On a vintage SVT mission

[timv]

Had my first opportunity to wind it up today and it is everything I had hoped for. Still experimenting but the normal input, channel 1, boost switches off, volume and treble at noon, mid toggle at 800 Hz, dial about 1:00, bass rolled off to about 10:00, is what bass should sound like to me. I'm playing a Mexican J bass, really love the bridge pickup with treble rolled off.

Volume at noon??? I hope you do not have neighbors or are using a very inefficient cabinet.... I never had mine past 9-10 in loud screamy punk bands against 100 watt tube guitar stacks.....

 

[Frome]

Volume at noon??? I hope you do not have neighbors or are using a very inefficient cabinet.... I never had mine past 9-10 in loud screamy punk bands against 100 watt tube guitar stacks.....

My neighbors are pretty cool about it. I work from home 2 days per week when they are usually at work. This is not my typical volume, just wanted to hear what it can do opened up. I'm using it with a GK CX410 until I can get a used fridge cab.

 

[/\/\3phist0]

My neighbors are pretty cool about it. I work from home 2 days per week when they are usually at work. This is not my typical volume, just wanted to hear what it can do opened up. I'm using it with a GK CX410 until I can get a used fridge cab.

I hope that is a 4 ohm version of that cab.
And SVT pushing an 8 ohm load is no bueno.

 

[/\/\3phist0]

My neighbors are pretty cool about it. I work from home 2 days per week when they are usually at work. This is not my typical volume, just wanted to hear what it can do opened up. I'm using it with a GK CX410 until I can get a used fridge cab.

Cheap, heavy 4 ohm 300 watt BXT 115hl4
SVT friendly, goes deeper than an 810.

 

[Frome]

I hope that is a 4 ohm version of that cab.
And SVT pushing an 8 ohm load is no bueno.

It is 4 ohm and it sounds great but really want the fridge to get the full experience.

 

[Frome]

Cheap, heavy 4 ohm 300 watt BXT 115hl4
SVT friendly, goes deeper than an 810.
View attachment 7233534View attachment 7233536

Thanks for sharing, I'll check it out. Being that this thing will never move, I have no concerns with the 8x10 thing. Can you elaborate on going deeper? Obviously one 15" speaker can go deeper than one 10" but 8 of the latter and the bigger sound it creates is really what I want to experience.

 

[/\/\3phist0]

Thanks for sharing, I'll check it out. Being that this thing will never move, I have no concerns with the 8x10 thing. Can you elaborate on going deeper? Obviously one 15" speaker can go deeper than one 10" but 8 of the latter and the bigger sound it creates is really what I want to experience.

810 heritage specs:

close enough for comparison

Frequency Response (-3 dB):
58 Hz - 5 Khz

Maximum SPL:
130 dB
Sensitivity:
100 dB

Usable Low Frequency (-10dB):
40 Hz


BXT-115HL4

Frequency Response (-3dB): 43-18kHz

Maximum SPL: 125dB

Nominal Impedance: 4 ohms

Program Handling: 800

RMS Handling: 400

Sensitivity: 99dB

Usable Low Frequency (-10dB): 37 Hz

 

[Frome]

810 heritage specs:

close enough for comparison

Frequency Response (-3 dB):
58 Hz - 5 Khz

Maximum SPL:
130 dB
Sensitivity:
100 dB

Usable Low Frequency (-10dB):
40 Hz


BXT-115HL4

Frequency Response (-3dB): 43-18kHz

Maximum SPL: 125dB

Nominal Impedance: 4 ohms

Program Handling: 800

RMS Handling: 400

Sensitivity: 99dB

Usable Low Frequency (-10dB): 37 Hz

Thanks for sharing, looks like

810 heritage specs:

close enough for comparison

Frequency Response (-3 dB):
58 Hz - 5 Khz

Maximum SPL:
130 dB
Sensitivity:
100 dB

Usable Low Frequency (-10dB):
40 Hz


BXT-115HL4

Frequency Response (-3dB): 43-18kHz

Maximum SPL: 125dB

Nominal Impedance: 4 ohms

Program Handling: 800

RMS Handling: 400

Sensitivity: 99dB

Usable Low Frequency (-10dB): 37 Hz

Thanks for sharing, looks good on paper but still gotta have that 8x10 wall of sound the way it was intended!

 

[/\/\3phist0]

Thanks for sharing, looks like

Thanks for sharing, looks good on paper but still gotta have that 8x10 wall of sound the way it was intended!

