[Bi-amping Heresy (I) with 2 Crown D75s]

just closing the loop

 

they were set up and played last Thursday - Sunday somewhere in Bandera county Texas. I lost the photo of them set up outside...attached is the mobile set up used to power them.

 

THEY SOUNDED INCREDIBLE

[Bi-amping Heresy (I) with 2 Crown D75s]

11 hours ago, JohnA said:

There is little to be gained by biamping Heresies.  Modifying the cabinets and crossovers to separate the the woofer from the HF would stop me. 

 

However, if bridged for mono, their approximately 100 watts each will be a perfect match for your vintage Heresies.  Heresies protect their tweeters very well.  Dinna fash a whit about your tweeters.  I'll recommend placing the speakers in or near a corner to boost the bass output so you're not tempted to turn up the bass knob and put your woofers at some risk.  

my mistaken use of the term bi-amp.  as you correctly write i plan to bridge for mono two Crown D-75 amps and feed each heresy with a dedicated ~100 watts.

 

Ceptorman - i hope you dont hear them, they'll be in bandera county, but ping me if you do and i'll turn them down

[Bi-amping Heresy (I) with 2 Crown D75s]

001 - thanks for the words of caution

 

i dont intend to blast the volume. just some background tunes for a group of 13 guys at a brangus ranch in the texas hill country that will dig the vintage set up and sounds outdoors. they wont be volume abused. 

 

no way i'll ever sell my heresys. they are literally the first speakers i ever bought.  $700+ in 1981

[Bi-amping Heresy (I) with 2 Crown D75s]

again, thanks. i'll take the advice and go with one amp.

 

i had planned to use a rockville preamp with a bluetooth interface. it has separate R/L left TRS inputs and outputs. i had planned to send one output/channel  to each amp (running in mono mode)

 

i'll admit that most of the energy behind this plan was the enjoyment of seeing and hearing  two 40+ year old classic Crown amps driving a pair of one-owner 40+ year old Hersey gen 1s.  i have collected a vintage rack mount case, preamp, power supply and EQ. the set up looks super retro, but since i had no experience with amping each channel separately i thought i had better get some coaching

 

(....yeah, i know...old guy stuff...guilty as charged)

[Bi-amping Heresy (I) with 2 Crown D75s]

billybob - thanks for the reply / coaching

 

i posed the question for the reason you allude to ...i dont want to damage my gear. 

 

both amps have been serviced. i'll go with a 1 amp solution as you suggest, but i am curious about the complexity you mention.

 

from my read of the crown d75 user manual, running the amps in mono mode is simply a matter of jumping the speaker posts and flipping the mono switch on back.

 

what could go wrong? (just hoping to learn) 

[Bi-amping Heresy (I) with 2 Crown D75s]

hello - first post but Klipsch owner since 1981

 

i recently acquired 2 Crown D75 amps, I am considering running each in bi-amp mono mode and feeding my gen 1 heresys at a small outdoor gathering. 

 

aside from putting each amp in mono mode and correctly wiring the setup - is there something i should be aware of or avoid? i've never done this before and have pro audio experience. Just looking for coaching

 

thanks