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Bi amp pros out there I could use some help! First time Bi Amping...

Just picked up a BAT vk 200 for the bass and using my Pass Aleph 5 for the mids and tweets. Ive never played around with bi amping so I apologize in advance for any lame questions My speakers are Dunlavy SC3's original 5.5 nominal load. The pass is 90 wpc at 4 Ohm and the BAT is 200 wpc at 4 ohm so Im guessing around 75 wpc off the Pass Amp and 150 plus with the Bat Amp. My pre amp is a Aleph P and Im running the Single ended through a XLR adaptor (cause the Bat is Balanced inputs only) and the pass Aleph 5 off the XLR outputs of the pre and inputs of the Pass amp. The PASS Pre Amp manual says there is a 6db differential between the RCA and XLR outputs  two and both can be driven at the same time. So the RCA is 9db and the XLR is 15 db. Gain is within 2db on each amp. So whats the best way to do this? Get a custom XLR "Y" connector and drive both off the XLR output of the pre? Or is there a way better way to get the magic? This is past my "WORLD" Map and experience so Id thought Id ask for the smart people for advice. 

Thank you in advance!

-ALLGOOD
128x128haywood310
georgehifi's avatar
georgehifi
10,312 posts
 
Saw it Al, but it's more war and peace than mine, think it could loose him.
And he should just use these for the Bat to give single ended
https://au.rs-online.com/web/p/products/0448351/?grossPrice=Y&cm_mmc=AU-PLA-DS3A-_-google-_-PLA_AU_EN_Connectors-_-Rf_And_Coaxial_Connectors-_-PRODUCT_GROUP&matchtype=&pla-441403653319&gclid=EAIaIQobChMIiOau7Yup4gIVToyPCh12qgSdEAQYAiABEgKPxfD_BwE&gclsrc=aw.ds

Cheers George
lastperfectdaymusic's avatar
lastperfectdaymusic
48 posts
 
Hi, Im about to take delivery of a set of floorstander speakers that do have a separated passive crossover with a pair of speaker connecting posts for the mid/treble, and for bass as do many modern speakers. Fortunately I have four mono Musical Fidelity mosfet amps, a bit old yes, but all 50 watt.
The simple reasoning that supports biamping in this case is that the mono amp supplying the mid/treble speakers will have considerably less load drawn from it during heavy bass passages of music.
There is no doubt that an active crossover system would be best of all as that same mono amp would only have to amplify a given range of frequencies.
However as I firmly believe that this new speaker set has been designed by engineers etc with infinitely better experience and measuring equipment than I have, the best option that I have is to maximize their design by biamping them.

lastperfectdaymusic's avatar
lastperfectdaymusic
48 posts
 
I will leave a report on the differences I find between single and biamp on  this discussion in a couple of weeks. I have many years listening experience, so it should be relevant. So if you would like to know, then click the `Follow this discussion` at the top!
sleepwalker65's avatar
sleepwalker65
832 posts
 
To the naysayers: biamping is definitely advantageous with the separation of reactive energy from the woofers from the mid/high drivers. You will experience cleaner midrange and treble if you use amplifiers rated with enough power to stand on their own in non-biamp configuration. I recently upgraded my amps, quadrupling the available power to drive the same speakers, and the difference is very noticeable. 

Next stop: experimenting with subwoofer swarms. 


haywood310's avatar
haywood310 OP
56 posts
 
Thank you all for the detailed responses! It means a lot to a guy like me, or just me. Take care and Happy early Memorial Day weekend to any Vets.

-Allgood 

PS I didnt add that I have two Hsu Research ULS 15 sealed subs that I am running stereo via speaker level from the Dunlays but no high pass just for the foundation. Was thinking of adding a third to try and get that swarm effect.Thank all of you!
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