Is bi amping worth it ?

If your bass is lacking it's likely a component issue, not a "power" issue.  In my experience McIntosh is not known for their bass performance.  I'm not saying it's bad, but it doesn't have the reputation of say Krell for example.

So, you can solve this a few ways.

1. Add a quality subwoofer that can integrate with your speakers.  I've used JL Fathoms in the past and they were excellent.  There are lots of great subs out there but they do require effort to integrate them properly.  The automatic configuration SW the JL had was really good.  This is not a pitch for JL as many other offer the same type of auto setup.

2. Look at other components that have better bass performance.  I've found that the preamp is typically the one component that will make the biggest change.  Maybe you could audition one from a local dealer just to see if it helps.

3. The following is my preferred solution which is to use a source (DAC) that has some DSP.  Purists will hate this idea but that's ok.  The DSP allows you to tailor the sound to your liking.  Adding a few dB of gain in the low bass region can really make a difference.  Again, I'd recommend auditioning something and playing with it for a weekend to see if it solves your issue.

Good luck with your journey!  I'm curious to see how your experiment works out.

@hardhattg Wrote:

If I am not mistaken it seems that at the very least , that bi amping my khorns , using one mono block for both low frequency , woofers in both speakers and the other mono block for the midrange and tweeters in both speakers . That should give me the ability on certain music to increase power to the low frequency amp if I desire to ?  I believe this is correct and may be all I need.

You’re mistaken. Passive or active bi-amping a stereo pair of speakers, requires four channels of amplification. You can use four mono amps or two stereo amps I prefer four mono amps. 

Mike

@ditusa

i now understand true bi amping should require four mono blocks or two stereo amplifiers.   I was going to run both sets of low frequency from one mono block and both mid and high from the other mono block .  
 

no chance of buying two more McIntosh 601s 

I was going to follow this direction ? 
 

To passively bi-amp Klipschorn speakers with two McIntosh 601 monoblocks, you must remove the jumpers on the speakers' binding posts and follow a "vertical" bi-amping configuration, where each speaker has its own dedicated amplifier

. 

This setup uses four separate speaker cables and requires a preamplifier with two sets of output jacks (Pre Out 1 and Pre Out 2) for the left and right channels. The Klipschorn's internal passive crossover remains in use to divide the signal frequency to the speaker drivers. 

Required equipment

• Klipschorn speakers: Ensure the terminal jumpers connecting the high and low frequency posts are removed.
• McIntosh 601 monoblock amplifiers:You will use two of these, with one monoblock per speaker.
• Preamplifier: Must have two sets of left and right pre-outputs (e.g., Pre Out 1 and Pre Out 2).
• Speaker cables: You will need two pairs (four total cables) of high-quality speaker cables.
• Interconnects: You will need two pairs (four total cables) of interconnects. 

Connection steps

Step 1: Connect the preamplifier outputs

1. Run the first pair of interconnects from the preamplifier's Left Pre Out 1 and Right Pre Out 1 to the input jacks of the two McIntosh 601 monoblocks.
2. Run the second pair of interconnects from the preamplifier's Left Pre Out 2and Right Pre Out 2 to the input jacks of the same two McIntosh 601 monoblocks.
   This will feed a full-range signal from your preamplifier to both amps for each channel, which is required for passive bi-amping. McIntosh recommends using balanced connections if possible for the best performance. 

Step 2: Connect the monoblocks to the speakers

1. For the Left Speaker:
   • Connect the positive output terminal (+ or red) of the first McIntosh 601 to the positive input terminal (+ or red) of the Klipschorn's High Frequency section.
   • Connect the negative output terminal (- or black) of the first McIntosh 601 to the negative input terminal (- or black) of the Klipschorn's High Frequencysection.
   • Connect the positive output terminal (+ or red) of the second McIntosh 601 to the positive input terminal (+ or red) of the Klipschorn's Low Frequencysection.
   • Connect the negative output terminal (- or black) of the second McIntosh 601 to the negative input terminal (- or black) of the Klipschorn's Low Frequency section.
2. For the Right Speaker:
   • Repeat the same process for the right speaker, using the other two McIntosh 601 monoblocks to power the high and low-frequency sections separately. 

Why this method works

• Vertical bi-amping: This configuration uses one McIntosh 601 per channel, with one amplifier channel dedicated to the high frequencies and the other to the low frequencies. This provides better channel separation since each amplifier works independently on a mono signal.
• Passive crossover: The Klipschorn's internal passive crossover remains in place to split the frequencies after the amplification stage. The jumpers must be removed to allow the different amplifier signals to go to the correct speaker driver.
• Signal path: The preamp outputs a full-range signal to all four monoblock inputs. The Klipschorn's terminals direct the amplified high and low-frequency signals to the corresponding drivers via the internal crossover. 
   
• this won’t work ?