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Post by rowmat on Aug 6, 2017 4:02:13 GMT -6
Looks like junk but sounds great.
Steel for the plate was cut from the back of an old filing cabinet.
Mixer looks like something you would find in a dumpster.
But what the heck, sounds better the most 'proper' DIY plate reverbs I've heard.
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Post by ragan on Aug 6, 2017 10:44:56 GMT -6
Friggin awesome.
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Post by rowmat on Aug 6, 2017 13:01:50 GMT -6
Mixer housing looks like a cake baking tin. The guy sounds like a Kiwi. |
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Post by kcatthedog on Aug 6, 2017 13:30:42 GMT -6
sounds great ! does it come with beer  |
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Post by rowmat on Aug 6, 2017 13:32:19 GMT -6
sounds great ! does it come with beer No but when you're done you can bake a cake in the mixer case! |
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Post by rowmat on Aug 6, 2017 13:41:55 GMT -6
A number of things I noticed were...
1. The plate itself is not highly tensioned
2. Being cut from an office filing cabinet it is painted which will likely dampen the high end
3. The driver (speaker) is not physically contacting the plate
4. Not sure if/how the piezo's are buffered?
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Post by EmRR on Aug 6, 2017 13:45:58 GMT -6
Plates can definitely be over-tensioned.
The nature of a plate is not to really have high end anyway, but yes, the paint is probably a damping factor.
Multiple DIY reports of speakers simply placed close to a plate rather than driving directly. Drums near my plate will generate a recordable signal, simple vibration.
Piezo's can go into any hi-Z preamp, like a DI input with gain. Simple FET follow by some sort of gain amp.
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Post by rowmat on Aug 6, 2017 14:03:15 GMT -6
Plates can definitely be over-tensioned. The nature of a plate is not to really have high end anyway, but yes, the paint is probably a damping factor. Multiple DIY reports of speakers simply placed close to a plate rather than driving directly. Drums near my plate will generate a recordable signal, simple vibration. Piezo's can go into any hi-Z preamp, like a DI input with gain. Simple FET follow by some sort of gain amp. Any type of driver that is mounted directly to the plate will obviously dampen it to some extent. Contact drivers are often suggested by some DIY'ers but will reduce the ability of the plate to vibrate freely. Even the original EMT driver is not going to match a typical full range speaker's response with the EMT driver effectively having a speaker 'cone' made from a 20lb sheet of steel. Of course this requires some form of equalisation. A potential issue using a free mounted speaker driver is possibly more audible noise eminating from the speaker than an EMT driver but I wouldn't expect a great difference. High impedance buffers (5 to 10 megs) located right at the piezos themselves are better for reduced noise and best frequency response. |
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Post by EmRR on Aug 6, 2017 14:38:31 GMT -6
Yup
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Post by wiz on Aug 8, 2017 18:52:08 GMT -6
I love it... I want one... rowmat build two..give one to me...8) cheers Wiz |
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Post by wiz on Aug 8, 2017 18:53:02 GMT -6
I was thinking, hmm would fit in a wardrobe in the spare room inside the house... I have ethernet run to the house..so I could go AVB
hmmm
cheers
Wiz
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Post by wiz on Aug 8, 2017 18:54:06 GMT -6
So , stupid question time.. two piezo elements placed apart on the single plate...faux stereo, or two plates...?
cheers
Wiz
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Post by johneppstein on Aug 8, 2017 19:26:47 GMT -6
So , stupid question time.. two piezo elements placed apart on the single plate...faux stereo, or two plates...? cheers Wiz Erm, no - it's real stereo. Think about how the sound waves bounce around the plate - the stereo is real. |
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Post by wiz on Aug 8, 2017 19:56:06 GMT -6
So , stupid question time.. two piezo elements placed apart on the single plate...faux stereo, or two plates...? cheers Wiz Erm, no - it's real stereo. Think about how the sound waves bounce around the plate - the stereo is real. thanks... thought i had read somewhere Stereo Plates, had two plates... cool Wiz |
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ericn
Temp
Balance Engineer
Posts: 14,934 
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Post by ericn on Aug 9, 2017 10:17:37 GMT -6
If anybody is interested in one of the Soliddrive drivers my Neighbor and freind works for one of the Companies other divisions, So I can get you a deal I have one hear to play with😁
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Post by rowmat on Aug 9, 2017 20:06:47 GMT -6
So , stupid question time.. two piezo elements placed apart on the single plate...faux stereo, or two plates...? cheers Wiz This one actually has four piezos so it's technically a quad plate! Actually I think utilising extra piezos and then sub-mixing down to stereo is an interesting idea as it theoretically should make for a more complex and richer effect. The piezos mounted at the long ends of the plate produced the widest stereo effect. The side mounted piezos sounded not as wide from what I could tell from the clip. |
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Post by rowmat on Aug 9, 2017 20:11:13 GMT -6
If anybody is interested in one of the Soliddrive drivers my Neighbor and freind works for one of the Companies other divisions, So I can get you a deal I have one hear to play with😁 I have never really been sold on physically attaching something as heavy a direct mounted driver to a reverb plate as the mass will dampen the plate. Whether this is a negative or not would require comparisons but I'm inclined to think either the original EMT style driver or even a closely mounted speaker may be better sound wise. |
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ericn
Temp
Balance Engineer
Posts: 14,934
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Post by ericn on Aug 9, 2017 20:22:44 GMT -6
If anybody is interested in one of the Soliddrive drivers my Neighbor and freind works for one of the Companies other divisions, So I can get you a deal I have one hear to play with😁 I have never really been sold on physically attaching something as heavy a direct mounted driver to a reverb plate as the mass will dampen the plate. Whether this is a negative or not would require comparisons but I'm inclined to think either the original EMT style driver or even a closely mounted speaker may be better sound wise. I mentioned that and they said some guy had the Soliddrive clamped to the frame! Mine is on a wall where I have had noisy neighbors, great for 6 AM revenge! |
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