Options to consider

 

[coreyfyfe]

My mini cab solution was a barefaced two10. I mostly use the SVT with a 212 or pair of 112s now though, when it does come out. I have a beat up old 810, mostly because it was free. It hasn't left my garage since I brought it home.

 

[Frome]

Options to consider

Good to have!

 

[Frome]

My mini cab solution was a barefaced two10. I mostly use the SVT with a 212 or pair of 112s now though, when it does come out. I have a beat up old 810, mostly because it was free. It hasn't left my garage since I brought it home.

Nice rig! Seems reasonable enough to transport.

 

[Frome]

Neighbor just texted me today and said "sounds like you're on vacation with your new amp". Said he heard me at 11:15 at night when he was in bed! What he actually heard was my neighbor on the other side whose daughter just turned 21 and was having a party, wasn't me… this time!

 

[bobyoung53]

Sounds great, fan noise is annoying. It's in better shape than I expected. Everything rattles in my studio area when I play it. May need to relocate to the basement.

The noise is from the fan blades being mounted too close to the metal grill. The early ones had a plastic cover over the fan and you couldn't even hear them, another weird thing is they had a plastic insert that screwed out right in the middle of the fan with which you oiled it, I used 3 in 1 oil. Rotron fans.

You can put some rubber washers in between the fan and the grille and it will quiet way down.

 

[Wasnex]

The noise is from the fan blades being mounted too close to the metal grill. The early ones had a plastic cover over the fan and you couldn't even hear them, another weird thing is they had a plastic insert that screwed out right in the middle of the fan with which you oiled it, I used 3 in 1 oil. Rotron fans.

You can put some rubber washers in between the fan and the grille and it will quiet way down.

Here is my experience.

My 69 has a hole cut through the grill for the fan. I sucks air in. There is no guard over the fan, so it will bite your finger if you're not careful.

My 87 does not have a cut out for the fan. It blows air out through the holes in the grill.

The noise is about the same for both...obnoxiously loud.

I thought it would be a good idea to turn the fan around on the 87. But turns out it's way noisier when it sucks the air in through the little holes in the grill. AFAIK, as the air passes through the holes, it forms into little high speed jets, which strike the fan blades and significantly increase the noise level.

I turned the fan back around.

 

[Frome]

The noise is from the fan blades being mounted too close to the metal grill. The early ones had a plastic cover over the fan and you couldn't even hear them, another weird thing is they had a plastic insert that screwed out right in the middle of the fan with which you oiled it, I used 3 in 1 oil. Rotron fans.

You can put some rubber washers in between the fan and the grille and it will quiet way down.

Appreciate the tips. Wonder why they got away from the plastic cover used on the early ones if it made them run so quiet. I suspect it restricted air flow which would make the motor work harder and probably shorten its lifespan.
I'm taking a couple of other amps in for service today, thinking I'll have them go over it and see if it's worth replacing and to just give it a good once over. I'm hooked on the way it sounds and want to do everything I can to make sure it lasts for years to come. Problem is I'm enjoying it too much to drop it off and have it sit with them for a week or so.

 

[bobyoung53]

Appreciate the tips. Wonder why they got away from the plastic cover used on the early ones if it made them run so quiet. I suspect it restricted air flow which would make the motor work harder and probably shorten its lifespan.
I'm taking a couple of other amps in for service today, thinking I'll have them go over it and see if it's worth replacing and to just give it a good once over. I'm hooked on the way it sounds and want to do everything I can to make sure it lasts for years to come. Problem is I'm enjoying it too much to drop it off and have it sit with them for a week or so.

No, they broke easily, just put 4 nuts between the screen and the fan it will push away enough to quiet right down.

 

[Frome]

No, they broke easily, just put 4 nuts between the screen and the fan it will push away enough to quiet right down.

I'll give that a try, thanks! It's with my tech currently, waiting to see what he recommends also.

 

[Frome]

Found a refinished 8x10 for a great price locally. Looks like he did a really nice job on it. He says it's a 1970 but it looks like based on the speakers, it's a 72. Am I reading the code correctly?

 

[coreyfyfe]

Found a refinished 8x10 for a great price locally. Looks like he did a really nice job on it. He says it's a 1970 but it looks like based on the speakers, it's a 72. Am I reading the code correctly?

View attachment 7239880

Yes, and the part numbers match up with the speaker codes I had in my flatback.