12-08-2023, 09:13 AM | #111 |
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I used the Technic Add-a-sub harness with the JL Audio 10W3 sub and RD500/1 amp, which includes a configurable LPF and volume control. I dialed the LPF down as low as it goes - I think that's 50 Hz, and used the volume control as a poor man's equalizer to get the right balance with the under-seat woofers. In my judgment it sounds great without a need for further DSP, although I'm sure a purist would want to go the extra mile.
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12-08-2023, 10:15 AM | #112 | |
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12-08-2023, 10:43 AM | #113 |
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Interesting point - The amp advertises "speaker level inputs" although the spec says only up to 8v. I didn't know that the HK amp can deliver 40v, although I've never had a problem with distortion, even at high listening levels.
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12-11-2023, 02:42 PM | #114 |
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I went for an Audio Control LC4.800 after reading that the HK amp speaker output could be up to 40v. A lot of amps with speaker level input can't handle that in theory. Maybe it's not such a big deal after all.
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12-11-2023, 03:01 PM | #115 |
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I am running the ACM 1.300 and trying to figure how how to increase the base output from the amp. The gain is setup using a multi-meter. Basically 300 watts rms X 2 ohms = 600 --> square root of 600 = 24.49 Vac which is what I am mearing on the speaker outputs on the amp and that is how I adjusted the gain. Outside of that I am not sure how to increase the bass on the amp. There is a threshold and level adjustments but that is for Accubass.
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12-11-2023, 04:55 PM | #116 |
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The ACM 1.300 has a gain control and gain maximised LED. The LC4.800 has similar and I used this to maximise gain without clipping of the input source (about 80% volume at the head unit).
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12-11-2023, 08:15 PM | #117 | |
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12-11-2023, 08:24 PM | #118 |
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I used an 80hz tone and then 50hz tone.
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12-11-2023, 08:33 PM | #119 |
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Try setting the gains with a 40hz tone at -3db or even -5db.
Edit: Try using the gain light if your amp has a feature like that- it's not bad. Set a friends gains real quick using a similar feature on an RF amp and the results were much improved over the original output. Not a huge fan of the multimeter method and even though Steve Meade's shop is literally right around the corner, I can't convince myself to buy a DD1. Last edited by RonronEG; 12-11-2023 at 08:41 PM.. |
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12-11-2023, 08:55 PM | #120 | |
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12-12-2023, 07:53 AM | #121 |
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What are your Accubass settings?
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12-16-2023, 07:55 PM | #122 |
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JL Audio 10W3v3-2 paired to Audiocontrol ACM 1.300 mounted under the subwoofer enclosure.
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12-19-2023, 02:00 AM | #124 |
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Has anyone in this thread experienced a “Battery Managment Error”?
I have suspicions that my rd/1500 is pulling too much power and is causing this. I got back from a long drive yesterday (5hrs) and still got the error this morning on a short drive. Didn’t use amp at all during the drive in hopes to recharge battery. I connected to BimmerLink (just got the obd adapter today) and it showed battery was at 80%. Separately, other posts show that connecting things directly to the battery (such as trickle chargers) in the trunk can cause error messages to occur. Further, I work from home and drive short distances so the battery doesn’t get “optimal” charging time. Continuing to test and monitor the next few days but just wanted some feedback. Edit: sharing my setup :-) |
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01-08-2024, 10:09 AM | #125 | |
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Hi mate, On the negative side of your battery clamp is a IBS integrated in to it. This sensor goes bad and that might be your problem. Check it out! |
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01-11-2024, 05:19 PM | #126 |
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Thank you for the suggestion! BMW conducted an energy diagnostic and concluded that the battery was faulty (undervoltage during operation and after charging it). Also confirmed the radar/amp were not pulling any power while vehicle was off. Guess I just got a faulty battery upon delivery. Replaced under warranty without question.
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01-12-2024, 07:40 AM | #127 |
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01-12-2024, 07:43 AM | #128 | |
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