Welcome to our online store!

My Cart:

You have no items in your shopping cart.


Altec Big Red Mains w/ Mastering Lab Crossovers Sound Factory Studio 604e #30612

Availability: In stock




BRAND: Altec

MODEL: Big Red Mains

FUNCTION: studio speaker

PRODUCT DESCRIPTION: This listing is for a pair of Altec Big Red Mains. These came out of the world famous Sound Factory studio A in Hollywood CA. The crossovers are custom made, hand-built by engineers from The Mastering Lab. 


  • 2 - large wood cabinet 
  • 2 - 15" Altec 604E Super Duplex speakers
  • 2 - 15" Utah “Red Surround” speakers
  • 2 - Custom Mastering Lab Crossovers that were made & tuned by engineers from Doug Sax's Mastering Lab.

ACCESSORIES INCLUDED: This item comes as seen in photos, and does not include any accessories.


  • Cabinets: Very Good- Both have a few light scuffs and scratches on all sides and have 3-1" holes drilled though on the top. All the screw holes for mounting the speakers are in great shape.
  • 604E speaker: Excellent- Both have a few signs of normal use around the basket and cylinder, including minor blemishes and surface scuffs. There are a few scrapes on the interior of the horn. Otherwise, it's in very good condition! The cone, surround, spider and gasket are in great shape!
  • Utah speaker: Excellent- Both have signs of normal use around the cylinder, including a few blemishes, oxidation spots and tape residue marks. The horn has several surface scrapes on the interior. Otherwise, it's in very good condition! The cone, surround, spider and gasket are in great shape!
  • crossover: Very Good- Both units have a few scratches and scuffs on all sides. One of the boxes is missing the bottom. All the banana plug and binding post terminal strips are in great shape, overall, it's in very good condition.

WORKING CONDITION: Excellent- All components are in stellar operational shape, and sound great! This components in the boxes are currently not wired up and each component was tested individually. For the future owner we will have the speakers wired by the tech at Sunset Sound to your liking. 



SHIPPING: This item is too large, too heavy, or too delicate to ship by standard shipping services and should be shipped by FREIGHT. Please message us with your postal code and we'll get back to you with the best pricing and delivery options that we can find. If there is a price listed above for shipping, it is an estimate only and the actual shipping costs may be more or less, depending on service options and your location.

The Techno Empire Guarantee

We at Techno Empire love gear as much as you do and want you to be very happy with your purchase. We offer a 100% SATISFACTION GUARANTEE as part of our commitment to making sure you keep coming back for more incredible and inspiring gear. Buy with confidence with our stellar customer service, innovative trade-in programs and purchase incentives, along with an enterprise-grade secure website and ultra-safe checkout process.