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#430329 - 10/09/18 11:07 PM Re: Big Project, outstanding outcome [Re: Slimpikins]
Slimpikins Offline
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Registered: 11/19/17
Posts: 237
Loc: New England
OK, well I have had the Gap Band on the turntable with a 12 inch single of "you dropped a bomb on me" playing multiple times over two hours at blistering levels.... the crossovers are cold to the touch. The M1's are at best luke warm at 87 degrees reading from the infrared heat reader and I need to have Bryston lend me a pair of 28B3's to test vs. the M1's.... The 28B3's have a lot more in the power supply back up for dynamic range. Lets see if we can get the PX1's at least above room temperature!


Edited by Slimpikins (10/09/18 11:09 PM)

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#430330 - 10/09/18 11:14 PM Re: Big Project, outstanding outcome [Re: Slimpikins]
Mojo Offline
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Registered: 01/21/07
Posts: 7059
The only possible explanation for the removal of clicks and pops is a built-in notch filter. This pre-supposes the clicks and pops are in a very narrow and well-defined band or bands.

Can you stick a thermocouple in the woofer's air gap? LOL!

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#430331 - 10/09/18 11:38 PM Re: Big Project, outstanding outcome [Re: Mojo]
Gr8_White_North Offline
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Registered: 07/12/09
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Loc: Whitehorse YT
Originally Posted By Mojo
Richard, each of Slim's Ts are sinking at least 20A RMS. That current is displaced not only in the speaker but also the cross-over. The coils can act like heaters if not appropriately designed.


he is goin active so the crossovers are before the amp at least thats what it seemed. forgive my poor comprehension but i see no point in passive external.


Edited by Gr8_White_North (10/09/18 11:40 PM)
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#430332 - 10/10/18 12:06 AM Re: Big Project, outstanding outcome [Re: Slimpikins]
Mojo Offline
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Registered: 01/21/07
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I see. No, they won't be fully active.
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#430335 - 10/10/18 09:07 AM Re: Big Project, outstanding outcome [Re: Gr8_White_North]
bridgman Offline
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Registered: 08/25/04
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Originally Posted By Gr8_White_North
he is goin active so the crossovers are before the amp at least thats what it seemed. forgive my poor comprehension but i see no point in passive external.


Agree that if he is using active crossovers and separate amps per frequency band there shouldn't be a need for passive crossovers as well but I didn't see any mention of active crossovers.

That said, one thing that occurred to me from reading this thread is that the beauty of an external crossover (apart from things like power handling) is the ability to switch to active crossovers and tri-amping without having to change the speaker itself.
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#430337 - 10/10/18 09:38 AM Re: Big Project, outstanding outcome [Re: Slimpikins]
Slimpikins Offline
local

Registered: 11/19/17
Posts: 237
Loc: New England
I am not fully active here. Still using one M1 mono block per Model T, entering into the input stage of the PX1 with all the jumpers connected. The outputs are individual cables feeding each individual section of the Model T's. I cut all the internal wiring and made up new wiring from tweeter section, mids and woofers all dedicated individual runs independent from one another. Each run goes directly to a new input plate Ian supplied which has three separate speaker terminals labeled "high", "mid", "lower". One only has to make sure that they run the interconnects from the output of the PX1 from the appropriate section to the correct speaker bank. It's rather simple. But the external crossover is between the amplifier and the Model T. The internal crossover is no longer functional, it's been disconnected.

If I ever wish to go fully active, I just need to get 2 more amps per Model T and purchase the Bryston fully active crossover which would go between the preamp and the amps.

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#430530 - 11/25/18 09:36 PM Re: Big Project, outstanding outcome [Re: Slimpikins]
Slimpikins Offline
local

Registered: 11/19/17
Posts: 237
Loc: New England
New Addition to the stable.....
I got in a wood veneer black ash Bryston Model T sub woofer. I am now up to three subs, and counting.

The Model T mains are of course up front, the EP800V4Bourbon/Gin switch is to the left at 90 degrees, the EP500V4 is to the rear at 180 degrees and the new, gorgeous Model T sub (105 pounds) is at the right at 270 degrees.

Pretty interesting: the bass is much smoother, more musical, well rounded and just soothing. No big nodes in the room and it's just like being in a small club with a really good bass player mixing in with the music. But the house shakes; I love it.
OK, now Ian said I hit sub nirvana at 3 but 4 is where the amplitude really kicks up a notch along with the smoothed response I am hearing. It's a good thing I am now single, I can do what I want.....


Edited by Slimpikins (11/25/18 09:48 PM)

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#430531 - 11/25/18 10:06 PM Re: Big Project, outstanding outcome [Re: Slimpikins]
Mojo Offline
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Registered: 01/21/07
Posts: 7059
So...now you need a sub up front, right?
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