Infinite baffle/JL audio MX 650's/Rev 8's install, looking for music to tune

[RacingSims]

Hello all, I have just finished an install of one pair of Rev 8's, 6 in boat MX650's and the JL Audio 10" infinite baffle sub in the factory location. While the inboats and sub sound VERY good I feel I am missing something with the Rev 8's.
After talking with Rob at Wetsounds he commented that when all is said and done I sould be between 1/2 and 3/4 gain on the Wetounds HT6 (which is bridged channles 1-4), 5-6 are for the sub. I am using the 420SQ as well. My gain setting prior to the Rev 8 distorting a bit is roughly 1/3. While I may be cutting hairs my point was that its not close to 3/4 gain that Rob mentioned. With this being said I was expecting a lot more out of the Rev 8's. I am hoping it is something I am overlooking. Thanks

Also what are you using for Music to tune the system?

[cedarcreek216]

Not related to the Rev 8's, but aren't you amazed at how much better the JL IB sounds over the stock sub? I hope I gave good advice on that swap and the trim ring and everything associated with it.


Sent from my iPhone using Tapatalk

[RacingSims]

Not related to the Rev 8's, but aren't you amazed at how much better the JL IB sounds over the stock sub? I hope I gave good advice on that swap and the trim ring and everything associated with it.


Sent from my iPhone using Tapatalk

Indeed. I used the trim ring on the outside (gave the sub 1" clearance to side of the hull) used some sound deadening material in the panel. I did not take the panel apart I simply removed the seat and removed the 6.5" speaker that was there and placed the deadening material where I could reach. I added a couple of photos to show how Nautique added fiberglass to where the sub mounted, and I painted the ring black (I will black vinyl cover it this fall). Foe those thinking of this sub change I recommend it a great deal. I am using a bit more power than the stock sub but what a difference. For the record I am only using 300 watts. Now to make this Rev 8 sing!!

[David Analog]

3/4 gain on a bridged amplifier into a 4-ohm load sounds like a lot of gain. It also depends on the entire signal chain prior to the amplifier including the HU voltage, the EQ front panel, and the internal EQ gains. So it will vary from system to system.

If you purchased your gear from Odin at Earmark Marine (on-line store), he has scripted the best tuning procedure. So check in with him.
Odin has been a musician for 30 years, is a mobile electronics vet for nearly 25 years, and for 10 years has been the in-house sound engineer for live artists at a local music venue. No one understands gain structure and tuning like Odin.

[David Analog]

Btw, I did a software update and since then typing on this forum is very difficult. The above post took me forever. Anyone know a solution?

[RacingSims]

I did buy from Odin and thanks again.

[David Analog]

Then you are in great hands.

Btw, I like to use Dave Matthew Band, Crash, So Much To Say. Not because it is on my playlist, but because it is a clean, hot (lots of gain) recording, mixed just a bit bright, and is dynamic and dense, with a broad range of instrumentation. Just right to expose the system limits with real music.

[lucky7t]

Infinite baffle/JL audio MX 650's/Rev 8's install, looking for music to tune

My four rev 8's sound great. Are you looking for more mid tones out of them of bass?

I noticed they are very loud

I'm impressed on the amount of fiberglass behind your speaker. Should you still put the trim ring behind the speaker ?? That looks very sturdy

[MLA]

"I am using the 420SQ as well. My gain setting prior to the Rev 8 distorting a bit is roughly 1/3"

That sounds pretty close to normal IMO, especially bridged as david noted and with an SQ version WS-420. Have you adjusted the EQ's internal gain levels?

"With this being said I was expecting a lot more out of the Rev 8's."

What exactly is it you think is lacking? Volume, SQ, mid-bass......? Gain is a setting is a huge part, but theres more to it.

[RacingSims]

I guess I would say SQ. It seems scratchy. Sorry not a real audio term but honestly I think the MX 650's sound just as good or actually a bit cleaner. I have Klipsch home speakers so the "horn" is not something I need to get used to. I have the Eq basically flat however I did adjust the highs out of the tower as I tried to remove the scratch from it. I did notice however that the gain on input 3 and 4 also makes adjustments to the gain. I thought by selecting 2 channel on the HT6 that 3-4 would be controlled by 1-2. If that is not the case after adjusting 1-2 where do you place 3-4 input gain. Thanks guys.

[MLA]

Thats the input source selection only. That determines where chnls 3/4 and 5/6 get their source signal from, whether its passed through from the 1/2 inputs or they get it direct form their corresponding 3/4 or 5/6 RCA inputs. All chnl adjustments for 1/2, 3/4 and 5/6 still need to be done independently, using the designated controls.

Where is the cross-over filter set?
Cross over filter?
Make absolutely sure the head-units internal EQ is set to flat or off. Also the "Loud" feature. These can kill sound quality
Does your head-unit have a CD player? If so, use some store bought or non compressed music on CD to test an tune.

[David Analog]

Also, bridging an amplifier into a subwoofer and bridging an amplifier into fullrange (or highpass mode) is a very different matter. There are some steps that you can take that will make a difference in SQ that aren't covered in the manual. Odin will make sure you are doing it correctly.

[RacingSims]

Thats the input source selection only. That determines where chnls 3/4 and 5/6 get their source signal from, whether its passed through from the 1/2 inputs or they get it direct form their corresponding 3/4 or 5/6 RCA inputs. All chnl adjustments for 1/2, 3/4 and 5/6 still need to be done independently, using the designated controls.

Where is the cross-over filter set? Started with 90Hz for the towers, 80 hz for the sub
Cross over filter? High for the towers low for the sub
Make absolutely sure the head-units internal EQ is set to flat or off. Also the "Loud" feature. These can kill sound quality. I will triple check
Does your head-unit have a CD player? If so, use some store bought or non compressed music on CD to test an tune.I will do just that.

Also, bridging an amplifier into a subwoofer and bridging an amplifier into fullrange (or highpass mode) is a very different matter. There are some steps that you can take that will make a difference in SQ that aren't covered in the manual. Odin will make sure you are doing it correctly.

Thanks All/ MLA/ David.

With all that I read about the Rev 8's I know I'm missing something!

[David Analog]

RS,
Right off the bat, I see crossover selections that I don't like.
Will an 8-inch tower speaker in a very compact pod play down to 90 Hz? Sure. But at what amplitude at higher power levels?
Also the IB sub is already at about half power around 50 Hz (just like a typical 10" in a small sealed box) so at 80 Hz you are at half power also. Not much bandwidth, just a narrow hump.
With that corrected and bridging correctly you will make headway.
I'm sure Odin is slammed in June, but carve out some time with him. He'll make a huge difference.

[RacingSims]

I spoke with Odin and he communicated new crossover selections and a alternate way to configure the amp. I am to place (2) Y adapter on the Tower IN RCA's. (1-3,2-4) Then use the HT6 as a 4 channel amp instead of the current 2 channel configuration it is in now.