gres
Full Member level 4
HF40 is a 18” classic tube with 40dm^2 outlet.
Main destination for that box is outside, where each decibel is gold worth. That’s why construction consist possibility biggest SPL average from as small at is possible box. There’s no compromise, as in cheapest that kind tube constructions- this box play well from lowest registers. Those lowest register it play as well as HF30, but after reach 50Hz SPL plays as a real race engine and can get 107-108dB from 1W at lowtones range.
In audio monitoring, box very clear shows when bass start to kick. It’s very nice effect especially in rock sounds. Of course after rectify by processor sound is more natural, but still that amazing impulse calculating makes impression compare to b-r systems, bans pass or even HF30.
Of course nothing for free: to reach good bass, you need to agree with big capacity – 600l and weight 70kg. As for that capacity 70kg is not very much, it’s because I used light plywood with reforce system.
Of course system can be use also inside, but not everyone can allow to cover stage or such high foot-pace. Anyway my tests show that room – place and good tube, like each other much.
Most important parameters:
1000W RMS
in this kind of boxes, range is taken from processor
mechanic resistance > 1600W from about 30Hz.
Diagram – 1W/1m for two boxes in semi- space.
( reference with +/- 1dB exactitude precision cause I don’t have time to calibrate.
Main destination for that box is outside, where each decibel is gold worth. That’s why construction consist possibility biggest SPL average from as small at is possible box. There’s no compromise, as in cheapest that kind tube constructions- this box play well from lowest registers. Those lowest register it play as well as HF30, but after reach 50Hz SPL plays as a real race engine and can get 107-108dB from 1W at lowtones range.
In audio monitoring, box very clear shows when bass start to kick. It’s very nice effect especially in rock sounds. Of course after rectify by processor sound is more natural, but still that amazing impulse calculating makes impression compare to b-r systems, bans pass or even HF30.
Of course nothing for free: to reach good bass, you need to agree with big capacity – 600l and weight 70kg. As for that capacity 70kg is not very much, it’s because I used light plywood with reforce system.
Of course system can be use also inside, but not everyone can allow to cover stage or such high foot-pace. Anyway my tests show that room – place and good tube, like each other much.
Most important parameters:
1000W RMS
in this kind of boxes, range is taken from processor
mechanic resistance > 1600W from about 30Hz.
Diagram – 1W/1m for two boxes in semi- space.
( reference with +/- 1dB exactitude precision cause I don’t have time to calibrate.