#1714322 - 10/05/09 10:05 AM
amp vrs speaker question
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Qikazel
SD Ralph Wiggum
Registered: 12/10/08
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I have a question. My PPI 6.5 componenets are bi-ampable. I am running a Soundstream ref 500 to the mids and tweets now through the passive x-overs. I have a Pioneer 9200 DE-Q with can be active and has time delay. I am adding a Soundstream Class A 100 to the tweets this week. Do I use the bi-amping through the passive x-overs that came with the speakers or do I cut out the passive x-overs all together and run everything totally active?
Also I have a second Soundstream D100. Would I be better off running each mid with one and my tweets off of my Ref 500sx at high current mode? That would be 63 rms to the tweets and 100 rms to each mid.
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#1714328 - 10/05/09 10:11 AM
Re: amp vrs speaker question
[Re: Qikazel]
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basher8621
SD I wear red in a Crips neighborhood
Registered: 09/30/07
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I would run active. I went from passive to active and will never go back.
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#1714336 - 10/05/09 10:28 AM
Re: amp vrs speaker question
[Re: basher8621]
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keep_hope_alive
in another life, i'm a serial killer
SD I Power Bombed the Undertaker
Registered: 04/24/07
Posts: 13370
Loc: Quad Cities, IL
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x2 on running active. if you have the proper crossover ability then do it.
i don't know if your amps can do crossovers for tweeters. most are below 500Hz range.
if that is the case, you can run the midbass full active, then run the tweeters through the passives - but on separate amp channels. that will also give you some protection for the tweeters.
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#1714433 - 10/05/09 12:59 PM
Re: amp vrs speaker question
[Re: keep_hope_alive]
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Qikazel
SD Ralph Wiggum
Registered: 12/10/08
Posts: 58
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Thanks for the replys. So basically on my tweets, use the rcas out of the eq for highs to the D100(50 watts x2 @4ohms) amp. Then run the speaker wires off the amp to the passive x-overs, to the tweets. If this is right, I have another question. I have heard that you must run both component speakers through the provided x-over or neither. This is due to some load issue on the x-over if both speakers are not powered through the x-over. Ever heard this? I think the post regarding this was over on DIY.
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#1714435 - 10/05/09 01:02 PM
Re: amp vrs speaker question
[Re: Qikazel]
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basher8621
SD I wear red in a Crips neighborhood
Registered: 09/30/07
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I have heard of speakers being damaged when only using one output on the crossover. I cannot remember exactly what it was but it has something to do with having a 12db slope. I will try to dig up more ingo on that for you.
Edited by basher8621 (10/05/09 01:02 PM)
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#1714437 - 10/05/09 01:11 PM
Re: amp vrs speaker question
[Re: basher8621]
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basher8621
SD I wear red in a Crips neighborhood
Registered: 09/30/07
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If the crossover is using a 12dB/octave slope or impedence compensation circuit. If it has either of those then you shouldn't
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#1714514 - 10/05/09 05:24 PM
Re: amp vrs speaker question
[Re: basher8621]
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Qikazel
SD Ralph Wiggum
Registered: 12/10/08
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Thanks again.
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#1714518 - 10/05/09 05:28 PM
Re: amp vrs speaker question
[Re: Qikazel]
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Qikazel
SD Ralph Wiggum
Registered: 12/10/08
Posts: 58
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Another Question. If my eq has the crossover points to protect the tweeter, it would be ok to amp them drect vs using the passive x-over.
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#1714567 - 10/05/09 07:38 PM
Re: amp vrs speaker question
[Re: Qikazel]
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keep_hope_alive
in another life, i'm a serial killer
SD I Power Bombed the Undertaker
Registered: 04/24/07
Posts: 13370
Loc: Quad Cities, IL
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yes, if it has outputs with a a1kHz high pass (or higher) then you don't need the passives.
the passives also provide overload protection. just be careful and pay attention to what you're doing.
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#1714648 - 10/06/09 03:59 AM
Re: amp vrs speaker question
[Re: keep_hope_alive]
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Qikazel
SD Ralph Wiggum
Registered: 12/10/08
Posts: 58
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Here are the specs for the x-overs on my eq. It looks like it will be safe for the tweets. Am I correct?
Pro Mode (Digital Network Priority)
Time Alignment (0 ~ 160", 0.5" Steps)
Listening Position Selector (4 Mode: Front Left/Front Right/Front/All)
High HPF: 2.5k/3.15k/4k/5k/6.3k/8k/10kHz, Level -24 to 0dB, Slope -18/-12/-6dB
Mid LPF: 2.5k/3.15k/4k/5k/6.3k/8k/10kHz
Mid HPF: 40/50/63/80/125/160Hz, Level -24 to +0dB, Slope -18/-12/-6dB
Low LPF: 40/50/63/80/125/160Hz, Level -24 to +6dB, Slope -24/-18/-12dB
Phase Switch for High/Mid/Low
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