New Subwoofer project...

[RuiSilva]

Hello guys,

So now that I'm going for the design posted in the previous thread, I want to know what kind of plate amplifier should I buy... I live in Portugal and a can't find places with this kind of products... I was thinking about the Hypex DS 2.0 here are some specs...
DS2.0
Continuous output power (8 Ohm) 100 Watts
Continuous output power (4 Ohm)
Gain (RCA input)
Gain (High level input)
Input sensitivity (RCA input)
Input sensitivity (High level input
175 Watts
46dB
16,5dB
0,13Vrms
4Vrms
Subsonic-filter 12Hz / -3dB, 24dB/Octave
Phase 0° - 180°, 180° - 360°
Crossover frequency subwoofer 30Hz - 120Hz, 18dB/Octave
Bassboost 20Hz - 50Hz
Bassboost level 0dB - +6dB
Damping factor 500
Protection Output shortcut
Crossover filtering 18dB/Octave
Input impedance RCA 10 kOhm
Input impedance high level 1 kOhm

What do you guys think?
Has it enough power to my room? my 5 surround speakers are 120Wrms, but it doesn't mean I pump them to the limit. Is it enough for a closed design or should I go for the 500Wrms the Hypex DS 4.0?
Really need a help on this!

Thanks guys!

[revboden]

Which design did you settle on?

[RuiSilva]

Originally Posted by revboden

Looks good,

edit: If you want an example of a very good sounding ported sub using 6.3ft^3 and a rss315hf-4 I made one. my "little" build

Little..... RRRRiiiiiight!!!
Your DIY look very nice!! what kind on amp do you have driving it?

[RuiSilva]

Originally Posted by revboden

Which design did you settle on?

I''m going with the Dayton closed design with a volume of 107L (3,56cu.ft). The box and driver properties are the same as I posted in my previous thread (box is going to be a cube). What do you think? Is 170Wrms enough? or should I go for the 400Wrms? I really don't know what to choose in this situation.

Thanks Revboden!

[revboden]

I'm using a Dayton SPA500 for my little sub. For the rss390hf-4 in 107L I'd go with the 400w amp no HP filter needed.

You will only need 300w to reach Xmax at 20hz but I find It's nice to have some headroom on the amp to avoid clipping especially at low frequencies.

BTW, the F12 of that design is at 18hz / 100db

[RuiSilva]

Thanks for your info revboden... I'll go for the 400W amp has you said, I really don't want any clipping on this piece of hardware!
I'm going to purchase the hardware on-line and when it arrives I'll post more news, pictures and comments about the quality construction and other things!

[Zero D]

@ RuiSilva

All the best with you build etc

[RuiSilva]

Hello guys!

I'm still waiting for my components, and thinking about the MDF wood for my box, should I go for a 3/4" (1.9cm) or thicker? I've the chance of doing it with a board of 3cm thick, should I go with it or not? If not is the 3/4" enough?

By the way, last week I tried the Grand Utopia from FOCAL... and my jaw fell to the ground. The guy could get me the driver of the Electra Subwoofer the "Electra SW 1000 Be" but I had allready placed and payed my order for the Dayton driver...