... isti ti modeli u drugim veličinama su puno skuplji naspram konkurencije.
sp-165x košta kao i bg17 - 15tak eur bez pdv , dok sp-200x 43 eur naspram bg20 25eur, plus monacor ima bolji FR, sad nisam gledao TS parametre...ali...
tweeter: http://www.europe-audio.com/Product.asp?Product_ID=7778
prema zaphovim testiranjima, potpuno upotrebljiv.