JBL Pro 3677 Have arrived!!! - Page 21 - AVS Forum | Home Theater Discussions And Reviews
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post #601 of 613 Old 08-10-2016, 01:36 PM
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Originally Posted by cdy2179 View Post
Have you run xt32 on them? It'll get rid of the Xcurve and make them nice and flat to around 15k.

But yeah... they are an insane value.
I have a Marantz SR7007 so I used XT. It did a great job.
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post #602 of 613 Old 08-10-2016, 06:16 PM
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Some more pictures.

Last edited by Umar_Naseer; 08-10-2016 at 06:24 PM.
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post #603 of 613 Old 08-11-2016, 04:32 AM - Thread Starter
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Looking good. Can you toe the mains in toward the center of the listening area? Like any speaker they really open up with a little tweaking. I'd try aiming them at the center headrest to start with.. maybe even a little more toe in.

Also You really need to get them up some.. the screen frame is smack dab between the two drivers.. I'd lift them up off the floor so the entire speakers are behind screen.

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post #604 of 613 Old 08-11-2016, 08:07 AM
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Originally Posted by cdy2179 View Post
Looking good. Can you toe the mains in toward the center of the listening area? Like any speaker they really open up with a little tweaking. I'd try aiming them at the center headrest to start with.. maybe even a little more toe in.

Also You really need to get them up some.. the screen frame is smack dab between the two drivers.. I'd lift them up off the floor so the entire speakers are behind screen.
Thanks for the suggestions. I'll be building stands soon.
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post #605 of 613 Old 08-11-2016, 09:39 AM - Thread Starter
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Thanks for the suggestions. I'll be building stands soon.
Sure thing!

Be sure and give a detailed review after you've had enough time to break them in and lived with them for a little while.

They take quite a while to break in. Just play them at moderate volume when you're not home etc. They get smoother and smother as time goes on.
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post #606 of 613 Old 08-22-2016, 07:52 PM
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I got the 3677s up off the floor and towed in. I let Audyssey do it's thing and they sound even better now! I am powering them with 3 channels from an Emotiva XPA-5. The only thing is that Audyssey sets the 3677s to -12. Anyone else experience this?
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post #607 of 613 Old 08-22-2016, 10:31 PM
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Quote:
Originally Posted by Umar_Naseer View Post
I got the 3677s up off the floor and towed in. I let Audyssey do it's thing and they sound even better now! I am powering them with 3 channels from an Emotiva XPA-5. The only thing is that Audyssey sets the 3677s to -12. Anyone else experience this?
That's normal as the 3677 is highly sensitive.
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post #608 of 613 Old Today, 05:23 AM - Thread Starter
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So this weekend I decided to do the Insulation Mod I did on the first trio of 3677s I had. As I've said before JBL does a really bad job of lining the cabinets. I bought some of the cheap r13 cut for wall cavities wrapped in plastic. Cut 2 pieces to 30" per cabinet. Made a thin cut down the plastic and removed the plastic so I had just insulation. Removed the CD and placed it on top of the cabinet. Removed the woofer and disconnected it. Ran each piece of insulation up through the woofer cutout and into the top. Put about 4 staples in it and did the other side.

As I've said before the 2035hpl is very similar to the 2226 and r13 seems to be the insulation of choice in the 4pi and the DIY world in general. It definitely makes it even smoother and takes care of resonance. I mean the woofer is responsible for the majority of the vocals. This is a 20 minute mod to do all 3. I'd say it's a must!



Bare places



The lining is maybe 1/2".



As seen in the pics the lining job by JBL is quite pathetic. Super thin and just bad all around. Kinda odd being the cabinet is very well built as well as everything else about the speaker.
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Last edited by cdy2179; Today at 05:32 AM.
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post #609 of 613 Old Today, 09:03 AM
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Will Roxul fibreglass or poly fill do instead of the R13? Not sure if I can get the R13 locally.

My LCRs arrived days ago. Here's a bad mobile pic of them sitting in the temporary setup until my new place is ready. They really made the screen looked tiny! Hopefully they will eventually end up behind a baffle wall. Meantime, I'll find time to prop some Vibrapod feet under.

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post #610 of 613 Old Today, 09:08 AM
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Will Roxul fibreglass or poly fill do instead of the R13? Not sure if I can get the R13 locally.

My LCRs arrived days ago. Here's a bad mobile pic of them sitting in the temporary setup until my new place is ready. They really made the screen looked tiny! Hopefully they will eventually end up behind a baffle wall. Meantime, I'll find time to prop some Vibrapod feet under.
No they make your subs look small
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post #611 of 613 Old Today, 09:14 AM
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No they make your subs look small
Haha... the 2 pandas are sitting on the 8340s. But you are damn right! The S1 Cap on the right does look diminutive in comparison too
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post #612 of 613 Old Today, 09:17 AM
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I didn't know those were your surrounds. That would make them little subs...lol
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post #613 of 613 Old Today, 09:56 AM - Thread Starter
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Glad those aren't your subs.. .

As for Roxul.. I'm sure it would work however the fluffy insulation is made for 3.5" wall cavities so it's thicker and extends lower in frequency. It's also looser and won't effect cavity size really. It's just regular insulation used between wall studs and should be easy to find for under $20 at any Lowe's, Home Depot etc. The fluffy is used to line and stuff boxes because it works very well. Don't stuff the box by the way.. just line the back and sides.
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