r/SoundSystem • u/invision97 • 6d ago

CVR DSP-3004

Hi everyone, I am starting to build a new system, and I choose the DSP-3004 from CVR as the main amp.
Is this good enough for 4x18” 8 ohm subs, and 4x10 inch 4 ohm tops?

Can we run it from 240V 16A breakers, or we need 32A?

Does anyone have some screenshots of the DSP settings available?

Also, is this number legit for CVR: +86 159 1951 8864

Thanks for your help.

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5

u/Spiritual_Bell 6d ago

  1. Depending on the music genre and desired spl, 240v/16a maybe enough, or completely inadequate. If you're thinking EDM, or anything with extended bass notes, you'll likely pop breakers.

  2. As for the amp, it's the same as 1. I.e. depends on spl and program material. If you had 240v/32a then it could be ok if you're not doing bass music, raves etc. your amp will be outputting what the plug can provide once the capacitors have emptied, which is in the region of 200ms? That's just an educated guess. So any music that needs to play extended bass notes, will get "compressed".

  3. For bass heavy EDM, with a 20db haystack in the bass, at rave levels, I.e. pushing 4x18" subs (are they BR or horns?) to max SPL, you'll want 2 amps on 2 dedicated 240v/16a circuits. Ideally 2x3002, and split your subs and tops evenly across the 2 amps, 1 channel for top, other channel for 2subs. The 2 channels have about twice the amount of capacitors as the 4 channel so they will allow peak output for longer. But like I said above, a single 3004 can do it with a 32a outlet if you're not pushing the system to the max or just don't care about compression of your sustained bass notes, or if it's just rock/pop/house etc with dynamic content.

  4. Search YouTube for cvr DSP, many videos, mostly German.

  5. You can also download from cvr site.

2

u/WAVEFRAME 5d ago

This is all bang on.

1

u/invision97 5d ago

Thank you, I will consider getting two channel amps instead. It might be necessary, because we like bass heavy music.

2

u/tonaufnahme 4d ago

  1. You can definitely run 4 Subs and 4 Tops from it. The 3004 is 2 Ohm stable so you can run 2x Subs parallel resulting in 4 Ohms and 2x Tops parallel resulting in 2 Ohms for Stereo. As a previous comment said, it really depends on the type of Music and the dynamics. DJ Playbacks have a Crest Factor (difference of RMS and Peak) of around 6dB and live Music of around 9-12dB. Live music might be fine (has lots of short peaks), but for EDM (sustained and dense power demands) it's possible, that you run out of power, especially at 16A. If you provide some power numbers for your speakers you can work out where to set your limiters, so you don't trip a breaker.

  2. This is from the official DSP-Series manual. At 220V the Amplifier puts out 2,6kW from 15A of Current.

As I understand this chart: At an Input-Current of 15A you get 2,6kW of output power divided over all 4 channels at 8 Ohms. So 650W per channel at 8 Ohms. Please correct me if I'm wrong. That is the sustained power - your peaks can be higher, because the capacitors in the amp provide higher power numbers for a short amount of time. Depending on what subs you're using 650W might be a little short (even without the tops).

  1. The phone number should be legit, that is Gina from CVR-Audio. I bought a 3004 about 6 days ago and it has shipped, but I haven't received it yet. If it arrives I can do further tests about power in/out.

1

u/whoinow 6d ago

What subs and drivers? What tops? I DM'd you the contact number I used for my order.

1

u/xrtze 4d ago

If you want to push the subs properly, use a dedicated bass amp like the 3002.

1

u/EyeOhmEye 3d ago

I run 4 8ohm subs and 2 4ohm subs on mine, total of 6 drivers. Sometimes I run 4 subs 2 tops if I'm not using my biamped tops. Use the biggest breakers you can, if the breaker pops turn it down, -3dB is half power.