What technical requirements do alternative speakers for my newly purchased stereo unit have to fulfill?

Bi-amping indicated that you have two amps, one for the tweeters, adn another for the woofer, in a two way system. If you don't have two seperate amps, you can use the speaker A & B outputs to run seperate speaker llines to each set of speaker inputs, but that will not be true bi-amping. Another alternative is to use jumpers to connect the speaker inputs together, this not needing seperate amps. Here's a link to the owner's manual:
http://www.manualslib.com/manual/359882/Klipsch-Reference-Series-Rb-41-Ii.html#product-Reference%20Series%20RB-81%20II

2007 Toyota Sienna Car Audio Wiring Color Codes
Car Radio Battery Constant 12v+ Wire: Blue/Yellow
Car Radio Accessory Switched 12v+ Wire: Gray
Car Radio Ground Wire: Brown
Car Radio Illumination Wire: Green
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: Black/Red
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Pink
Left Front Speaker Negative Wire (-): Violet
Right Front Speaker Positive Wire (+): Green
Right Front Speaker Negative Wire (-): Blue
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Black
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Red
Right Rear Speaker Negative Wire (-): White

Technically, yes, but the same audio would be traveling across the two pairs of wires that would be arriving via a single pair to the jumpered speakers. NO electrical difference.

Read up on bi-amping and by-wiring (BUY-wiring) before pursuing that path. The underlying presumption of an improvement from either is that there are deficiencies in your system to begin with. It's all snake oil designed to sell cables and amps.

Absolutely remove them for bi-amp or bi-wiring.

PHASE 1

GETTING FAMILIAR WITH VEHICLE SPEAKERS

The car speakers are located within the vehicle. An observation of the passenger side doors should make accessibility to speakers. The remainng speakers would be locatable at the rear area of a sedan car closest to the wind shield area. The category of the vehicle may determine the positioning of speakers within interior either different with sedans, SUVs or single cabin trucks. However, tuning on the vehicle stereo should ascertain the location areas of sound speakers within the vehicle. The speakers may total four for most dual cabin vehicles, or two speakers for single cabin pickup trucks. Unless the vehicle original speakers were malfunctioning alternate procedures are least required. For example, a damaged speaker may require changing for an alternate acquirable at retail. However, speakers are sold in pairs to achieve coordination of sound requiring for the technician to request for purchase parts in pairs.

PHASE 2

GETTING FAMILIAR WITH SPEAKER TECHNICAL REQUIREMENTS

The stereo speakers have an entrapment space at each area within the vehicle next to passenger's doors. Acquiring accessibility to the speaker coil requires unfastening the plastic covers or interior insulation. Once unfastening cover, the speaker is exposed requiring unfastening also to dismantle from docking station within the door lodging. The speaker comes loose making possible observation for repairs or replacement parts. The area a vehicle speaker is situated may require an alternate arrangement to achieve accessibility. For example, a sedan car rear speaker is accessible at the luggage truck. Single cabin trucks may have stereo speakers at dashboard corners next to the windshield and air space window spaces at doors. An observation of the speaker area within the vehicle should acquire the tools, and compartments that have to be unfastened before speaker come loose.

PHASE 3

ACQUIRING PARTS FOR STEREO REPAIRS

Damage in the stereo setup may require replacement parts. Ascertain the damage from the vehicle prior to acquiring parts. For example, a malfunctioning stereo is physically observed as damaged or least capable of achieving operationally. The stereo speaker's least producing audio sound with proper functioning of the stereo is indication of damage. Once the vehicle damages are ascertained, several additional parts compliment the restoration process. Acquiring a new stereo player would require harnesses, wiring kits, and fasteners also acquirable. A damaged speaker requires dual speakers as replacement to attain sound distribution within vehicle and also as compatibility requirements. Once vehicle parts are acquired for restoration functionalities, tools capable of complimenting the process is required also.

PHASE 4

GATHERING TOOLS

The restoration of damages on the vehicle requires tools to achieve success. However tools have various purposes requiring keen observation of the type of components involved to assemble a tool kit to the task. Observing the broken components would provide details of kinds usually as fastening, unfastening or mending, gripping proposes. Car stereo repairs involve electrical circuits requiring tool separate than the mechanical tools for loosening screws or compartments.

PHASE 5

PERFORMING THE REPLACEMENT

The vehicle requires workshop environments to achieve successful technical restorations. Unless any technical malfunctions were observed complementary to the stereo system speaker repairs, the procedures involve removing and replacing component parts to attain regular functionality. Usually, the process of restoring damaged components requires caution to attain success without compromising the integrity of delicate components.

You need to run RCA cables from the CD player to the CD or AUX input on your amp / receiver unit. If you have a standalone amp, you need some way to control the volume. Basically, if you have a volume control on the front of your amp, you're OK. If not, you should also have a preamplifier that the CD player feeds first.

From the amplifier, then, a single pair of speaker outputs feeds a single pair of inputs on your speakers. The reason for two jack sets on the speakers is for "bi-wiring" or "bi-amping", not necessary for basic stereo reproduction.

So -

CD red/white RCA out -> preamp/receiver red/white CD/AUX input. Amp speaker output (red + / black -) to one red/black input pair on the speakers. An input on the speaker is side by side...

Keep the red to red, black to black when connecting the speakers, or you will wind up with poor sound and weak bass.

With the CLS-215 speakers, you can Bi-Amp or Bi-Wire them.

Here is how to Bi-Wire and Bi-Amp Speakers:
http://www.oregondv.com/Audio_FAQ_Bi-Wire_Bi-amp%20.htm




I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

you are actually not bi-amping the unit, you are bridging the amp. this really only works as long as all channels produce equal power. next the bad news is that typically home stereo amps are not wired internally to bridge channels.

bi-amping a speaker refers to connecting on channel to the highs and on channel to the lows. the receiver would need to be be able to process the outputs via a crossover network to split the frequency range in half so the appropriate frequencies went to the correct speaker.

You can purchase a small package of crimp connectors for the electrical connections. If the wires are exposed, you can connect them using this following list of connections.
These are the CAR's wiring (not the radio unit)
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger Wire: Pink
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 4′ x 6′
Car Audio Front Speakers Location: Dash
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: 6′ x 9′
Car Audio Rear Speakers Location: Rear Deck
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue
Look on the owner's instructions for the radio, the wiring diagram should be there. If not you can visit the clarion website with the radio model number to get the color codes for the radio wiring..
Simply crimp each to the correct corresponding wire. You may have a few extra.. the antenna power, or the radio mute.. just cap the ends of these..
K

bi-wiring requires the removal of the copper jumpers between the hi and low speaker terminals. you can use two wire pairs twisted together at amp out connections and the four separate ends at each speaker, but the quality of sound will not be as good as buying quality bi-wire cables. But a pair of quality single set of wires at each speaker would be fine, but put jumpers back on and attach to the top terminals, they are designed that way. bi-wiring does allow the crossover to put out a little better sound. Hooking up four sets of wires to the a and b speaker terminals sounds bad. i have had alot of trouble with my rti10's and learned the hard way that it is best to pay more for wires with quality terminations.