Audiohz
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Posts posted by Audiohz
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Have been playing with the dd1+ and found an issue in on vehicle. Car 1 gain set to -7.5db recheck the gain using the method in the owners manual and it shows right on the money-7.5db . In this car it’s a deaf bonce Machete 2k amp running on AGM batteries. 2nd car is a sundown salt 4K running on UGP Lithium and when I set with the same overlap and rechecked it’s -6.2db? Would it be anything with the batteries? Also with the Machete when I hit distortion before I hit read the voltage on the display holds steady but with the salt 4K I will have voltage jump from 79.6 up to 81.3 constantly rolling voltage up and down before I hit read. This has to be causing the incorrect gain overlap reading. But what is the root cause of it? Help please.
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19 hours ago, Joe X said:
100% you need your subsonic engaged, the SALT 4K will put out more than 4K, not only will protect your subs but can also reduce the amp operating temperature among other benefits.
The frequency you set your subsonic filter is calculated as 0.75 x tuning frequency of the box.
I have a smd CC1 was looking at setting to 25hz but many people telling me turn it off the X series can play lower no problem. Would I hear any issues before it’s to late damaged caused or best to just set to 25hz lol .
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A sundown salt 4K on two sundown X12v2 d4 running @1ohm . Subs in a Gately 4.0 cubic enclosure, so tad under sized . Would you use the sun sonic or off. Got it off now only played low volume so far .
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I have a sundown salt 200.2 going to be on a Sky High Car audio 3 way component set. Just curious what you guys would recommend for gain overlap if any. https://skyhighcaraudio.com/shca-65c3e-3-way-6-5-component-set-4-ohm-ferrite-motors-silk-dome/
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So I have already set the sub amp gain with the DD1+ (awesome tool) with a overlap of -6.7db . Now have installed the OM-1 and a little confusing on how to sync it with the DD1 + . The instructions tell how with a regular DD1 I am sure there has to be a way with the + . I’m sure this is simple. Help please.
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I have two U12 D4’s . I charge at 14.2 with a pcm controlled mechman. Between the sfb 8k and the SALT 4K what would be the better choice? Personally leaning towards the salt but not 100% yet.
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Upgraded my sundown scv 3k that I had my om-1 in use with. Now to a sundown sfb 5k my om-1 does not seem to work! Is there something with the sfb tech that will not work with the om-1 ? I have set me gain and crossover with my dd1 and cc1 no problem. Sucks my om-1 is not working the same.
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When I watch the video sundown post they set the sub sonic for 20hz and that put the dial on the pot at a quarter turn when I do 20 hz with my cc1 20hz is half way.
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10 minutes ago, 1point21gigawatts said:
You are using the cc-1 incorrectly then. It does the same thing as the dmm method but it is better and can do a little more. The sfb amps are full bridge amps that make it where you can set the crossovers with a dmm. But regular half bridge amps subsonic filter, even though a subsonic filter and high pass filter are basically the same thing, it won’t allow you to set the subsonic filter using a dmm but a dmm can set a high pass filter on a full bridge amp. It makes no sense. But a cc-1 can set any filter. You just have to learn the cc-1 correctly. You are doing something wrong even though it seems like you are doing everything right. It happens sometimes. Even to pros.
Wish I new what I was doing wrong. I have set many amps using the cc1. Do it by the book every time. Even the smd om1 when used with the won’t work at.
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Use the smd cc1 to set the sub sonic on the sfb at 31 hz box is tuned at 32hz. Being the amp has a 12db slope I set close to tuning and it’s cutting so much bass it’s got the bass sounding so weak. Went as low as to set at 20hz with the cc1 and still no good. So I set with a damn the way sundown shows on a YouTube video they posted https://youtu.be/cXb4yh6Gdx4 and the subs sound amazing. Anyone have experience with this combo?
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With the U10 what probably the smallest box size you would use them in. Recommended is 1 cube. Looking to over power them cleanly as well .
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So looking at box specs I plugged in to ultimate car audio app it shows my bandwidth from 24hz to 63hz. The app says set ssf to 24hz I have tuning of 32hz and says set lpf at 63hz. Well my smd cc1 Manual agrees with the ssf setting but says for a 10 inch sub with a 24db slope set the lpf at 125hz. So how many people have had luck with that not sure what to go by .
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Looks like the recommended tuning on sundowns website for the U series has changed from 32hz to 35hz picking up my new box tomorrow was designed for 32hz will I be ok with that vs 35hz that is recommended now?
