My Yorkville Bloc 150B is a 4ohm 150w bass combo with a 15" subwoofer. Is this speaker overkill or can the amps handle it?

Hi Willydon, There is so much I could say, but I can't here. I like Yorkville/Traynor amps (having lived in Canada). While I think it would work, I think you could get a more suitable speaker for less that is 4 ohm. Have a look at the Eminence Legend CA154. I think you'll be happier with it both in cost and in performance. The Kappa Pro is really designed more as a PA speaker, The Legend is designed as a bass cab speaker. Good luck! my next choice would be a Celestion Pulse 15, although it is also usually an 8 ohm. 8 Ohm speaker won't hurt your amp, but it just may not be as loud. Personally, I have an old EV 15 in a similar cab for one of my "vintage" rigs that someone gave me.

I have some 18 Sound 15's but want to know if these play mid-bass better than the 18 sounds?

Yes they do play deeper than the 18 sounds.18 sound are much louder because they are higher in frequency and sensitivity

The little metals clips that are on each terminal, those are supposed to be removed, yes?

Method 1: remove clip and crimp wire to it then replace back on speaker. Method 2: remove clip, discard, solder wire straight to post. Method 3: remove clip, crimp wire to clip and place back on post, solder clip - wire - post all together.

I bought 4 kappa pro 12 & 4 eminence asd1001b 1" hf horn driver what two way board crossover should i use

Eminence pxb-2800 two way board, Or the PRV 2df 1800

Eminence Professional Series Kappa Pro 15a 15 Pro Audio Speaker

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Description

🎶 Elevate your sound game — because your audience deserves nothing less!

BUILT TO LAST - Ferrite magnet with vented core and premium materials guarantee reliability on stage and in studio.
WIDE FREQUENCY RANGE - Crisp response from 46 Hz to 4 kHz ensures deep lows and articulate mids for every mix.
PRECISION ENGINEERING - Features a 15" die-cast aluminum basket and Kapton coil former for durability and thermal protection.
PRO GRADE VERSATILITY - Tailored for professional audio setups, vented mid-bass enclosures, and bass guitar rigs.
POWERHOUSE PERFORMANCE - Delivers a robust 500 watts at 8 ohms for crystal-clear, room-filling sound.

The Eminence Kappa Pro 15A is a 15-inch professional-grade audio speaker delivering 500 watts at 8 ohms. Engineered for vented mid-bass enclosures and bass guitar applications, it features a die-cast aluminum basket, Kapton coil former, and ferrite magnet with vented core for enhanced power handling and durability. With a frequency response spanning 46 Hz to 4 kHz and 101 dB sensitivity, it offers powerful, clear sound ideal for pro audio, stage monitors, and club systems.

Specifications

ASIN	B0009H00UO
Additional Features	Performance optimized for lead guitar. Also suitable for bass guitar, vocal P.A., keyboards, club music systems and stage monitors. Materials of Construction: Kapton coil former for increased rigidity and thermal protection Polyamide-imide coated two-layer, 29ga., copper voice coil for improved power handling and durability. Ferrite Magnet Vented core for increased power handling Premium pressed s…
Antenna Location	For Music Players
Audio Driver Size	15 inches
Audio Driver Type	Dynamic Driver
Audio Output Mode	Stereo
Best Sellers Rank	#48,449 in Musical Instruments ( See Top 100 in Musical Instruments ) #239 in Monitor, Speaker & Subwoofer Parts
Brand	Eminence
Built-In Media	Not Included
Color	Black
Compatible Devices	Home Theater
Compatible with Vehicle Type	Car
Connectivity Protocol	Coaxial
Connectivity Technology	Coaxial
Control Method	Touch
Controller Type	Amazon Alexa
Customer Package Type	Standard Packaging
Customer Reviews	4.9 4.9 out of 5 stars (43)
Enclosure Material	Paper, Cloth, Kapton, Polyamide-imide, Copper, Ferrite, Steel
Frequency Response	4 KHz
Global Trade Identification Number	00876358000371
Impedance	8 ohm
Is Waterproof	False
Item Dimensions D x W x H	6.6"D x 15.32"W x 14.56"H
Item Type Name	Eminence Professional Series Kappa Pro-15A 15" Pro Audio Speaker, 500 Watts at 8 Ohms
Item Weight	18.3 pounds
Manufacturer	EMINENCE
Model Name	KAPPAPRO15A
Model Number	KAPPAPRO15A
Mounting Type	Flush Mount
Number of Audio Channels	2
Number of Items	1
Number of Power Levels	1
Power Source	Corded Electric
Speaker Maximum Output Power	500 watts
Speaker Size	15 inches
Speaker Type	Subwoofer
Specific Uses For Product	Pro audio in vented mid-bass or bass enclosures, bass guitar applications
Subwoofer Connectivity Technology	Wired
Subwoofer Diameter	15 inches
UPC	876358000371
Unit Count	1 Count
Warranty Description	1 year warranty.
Warranty Type	Limited
Wireless Technology	No Wireless Communication Technology
Woofer Diameter	15 inches

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