CRS+ (2 board vs 1 board) questions.

plastic_avatar
plastic_avatar Posts: 730
in Vintage Speakers
Questions

- For anyone who had a 2-board crossover and upgraded to the last gen, what did you notice as the most palpable changes to the sound/presentation?

- Did anyone who went to the last gen crossover regret it?

- There’s no way to Dread a non-last-gen crossover, correct? If you want to do mono blocks (or just get that Dread improvement), you must go gen 4, right?

- There’s a size difference between the 2-board CRS+ and the 1-board, true?

- Has anyone built a last-gen CRS+ cab from scratch?

- Did anyone ever felt the entire face of a CRS?

Background

I got a pair of junkyard CRS+ to have my way with.

They were in rough shape; a fitting companion pair to my 1C ;)

I’ve sat with them for a month now. I’m impressed. They don’t have the force of the 1C, but wow. What an amazing little speaker.

Going through old posts to learn a little more about them, I came across a few things where people talked about the comparisons between SDA models, but not much on the last 2 CRS+ revisions.
The Thrifty Setups in Mah House Big thrifty stereo in the basement w/ my custom SDA-1C (built with help from kind forum members) * Beautiful 1966 MCM GE console upgraded w/ Bluetooth, Dual turntable, and Paradigm speakers in family room * Swanky 1980 Realistic system and great TEAC eq with dancing colored lights in the living room * custom 5B on a system for my Dad * Ye Olde college stereo in the garage
· Share on FacebookShare on Twitter

Comments

  • pitdogg2
    pitdogg2 Posts: 26,941
    The big difference between them is the 2 board blade/Blade crossovers both blades carry signal. The 1 board pin/blade crossovers, only the pins carry signal, the blades connect to the ground inside the cabinet to the negative binding posts. Therefore you have the ability to use monobloc's or non-common ground amps only then does the blade come into play, with the use of the AI-1 cable or a dreadnought to tie the grounds together.
    · Share on FacebookShare on Twitter
  • plastic_avatar
    plastic_avatar Posts: 730
    pitdogg2 wrote: »
    The 1 board pin/blade crossovers, only the pins carry signal, the blades connect to the ground inside the cabinet to the negative binding posts.

    Ohhhhhhhh. O.k.

    I think I'd misunderstood the pin/blade vs blade/blade setup. I'll stare at schematics again later. Much appreciated!

    [thinks]

    I'm still floored with how wide an image these things throw.

    [listening now]

    I wonder how the difference in crossover design affects that.

    I believe I'd read a DK post where he preferred his TL'd last gen to other versions, but I don't recall seeing anyone tear apart the listening experience between the 2 crossovers.

    The Thrifty Setups in Mah House Big thrifty stereo in the basement w/ my custom SDA-1C (built with help from kind forum members) * Beautiful 1966 MCM GE console upgraded w/ Bluetooth, Dual turntable, and Paradigm speakers in family room * Swanky 1980 Realistic system and great TEAC eq with dancing colored lights in the living room * custom 5B on a system for my Dad * Ye Olde college stereo in the garage
    · Share on FacebookShare on Twitter
  • Toolfan66
    Toolfan66 Posts: 17,988
    edited 5:00PM
    Mine were originally CRS Dual Board, I upgraded them to single board CRS+ Fully Hot Rodded.

    I owned a set of fully hot rodded 1C’s as well many moons ago, I like the 1C’s but would never part with my CRS+’s for them..

    IMO The Monitor 7’s, CRS+’s, and the 2B’s (single board as well) are the three special Polk Speakers that will just about slay any room with the right upgrades and gear. It doesn’t have to be super high end gear, just good power.

    Let the magic happen.. 😎

    Don’t forget the Dreadnought..🤓
    · Share on FacebookShare on Twitter
  • pitdogg2
    pitdogg2 Posts: 26,941
    I think the distance between the drivers on the CRS and SDA SRS 2 help create that huge soundstage. It's intoxicating 😉
    · Share on FacebookShare on Twitter