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24 minutes ago, 121gigawatts said:
I would never have a port firing upward unless it was a last resort and I was pressed for space and had no other choice. So no, never have the port firing up. If the back seats in your car pull down to allow access to your trunk then have the subs and port firing back towards the front seats. If the seats don’t pull down then have the subs and port firing forwards towards the hatch of the trunk.
The Scion tC is a hatchback that’s why I was thinking sub/port up at the glass vs toward the rear of car but most people say will not sound as good idk.
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one other thing with that box it is subs and port on same side. the car is a hatch back scion TC would you fire back or fire up?
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Ok so we pulled the trigger did two U 10’s D4’s on a sae 3k in one of the D4S pro fab pre fab boxes ... box is said tuned to 32hz , ok that’s befor any said sub displacement is calculated. With the two U 10’s that’s 0.42 of displacement that’s moving the box tuning up to about 35.5hz ! I see sundown website says 32hz l is what’s recommended. Should we do poly fil in the box? If so how much to take away the displacement of the subs? Do not want to invert the subs at all.
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With the sae 3k I’m torn right now between the sa 10 and the U10 . I know sundown subs are underrated but also the amps. I’m sort of leaning towards the new sa.v2 most people I see running the sfb 3k on a pair. Would I gain much going with the u10’s I see most doing 4K on a pair. I’m thinking I could run at half ohm but not sure how the sae line like half Ohm. I have no plans on a larger amp . Not sure what my best option is.
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So Two sundown sa 15’s in sealed box or two U10’s ported tuned to 32hz amp would be a sundown sae 3k . What would be over all louder? Don’t know anything much on the U’s never heard them in person. Can’t really fit two 12’s and give the much room to breath in proper box. So my picks is 15’s sealed in the hatch or two 10’s nice big ported box.
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So been using the dd1 love it. I have one system two sundown sa15’s on a sundown sae 3k @1ohm. 240 alt, xs d3400 up front d5100 in rear . Subwoofers in a sealed box due to space .2.5 cubes per. Currently amp is set with the dd1 at -7.5db and begging for more . Any truth to a sealed box set up actually needing more power ? Heck at -10db Would I not be throwing 3k plus on them ? Double rated.. I only play retail music and music from iTunes.
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13 hours ago, strangeduck said:
im running a sk2500 to a pair of rev-1 sa-12 in a ported box with -10db overlap. you are running sealed so you will never smell coil. me? i just dont care, i full send my setup all the time with no issues.
not sure why you are running that much power with a sealed enclosure as that seems like you are looking to get a lot of output, or you are looking for a metric crap ton of overhead and are building a monster SQ setup.
Well went sealed because couldn’t fit them ported. Went with the amp for headroom so could maximize the subs. Still want to get loud as possible not looking for as much as a SQ setup. I’ve been told by a local shop with the amount of headroom I shouldn’t set with any overlap because at 0db the amp is doing 3k plus watts.
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30 minutes ago, Mike4068 said:
Depends on what music you listen to. If you listen to today's rap then - 10 will send you into clipping. I personally use snowdrifters - 7.5 Dropbox file. Even then I have to watch it because I still clip. - 5 just doesn't seem to be enough though. Experiment and see what works best for you
I am thinking the same from what I have seen with -5db, but it’s double the power so I may start it there and listen. I have the -7.5 also if it needs more.
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Going to set the gain for a sundown sae 3000 that’s on two sundown sa15’s in sealed box. Strong electrical 240 amp alt, xs d3400 up front and a d5100 in the rear. I’m looking at the -10db track doing way to much. What would be best setting?i know the SA’s can take some abuse but don’t want to over do it.
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Well I'm currently using a sae 3000d with the gain set with a smd dd1 at -8.8db 40hz.. I'm tempted to push harder at -10db 40hz.
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29 minutes ago, strangeduck said:
im running my two rev 1 sa-12's (rated 600 rms each) on 2500 watts . but a SAE1500 would be just fine. i would use an SAE2000 but wouldnt recommend it to anyone without saying there is some risk involved.
So your using a 2500 amp 1250 to each 600 watt sub . But I have rev 3 15's in a sealed box and shouldn't go over 1k per sub? Sounds kinda weak. Idk
SMD DD1+ issue
in SMD Distortion Detector (DD-1) Topics
Posted
I had wondered about pot creep on the gain and others but this is happening right after setting the gain .