Speaker - Eminence® Signature, 12", GA-SC64, 40W, 8Ω

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Speaker - Eminence® Signature, 12", GA-SC64, 40W, 8Ω

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Signature Guitar 12" speakers. Vintage American ceramic magnet tone approved by legendary amp builder, George Alessandro. Well-balanced from top to bottom with tight, full lows, warm mids, and warm, but open highs

Item ID:
Eminence Part Number:
Magnet Type:
RoHS Compliant
Product Measurements by Type
Baffle Hole Diameter11.13 in.
Basket MaterialPressed Sheet Steel
Coil Constructioncopper voice coil
Coil FormerPaper former
Coil Inductance (le)0.67 mH
Cone CompositionPaper cone
Cone Edge CompositionPaper cone edge
Core DetailsNon-vented core
D.C. Resistance (Re) 7.63 Ω
Depth5.13 in.
Diameter12 in.
Driver Volume Displaced2 liters
Dust Cap CompositionSolid composition felt dust cap
Efficiency Bandwidth Product (ebp)146
Electrical Q Factor (Qes)0.6
Equivalent Acoustic Volume (VAS)44.96 liters
Force Factor (BxL)13.8 Wb/m
Front Sealing GasketYes
Gap Height8 mm
Linear Displacement, maximum (XMAX)1.23 mm
Magnet CompositionFerrite
Magnet Weight38 oz.
Mechanical Compliance (CMS)0.12 mm/N
Mechanical Moving Mass (MMS)27 g
Mechanical Q Factor (QMS)16.82
Mounting Hole Bolt Circle Diameter298.5 mm
Mounting Hole Diameter6.1 mm
Nominal Basket Diameter12 in.
Nominal Impedance8 Ω
Overall Diameter309.1 mm
Peak Diaphragm Displacement Volume (vd)83.8 cm3
Power Rating40 W
Recommended Enclosure Volume, sealedAcceptable
Recommended Enclosure Volume, ventedAcceptable
Resonance88 Hz
Resonance Frequency (ƒS)88 Hz
Sensitivity100.5 dB
Surface Area Of Cone (sd)519.5 cm2
Total Q Factor (QTS)0.58
Usable Frequency Range80 Hz - 5.3 kHz
Voice Coil Diameter1.75 in.
Packaging Information
Packaging Dimensions13.75 in. × 13.75 in. × 6.125 in.
Weight (Packaging)8.4 lbs.

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Specifications, Files, and Documents

Sound Samples:

PDF: Specification Sheet Specification Sheet1.61 MB

Questions and Answers

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Asked by Anonymous on July 26th, 2017.
Matt H
July 27th, 2017
It should fit but it is always best to take some measurements. This speaker has a 12" diameter and a depth of 5.13”.

Product Reviews

5.00 out of 5 based on 2 reviews
DW - August 13th, 2021
5 out of 5

I bought this for an extension cab to use with my Milkman Amp. Couldn;t be happier with this speaker, has all the vintage Fender tones I was hoping for. The 40 watt rating was exactly what I needed. This speaker is destined to be THE replacement speaker for any vintage or reissue in need of accurate vintage tone!! The folks at AP treated me well, great price and quick shipping, much appreciated!!

Gregory P.K. Ah Yat - October 11th, 2017
5 out of 5

The BEST choice ever. It transformed my 1970 Fender Deluxe Reverb amp into the BEST sounding single 12" speaker amp that I've owned. Nothing can even come close to the magic that George Allessandro has put into this speaker His description of this speaker is spot on. I've played Vox amps with Celestions and Fenders with Jensens, but NONE of them sound as GREAT as the GA-SC64. If you love your amp, but might not liking the sound of it anymore, change your speaker to this and you'll fall right back in love with it again. Don't buy a reissue when you have a vintage. Don't get it reconed when you can get BETTER/BEST.