nb Albert

eee/XP

from: http://wiki.eeeuser.com/windowsxp

Monacor

TECHNICAL DATA:
Impedance (Z) 4Ω
Frequency range 48-4,000Hz
Resonant frequency (fs) 37Hz
Crossover frequency (12dB/oct.) (fmax) 2,500Hz
Peak rating 200W
Power rating 75WRMS
SPL (1W/1m) 91dB
Cms suspension compliance 0.95mm/N
Mms moving mass 19g
Qms mech. Q factor 3.64
Qes electrical Q factor 0.58
Qts total Q factor 0.5
Compl. equiv. vol. (Vas) 61 l
DC resistance (Re) 3.8Ω
Voice coil ind. (1kHz) (Le) 0.3mH
Voice coil diameter 25mm
Voice coil former aluminium
Air gap height 4mm
Force factor WxL 5.51Tm
Eff. cone area (Sd) 214cm2
Magnet diameter 100mm
Magnet weight 570g
Mounting cutout Ø 182mm
Mounting depth 90mm
Dimensions Ø 202mm
Weight 1.25kg

http://monacor.co.uk/products/carfi-loudspeaker/vnr/102800/




TECHNICAL DATA:
Impedance (Z) 4Ω
Frequency range 40-3,500Hz
Resonant frequency (fs) 35Hz
Crossover frequency (12dB/oct.) (fmax) 2,000Hz
Peak rating 350W
Power rating 100WRMS
SPL (1W/1m) 93dB
Cms suspension compliance 0.55mm/N
Mms moving mass 38g
Qms mech. Q factor 3.15
Qes electrical Q factor 0.47
Qts total Q factor 0.41
Compl. equiv. vol. (Vas) 96 l
DC resistance (Re) 3.7Ω
Voice coil ind. (1kHz) (Le) 0.4mH
Voice coil diameter 39mm
Voice coil former aluminium
Air gap height 5mm
Force factor WxL 8.08Tm
Eff. cone area (Sd) 353cm2
Magnet diameter 125mm
Magnet weight 850g
Mounting cutout Ø 231mm
Mounting depth 110mm
Dimensions Ø 255mm
Weight 2.1kg

http://monacor.co.uk/products/carfi-loudspeaker/vnr/102810/

ebay car amp

400W 4-Channel output power Amplifier;
U disk SD/MMC card can be played for music and FM stereo radio and this item Supports MP3 music format; (USB+SD+MMC+FM)
Four Channel, integrated circuits, minimal distortion and strong power;
2 main channels and 2 surround channel output
Filtering and anti-capacity power circuit;
DSP sound field pattern of the four;

specification:
Frequency response: 20Hz- 20KHz
Output power: RMS 41W 1KHz
PMPO power: 400w.
Harmonic distortion:≤ 0.05% 4W 1KHz
SNR:=85dB
High control: 12dB±10KHz
Bass control: 12dB±100Hz
Signal level: 220MV 47K
Reader, u-disk format: MP3, FM
FM frequency range: 87.5MHz-108MHz
Load impedance:4-16 ohms
Dimension: 190*170*60 mm
(A remote for ampplifier is included.)
(12V DC power adaptor is not included in the package.)

Risa Uke

Size 18.3“ x 4.3“ x 1.2” (46.5 cm x 11 cm x 3 cm)
Scale length 14.2” (363.5 mm)
Tuning G-C-E-A or A-D-F#-B
Strings RISA Fluoro-Carbon
Finish Satin clear coat
Frets 14
Neck Maple, width 1.38“ (35 mm) at zero fret
Solid maple body
Fingerboard One-piece (neck, body, fingerboard)
Pickup Passive Shadow Piezo
Tuners 1:4, Banjo style
Weight 14 ounces 380 g

OTHER:

MANDOLINS
scale length: 13 7/8"
width of nut: 1 5/32"
width at 12th: 1 15/32"
strings, outside to outside, at bridge: 1 19/32"
highest fret: 21
depth of neck at 1st fret: 13/16"
depth of neck at 8th fret: 15/16"
length of peghead: 7 1/2"
depth of sides only: 1 9/16"
width of lower bout: 10 1/32"
length of body: almost 14" with scroll
max height of arch, top: usually 3/8"+*
height of bridge: 13/16"
max height of arch, back: usually 1/2"+
soundhole dimensions: 4 9/16" long
hypothetical bridge point to tail: 6 3/8"

from http://smart-instruments.com/gal95.html

constant current source

http://talkingelectronics.com/projects/200TrCcts/200TrCcts.html

TDA7052 w DC vol control

http://freecircuitdiagram.com/2010/10/09/btl-mono-amplifier-with-dc-volume-control/



This is BTL (bridged tied load) mono amplifier with DC volume Control circuit. This circuit uses TDA7052A/AT that is suitable not only for monitors and TV but also battery fed portable radios and recorders. The difference between conventional DC volume circuits and TDA7052A/AT the DC volume control is there is no coupling capacitor is needed in TDA7052A/AT the DC volume control to maintain the low offset voltage. Besides that, the TDA7052A/AT the DC volume control require low supply. The advantages of BTL principle are it has the ripple’s frequency on the supply voltage is twice the signal frequency and the supply current peak is lower.