My Altec 604e build.

[pete1729]

The ports on these boxes have the same area and depth as the Altec 620 cabinet.

Exactly. 2½" by 11" on the 620 cabinet. 27.5 net square inches. 5¼" inches square, hence two triangles 5¼" on a side.

 

[twiiii]

But is the distance between the port and the basket of the speaker the same changing the traveling distance of the sound. Is the depth of the cabinet the same? Those to parameters might change the tuning a bit. Another thing to think about is what frequencies will be coming out the port. Thats why some manufactures choose a tuned labyrinth instead because the can line the labyrinth with absorbing material to keep mid range and upper bass sounds from being exited through the port causing anomalies in the important fundamental frequencies for a lot of instruments.

 

[pete1729]

Well... shoot. This is as far as I'm getting until spring. We head out of Missoula, Montana for the warm embrace of New Orleans this time every year, and this year was later than most. I just ran out of time.

 

[homebrew]

So how do they sound?

 

[blademan13]

Man, they sure dwarf those 5’s!

 

[pete1729]

So how do they sound?

I did not build crossovers for them yet, nor did I even install the drivers. They sound like disappointment.

 

[toddalin]

 

[homebrew]

Maybe you need to upgrade the crossover caps?

 

[Isotonic]

There's always next Spring. I just finished a bunch of projects that were years old this summer/fall. I am shutting the garage shop (for the most part) till Spring. Got to make room for the cars. Keep them warm and out of the snow. Be sure and subscribe to your post, so you can come back here and let us know how it's going.

 

[toddalin]

There's always next Spring. I just finished a bunch of projects that were years old this summer/fall. I am shutting the garage shop (for the most part) till Spring. Got to make room for the cars. Keep them warm and out of the snow. Be sure and subscribe to your post, so you can come back here and let us know how it's going.

You can borrow some of my garage space if you build me a nice set of cabinets like those. I'm selling the Vette today to a buyer in Tenn.

 

[Isotonic]

You can borrow some of my garage space if you build me a nice set of cabinets like those. I'm selling the Vette today to a buyer in Tenn.

Dang. Beautiful. Looks like an old Hot Wheel from my childhood.

 

[pete1729]

You can borrow some of my garage space if you build me a nice set of cabinets like those. I'm selling the Vette today to a buyer in Tenn.

'67 Big block?

 

[Enophile]

Well... shoot. This is as far as I'm getting until spring. We head out of Missoula, Montana for the warm embrace of New Orleans this time every year, and this year was later than most. I just ran out of time.

View attachment 3631043

Looking forward to Season 2 of "My Altec 604e Build!"

 

[toddalin]

'67 Big block?

Modified '64

At the Wheeler Dealer TV Show video shoot some years back.

 

[toddalin]

Modified '64

At the Wheeler Dealer TV Show video shoot some years back.

I've had the car for the last 42 years and "made it my own" over that time. Screw the stock parts when after market is so much better. Still, that is where the value is for some people. Originally it lived life a quarter mile at a time before I did the restoration. Then it became too nice to really enjoy.

331 CI, pump-friendly 9.5:1 CR
K&N 14"x4" air filter, Corvette drop base and lid
Holley 600 dp, choke horn milled and blended, Primary - 69, Secondary – 74, Squirters - 21
1/2" Aluminum open spacer port matched to manifold, exterior polished
Edelbrock Performer RPM intake manifold, port matched, exterior polished with all extraneous castings and lettering removed
Homemade lifter valley splash shield to keep hot oil off manifold bottom
Manifold heat riser crossover blocked
Camel hump 1.94/1.50 heads hogged out to 2.02/1.60, pocket ported, port matched, pump-friendly hardened seats, 3-angle valve job
All porting and port matching performed by Juan Mendoza of Flow Technology (who also does the LA street racing crowd)
Cylinder bores clearanced to unshroud the valves
Comp Cams 1.52:1 roller-tip rockers
Crane Cam Vintage Muscle 327/350 hp cam, 222 degrees @ 0.05, 0.447" lift (with 1.50 rockers)
Doug Thorley headers, dechromed and ceramic-coated
2.5" mandral-bent exhaust (including tips), 2" cross-over just before rear axle
DynoMax stainless Ultra Flow mufflers
Millerspeed 1-1/2” Gilmer under drive belt drive system
Mallory Hyfire IV CD ignition box triggered off Accel points
Mallory high voltage chrome coil
Mallory spiral-wound coil wire
Mallory solid copper plug wires, ends soldered to wires
Champion plugs
37 degrees total ignition advance
Carter high volume fuel pump
Melling high volume oil pump
Open breathers
Polished aluminum high flow water pump
160-degree thermostat
Flex fan with polished aluminum spacer
Polished aluminum one-wire 100 amp alternator
Header Power Bracket
Keisler TKO600 5-Speed (0.64:1 Overdrive)
Hurst shifter
3.70:1 positraction with Big Block yokes
Dick Guldstrand Grand Touring Suspension, one coil removed on front springs, 2” longer spring bolts in rear/Dick Guldstrand Rear End Locating Kit
Tokico Performance Shocks
Adjustable front sway bar
Vette Brakes and Products Control Arms
225/60/15 Firestone Firehawk SZ50s on 7”-wide Western 30-spoke Turbine Wheels

