how will plexiglass affect subs?

i'm doing an install on a 08 Ford Escape. I'll be mounting 2 10" subs and an amp in the back of the vehicle, but has to retain all cargo space. I'll be building a mdf floor with a plexiglass insert for the subs and amp to sit underneath. My question is how will this affect the subs? I haven't picked out the subs or amp for this yet.

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Dustin Rockney

Rockstar Autosports

As long as the plex is of adequate thickness to act EQUIVALENTLY to MDF, it won't affect them at all.

If you make it to thin, you will have problems, as it will eventually crack, and the vibration of the walls will cause a loss of output.

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

If that is so, why did you choose oak in well-braced box instead of MDF?

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My simple setup on a 2008 Nissan Frontier:
Alpine IVA-W505
Alpine PXA-H100
Audison LRx 6.9
Dynaudio MD 100 (full active)
Dynaudio MW 162 (full active)
Pioneer TS-W258D4 10" shallow mount sub

i'm not sure I understand your question. I didn't choose oak.

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Dustin Rockney

Rockstar Autosports

Im sorry. That question was for haemphyst.

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My simple setup on a 2008 Nissan Frontier:
Alpine IVA-W505
Alpine PXA-H100
Audison LRx 6.9
Dynaudio MD 100 (full active)
Dynaudio MW 162 (full active)
Pioneer TS-W258D4 10" shallow mount sub

gauge010 wrote:

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If that is so, why did you choose oak in well-braced box instead of MDF?

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OK... I guess I don't understand the question, either. I didn't choose oak, I chose pine plank for my latest, and my reasoning for it is included in the thread.

Secondly, what does MY choice of material for MY enclosure have anything whatsoever to do with my answering of HIS question regarding the properties of plex? Let me answer that... NOTHING. My answer to him correctly and accurately provided him with the information he was seeking. He asked if plex would change or affect the way the woofer sounded, and my answer was complete and valid.

If you have the need or desire to challenge me about something in a previous thread, either start a new thread, or do so in the original thread. I'll happily answer, rebut, rebuke, defend... THERE. It's not necessary to hijack a thread with an answer that has nothing to do with the original poster's question.

haemphyst wrote:

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As long as the plex is of adequate thickness to act EQUIVALENTLY to MDF, it won't affect them at all.

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...OR whatever OTHER material you might choose as a box building substrate, be it oak, MDF or pine plank. Whatever plexiglass you use, my basic response boils down to this: Make sure it's strong enough to not flex under the stresses of the air pressures within the cabinet. If building a vented cabinet, it must be thicker, as the air pressures inside a vented cabinet can FAR exceed the pressures within a sealed cabinet.

Does THIS response make you happy, gauge010?

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

Thank you. I just wanted to clarify one thing. The plexiglass will not be part of the box. The box will be built separate and the plexiglass will just be part of the new floor covering the box and amps so the cargo space can still be used. Thanks.

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Dustin Rockney

Rockstar Autosports

Thats what I thought. The plexi will defeat most of the sound if the box is encased in your raised floor. I would try to find the most ideal locations for ports, and go that route. If your real creative, try going bandpass.

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This is what I do for FUN!

haemphyst wrote:

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gauge010 wrote:

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If that is so, why did you choose oak in well-braced box instead of MDF?

---

OK... I guess I don't understand the question, either. I didn't choose oak, I chose pine plank for my latest, and my reasoning for it is included in the thread.

Secondly, what does MY choice of material for MY enclosure have anything whatsoever to do with my answering of HIS question regarding the properties of plex? Let me answer that... NOTHING. My answer to him correctly and accurately provided him with the information he was seeking. He asked if plex would change or affect the way the woofer sounded, and my answer was complete and valid.

If you have the need or desire to challenge me about something in a previous thread, either start a new thread, or do so in the original thread. I'll happily answer, rebut, rebuke, defend... THERE. It's not necessary to hijack a thread with an answer that has nothing to do with the original poster's question.

haemphyst wrote:

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As long as the plex is of adequate thickness to act EQUIVALENTLY to MDF, it won't affect them at all.

---

...OR whatever OTHER material you might choose as a box building substrate, be it oak, MDF or pine plank. Whatever plexiglass you use, my basic response boils down to this: Make sure it's strong enough to not flex under the stresses of the air pressures within the cabinet. If building a vented cabinet, it must be thicker, as the air pressures inside a vented cabinet can FAR exceed the pressures within a sealed cabinet.

Does THIS response make you happy, gauge010?

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I guess you misunderstood my question. I dont wanna challenge you Almighty Haemphyst. It was a legitimate question and not a challenge. A lot of people say that they choose this material over this material based on what it sounds and thats confusing to newbies like me. But I guess that clears it all up.

I apologize for not being able to comprehend the reason why you chose pine for your latest enclosure. The reason YOUR choice of material for YOUR box is relevant to HIS question 1) is because the "myth" or "misconception" is that material matters and 2) your opinion matters. Lets not get snide with our comments over here sir. Everyone knows your level of knowledge with regards to all this stuff. And we all respect you for that. I just hope that the time never comes when your credibility will be tainted by accusations of intellectual arrogance.

Peace!

G.

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My simple setup on a 2008 Nissan Frontier:
Alpine IVA-W505
Alpine PXA-H100
Audison LRx 6.9
Dynaudio MD 100 (full active)
Dynaudio MW 162 (full active)
Pioneer TS-W258D4 10" shallow mount sub

i was thinking the bandpass route, except I'm not sure how good of a bandpass i can build with the limited amount of space i have to work with. I'm already cutting out part of the floorboards and dropping them down a few inches to get all the space i can. This setup does not need earth shattering bass but must sound good. no "muddy" bass will be accepted by the customer. primary music played will be rock.

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Dustin Rockney

Rockstar Autosports

d_rock_81 wrote:

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i was thinking the bandpass route, except I'm not sure how good of a bandpass i can build with the limited amount of space i have to work with. I'm already cutting out part of the floorboards and dropping them down a few inches to get all the space i can. This setup does not need earth shattering bass but must sound good. no "muddy" bass will be accepted by the customer. primary music played will be rock.

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What subs are you using? I wouldn't really use bandpass for rock as it will typically lead to "muddy" sound which is what you are trying to avoid. If output isn't the main concern then there isn't really much of a reason to use bandpass anyways.

i was just thinking bandpass because i could then incorporate the false floor into the box design. i haven't picked out subs yet. With the cost of my fabrication they will be limited to what they can run at the moment.

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Dustin Rockney

Rockstar Autosports