Chris Eriksen
Stunt Coordinator
- Joined
- Aug 10, 1999
- Messages
- 85
Hello Everyone,
I have an unusual DIY question. Due to WAF constraints, I am thinking about building my own in-wall speakers for my HT room. My question is on the suitability of drivers for this application. I have a set of 8 Dynaudio 17w75's left over from a previous project, and I would like to make use of these drivers to build six or seven identical speakers. They seem to model well in an IB configuration, but I would guess that I am overlooking something. Here are the T-S parameters for the Dynaudio 17w75:
Vas 18.8 L
Fs 39 Hz
Qts 0.74
Qms 2.18
Qes 1.12
Pmax 150 W rms
lin. excursion 5.5 mm
max. excursion (P-P) 19 mm
Sd 120 cm^2
Mms 15 g
B*L 4.3 Tm
Le (1 kHz) 0.45 mH
Sens 89 dB
I guess my primary concern is the limited xmax of these drivers. If they are constrained to playing 80 Hz and up, will this be an issue? They will see aproximately 80-110 wpc, depending on amplifier selection.
My other option is to use small sealed enclosures, probably ~12 L, in conjunction with Dynaudio Variovents. This is less desireable for the wife, but I will do it if the IB configuration is a significant problem. However, the trade-off will likely be a smaller enclosure for the planned DIY sub...
Thank you in advance for any advice you can offer.
-Chris
I have an unusual DIY question. Due to WAF constraints, I am thinking about building my own in-wall speakers for my HT room. My question is on the suitability of drivers for this application. I have a set of 8 Dynaudio 17w75's left over from a previous project, and I would like to make use of these drivers to build six or seven identical speakers. They seem to model well in an IB configuration, but I would guess that I am overlooking something. Here are the T-S parameters for the Dynaudio 17w75:
Vas 18.8 L
Fs 39 Hz
Qts 0.74
Qms 2.18
Qes 1.12
Pmax 150 W rms
lin. excursion 5.5 mm
max. excursion (P-P) 19 mm
Sd 120 cm^2
Mms 15 g
B*L 4.3 Tm
Le (1 kHz) 0.45 mH
Sens 89 dB
I guess my primary concern is the limited xmax of these drivers. If they are constrained to playing 80 Hz and up, will this be an issue? They will see aproximately 80-110 wpc, depending on amplifier selection.
My other option is to use small sealed enclosures, probably ~12 L, in conjunction with Dynaudio Variovents. This is less desireable for the wife, but I will do it if the IB configuration is a significant problem. However, the trade-off will likely be a smaller enclosure for the planned DIY sub...
Thank you in advance for any advice you can offer.
-Chris