[bmw325i]

Originally Posted by Wongway

If/when you get Jehnerts for the underseats, you can bring up the low pass to about 200hz (might be a bit high, but that's the next notch I see on that) and then bring the Morels up to high pass at the same point.

Do the Morels work off a passive crossover for the tweeters? Any idea what the passive crossovers are set at?

IMO 200 is too high there is too much playing below your feet. 150 worked better for me and I know some people even use them down to 120hz. I didn't want to risk blowing them so I havent tried going lower than 150.

[kaigoss69]

Originally Posted by bmw325i

IMO 200 is too high there is too much playing below your feet. 150 worked better for me and I know some people even use them down to 120hz. I didn't want to risk blowing them so I havent tried going lower than 150.

Correct, it is not about how high the underseat can play, but rather how low the door mids can play.

[Wongway]

Originally Posted by bmw325i

IMO 200 is too high there is too much playing below your feet. 150 worked better for me and I know some people even use them down to 120hz. I didn't want to risk blowing them so I havent tried going lower than 150.

I wouldn't necessarily disagree with your opinion.

Only concern is whether or not 4" mids can handle playing that low, as kaigoss69 mentioned. If they can handle it, great!

I would say that's a grey area depending on whether or not the 4" speakers are capable of handling playing as low as 150hz, and whether or not they suit your tastes. However, I do hope this slight derail doesn't further confuse psmitty95

[psmitty95]

Nah i'm good and understanding. When I do get the jehnerts i'll probably have them set to 150 ish and have the mids around the same. Right now the morels are playing down to 135 and they seem to be doing just fine

[Wongway]

Originally Posted by psmitty95

... Right now the morels are playing down to 135 and they seem to be doing just fine

That's good to hear!

By reputation, the Morels are supposed to be good. I've just never heard them before and never knew what their lower limits are.

[jeffb335]

Originally Posted by psmitty95

Nah i'm good and understanding. When I do get the jehnerts i'll probably have them set to 150 ish and have the mids around the same. Right now the morels are playing down to 135 and they seem to be doing just fine

Yeah, after a million trial and error attempts I landed on 170hz as the optimal crossover point with the jehnerts, in my system at least. Any higher and the low vocals start to get a bit thick, lower and the midbass gets a bit uneven.

[psmitty95]

Installed the Jehnerts today and they're great at some times and other times they seem lacking. I had to up the bass on the headunit EQ to get it to where I thought it was solid but still wasn't enough during some songs imo. I have it at 160 LP and the mores at 174 HP. Should I lower the morels down a bit to get more, or maybe up the gain a bit for the jehnerts? I still have the gain set pretty low to where I set it with the DD-1

[Wongway]

Try letting the Jehnerts play up to where you have the Morels high passed to.

Any better description as to what you think you're missing? Since you've got a gap between 160 and 174 now that might produce some strange behavior.

[psmitty95]

Originally Posted by Wongway

Try letting the Jehnerts play up to where you have the Morels high passed to.

Any better description as to what you think you're missing? Since you've got a gap between 160 and 174 now that might produce some strange behavior.

Well the Jehnerts are amazing in terms of punch and the clarity of the bass, however, on certain songs the feel just doesn't seem there to me. I gotta go back out to hear what songs are doing it but I mean I can hear the bass but I don't get as much feeling as I would like for some notes. I'll try having the Jehnerts play up there and then maybe try lowering the morels to 160 and see if that helps. If you have any other ideas to try let me know. Maybe it's just that the feel i'm talking about i would need a real sub in the trunk for

[jeffb335]

and keep in mind.....in higher end audio its accurate sound reproduction that is the goal, trying to duplicate as closely as possible what the original recording engineers were after....and that is largely based on their preferences. Some songs will have a lot of low end, some wont. Some will be punchy, some mushy, some warm, some dry. Having a good reference system and a collection of reference tunes is invaluable in that regard.

Crappy stock systems (and things like compression on radio) tend to mask these variations in recordings but as your stereo gets more accurate, the differences will become more pronounced.

