New Sundown 100.4
09-26-2008, 03:12 PM
#1
New Sundown 100.4
Thought I would give the heads up on the new Sundown Audio 100.4. Great for active setups, coming mid November... Pm for more information.
Now you can do just about anything with it!
A little SAX-100.4 history:
SAX-100.4 -- Original model
SAX-100.4B -- Updated crossover ranges
SAX-100.4C -- Upgraded from 50-amp to 70-amp power supply transistors
SAX-100.4D -- This is the newest model
-----
The following functionality will be had with the crossovers:
ALL CHANNELS:
Subsonic @ 10 Hz - 500 Hz (always on, can be used as the HPF for a band-pass setup in conjunction with the LPF)
HPF @ 50 Hz - 500 Hz w/ x10 button (selectable 12dB / 24dB slope)
LPF @ 50 Hz - 500 Hz w/ x10 button (selectable 12dB / 24dB slope)
-----
So, what will you be able to do with the new model that you couldn't do before ?
1) You can bridge the amp and actively band-pass a midrange / midbass thanks to x10 functionality on both HPF and LPF on both sets of channels.
2) You can cross-over tweeters much lower with the 24 dB slopes. I have had several requests to implement this from people wanting to use planar tweeters as well, as these require steeper slopes.
3) You can experiment with overlap with the selectable slopes.
4) Most importantly for reliability and consistency... the small sub-cards that hold the crossovers will be re-tooled as double sided boards instead of single-sided. Almost all problems with previous SAX-100.4s were the result of solder problems on the single sided crossover PCB - as uncommon as these problems were we took care of the source!
All of these changes will result in a bit longer amp to fit the new crossover boards (about 1.5" longer), but will be worth it for the SQ enthusiasts who will appreciate this type of functionality.
Now you can do just about anything with it!
A little SAX-100.4 history:
SAX-100.4 -- Original model
SAX-100.4B -- Updated crossover ranges
SAX-100.4C -- Upgraded from 50-amp to 70-amp power supply transistors
SAX-100.4D -- This is the newest model
-----
The following functionality will be had with the crossovers:
ALL CHANNELS:
Subsonic @ 10 Hz - 500 Hz (always on, can be used as the HPF for a band-pass setup in conjunction with the LPF)
HPF @ 50 Hz - 500 Hz w/ x10 button (selectable 12dB / 24dB slope)
LPF @ 50 Hz - 500 Hz w/ x10 button (selectable 12dB / 24dB slope)
-----
So, what will you be able to do with the new model that you couldn't do before ?
1) You can bridge the amp and actively band-pass a midrange / midbass thanks to x10 functionality on both HPF and LPF on both sets of channels.
2) You can cross-over tweeters much lower with the 24 dB slopes. I have had several requests to implement this from people wanting to use planar tweeters as well, as these require steeper slopes.
3) You can experiment with overlap with the selectable slopes.
4) Most importantly for reliability and consistency... the small sub-cards that hold the crossovers will be re-tooled as double sided boards instead of single-sided. Almost all problems with previous SAX-100.4s were the result of solder problems on the single sided crossover PCB - as uncommon as these problems were we took care of the source!
All of these changes will result in a bit longer amp to fit the new crossover boards (about 1.5" longer), but will be worth it for the SQ enthusiasts who will appreciate this type of functionality.
10-08-2008, 09:17 AM
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