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Multi-Way Conventional loudspeakers with crossovers

SynTripP: 2-way 2-part Virtual Single Point Source Horn
SynTripP: 2-way 2-part Virtual Single Point Source Horn
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Old 9th April 2017, 10:32 AM   #581
FinBot is offline FinBot  Australia
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I just got a 4 channel powersoft amp (700 watts per channel into 4) for the mids!

Also have a Lab Gruppen C10:4 for the highs.

Running a Soundweb DSP for the speaer management.
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Old 10th October 2017, 05:20 PM   #582
Mrscy is offline Mrscy
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Art, can the cabinet be scaled to use 8", or 12" drivers?
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Old 3rd December 2017, 06:42 AM   #583
grec13 is offline grec13  United States
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Aloha Art and others.

Iím thinking of a home version of the Syntripp.
Drivers: one B&C 10CL51 and JBL 2435 on JBL 2384 WG.
Iím aware of the distortion issue, but hoping that for home use the driver will not produce much of it and can survive the 650Hz loading.
I can easily fit Midwoofers on the side as originals, but prefer to place one only on the bottom part of the horn, as Bwaslo did on his new Synergy, and loaded it from 200Hz to 650Hz. The WG is only 295mm deep (11,6Ē).
The driver JBL 2435 is 59mm deep. Assume that diaphragm is 10 mm from the top (canít find exact info) makes it 49mm. The WG 2384 plate is additional 6.1mm, so total is about 55mm.
What do you guys think about it and also - what exact distance (instead of 47.6mm as on original) should be from the throat to the mid-ports referring to attached picture?
Thank you all.
Sergey
Attached Images
File Type: png SynT - Copy.PNG (35.6 KB, 494 views)
File Type: jpg SynT-one.jpg (97.8 KB, 493 views)
File Type: jpg SynT-one2..jpg (95.6 KB, 493 views)
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Old 3rd December 2017, 06:57 PM   #584
weltersys is offline weltersys  United States
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Quote:
Originally Posted by Mrscy View Post
Art, can the cabinet be scaled to use 8", or 12" drivers?
The size could be scaled, but the bass reflex tuning and acoustic crossover frequencies will be different.
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Old 3rd December 2017, 07:15 PM   #585
weltersys is offline weltersys  United States
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Quote:
Originally Posted by grec13 View Post
Aloha Art and others.

Iím thinking of a home version of the Syntripp.
Drivers: one B&C 10CL51 and JBL 2435 on JBL 2384 WG.
Iím aware of the distortion issue, but hoping that for home use the driver will not produce much of it and can survive the 650Hz loading.
I can easily fit Midwoofers on the side as originals, but prefer to place one only on the bottom part of the horn, as Bwaslo did on his new Synergy, and loaded it from 200Hz to 650Hz. The WG is only 295mm deep (11,6Ē).
The driver JBL 2435 is 59mm deep. Assume that diaphragm is 10 mm from the top (canít find exact info) makes it 49mm. The WG 2384 plate is additional 6.1mm, so total is about 55mm.
What do you guys think about it and also - what exact distance (instead of 47.6mm as on original) should be from the throat to the mid-ports referring to attached picture?
Thank you all.
Sergey
Sergey,

JBL's 4622/4622N crosses the 2x15" LF at 750Hz and the HF 2430/2384 at 630Hz.
With the 10" cone contour filled with allowance for X-lim, the acoustic crossover can be around 1000 Hz, with a single 10" the JBL 2435 should have no problem "keeping up".

Make the 10" exit ports as near to the throat as possible.
The 2384 is an interesting "wave guide", have you found any polar charts for it?

Aloha,
Art
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Old 4th December 2017, 12:52 AM   #586
grec13 is offline grec13  United States
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Thank's for your reply, Art.
Even there are a lot of praise for that combo I can find no polars for 2384wg.
I think that JBL did "thinking" part and testing too, so I have to worry about how to make singularity between mids and highs.

Thank's again for xover advice.
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Old 5th December 2017, 12:31 AM   #587
djk is offline djk
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If you expect the 2435 to handle high power it needs to be heatsinked.

An aluminum plate mounted between the driver and horn will do.
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Old 5th December 2017, 03:41 AM   #588
grec13 is offline grec13  United States
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Thanks DJK.
Actually I got 2435 and that WG based on your opinion: "2435 in 2384wg sound magnificent from 630hz up".
I want to use 2A3 amplifier for that, with 1wt/110Db the high power for home use is not needed.
I have several Synergy projects: PSE 144, the first version of Bwaslo Synergy and I'm still on a middle of his second version, and also interested in finding out the different xover points and improvement of the High End components (if there any).
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Old 5th December 2017, 10:10 PM   #589
djk is offline djk
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I still love that horn and driver.

My point was that for PA the driver has a sil-pad thermal washer and is attached to either a metal horn, or a metal plate is installed between the driver and horn (with a heatsink on the plate).
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Old 7th December 2017, 08:06 PM   #590
grec13 is offline grec13  United States
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In previously built the Syntripp test module (means build from garbage) I tried several woofers: single 10" B&C , JBL 2123, vintage Grundig, and pair of 6.5" Isophons, Faital's and Aura's.
Below 900hz both of them sound quite close (Aura was the worst). I think the horn and cutoff frequency dictate the sound there. Of all of them Isophones have nicest and rich tone.
I was also surprised how close the measurement was to PSE144 . Unfortunately can't find all of it, but at least some.
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Last edited by grec13; 7th December 2017 at 08:08 PM.
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