You should get the gain set right between your channels before you start messing with tone controls, turning up the bass on your head unit is something you would do LAST, if at all. If the underseats are too low either turn them up, or turn your mid/tweeters down. But use your ears to get a pleasing balance.

Also get your crossovers between the underseats and mids worked out. Listen to music that "crosses over" from the underseats to the mids and see how clean that transition is.

And finally, yes, a trunk sub is a nice addition, the jehnerts are clean and sound great and can play nicely down to about 40-50hz, but thats still leaving out the lowest octave, and you dont have to be a basshead to notice when its missing. BUT, get all of the above sorted out FIRST and then see where things stand.

[psmitty95]

Originally Posted by jeffb335

and keep in mind.....in higher end audio its accurate sound reproduction that is the goal, trying to duplicate as closely as possible what the original recording engineers were after....and that is largely based on their preferences. Some songs will have a lot of low end, some wont. Some will be punchy, some mushy, some warm, some dry. Having a good reference system and a collection of reference tunes is invaluable in that regard.

Crappy stock systems (and things like compression on radio) tend to mask these variations in recordings but as your stereo gets more accurate, the differences will become more pronounced.

Get those crossovers between the underseats and mids worked out. Listen to music that "crosses over" from the underseats to the mids and see how clean that transition is. And yes, a trunk sub is a nice addition, the jehnerts are clean and sound great and can play nicely down to about 40-50hz, but thats still leaving out the lowest octave, and you dont have to be a basshead to notice when its missing.

That could be what it's missing then. I just went out and upped the jehnerts to 74 and honestly they sound great. The best overall sound system i've heard in a car and it completely blows the f10 m5 B&O out of the water. But it does still not "shake the car" for lack of better words like I thought it would. Again maybe it's missing a sub or i'm being too picky and don't remember correctly but I thought the MB quart subs were always adequate enough. Songs I thought it was lacking in was sex on fire by kings of leon, L$D by asap rocky, and R.I.C.O by meek mills. Leaving in a few hours for vacation so couldn't really play a ton of songs to see which were the most noticeable but those were a few I picked out. I played all three songs after in my mom's cayenne with the base bose system and even though the bass was not nearly as crisp it did feel a bit more powerful.

Hopefully i'm describing what I feel the jehnerts are lacking. It's probably just me being too picky though but if there are settings that anyone thinks could alleviate the issue i'm all ears. I have the bass +5 on the headunit EQ which I forgot to mention

[jeffb335]

And now we go all the way back to the beginning of this thread.....well....actually your other thread about the MB quarts.

If you have the bass set on +5, then your gain is too low on the underseats. OR its too high on everything else. But either way, with the setup you have, the head unit's bass control should be used in a -1 to +1 range based on your listening material and mood, going further than that means your amp gains are not balanced well.

Turn the tone controls on the head unit to 0. Then use the amp gain to get a pleasing balanced sound. I would just tell you to turn the amp up on the jehnerts but I know you are gun-shy about that so instead turn your amp gain on your mids/highs down until you have a good tonal balance with the jehnerts. You will find that EVERYTHING will sound better that way. THEN if you need a bit more treble, a bit less mids, a bit more bass, go ahead, but if you are going more than a click or two either direction, things still are not dialed in at the amp.

[psmitty95]

Originally Posted by jeffb335

And now we go all the way back to the beginning of this thread.....well....actually your other thread about the MB quarts.

If you have the bass set on +5, then your gain is too low on the underseats. OR its too high on everything else. But either way, with the setup you have, the head unit's bass control should be used in a -1 to +1 range based on your listening material and mood, going further than that means your amp gains are not balanced well.

Turn the tone controls on the head unit to 0. Then use the amp gain to get a pleasing balanced sound. I would just tell you to turn the amp up on the jehnerts but I know you are gun-shy about that so instead turn your amp gain on your mids/highs down until you have a good tonal balance with the jehnerts. You will find that EVERYTHING will sound better that way. THEN if you need a bit more treble, a bit less mids, a bit more bass, go ahead, but if you are going more than a click or two either direction, things still are not dialed in at the amp.

