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Old 10th September 2012, 01:38 PM   #21
john65b is offline john65b  United States
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Is the soundlab mod just using a toroidal tranny??

I I could only find a high VA 100:1 toroidal tranny I would try it crossoverless myself..
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Old 10th September 2012, 01:58 PM   #22
tyu is offline tyu  United States
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The sound lab mixer.... has caps only!...no res like Acoustat....some have move away from the toroidal tranfourmer.....when i saw this i move on the no crossover mod for the 121...goodluck
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Old 10th September 2012, 03:46 PM   #23
john65b is offline john65b  United States
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Do you have a circuit schematic of the soundlab mixer? It sits in front of the input transformer? Sounds like it is a crossover itself.
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Old 10th September 2012, 04:37 PM   #24
tyu is offline tyu  United States
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Default Soundlab interface.......

Here a pic of the older soundlab interface....an this is the crossover for the toroidal high frc crossover...thats moded out.......as with the Acoustat C mod.........eats power like king kong.....but with the older SS amps C mod help some ....some say a lot....but it a crossover C mod was for the Amp...not the panel....the A is for the panel an the best sound at the time...an still better than most!.........C not need to day......
well{ not by me!}
So dont get all freaky on me now...this is the best sound i have got out of any ESl.....sound like quad 57 in a lot of way.....that a big deal ....for me...
i have done every thing to the Acoustat 121 interfaces... but pump them in my vanes.......An yes i have had the soundlabs...to much panel..to drive with any amp i can live with.....
long live Acoustats......goodluck
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File Type: jpg crossover-15B15D[1].jpg (33.5 KB, 54 views)
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Old 15th September 2012, 01:53 PM   #25
john65b is offline john65b  United States
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tyu - on the circuit diagram - the three connector jobbie - is that a pot or a switch?
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Old 15th September 2012, 02:20 PM   #26
tyu is offline tyu  United States
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Pot!......most take it out ...say it sounds better.....but then some take all this out...it lets one drive the SL with tube amps an anyother amp as i see it...this is like the Acoustat C crossover mod...with a coil added....to get the best base an over all best sound..... just set the Acoustats up like the SL....know res in the Mixers...just caps...this is key!.....goodluck
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Old 15th September 2012, 05:15 PM   #27
john65b is offline john65b  United States
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So getting rid of the pot gives you this?
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