subsonic filter

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blackcivichatch

Copper - Posts: 229

Joined: January 27, 2009

Location: Missouri, United States

Posted: November 03, 2009 at 8:59 PM / IP Logged

So my new amp (SPL DK2 2000) has a sub sonic filter. there isn't a switch to turn it on and off. and its lowest level is at 30Hz. is there any way I can disable the subsonic filter?

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Joined: November 01, 2003

Location: Alberta, Canada

Posted: November 03, 2009 at 10:33 PM / IP Logged

What makes you want to disable it?

Top Secret, I can tell you but then my wife will kill me.

blackcivichatch

Copper - Posts: 229

Joined: January 27, 2009

Location: Missouri, United States

Posted: November 03, 2009 at 10:52 PM / IP Logged

30Hz seems a lil high.. Feels like I'm loosing a little on the low side. It might jus be my imagination though.

Does it cut everything off lower than 30, or is it a roll off?

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haemphyst

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Joined: January 19, 2003

Location: Michigan, Bouvet Island

Posted: November 04, 2009 at 8:43 AM / IP Logged

Just like any crossover, it's a roll-off. 30Hz is the 3dB down point. Seems like a super-dee-duper amp that you can't even adjust to a decent frequency, let alone disable the subsonic... Where'd you get it so I don't make the same mistake...? Are you absolutely certain you can't disable it?

It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

blackcivichatch

Copper - Posts: 229

Joined: January 27, 2009

Location: Missouri, United States

Posted: November 04, 2009 at 8:39 PM / IP Logged

Well I got it from a friend of a friend. They go for about $300 new. It was only used for a couple months. Its only temporary till i can afford the pdx 1000.1. And Yes unfortunately it cannot be disabled.

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blackcivichatch

Copper - Posts: 229

Joined: January 27, 2009

Location: Missouri, United States

Posted: November 04, 2009 at 8:44 PM / IP Logged

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i am an idiot

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Posted: November 05, 2009 at 2:00 AM / IP Logged

If I happen to have one of those jewels come across my bench in the next few weeks, I will open it up and see if I can figure out for you. Depending on how the filter is designed, it may be as simple as changing a couple resistors to lower the frequency to 15Hz.

blackcivichatch

Copper - Posts: 229

Joined: January 27, 2009

Location: Missouri, United States

Posted: November 05, 2009 at 7:21 AM / IP Logged

That would be amazing and greatly appreciated. If i got ahold of a high def camera, do you think pictures of the circuit in that area would help?

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DYohn

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Joined: April 22, 2003

Location: Arizona, United States

Posted: November 05, 2009 at 10:26 AM / IP Logged

SPL is Power Acoustik's bargain brand, if that tells you anything... If you can't turn off the subsonic high pass, then you probably do not want to use this amp with a sealed subwoofer system. Indeed, I would recommend not using this amp period, but that's just me...

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blackcivichatch

Copper - Posts: 229

Joined: January 27, 2009

Location: Missouri, United States

Posted: November 05, 2009 at 11:15 AM / IP Logged

DYohn wrote:

I would recommend not using this amp period, but that's just me...

Lol. I'm beginning to agree. I'm gonna see if i can get someone else to buy it off me and try my luck again. I really just need something cheap for temporary. Plus the SPL logo lights up bright blue and I'm goin for green... So I guess its back to Ebay. subsonic filter -- posted image.

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