I'll play around with gains when i get back in two weeks i guess. Just assumed that no matter what they shouldn't go past where the multimeter and dd-1 say to stop but I can give it another go doing it by ear

[jeffb335]

correct, which is why I suggested turning the mids and highs down instead of turning the subs up. That way we can be sure that no part of your system will be driven to distortion.

[psmitty95]

Originally Posted by jeffb335

correct, which is why I suggested turning the mids and highs down instead of turning the subs up. That way we can be sure that no part of your system will be driven to distortion.

will try that. Thanks

[Stream]

Hello
What HP freq for Jehnerts do you prefer?
I'm using 60hz 12db HP and 200hz 12db LP now and something wrong with bass for my taste.

I'm planning to replace midrange with AD W4 and lower midrange HP and midbass LP to 150hz.
But I have no idea about midbass HP filter.

[jeffb335]

I would HP them lower....right now you are cutting out a lot, try lowering the crossover to 30 or 40....or dont run a highpass at all if you have reasonable listening habits. Hi passing a "sub" is typically referred to as a subsonic filter, sub sonic filters are more about avoiding damage to the sub and not wasting a ton of amp power than it is about sound.

At the top of its range you have it set a bit too high.....as I mentioned earlier in this thread, after much trial and error I found that 170hz/24db was about right with the jehnerts, in my system at least.

[kaigoss69]

If you have Morel mids you should run them at about 100hz/24db HP. Any higher and you are not doing them any justice. You will be amazed what a difference that can make. If the crossover is 12db though, you need to stay above 160hz.

[psmitty95]

Originally Posted by kaigoss69

If you have Morel mids you should run them at about 100hz/24db HP. Any higher and you are not doing them any justice. You will be amazed what a difference that can make. If the crossover is 12db though, you need to stay above 160hz.

Yea it's an xd600/6 so 12 db. I have everything set to 174 (i believe 30 clicks on the xd600)

[bmw325i]

I have mine set to 150/12db I will try 120/24db when I have time to mess with it.

[cdgatti]

psmitty - one thing that could be the problem here for you is that the xd600 amp is not that powerful for what it seems you want. I had the same amp, well actually the xd400 powering my doors and underseats and it was not that satisfying. I have morels in the doors and the old kicker ssmb8 underseats which like the jehnerts are great for mid bass not sub bass. I now have a JL HD amp (150w/channel) instead of the 75 for the XD (use the XD for the rears and the center), and the kickers really sound great.

You can approximate this with your system quite easily, first off either unplug the rear speakers OR just power them off the head unit, there is enough power from the hifi head unit to where they give some presence to rear seat passengers and they do nothing for you up front anyway even when amped. then using your xd600, bridge 4 of the channels to power the underseats and the other 2 for the doors. you'll have tons more headroom and the system will sound loads better.

[psmitty95]

Originally Posted by cdgatti

psmitty - one thing that could be the problem here for you is that the xd600 amp is not that powerful for what it seems you want. I had the same amp, well actually the xd400 powering my doors and underseats and it was not that satisfying. I have morels in the doors and the old kicker ssmb8 underseats which like the jehnerts are great for mid bass not sub bass. I now have a JL HD amp (150w/channel) instead of the 75 for the XD (use the XD for the rears and the center), and the kickers really sound great.

You can approximate this with your system quite easily, first off either unplug the rear speakers OR just power them off the head unit, there is enough power from the hifi head unit to where they give some presence to rear seat passengers and they do nothing for you up front anyway even when amped. then using your xd600, bridge 4 of the channels to power the underseats and the other 2 for the doors. you'll have tons more headroom and the system will sound loads better.

Hmm i'll definitely give this a shot then. Noob question but then will I have to readjust the gain or is it fine the way it is after I try them bridged