Hello everybody, nice to be part of your group.👍🙂
So I have just started my first build which consists of 2 Reckhorn D165 6.5" woofers. So far my calculations were way off going by Reckhorns original volume recommendation, kindly pointed out by Graham from this forum.
So my new calculations, but bear in mind this isn't a dedicated subwoofer, it's part of a 3 way design are as follows:
7 litres, with a 40mm diameter port with a length of 240mms with a tune of 42hz, I think.🤔
What I'm really needing help with is these aren't dedicated subwoofers and are being crossed over at 700hz so I need some assistance to see if the frequency curves is correct for the range I need without dropping too soon. Only I don't have a computer available to use WinSL or the like.🤦🏻*♂️
If someone could maybe model the graph for me that would be great, and also what are the opinions on the box volume and port length?
Sorry, I'm a total newbie, although I'm reading lots and learning fast thanks to fellow enthusiasts.🙂
The Reckhorn D165 parameters are:
Le=1.195mH
FS=28Hz
QMS=5.69
QES=0.32
QTS=0.30
SD=132qcm
VAS=17litres
Effiency 83dB 1w/1m
Impedance 4 Ohm's
Cone diameter 165mm
Thanks in advance.👍🙂
So I have just started my first build which consists of 2 Reckhorn D165 6.5" woofers. So far my calculations were way off going by Reckhorns original volume recommendation, kindly pointed out by Graham from this forum.
So my new calculations, but bear in mind this isn't a dedicated subwoofer, it's part of a 3 way design are as follows:
7 litres, with a 40mm diameter port with a length of 240mms with a tune of 42hz, I think.🤔
What I'm really needing help with is these aren't dedicated subwoofers and are being crossed over at 700hz so I need some assistance to see if the frequency curves is correct for the range I need without dropping too soon. Only I don't have a computer available to use WinSL or the like.🤦🏻*♂️
If someone could maybe model the graph for me that would be great, and also what are the opinions on the box volume and port length?
Sorry, I'm a total newbie, although I'm reading lots and learning fast thanks to fellow enthusiasts.🙂
The Reckhorn D165 parameters are:
Le=1.195mH
FS=28Hz
QMS=5.69
QES=0.32
QTS=0.30
SD=132qcm
VAS=17litres
Effiency 83dB 1w/1m
Impedance 4 Ohm's
Cone diameter 165mm
Thanks in advance.👍🙂
Hi,
I have used several times this great subwoofer in many configurations :
- Sealed Box alignment (4,5 L with 6 dB boost at 50 Hz - Q = 2) or with a series capacitor of 600 uF)
- Bass Reflex (7 L => f3 = 42 Hz or 12 L => 35 Hz
- With Passive Radiators.
One advice : don't use the D-165 above 200 Hz.
It's a true subwoofer, with high inductance, a heavy cone, not midwoofer.
But as a subwoofer, this is an amazing transducer.
I have used several times this great subwoofer in many configurations :
- Sealed Box alignment (4,5 L with 6 dB boost at 50 Hz - Q = 2) or with a series capacitor of 600 uF)
- Bass Reflex (7 L => f3 = 42 Hz or 12 L => 35 Hz
- With Passive Radiators.
One advice : don't use the D-165 above 200 Hz.
It's a true subwoofer, with high inductance, a heavy cone, not midwoofer.
But as a subwoofer, this is an amazing transducer.
