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Low Earth Orbit
DIY Audio
60 Degree DIY Mid Hi - AKA PM60
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<blockquote data-quote="Albe Kohler" data-source="post: 213508" data-attributes="member: 13673"><p>Hi guys, I have a question regarding FIR. I'm just starting to understand it and now I'm stuck between wanting to experiment and not knowing whether my DSP unit selection is optimal for my goal. I want to buy a FIR-capable DSP unit and start playing with it, while not having to buy another one in the future due to realizing that something doesn't quite match.</p><p>I'll have two PM60s triamped, so six channels total. And then two 18" subs - two more channels. I want to use the Lake LM26 for FIR processing in the future. And I'm wondering about the following:</p><p>A) is it 'ok' to use the six OUTs on the LM26 for 2SUB, 2MID,2MID-COAX and leave the 2HF-COAX (meaning the high frequency driver of the Coax) without FIR processing. It seems like I would need it more in the lower frequencies. By 'ok' I mean sacrificing my ability to carve out successively better audio quality.</p><p>B) The 12" in the PM60 will be driven by a Crown 4x3500HD (I actually will have 4xPM60, that's why 4Ch-amp, but that's not really relevant right now), which can do FIR, I can even import FIR settings via .csv file in Audio Architect. So ideally I would run the 2SUBS, 2MID-COAX, 2HF-COAX with the 6 OUTs of the LM26 and the 2MID via the FIR-capable Crown Amp. But I'm not sure whether that leads to potential problems (e.g. in phase or delay) if I run a different FIR unit within that midband.</p><p>Now I'm aware that there are FIR-DSP units by other brands that have 8OUTs, but I heard the Lake has the superior sound quality.</p><p>Any further advice is highly appreciated.</p><p>Thanks!!</p></blockquote><p></p>
[QUOTE="Albe Kohler, post: 213508, member: 13673"] Hi guys, I have a question regarding FIR. I'm just starting to understand it and now I'm stuck between wanting to experiment and not knowing whether my DSP unit selection is optimal for my goal. I want to buy a FIR-capable DSP unit and start playing with it, while not having to buy another one in the future due to realizing that something doesn't quite match. I'll have two PM60s triamped, so six channels total. And then two 18" subs - two more channels. I want to use the Lake LM26 for FIR processing in the future. And I'm wondering about the following: A) is it 'ok' to use the six OUTs on the LM26 for 2SUB, 2MID,2MID-COAX and leave the 2HF-COAX (meaning the high frequency driver of the Coax) without FIR processing. It seems like I would need it more in the lower frequencies. By 'ok' I mean sacrificing my ability to carve out successively better audio quality. B) The 12" in the PM60 will be driven by a Crown 4x3500HD (I actually will have 4xPM60, that's why 4Ch-amp, but that's not really relevant right now), which can do FIR, I can even import FIR settings via .csv file in Audio Architect. So ideally I would run the 2SUBS, 2MID-COAX, 2HF-COAX with the 6 OUTs of the LM26 and the 2MID via the FIR-capable Crown Amp. But I'm not sure whether that leads to potential problems (e.g. in phase or delay) if I run a different FIR unit within that midband. Now I'm aware that there are FIR-DSP units by other brands that have 8OUTs, but I heard the Lake has the superior sound quality. Any further advice is highly appreciated. Thanks!! [/QUOTE]
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