 

[toddalin]

As it turns out, the world is smaller than one would imagine. The buyer is on the Audiogon Forum, that I also frequent and owns both avartistry (www.avartistry.com) and master artist audio (masterartistaudio.com).

 

[Drugolf]

Looks like you built 3 cabinets there. (far right of photo)

As far as the regular plywood goes, you can always veneer it to doll them up. A few nice wood varieties are still fairly affordable if you shop around.

 

[pete1729]

Looks like you built 3 cabinets there. (far right of photo)

As far as the regular plywood goes, you can always veneer it to doll them up. A few nice wood varieties are still fairly affordable if you shop around.

The third one is actually a Wharfdale clone, I call it the 'Linton MkII'

The fronts are good, they'll get a garnet shellac or maybe one of those monocoat finishes from Rubio. I'm going to paint the sides and back a warm gray.

 

[pete1729]

I've had the car for the last 42 years and "made it my own" over that time. Screw the stock parts when after market is so much better. Still, that is where the value is for some people. Originally it lived life a quarter mile at a time before I did the restoration. Then it became too nice to really enjoy.

331 CI, pump-friendly 9.5:1 CR
K&N 14"x4" air filter, Corvette drop base and lid
Holley 600 dp, choke horn milled and blended, Primary - 69, Secondary – 74, Squirters - 21
1/2" Aluminum open spacer port matched to manifold, exterior polished
Edelbrock Performer RPM intake manifold, port matched, exterior polished with all extraneous castings and lettering removed
Homemade lifter valley splash shield to keep hot oil off manifold bottom
Manifold heat riser crossover blocked
Camel hump 1.94/1.50 heads hogged out to 2.02/1.60, pocket ported, port matched, pump-friendly hardened seats, 3-angle valve job
All porting and port matching performed by Juan Mendoza of Flow Technology (who also does the LA street racing crowd)
Cylinder bores clearanced to unshroud the valves
Comp Cams 1.52:1 roller-tip rockers
Crane Cam Vintage Muscle 327/350 hp cam, 222 degrees @ 0.05, 0.447" lift (with 1.50 rockers)
Doug Thorley headers, dechromed and ceramic-coated
2.5" mandral-bent exhaust (including tips), 2" cross-over just before rear axle
DynoMax stainless Ultra Flow mufflers
Millerspeed 1-1/2” Gilmer under drive belt drive system
Mallory Hyfire IV CD ignition box triggered off Accel points
Mallory high voltage chrome coil
Mallory spiral-wound coil wire
Mallory solid copper plug wires, ends soldered to wires
Champion plugs
37 degrees total ignition advance
Carter high volume fuel pump
Melling high volume oil pump
Open breathers
Polished aluminum high flow water pump
160-degree thermostat
Flex fan with polished aluminum spacer
Polished aluminum one-wire 100 amp alternator
Header Power Bracket
Keisler TKO600 5-Speed (0.64:1 Overdrive)
Hurst shifter
3.70:1 positraction with Big Block yokes
Dick Guldstrand Grand Touring Suspension, one coil removed on front springs, 2” longer spring bolts in rear/Dick Guldstrand Rear End Locating Kit
Tokico Performance Shocks
Adjustable front sway bar
Vette Brakes and Products Control Arms
225/60/15 Firestone Firehawk SZ50s on 7”-wide Western 30-spoke Turbine Wheels

That took me a minute to digest. I had to look up 'valve shrouding'. I had an idea.

That sounds like an entirely streetable 12 second car to me. Built to breathe, built to spin. Do think it's putting out 500 hp?

 

[pete1729]

Looking forward to Season 2 of "My Altec 604e Build!"

There might be a mid season spin off, " My Altec 604d Build".

I have a single 604d here. It's lived It's whole life in 5.5 cu ft cabinet. It's high time I built a proper box. Either a 620 or a Hiraga Onken.