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Low Earth Orbit
DIY Audio
New DIY Mid High (90deg) - AKA PM90
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<blockquote data-quote="Peter van Gils" data-source="post: 204656" data-attributes="member: 3943"><p>Hi Andy,</p><p></p><p>Strange that you have this much trouble in getting the BMS to sound good. Did you check the resistance of the BMS HF and VHF? Maybe it's 8 Ohms and that could explain the rather big dip you have at 5-6 kHz.</p><p></p><p>No air leak between driver and horn?</p><p></p><p>Are you sure that your measurement mic is ok? You might be correcting a defective mic...</p><p></p><p>I have the 8 Ohms BMS and it is running at -8 dB compared to the 12" RCFs. So, I would expect that you would need -8 + 6 = -2 dB on the BMS since you're using the 16 Ohms version (if your amp channels have the same gain!).</p><p></p><p>I only need -4 dB @ 3-3.5 kHz PEQ on the BMS to get a decent sound and a rather flat response (+/- 3 dB or so)... Hmm.</p></blockquote><p></p>
[QUOTE="Peter van Gils, post: 204656, member: 3943"] Hi Andy, Strange that you have this much trouble in getting the BMS to sound good. Did you check the resistance of the BMS HF and VHF? Maybe it's 8 Ohms and that could explain the rather big dip you have at 5-6 kHz. No air leak between driver and horn? Are you sure that your measurement mic is ok? You might be correcting a defective mic... I have the 8 Ohms BMS and it is running at -8 dB compared to the 12" RCFs. So, I would expect that you would need -8 + 6 = -2 dB on the BMS since you're using the 16 Ohms version (if your amp channels have the same gain!). I only need -4 dB @ 3-3.5 kHz PEQ on the BMS to get a decent sound and a rather flat response (+/- 3 dB or so)... Hmm. [/QUOTE]
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New DIY Mid High (90deg) - AKA PM90
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