Модель
Sundown Audio X V2 6.5 S4
Оценка
DIAM
FS(Гц)
VAS(л)
QTS
PWR(Вт)
SPL(Дб)
IMP(Ом)
доступ
+156 P-Bass
2 Feb 2021, 16:21
Оформление
Фазоинв
+156 P-Bass
17 Jan 2021, 18:20
Описание
I designed this box for this speaker using SBL's WEB interface, stock speaker parameters from the local database, stock settings, simple mode. There is a huge peak on the transfer function graph around 22-23Hz with a cabin gain which is OK for a small car - this is the reason why it will be windy in a small car. The impedance peak at higher frequencies is at 60Hz, so it means that this sub is effective up to the official sub bass range's top frequency, and the Fb is just a little bit higher like the F3.
Оформление
Фазоинв
+156 P-Bass
17 Jan 2021, 19:07
Описание
I added +1 speaker to this box: https://speakerboxlite.com/project-info/15231/tab-info . That means, if the box is physically the same, it means that Vb decreases, Fb increases, etc... At this box the peak on the transfer function graph is at the same point - less by 2.9 dB, so the sub is just 0.1 dB louder at the peak, but up to 3 dB louder at high frequecies (SPL graphs). Vent air velocity is still OK, group delay is less. So, practically this box with 2 speakers will be same windy and more "musical".
Оформление
Фазоинв
+156 P-Bass
3 Aug 2020, 12:31
Описание
In this project I used the woofer's stock parameters from SBL database. This bandpass box have negative ratio, and is a combination of the "Max flat delay Bessel - BL2" closed box's Vb for the closed chamber + a ported chamber with a unique Vb and Fb to have: F3low = 30 Hz, and not passing over the dashed line in the group delay graph. This gives a little peak at low or middle 30ish frequencies at any usable cabin gain, and ideal power handling on RMS power. Watch out: woofer's basket in closed chamber!
Оформление
Бандпасс 4го порядка
Описание
This is a vented box in which this speaker (using it's stock parameters from the local database) have as linear as possible transfer function graph at 60Hz/12dB cabin gain (interior transfer function), also to be as widerange as it is possible, and low vent air velocity. This gived an active sound range between 31 and 83 Hz (impedance peaks), then not so big but almost equal SPL on the whole active sound range, and the dashed line in the group delay graph is overpassed just only a little bit at 30ish Hzs.