STONES SOUND STUDIO

                                                                                        RIBBON SPEAKER KIT

                                        275  Floor standing  Twin 5'' MTM  Speaker

                                                                SPECIFICATIONS                       Issue3            17/12/07      Exclusive to Stones

Frequency Range  
(on axis)

40Hz-40kHz                         Floor standing

Efficiency

92.5dB SPL    @ 1m 2.83Vrms                     @22degs C  averaged

Nominal Impedance

4 ohms

Recommended amplifier power
Home Theatre Receiver
Stereo   and  Valve


5 to 120 W                       Unclipped program material
5 to 120 W                       Unclipped program material                        

Harmonic Distortion  THD

+- 0.3%                          @ 1watt 2.83Vrms          1Khz

Relative Phase Coherence

<30  degs   400Hz  to 10Khz

Crossover

 

 

(No Soldering required )

 

   

Printed Circuit Board : Fully finished includes all components, Velcro mounting tabs & wiring

Wiring cable : Internal speaker cable high quality OFC 384 strand with push on connections

Speaker terminals : 4mm twin gold plated binding post

Filter : 2 way  off set  Bessel / Butterworth ,  linear phase

Freq : 3.76Khz
Order : 2nd Lp, 3rd Hp

Components: High quality, Copper Air core inductors ,SCR 400V metalized MKP capacitors

Non Inductive resistors

Bi-wiring : Option provided

Drivers
Bass
Tweeter

   


2x Peerless 
832873           Woofer   5"  Nomex
1x Fountek  Jp3.0                Ribbon   3"   ( 65mm)

Input Terminals

   

Gold plated 2way

Cabinet

   

High quality  enclosure supplied fully finished with, pre drilled screw holes,  port, speaker mounting holes, grill panel , acoustic felt lined ,mounting screws

Features : Low resonant chamber ,36mm thick front baffle , hardwood bracing ribs ,rounded edge speaker hole, rear port , low loss acoustic grill material, felt  cup for tweeter magnet , acoustic port plug for wall or in cabinet mounting

Cabinet Finishes

  270 DIY  your own enclosure from Stones Plans USe 260speaker kit

 

Size ( outside dimensions )
Height
Width
Depth

 
1050mm
180
305
36mm Thick front baffle

 

Use 260 cabinet  >  internal  Volume ,bracing   and port tuning for upper chamber , sand fill lower chamber and fit base plinth
Use 260 Felt damping technique for tweeter and cabinet
Use Speaker kit  260 >  ( Crossover unit  & drivers  )

Mass

25 kg ea